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Do you understand the key points of alloy die casting process?
2024 / 05 / 11
In fact, vacuum casting of aluminum alloy is a method for forging metal parts. Due to the high performance, precision, and toughness of metal parts processed by aluminum alloy die casting, aluminum alloy die casting is often used in high demand industrial and equipment parts such as large aircraft and ships. Die cast metals have not only been aluminum alloys in history, but also magnesium aluminum alloy die casting, tin alloy die casting, copper alloy die casting, etc. They were once the choice of die cast metals, but were eventually replaced by aluminum alloys. Aluminum is a soft metal with good ductility, and can be produced in a ductile shape and size according to requirements during reproduction. Castings can also be made with smooth surface textures. From the perspective of usage effectiveness, aluminum alloy has excellent corrosion resistance and can maintain the thinnest wall thickness even at high temperatures in the early stages of the casting process. Other materials cannot meet these requirements. Aluminum alloy replaces other materials in production and becomes a specialized material in the die casting industry. Precision die casting of aluminum alloy is not only limited to aluminum alloy, but also requires the addition of silicon elements and electrolytic grinding during the initial die casting process. The strength and surface hardness of aluminum alloy vacuum die casting castings are high, and the dimensional accuracy of the casting is also high, which will increase the service life. Key points of pressure casting: On the other hand, it is necessary to ensure that
2024 / 05 / 09
Nowadays, the production and application of die casting industry are extremely common. At present, the most commonly used processing technology in automotive aluminum alloy forming and processing is aluminum alloy die casting, which accounts for 49% of various automotive forming and processing methods. Nowadays, the types of die casting products in China are diverse, including automobiles, motorcycles, communications, household appliances, hardware products, pneumatic tools, IT, lighting fixtures, escalators, small toy lights, etc. With the improvement of technical strength and product research and development capabilities, the variety and main uses of die casting products continue to expand, and their die casting machinery equipment, die casting molds, and die casting processing technology have undergone significant changes. Since 1914, aluminum alloy die casting technology has entered the stage of commercial production. With the development trend of the automotive industry and the invention and creation of cold chamber die casting machines, aluminum alloy die casting technology has experienced rapid development. In future scientific research and development of die casting technology, the advancement of aluminum alloy die casting will still be a key direction for the development trend of die casting technology. In order to better integrate into the market demand, the following challenges should be further addressed in the future: 1. Promote the application of new high toughness and high wear resistance die casting alloys, and scientifically research new die casting alloys that can be colored and used for castings with unique safety factor regulations;
How to choose the temperature for aluminum alloy die casting?
2024 / 05 / 07
During the processing of aluminum alloy castings, the processing temperature must be strictly controlled according to the aluminum alloy die casting process flow. When processing aluminum alloy castings, The die casting aluminum alloy machine should ensure that the temperature is as accurately as possible equal to or slightly higher than its liquidus temperature. If the liquidus temperature is higher than the solidification temperature range of the alloy body, the temperature can be reduced by adding high melting point metals that do not have harmful effects on the alloy, so as to choose an appropriate die casting temperature between the liquidus and solidus temperatures. If a cold chamber die casting machine is used to process castings, a semi solid die casting method with extremely high pressure and significantly lower temperature than the alloy liquidus can be used. The solid alloy can also liquefy the aluminum alloy casting through the "spray effect" of the internal gate, resulting in a more complete casting. In the production process of aluminum profile casting, hot chamber die casting or cold chamber die casting can be selected. Among them, hot chamber die casting is to keep the aluminum die casting in a die casting state that is equal to the temperature of the metal in the holding furnace, and at this time, the overheating is relatively small. When die casting at low temperature and room temperature, it is necessary to keep the alloy in a significantly overheated state in order to make thinner castings without producing cold shuts and other defects. Firstly, the burning loss of chemical elements in die cast alloys increases with the increase of superheat temperature; Then, the overheating temperature will intensify the shrinkage an
The characteristics of aluminum alloy die casting processing
2024 / 04 / 30
The low pressure casting process of aluminum alloy is made by adding some aluminum alloy elements to pure aluminum, such as aluminum manganese aluminum alloy, aluminum alloy copper, aluminum copper magnesium hard aluminum alloy, aluminum zinc magnesium copper superhard aluminum alloy, etc. Aluminum alloy has stronger physical, chemical, and physical properties than pure aluminum: easy to produce and process, high durability, wide range of usability, excellent decorative design effect, and exquisite pattern design. Aluminum alloys are divided into types such as rust proof treated aluminum, hard aluminum, and superhard aluminum. Each category has its own usage boundaries and codes for consumers to choose from. Aluminum alloy still maintains its lightweight characteristics, but the mechanical equipment function is significantly improved. The main uses of aluminum alloy raw materials include the following three aspects: first, as load bearing prefabricated components; Another type is used as raw materials for doors, windows, pipes, covers, shells, etc; The third is to use insulation materials for decorative design. After anodizing treatment, aluminum alloy can be colored and made into various decorative materials. Aluminum alloy furniture panels and aluminum profiles can undergo secondary production and processing such as anti corrosion, embossing, spraying, packaging printing, etc. to produce various decorative panels and aluminum profiles as building decoration materials. The production and processing raw materials selected for zinc alloy die casting can directly harm the results of the finished product. Therefore, all the zinc alloy die casting raw materials selected by Mingzhu have undergone multiple selections. Today, I will discuss the advantages of zinc alloy die casting raw materials with everyone;
How to deal with pitting on aluminum alloy die casting?
2024 / 04 / 28
Low pressure casting can provide a lot of useful information for flow field analysis of casting molds. The casting case requires injection pressure and locking pressure. You should know that this part is complete. Model flow analysis ensures the diversity of filling problems. For example, shortwave, foam, imbalanced filling, etc. Mold flow analysis can change process conditions such as gate position and injection speed. In deformation analysis, it is sometimes necessary to predict deformation trends. Deformation analysis can be used to compare changes in gate position, wall thickness, and design. Check the prototype through flow analysis and solve key issues. The efficiency of the circulating water cooling channel can be determined through analysis. The use of cooling deformation analysis method has improved accuracy. Due to the difficulty in replacing cooling water in the mold. This analysis is very useful before mold opening. The welding position can be predicted through mold flow analysis. At the same time, it helps to prevent straight lines from appearing easily. Mold flow analysis can also provide clues that affect welding quality. For example, pre melting point and welding pressure. How to handle the pitting of stamped castings? Due to the low temperature of the mold or alloy liquid, small pitting corrosion may appear on the surface of the casting under approximate negative pressure, resulting in die casting defects. Analysis of the causes of pitting corrosion in castings During filling,
2024 / 04 / 25
Sometimes, mold growth occurs on the surface of aluminum die casting. How can we resolve this situation? It is highly likely that scenario one: If a similar phenomenon occurs, there are two possible reasons:? 1. The results of air oxidation of cutting fluid;? 2. The residual water caused by the product starting to cool after removal. It is highly possible that situation two: mainly due to inadequate waterproofing, yellowing phenomenon: air oxidation of cutting fluid and concentration of release agent during aluminum die casting. It is very likely that scenario three: the problem of slag removal agent when solving aluminum alloy profiles in aqueous solution, the slag removal agent lacks the composition of fluoride salts, and check the secret recipe of the slag removal agent. The most common solution is to add 0.2-0.5 sodium fluoroaluminate throughout the slag discharge process of aluminum alloy profiles in aqueous solution, which can avoid the phenomenon of color fading and mold growth after casting production and processing. It is very likely that situation four: What is the problem with the spray painted architectural paint! Over time, the surface of the product may develop mold due to air oxidation. It is highly possible that situation five: Aluminum alloy profiles are bimetallic, and when they come into contact with acidic or weak alkaline components, they will become different colors. If the cutting fluid is selected incorrectly during the entire process of mechanical processing and manufac
Reasons for deformation in aluminum alloy die casting processing
2024 / 04 / 24
Reason for deformation of machine tool casting: to prevent sudden changes in thickness. Machine tool casting with small and uniform thickness should also be cooled, while machine tool casting with large and uneven thickness should be cooled in order from thin to thick, and the placement of the sprue should be reasonable. The slag hole is an irregular hole in the internal structure or external shape, and the casting of casting cannot be lowered during casting. Under the direct relationship of the workbench heat source, the parts of the CNC lathe and the bed casting will form different levels of deformation, causing the relative motion between the product workpiece and the CNC cutting tool to eventually break. Aluminum alloy die castings with sand cores are the next quarter of the CNC lathe. For dry CNC lathes, due to all production and manufacturing being adjusted by financial accounting instructions, the damage caused by thermal expansion is relatively serious. Before painting the CNC lathe, it is necessary to conduct a casting sound inspection on the plate bed, check the uneven appearance of the surface, and use object cutting to repair it. The dirt on the outside should be clean and tidy. Concrete pouring is continuous. The surface of machine tool casting should have weld nodules, and intelligent robot aluminum alloy die casting should completely or partially cover a layer of mixed chemical substances of metal composite materials (or nickel hydroxide) and sand (or industrial coatings) or a layer of calcined sand. Causing uneven and uneven surface of machine tool casting in China. Reduce the gaps in fine sand. Properly reduce the ambient temperature of the metal in situ concrete. The flame retardant grade of gradient sand and core sand. After the processing of precision casting, metal cleaning agents or industrial gasoline are used to remove or clean, ensuring the appearance of oil and other dirt. Co
What are the key points in choosing aluminum alloy die casting packaging boxes?
2024 / 04 / 17
Aluminum alloy die casting products are mainly used in electronics, automobiles, motors, household appliances, and some communication professions. High performance, high precision, and high toughness high quality aluminum alloy products are also used in professions with high requirements such as large aircraft and ships. The primary use is still in some parts of instruments aluminum alloy die casting factories The effects and influences of various elements in aluminum alloy die castings: Silicon: The primary element in aluminum alloys, which can improve the casting performance of the alloy. Silicon and aluminum can form a solid melt. Magnesium: can improve strength and yield limit, machinability, and corrosion resistance. Zinc: Zinc can improve fluidity, increase thermal brittleness, and decrease corrosion resistance. Iron: When the iron content is below 6% at work, it can reduce the adhesion of the mold. Manganese: Manganese can reduce the harmful effects of iron in aluminum alloys, transforming iron into needle like arrangements into fine crystalline arrangements, with a moderate 5% concentration. Nickel: can improve strength and hardness, reduce corrosion resistance, and has the same effect as iron. Titanium: can refine grain arrangement, improve mechanical properties, and reduce alloy hot cracking tendency. Regarding the packaging of aluminum die casting products, it is important to protect the products inside, but now the exquisite appear
What are the advantages of aluminum alloy die casting infiltration process
2024 / 04 / 12
The application of die casting aluminum alloys is becoming increasingly common, but aluminum die casting technology, as a new casting process, is also widely used today. Aluminum alloy die casting manufacturers can briefly introduce the advantages of aluminum die casting infiltration process? Firstly, cost savings 1. A type of aluminum alloy used for casting can be used for lifelong infiltration without significant loss, reducing or eliminating the cost of molds. Aluminum alloy die casting process 2. Aluminum impregnated injection molded parts eliminate the traditional method of producing cores, saving manpower and reducing manufacturing costs. 3. The aluminum die casting industry has a large number of male workers who have gradually developed into a large number of female workers, resulting in a significant reduction in labor costs in all aspects. 4. Aluminum die casting sand impregnation can be recovered with a loss of 2% -5%. Secondly, improving efficiency and productivity 1. Mechanical foaming impregnated aluminum die casting model foam. At the same time, the quality of the model is guaranteed, and the production speed is also quite fast.
Can aluminum alloy die casting achieve low-cost production
2024 / 04 / 10
Aluminum alloy die casting is a common and important method to reduce the weight of large carriers such as automobiles, aviation, and ships. It not only makes the product lighter in weight, but also enhances its strength and durability. For manufacturers, aluminum alloy die casting is also a low cost production method because compared to other materials, aluminum alloy processing has lower costs and higher efficiency. But can we guarantee high quality? The following is a reflection and answer to this question. Aluminum alloy die casting is generally applied to products that are lightweight but have high strength and complex appearance, such as automotive engine covers, aviation engine parts, electronic product casings, etc. Aluminum alloy die casting, die casting molds, die casting die factories can manufacture lighter, stronger, and more corrosion resistant aluminum alloy parts because aluminum is a low density, high strength metal. Compared with other traditional metal processing techniques, aluminum alloy die casting can be faster, more convenient, and more stable in producing complex components. Meanwhile, the production cost of aluminum alloy die casting is also lower than other methods. The cost of aluminum alloy die casting tools is generally relatively high. As the quality of die casting tools affects the yield of products, once the equipment is adjusted and production begins, the yield will tend to stabilize and the cost will also decrease.
What should be noted before electroplating zinc alloy die castings?
2024 / 04 / 08
The reasonable pre treatment of zinc alloy die casting parts before electroplating is the key to the success or failure of electroplating. However, in its pre treatment process, it is often equated with the pre treatment of other metal materials, or one of the processes is ignored, resulting in a large number of plated parts being reworked or scrapped. Due to the particularity of zinc alloy die castings, it is difficult to rework, which is the reason for the high scrap rate of zinc alloy die castings during the electroplating process. 1. Precautions for pre plating treatment of zinc alloy die casting parts 1. Understand the structural characteristics of zinc alloy die castings: The surface of zinc alloy die castings is very similar to the surface of steamed buns, with a smooth and dense metal layer of 0.02-0.10mln thickness, and below it is a loose and porous structure. Therefore, during mechanical polishing, it is important to avoid piercing through its smooth and dense layer, and to avoid exposing loose and porous internal materials, which may cause adverse phenomena such as blistering and peeling of the coating. 2. Master the chemical properties of zinc alloy die casting parts: During the die casting process, the influence of process factors can cause the production of zinc and aluminum rich parts in the same zinc alloy die casting part. Strong alkali preferentially dissolves the aluminum rich phase, while strong acid preferentially dissolves the zinc rich phase. If strong alkali or acid is used during oil removal or etching, it can cause blistering and peeling of the coating during electroplating, seriously affecting the yield of the product. Therefore, zi
Specification for use of pressure castings
2024 / 04 / 03
6.1 Preheating and thermal balance of die casting molds. The magnitude of stress inside the die casting mold is directly proportional to the temperature gradient inside the die casting mold, and it is necessary to appropriately increase the preheating temperature. However, excessive preheating temperature can lead to a decrease in the yield strength of the surface material of the die casting mold, thereby affecting the thermal fatigue performance of the mold. In addition, maintaining thermal equilibrium during the production process of die casting molds is of great significance for improving production efficiency and ensuring the sealing of castings. The chiller must be used continuously and the cooling water must not be suddenly turned on or off during the production process. The rhythm and coherence of work create conditions for maintaining the thermal balance of die casting die. 6.2 Use die casting mold paint. The use of coatings plays an important role in the protection of die casting mold materials. Areas where the coating is not evenly covered are usually areas with severe erosion. Spraying the coating into the high temperature mold cavity results in excessive vapor pressure, causing demolding and splashing, preventing the paint film from being fully adsorbed onto the mold surface. The plan is to increase the spraying pressure, so that the droplets can obtain higher kinetic energy, overcome the phenomenon of droplet condensation, and achieve the goal of uniform coating. 6.3 Maintenance and repair of aluminum die casting.
For die casting enterprises, electroplating post treatment is very important
2024 / 03 / 29
For precision die casting enterprises, electroplating post treatment is very important. In the electroplating production process, the pre treatment and post treatment of castings are very important. Many die casting enterprises discover defects during all inspections, most of which are caused by surface treatment defects. Previously, everyone was still cautious and cautious in handling it, because in the public understanding of the aluminum die casting industry, pre treatment was not achieved, and electroplating would definitely be damaged in large quantities, But there are very few companies that value die casting die in post processing. After electroplating, the casting is treated mainly to retain the coating and increase its corrosion resistance. The treatment methods adopted include hydrogen removal, passivation, and if necessary, organic thin film coating. Dehydrogenation treatment The removal of hydrogen gas is particularly important for electroplated products, as in the electroplating system, metal ions obtain electrons through the cathode. Similarly, hydrogen ions can also obtain electrons, generate atomic hydrogen, penetrate into the metal coating, and after being left for a period of time, form looseness. Hydrogen will combine in the atomic state to form hydrogen, causing its volume to expand, resulting in adverse phenomena such as pinholes, bubbles, and even detachment of the coating. If it infiltrates the matrix, it can also cause hydrogen embrittlement in the overall component, especially in high strength steel. Once hydrogen permeation occurs, it is easy to cause brittle fracture of the component. Therefore, after electroplating, heat treatment s
What materials are aluminum alloy die castings made of?
2024 / 03 / 27
Aluminum alloy die casting is an alloy based on aluminum and added with other elements. Commonly added alloying elements include aluminum, copper, magnesium, cadmium, lead, titanium and other low temperature aluminum alloys. Aluminum alloy has a low melting point, good fluidity, easy welding, brazing and plastic processing, and is corrosion resistant in the atmosphere. The scrap materials are easy to recover and remelt; however, the creep strength is low and it is easy to produce natural aging and cause dimensional changes. Prepared by melting method, die cast or pressure processed into materials. What materials does aluminum alloy die casting consist of? Aluminum alloy die casting plants can be divided into cast aluminum alloys and deformed aluminum alloys according to the manufacturing process. The main added elements of aluminum alloys are aluminum, copper and magnesium. Aluminum alloys can be divided into two categories: deformation and cast aluminum alloys according to processing technology. Cast aluminum alloy has good fluidity and corrosion resistance, and is suitable for die casting die surfaces, automobile parts shells and other die casting molds. 1. Poor corrosion resistance. When the impurity elements lead, cadmium, and tin in the alloy composition exceed the standard, the casting will age and deform, which will be manifested as volume expansion, mechanical properties, especially plasticity, will decrease significantly, and even break after a long time. The solubility of lead, tin, and cadmium in aluminum alloys is very small, so they are concentrated at the grain boun
Surface treatment of aluminum alloy die casting
2024 / 03 / 26
Aluminum alloy diecast phosphating By using SEM and XRD, methods such as accelerator, fluoride, potential time curve, film weight change, Mn2+, Ni2+, Zn2+, PO4 and Fe2+ and their influence on the aluminum phosphating process were studied in detail. Studies have shown that guanidine nitrate has the characteristics of good water solubility, low dosage, and fast film formation, and is an effective accelerator for aluminum phosphating. Fluoride can promote film formation, increase film weight, and refine grains; Mn2+ and Ni2+ can significantly refine grains, make the phosphating film uniform and dense, and improve the appearance of the phosphating film; when the Zn2+ concentration is low, it cannot Film formation or poor film formation is because Zn2+ increases the concentration and increases the weight of the film; the PO4 content has a greater impact on the phosphating film, increasing PO4 increases the content of the phosphating film. Alkaline electrolytic polishing process Through research on the alkaline polishing solution system, the effects of corrosion inhibitors and viscosity agents on the polishing effect were compared, and an alkaline solution system with good polishing effect was successfully obtained, which reduced the working temperature, extended the service life of the solution, and improved the polishing effect. of additives. Experimental results show that adding appropriate additives to the NaOH solution can produce good polishing effects. The exploratory experiment also found that under certain conditions, the surface reflectivity of aluminum can reach 90% after DC constant voltage electrolytic polishing with glucose NaOH. However, because th
To improve the life of the mold, we should start with the heat treatment process
2024 / 03 / 23
To improve the life of the mold, we should start with the heat treatment process. 1. Clean the mold surface. Sandblasted. Just grind with a coarse oil stone, or polish with an abrasive belt, and then heat treat. After returning, grind with fine oil stone. First use a fiber wheel to polish, which can effectively remove the black skin, and then grind and polish. You can also try it once with 800-grit boron carbide sandblasting. It should be able to remove the black skin without requiring a lot of re-sanding. 2. The difference between processed and unprocessed. Judge by the slapping sound. The metallographic structures of cast and quenched + tempered workpieces are different, and the internal losses are also different. They can be distinguished by tapping lightly. 3. Prevent soft spots. Rust should be removed before the aluminum alloy die casting is removed from the mold. During quenching and heating, attention should be paid to protecting the mold surface. Try to use a vacuum electric furnace, a salt bath furnace and a protective atmosphere furnace for heating.
Making good molds can bring good benefits to die casting companies
2024 / 03 / 21
Making good molds can bring good benefits to die casting companies. Since the performance of the mold determines the efficiency of the die casting company, the die casting company attaches great importance to the processing of the mold to avoid unnecessary defects and a decrease in mold performance. The mold processing method is also very important, which is related to major interests. 1. When selecting and dressing the grinding wheel, choose a grinding wheel made of white corundum. Its performance is hard and brittle, and it is easy to produce new cutting edges. Therefore, the cutting force is small and the grinding heat is small. It is suitable for moderate particle sizes, such as 46 ~60 mesh, the grinding wheel hardness should be medium soft and soft (ZR1.ZR2, R1.R2), that is, coarse grained, low hardness grinding wheels. Good self motivation can reduce cutting heat. It is very important to choose the appropriate grinding wheel when fine grinding. For the high vanadium and high molybdenum state of mold steel, it is more appropriate to choose a GD single crystal grinding wheel. When processing cemented carbide and materials with high quenching hardness, diamond grinding wheels with organic binders are preferred. Organic binder has good self grinding performance. In recent years, with the application of new materials, the grinding surface roughness can reach 0.2μm. The CBN (cubic boron nitride) grinding wheel has very good processing effect. It is used in CNC molding machines. Coordinates Grinder. For finishing on CNC internal and external cylindrical grinders, the effect is better than other types of grinding wheels. During the grinding process, attention should be paid to dressing the grinding wheel in time to keep the grinding wheel sharp. After the grinding wheel is passivated, friction and extrusion will occur on
Methods for die casting manufacturers to reduce sandblasting and peeling of die casting products
2024 / 03 / 19
Methods for die casting manufacturers to reduce sandblasting and peeling of die casting products With the development of society, zinc alloy die casting products have also been widely used. It is believed that many zinc alloy die casting factories often encounter the phenomenon of sandblasting and spalling. Based on the experience of factory connector die casting parts that require sandblasting and die casting, measures to solve the sandblasting problem of zinc alloy die casting products are summarized. 1. Inspections should be strengthened before die casting to reduce parts with serious defects such as water marks, pores, pinholes, etc. on the product surface to ensure the compactness of the die casting parts. 2. Each batch of molds required to complete an order requires mold cleaning and maintenance. 3. If the die casting product has cold lines, use soft nylon to sweep the surface to reduce peeling. 4. The choice of sandblasting sand type is very important. If the embryo material is not too hard, choosing brown corundum can reduce peeling. 5. The final solution is still closely related to our die casting technology. This also tells us that only if zinc alloy die casting factories continue to learn and accumulate knowledge of various die casting technologies in daily life, constantly discover problems, and find solutions in the process of casting zinc alloy die casting products, can the zinc alloy die castin
How much do you know about the role of various metal elements in aluminum alloy castings?
2024 / 03 / 14
Aluminum alloy castings are generally composed of many metal elements, but the composition of metal elements of various aluminum alloy grades is also different. The main material of our aluminum radiator is aluminum material specially used for international aviation, and the grade is ADC12. Today, the editor will start with a special A brief explanation of the main components of aluminum alloy die casting ADC12: 1. Silicon (Si) Silicon based alloys contain silicon as the main component, which can improve the performance of castings, with an average content of 9.6%-12%. Silicon approach: 1. Improve the high temperature fluidity of alloy. 2. Reduce shrinkage. 3. Reduce cracking tendency. 4. Increase wear resistance. However, when the silicon content exceeds 12%, silicon and aluminum form a hypereutectic, and there are many impurities such as copper and iron, which means free silicon hard spots appear, making cutting difficult. High silicon aluminum alloys have serious corrosion effects on die casting die crucibles. 2. Copper (Cu) The copper content in the alloy is generally 1.5%~3.5%. Increasing the copper content can improve the fluidity, tensile strength and hardness of the alloy, but the corrosion resistance decreases and the tendency of hot cracking increases.
Best practices for the design and manufacturing of aluminum alloy die casting molds
2024 / 03 / 11
The best practices for designing and manufacturing aluminum alloy die casting molds involve multiple key steps and elements. Below, let me take you to understand the suggestions and key points: Deeply understand the characteristics of aluminum alloys: At the beginning of design, it is necessary to fully understand the fluidity, solidification characteristics, and thermal conductivity of aluminum alloys. These characteristics will directly affect the design, structure, and parameters of the mold. Considering the shrinkage rate of aluminum alloy, sufficient shrinkage space should be reserved in the design to avoid deformation or cracking of the casting. Precision mold design: Mold design should accurately reflect the shape and size of the required die casting die, including all details and features. Optimize the mold structure to ensure that aluminum alloy can uniformly and quickly fill the mold, reducing defects such as bubbles and cold shuts. Design reasonable parting surfaces and demolding angles to facilitate smooth demolding of castings. Select high quality mold materials: Choose mold materials with high hardness, strength, and good thermal stability to ensure the durability and accuracy of the mold. Consider the wear resistance and corrosion resistance of the material to extend the service life of the mold. Fine machining and assembly:
How to avoid quality issues in production of aluminum alloy die-casting?
2024 / 03 / 08
Aluminum alloy die casting may encounter various quality problems during the production process. Today, let me take you to take a look Optimize raw material selection and processing: Strictly screen raw materials to ensure that their chemical composition and physical properties meet production requirements. Necessary pre treatment of raw materials, such as impurity removal and degassing, is carried out to improve their die casting performance. Improving Die Casting Mold Design: Design a reasonable mold structure to ensure that the molten metal can smoothly fill the mold cavity and avoid defects such as shrinkage and porosity. Optimize the exhaust system of the mold to ensure smooth gas discharge and reduce the generation of pores. Consider using a cooling system to control mold temperature and improve the solidification process of castings. Optimize die casting process parameters: Select the appropriate die casting temperature, pressure, and speed based on the type of aluminum alloy and the requirements of the casting. Strictly control temperature changes during the die casting process to avoid quality issues caused by excessively high or low temperatures. Adjust the filling speed to prevent issues such as curling or insufficient filling caused by being too fast or too slow. Strengthen process monitoring and quality control: Regularly maintain and inspect die casting equipment to ensure it is in good working condition. Real time monitoring of key parameters during the production process, such as temperature, pressure, etc., to ensure they remain within the set range. Strictly inspect the quality of die casting parts, including appearance, size, performance, etc., and promptly identify and handle non conforming products. Improving employee skills and training: Strengthen the learning and training of employees on Aluminum Die Casting technology
Best practices for the design and manufacturing of aluminum alloy die casting molds
2024 / 03 / 07
1. Design phase Material selection: Choosing the appropriate mold material is crucial for ensuring the durability of the mold and the quality of the die casting. The mold material should have excellent thermal stability, wear resistance, and corrosion resistance. Structural design: Design a reasonable mold structure, including parting surfaces, gates, exhaust ports, etc., to optimize the filling and solidification process, reduce defects, and improve production efficiency. Cooling system design: Design an efficient cooling system to quickly reduce mold temperature, shorten production cycle, and ensure stable quality of Die Casting Die. 2. Manufacturing phase Machining accuracy: Ensure the machining accuracy of the mold, including the fit clearance and surface roughness of each component, to ensure the clamping accuracy of the mold and the dimensional stability of the Aluminum Die Casting. Heat treatment: Apply appropriate heat treatment to the mold to improve its hardness and wear resistance, and extend its service life. Assembly and debugging: After the completion of mold manufacturing, assembly and debugging are carried out to check the coordination and smooth movement of each component, ensuring that the mold can operate normally. 3. Best practices Simulation and analysis: During the design phase, simulation software is used to simulate and analyze the die-casting process, predict potential defects, and optimize the design scheme. Standardized design: Adopting standardized design methods and components to improve design efficiency and manufacturing quality, while reducing maintenance costs. Continuous improvement: During the use of molds, regularly collect and analyze production data, identify potential problems, and make improvements to improve the performance and stability of the molds. In addition, the followi
The main reasons for flash formation in die casting parts
2024 / 03 / 01
The main reason for the occurrence of burrs in die casting parts is that the die casting machine is not properly adjusted or the operation is not standardized. Before injection, the machine locking force adjusted by the worker may not be accurate. Excessive injection speed may also lead to excessively high pressure shock peaks, resulting in flash edges. Damage to molds and sliders, or failure of locking components. Wear of mold inserts and sliders, or deformation caused by insufficient mold strength, can cause metal to overflow on the parting surface and form burrs. There are debris on the parting surface that have not been cleaned thoroughly. These impurities may hinder the flow of metal during the die casting process, causing the metal to overflow in unwanted areas and form burrs. The projection area calculation is incorrect, exceeding the locking force. If there is an error in the calculation of the projected area, it may lead to insufficient locking force, which cannot fully fix the metal, causing it to overflow during the Aluminum Die Casting process and form burrs. In order to prevent flash formation in Die Casting Die, it is necessary to check the clamping force and pressurization status of the machine before production, adjust the injection addition structure appropriately, and ensure that the peak value of injection pressurization decreases. At the same time, it is necessary to inspect the mold and slide block, promptly repair the damaged slide block, ensure that the locking element works, and correct the worn slide block. It is also necessary to correctly calculate the strength and locking force of the mold, clean up debris on the parting surface, and adjust the injection speed appropriately.
What conditions are required for die casting processing?
2023 / 06 / 27
Die casting is a common metal processing method with a wide range of applications, including automotive parts, electronic equipment, household appliances, etc. The advantage of die-casting processing technology lies in its ability to quickly manufacture high-precision and high-quality components, which is widely used in the manufacturing industry. So, what conditions are required for die-casting processing? This article will explain precision die-casting and die-casting molds from various aspects such as raw materials, equipment, and personnel. 1. Raw materials Successful die-casting processing cannot be achieved without suitable raw materials. Generally speaking, die-casting raw materials meet the following conditions: (1) The characteristic of being easy to melt. The majority of core die-casting raw materials belong to machine die-casting aluminum, silicon aluminum alloys, etc. These materials have a common characteristic of being easy to melt. (2) Good liquefaction performance. Aluminum alloy in liquid state is more fluid, therefore it can flow better at high temperatures. (3) Stable physical and chemical properties. The raw materials must have sufficient stability and certain strength, and cannot be too fragile, otherwise it will lead to insufficient strength of the casting. 2. Equipment The equipment required for die-casting processing is
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