A serious and frequent defect (blistering) of Zinc Alloy Die Cast Part has always plagued many die casting practitioners and die casting processing companies. Together, it has also caused skin peeling between large material suppliers and die-casting companies, polishing and electroplating companies, and small companies. Zinc alloy lead-zinc ore production process flow for processing zinc alloy die-casting system, casting and rolling. This kind of alloy has a low melting point and can be cast into a variety of precise and messy components. It has high mechanical strength, corrosion resistance, ductility, excellent forge ability and sensitive versatility. It is widely used to make high-quality components and products. Zinc alloy die-casting has good casting function can cast complicated shapes and thin-walled precision parts, and the appearance of the casting is smooth; does not attract iron during melting and die-casting does not corrode the mold, does not stick to the mold; has good room temperature mechanical functions and wear resistance Low melting the point, melting at 385 ℃, simple die-casting.

Zinc Alloy Die Cast Part

This problem needs to be resolved at this stage. The following is an explanation of the bubble phenomenon by Metal Acceeeories Manufacturer:

Zinc alloy die castings are now widely used in various decoration aspects, such as furniture accessories, construction and decoration, bathroom accessories, lighting parts, toys, tie clips, belt buckles, various metal decorative buckles, etc., so the quality requirements for the appearance of die castings are higher, Together demand outstanding appearance processing capabilities. The most common disadvantage of zinc alloy die castings is the appearance of blistering.

Characteristics of shortcomings: There are small bulges on the surface of the die-casting parts, which are found after die-casting, exposed after polishing or processing, or after injection or plating.

cause:

The hole caused by mainly stomata and shortening mechanism, stomata are often round and most shortening are irregular.

1. Reasons for stomata:

A. During the filling and coagulation of the molten metal, due to gas intrusion, holes appear on the outside or inside of the casting.

B. The gas evaporating from the paint penetrates.

C. the gas content of the alloy liquid is too high, it will be separated during condensation.

When the gas in the cavity, the gas evaporated from the coating material, and the gas condensed from the alloy is left in the mold when the tank is defective, the air holes formed in the casting will eventually remain.

2. Causes of shrinkage:

A. In the process of metal liquid coagulation, shrinkage occurs because of the volume is reduced or the final coagulation site cannot be refilled with metal liquid.

B. The castings with uneven thickness or part of the castings are overheated, forming a part that is too slow to condense, and when the volume is shortened, the appearance forms a concave position. Due to the presence of pores and shrinkage holes, water may enter the holes when the casting is being treated. When baking and spraying and plating are appropriate, the gas in the holes will expand due to heat or the water in the holes will change into steam and expand in volume, which causes blistering on the casting surface.

Our company also has Aluminum Die Casting on sale, welcome to consult.

Pressure casting (referred to as die-casting) is a method of making liquid or semi-liquid metal under high pressure to fill the mold at a very high speed and solidify under pressure to obtain a casting. Products with high dimensional accuracy and mechanical properties, high productivity, and low or no machining allowances are widely used in automotive, aviation, electronics, machinery, hardware and other fields. In recent years, China Die Casting parts Factory, with the rapid development of the automotive industry, the scope of application of die castings in the automotive industry has continued to expand. Zinc alloy die casting parts companies, the increasing demand for lightweight vehicles has provided a broad range for the development of the die casting industry. 

Zinc Alloy Die Cast Part

Causes and improvement measures of shrinkage in Zinc Alloy Die Cast Part
Shrinkage cavity:
Shrinkage refers to irregularly shaped holes at the thick section of the die casting, and the inner wall of the hole is rough. It can even cause a local honeycomb structure in the die casting, which affects the strength of the casting. Product processing face hole exposed. The outer surface of the die-cast zinc alloy product has a quite dense structure, and some small holes will appear inside the workpiece due to the shrinkage phenomenon. If the processing volume exceeds the thickness of the dense layer, the holes will increase significantly.
During the die-casting process, the zinc liquid starts to solidify after it is pressed into the cavity and filled with the cavity. Due to the low temperature of Die Casting Mould Components and water cooling, the zinc alloy is die-cast. The zinc liquid starts to solidify from the surface in contact with the mold. At the outermost layer, a hard shell is formed first, and the zinc alloy die-casting company gradually solidifies inward. Zinc solution gradually shrinks with decreasing temperature, but the outer surface of the casting has formed a sealed hard shell, so as the zinc solution gradually solidifies, some hollow spaces will be formed at the final solidified position, that is, shrinkage cavity. Excessive wall thickness results in a slow internal cooling and solidification rate. After the liquid metal fills the cavity, it cannot be replenished in the shrinking process, which is likely to occur on uneven thickness castings.
The method of eliminating shrinkage can be achieved by reducing the wall thickness of the area where the shrinkage is located, so that it can solidify quickly and uniformly, or by optimizing the structure of the casting and mold. Sometimes due to the function and structure of a certain area, the wall thickness cannot be reduced. You can consider increasing the depth of the prefabricated hole in the casting to change the processing area. From a process point of view, add cooling water channels to the molds in this area, strengthen the cooling, and accelerate the solidification speed of the zinc liquid to reduce the volume of shrinkage holes. It can increase pressure to increase the density of the tissue. 
It cannot be eliminated by 100%, it can only be reduced or transferred, and sometimes it is only a problem of shrinkage in processing.

Magnesium Alloy Die Cast Part is an alloy based on magnesium added to other elements. The utility model has the advantages of small density, high specific strength, large specific modulus of elasticity, good heat dissipation, good shock absorption, large impact load resistance than aluminum alloy, and good corrosion resistance to organic substances and alkalis. Magnesium has a specific gravity of about 2/3 of that of aluminum and 1/4 of iron. Therefore, it is widely used in electronic equipment, auto parts, and medical equipment such as mobile phones and communication equipment.

Magnesium Alloy Die Cast Part

Currently the most widely used is a magnesium-aluminum alloy, followed by magnesium-manganese alloy and magnesium-zinc-zirconium alloy. Commonly used grades are AZ91D, AM60B, AM50A, AS41B, etc.

Magnesium Alloy Die-Casting Mould not only requires exquisite workmanship and exquisite design but also requires the die-casting mold maintenance personnel to be responsible. The technical standards of the die-casting mold should be familiar with the following.

1. The sliding parts, such as the core of the core pulling mechanism and the guiding device, should be thoroughly cleaned and carefully inspected and maintained. Relubricate and assemble with high-temperature grease.

2. If there is hydraulic core pulling, the hydraulic components should be kept in sync with the mold. The maintenance of the hydraulic components of the die casting machine pays special attention to cleaning and pollution prevention, otherwise, it will pollute the entire hydraulic system of the die casting machine.

3. In the production process, when the mold is damaged, the repair plan should be determined according to the specific conditions. If necessary, complete the repair work as described above.

4. Complete the maintenance of the mold, carry out anti-rust treatment on the molding surface, the parting surface and the mounting surface, close and fix the mold, and install it on the machine and the backing plate according to the mold installation direction. The mold attachment is placed with the mold.

5. All of these are cleaning metal molds and scales and showing the true mold color.

6. Check the problems in the mold by referring to the final die-cast product repaired with the mold. Whether there is pulling, sticking, pressing, fleshing, bending or breaking of the small core, the insertion and positioning of the movable core are not accurate, the breaking length of the push rod or the push rod is changed, the positioning of the insert is not accurate, and the fastening bolt is loose. Repair or replace the damaged conditions.

7. For cavity collapse, cracks and blockage, causing slight casting damage, local weld repair can be performed. Welding repairs should be carried out in strict accordance with the welding repair process, otherwise, the life of the mold will be reduced. The smaller the formed part, the more serious the above-mentioned defects or mold damage.

8. The forming surface of magnesium alloy die-casting parts is large, which can be partially repaired due to serious collapse, cracks and shedding. Welding repairs should be carried out in strict accordance with the welding repair process, otherwise the life of the mold will be reduced. The smaller the formed part, the more serious the above-mentioned defects or mold damage.

Our company is Aluminum Alloy Die Cast Part Factory, please consult if necessary.

Die Cast Part is a kind of pressure casting part. It is a pressure-casting mechanical die-casting machine with a casting mold. The metal such as copper, zinc, aluminum or aluminum alloy heated to liquid is poured into the inlet of the die-casting machine. Die casting, casting copper, zinc, aluminum parts or aluminum alloy parts of the shape and size of the mold, such parts are often called die castings. Die-casting parts have different names in different places, such as die-cast parts, pressure castings, die-casting parts, die-casting aluminum, die-casting zinc parts, die-casting copper parts, zinc die-casting parts, Magnesium Die Casting Parts, aluminum die-casting parts, aluminum die-casting parts, aluminum Pressed alloy castings, aluminum alloy die-cast parts, etc.

Magnesium Die Casting Parts

Due to its abundant labor resources and huge market space, China has laid a solid foundation for the development of the die-casting industry, so that the production focus of die-casting parts is gradually biased towards the domestic market.

As one of the important metal forming technologies die casting has penetrated into various industrial fields, especially the demand for products such as electronic computers, telecommunications, digital film, and television, furniture industry, etc., as well as the substantial increase in the export the volume of various types of die-casting parts, making die-casting products The production scale and pattern have undergone structural changes and a die-casting industrial cluster has been formed in different regions. At 2018, the annual output of die-casting parts reached 3.95 million tons, mainly concentrated in the Yangtze River Delta and the Pearl River Delta region. The combined output of die-casting parts in the two regions has accounted for more then half of the national die-casting production.

Although the output of die-casting parts in China is increasing year by year, there is still a certain gap between the die-casting technology level and the international leading position in the die-casting parts industry. Most of them are medium and low-end products, and the research and development production capacity is insufficient. The supply of high-end precision parts is restricted. In the later period, we want to achieve higher quality development, but also to learn advanced foreign technology, in order to make China a true die-casting power.

As a Die Casting Mold Supplier, share the die casting mold. Die-casting mold is one of the main tools for producing die-casting parts. It has been called die-casting machine and die-casting material and is called die-casting. But the price of die-casting mold has always caused headaches for many people. The high can reach two or three thousand, but the low one is only For thousands of dollars, most of the molds are made for the custom production of die-casting parts. So which price is suitable for the production of custom die-casting parts?

Today’s social information is very developed, the price of die-casting molds is relatively reasonable, the cost of high-priced die-casting molds is also high, and the quality is better than that of low-priced die-casting molds, so it is not suitable to see only what quality die-casting molds can To meet your needs, if you want to make products with certain requirements on dimensional precision, appearance and so on, and the structure is more complicated, then you need to use a higher price die casting mold; if you want to do die casting is relatively simple There is no requirement for appearance and precision, so you can use a lower-priced die-casting mold.

1. The installation position of Die Casting Mould is in accordance with the design requirements. The distance between the center of the die expansion force and the center of the die casting machine should be minimized as much as possible so that the force of the die casting machine bar can be more uniform.

2. Frequently check whether the mold lifting eye bolts, screw holes and lifting equipment are intact to ensure the safety of personnel, equipment and molds when lifting.

3. Regularly check the force error of the die casting machine bar and adjust it if necessary.

4. Before installing the mold, thoroughly clean the machine mounting surface and the mold mounting surface. Check whether the length of the ejector rods is appropriate and whether all the ejector rods are of equal length.

5. The pressure plate and pressure plate bolts should have sufficient strength and accuracy to avoid loosening during use. The number of pressure plates should be enough, and it is best to compact on four sides, not less than two on each side.

6. large molds should have mold brackets to avoid the mold sinking and dislocation or falling during use.

7. Molds with larger cores or dies that need to be reset may also need to be moved and fixed separately.

8. The cooling water pipe and installation should be sealed.

9. Adjustment after mold installation. Adjust the mold clamping tightness and adjust the injection parameters: fast injection speed, injection pressure, boost pressure, slow injection stroke, fast injection stroke, punch follow-up distance, ejection stroke, ejection reset time, etc. After the adjustment, put soft objects such as cotton silk in the pressure chamber and do two simulation shots to check whether the adjustment is appropriate.

10. Adjust the mold clamping to a proper distance between moving and fixed mold, stop the machine running, and put it into the mold preheater.

11. Set the holding furnace at the specified temperature and configure the scoop with the specified capacity.

12. Before production, confirm the integrity of the mold, correctly connect the neutron mold and the neutron fuel pipe and control switch circuit, etc., make sure that the metal of the conductive part is not exposed and select the control program before operation.

13. For a mold with an inverted pull device, the inverted pull rod must be installed; the ejector pin must be returned after ejection, otherwise the mold cavity will be damaged.

Die Casting Mould

As a Die Cast Mold Manufacturers, share with you the tips for a long life of die casting molds.

1. High-quality molding materials

2. Reasonably design mold wall thickness and other mold sizes

3. Try to use inserts

4. Use the largest possible angle R when possible

5. The distance between the cooling water channel and the profile and corner must be large enough

6.Relieve stress and temper after rough machining

7. Correct heat treatment, quenching and cooling must be fast enough

8. Thoroughly remove the EDM metamorphic layer

9. the surface can not be highly polished

10. the mold surface should be oxidized

11. If nitriding is selected, the penetration layer cannot be too deep

12.Preheat the mold to the recommended temperature in the correct way

13. When starting 5 ~ 10 pieces of die casting, a slow hammer speed should be used.

14.Minimize the temperature of molten aluminum on the premise of obtaining qualified products

15. Do not use too high aluminum injection speed

16. Make sure that the mold is properly cooled. The temperature of the cooling water should be maintained at 40 ~ 50 ° C.

17. For temporary shutdown, the mold should be closed as much as possible and the amount of cooling water should be reduced to avoid the thermal shock of the mold when it is turned on again.

18. Turn off the coolant when the model surface is at the highest temperature

19.Not too much spray release agent

20, after a certain number of die-casting, stress relief and tempering

Our company also has Die Casting Mould Components for sale, welcome to consult.

As a Metal Acceeeories Manufacturer, share with you the key points of die casting mold design, die casting mold production is not a problem.

Die casting uses a cavity in a die-casting mold to apply high pressure to the molten metal. This process is similar to an injection molding process. Therefore, die-casting mold design is very important for the production of die-casting parts. If you want to manufacture high-life die-casting molds, you need to master the following design points of Die Casting Mould:

(1) It is necessary to adopt advanced and simple structure as much as possible to ensure stable and reliable operation and convenient daily maintenance and repair.

(2) Consider the modifiability of the gating system, and the necessary modifications can be made during the debugging process.

(3) Reasonable selection of various tolerances, scales and machining allowances to ensure reliable mold fitting and required die casting accuracy.

(4) Select the appropriate mold material and reliable heat treatment process to ensure the service life of the die-casting mold.

(5) It should have sufficient rigidity and strength to withstand the clamping pressure and the rising force, and no deformation will occur during the die casting production process.

(6) Use standardized die-casting mold parts as much as possible to improve economy and interchangeability.

Aluminum Alloy Die Cast Part

The rationality of die-casting mold design is very important for die-casting production. Therefore, if you want to make the quality of die-casting parts stable and the quality is better, you must have a set of high-quality die-casting molds, master the above design points and let high-quality products die-cast. No longer a problem, so you can extend the life of die-casting molds!

With the continuous improvement of people’s material life, more and more consumers are tending to “quality”, including all kinds of aluminum alloy die-casting parts that are well known, which is invisible to the Aluminum Alloy Die Cast Part industry. The development has brought new growth space.

Some time ago, in order to further create a market environment of honest management and harmonious consumption, China launched a publicity campaign with the theme of advocating honesty and trustworthiness and co-constructing consumption harmony, and publicized the products to the masses through the dissemination of propaganda materials and display of counterfeit and shoddy products. Quality Law » and other related content. It can be seen that the state has become more and more rigorous in terms of quality. A die-casting enterprise wants to win the future and must-have product quality as a support. Just like Huayin Enterprise, we will continue to die-cast high-quality zinc-aluminum alloy die-casting parts to better serve consumers, and use more valuable business ideas to influence enterprises to move forward in the right track!

It is reported that nowadays, due to the formation of highly educated social consumer groups, they prefer to buy brands and product quality. Quality has become a living symbol they are pursuing. The quality of aluminum alloy die castings has become a long-term focus for consumers.

 China has entered a period of rapid development, and people’s lives have undergone rapid changes. For zinc alloy die-casting plants, die-casting high-quality products have become a basic requirement for enterprise survival. In order to die-cast high-quality products, the die-casting process needs to be continuously improved to meet the ever-increasing demand for die-casting parts.

　　The key to a Die Casting Parts Supplier‘s desire to produce high-quality die-cast parts are to have a complete system-based die-casting process that requires the technicians of the die-casting plant to constantly understand the world’s advanced die-casting technology and throughout the production process. Strictly in accordance with the die-casting process, the quality and safety of each part of the die-casting part from mold design to product shipment can be guaranteed. At the same time, some quality problems of the product can be solved in time to improve production efficiency. Therefore, a qualified die-casting process must be continuously improved and innovated to meet the demand for die casting quality.

Zinc Alloy Die Cast Part

　　It can be seen that the production process plays a vital role in the quality of die-casting parts. The scientific and rational production process can improve the yield of die-casting parts and ensure the interests of customers. Therefore, a high-quality zinc alloy die-casting plant pays attention to every detail in the production process and implements it in place.

　　Then, let’s explain to you the three reasons why young people like zinc alloy die castings.

　　In recent years, China has made a lot of efforts in Zinc Alloy Die Cast Part. From this year’s market trend, more and more young people have become a group with large consumption of zinc alloy die-casting parts. Of particular importance, and the functionality of the product is one of the key factors for young people to consider. What kind of zinc alloy die castings does the young man like?

　　1. Have a sense of fashion

　　Today’s young people pursue fashion, and they are more innovative and unique in their style. Unconventionality has become its endorsement. In order to cater to the young and light consumer groups, Huayin Die Casting Co., Ltd. suggests that you can design a stylish zinc alloy die-casting part by absorbing new elements as a design inspiration.

　　2. Have a sense of creativity

　　For the young people’s preference for innovation, zinc alloy die-casting parts must be continuously innovated and developed in terms of use, which can add colorful and endless fun to consumers’ lives, and bring endless surprises and beauty to life. Do what young people like about your innovation.

　　3. Conceptual

　　If enterprises want to design attractive zinc alloy die-casting parts, they must adhere to their own principles and original intentions. For the design and production of products, they must all meet the needs of consumers and always insist on placing the immediate interests of consumers. The first place allows consumers to enjoy an innovative life experience.

　　Our company also has CNC Machining Profile Parts for sale. Welcome to come and consult.

　As a popular technology for aluminum alloy die-casting parts, sandblasting is widely used in various Aluminum Alloy Die Cast Parts, so you want to make a beautiful aluminum alloy die cast part, aluminum alloy shell processing – sandblasting process should pay attention to four points :

　　First, the surface of the aluminum alloy die cast part must be cleaned before sandblasting. The cleaning process is to remove surface oil and dirt with sulfuric acid. After pickling, neutralize with alkali;

　　Second, after pickling, dry or dry the aluminum alloy die cast part to check the surface, mainly check whether it is clean, whether there is a watermark, whether there is yellowing, etc.

　　Third, sandblasting is a process of roughening the surface of an aluminum alloy casing by the impact of a high-speed sand stream. The type of sand used is generally 80#–320#. The larger the value, the smaller the sand. The roughness of the surface of the aluminum alloy shell is determined by the type of sand and the pressure of the blasting pressure. Under the same pressure, the larger the sand value, the finer the surface; and the larger the sand type, the higher the pressure and the thicker the surface.

　　Fourth, sandblasting is divided into manual sandblasting and automatic sandblasting. The manual blasting efficiency is relatively slow, and sometimes the spraying is uneven; the automatic blasting efficiency is high, and the surface thickness is uniform.

　　Aluminum alloy die cast part industry is more widely used, more and more products are replaced by aluminum alloy. To make a beautifully-formed aluminum alloy shell die-casting part, it also needs a series of the external surface treatment, and the sandblasting process The processing of aluminum alloy casing is more common, and the effect after treatment is also deeply loved by consumers!

Aluminum Alloy Die Cast Parts

　　The industrial casting of the first heavy materials, after all, “the clever the woman is difficult to be without rice”, the performance of this material of aluminum alloy is the root cause of its fire, aluminum alloy has good casting performance, small specific gravity, easy cutting, good electrical and thermal conductivity, corrosion resistance It has good properties and good strength (the strength is close to low carbon steel after cold treatment), and the aluminum alloy does not contain heavy metal elements and is easy to recycle, so it is very environmentally friendly, which constitutes the more reason why the aluminum alloy shell can be fired.

　　Then there is the social demand. From the development trend of automobile lightweight, it can be seen that without affecting the use, reducing the weight is bound to be the direction of the future industry, and people attach more importance to environmental protection and sustainable development. The impact of the national policy, the aluminum alloy shell processing is not surprising.

　　Aluminum alloy die cast part is generally the appearance part, the requirements of the appearance parts are much higher than the structural parts, and should not be sloppy during processing. As an Aluminum Alloy Die Cast Part Factory, I want to tell you that a good aluminum alloy case is missing. The following five details are not available.

　　1. Consider the problem of demoulding.

　　2. Considering the problem of the wall thickness of the aluminum alloy casing, the thickness gap of the filling is too large.

　　3. In the structure, try to avoid the appearance of structures, resulting in complex mold structures, and have to use multiple core or spiral cores.

　　4. Some die-cast parts may have special requirements, such as fuel injection.

　　5. Design consideration of mold problems. If there are multiple locations of the core, try to put two aspects, do not put the lower core, such a long time, the core of the aluminum alloy shell processing will have problems. Our company Die Cast Mold is on sale, welcome to come and consult.

　China has entered a period of rapid development, and people’s lives have undergone rapid changes. For zinc alloy die-casting plants, die-casting high-quality products have become a basic requirement for enterprise survival. In order to die-cast high-quality products, the die-casting process needs to be continuously improved to meet the ever-increasing demand for die-casting parts.

　　Will you ask if you can’t do the surface treatment? Then as a China Die Casting Parts Factory, let us give you an answer today:

Zinc Alloy Die Cast Part

　　First of all, Zinc Alloy Die Cast Part is also possible without surface treatment, but this needs to be considered according to the performance, structure, and use of your product; just like the appearance parts, it is easily oxidized, blackened, or Corrosion affects the quality of the product; therefore, the zinc alloy die-casting parts generally used outside will be treated with the surface of the product. Of course, the surface treatment of the effect is also selected according to the requirements of your product. It is not necessary to choose to electroplate. You can use baking paint and dusting. Surface treatment processes such as electrophoresis and sandblasting.

　　Many customers who use zinc alloy die castings will ask how zinc alloys can be stored for longer. This article tells you how to store zinc alloy die castings. Due to the chemical nature of zinc alloys, they are easily oxidized in the air, so zinc alloy die-casting parts we do generally do some surface treatment to make them more durable. But some internal parts only need to be deburred, with no surface treatment.

　　The storage time of zinc alloy die-casting parts is also related to our die-casting details. For example, the control of alloy composition in the production process of zinc alloy die-casting parts, the control of alloy composition is related to the choice of our zinc alloy raw materials, so when we purchase materials To choose high-quality and high-purity zinc alloy, high-quality zinc alloy raw material is the guarantee for producing high-quality zinc alloy die-casting parts. First of all, we need to store our zinc alloy raw materials reasonably, so that it will not cause the decline of the quality of subsequent die castings. The temperature of the furnace should be controlled within the proper temperature of the zinc alloy raw material, which is to ensure the good fluidity of the alloy liquid to fill the cavity, so that the mechanical properties of the zinc alloy die casting are stable.

　　For the storage of zinc alloy die-casting products, Huayin Die Casting Co., Ltd. proposes the following storage methods:

　　1. When we buy the zinc alloy die-casting material, we need to put it in a dry and clean place. Before using it, we must first sample the zinc alloy (or periodically).

　　2. The die-cast zinc alloy die-casting parts should be packaged and sealed after surface treatment, and placed in a place that is not easy to be wet so that the zinc alloy die-casting parts are not easily oxidized by air.

　　3. The surface should be pickled well (the paint can be cleaned up), and the moisture-proof measures should be done well.

　　Our company provides Zinc Alloy Die-casting Custom.

　　What are the main factors affecting the quality of magnesium alloy die castings? The following is a detailed description of Die Cast Mold Manufacturers. It includes die casting, die casting, die casting, die casting alloys and die casting operations.

　　(1) Die casting mold

　　Precision. The die-casting mold is required to work at high temperatures. Therefore, when selecting the cooperative tolerance of the die-casting mold parts, it can meet the requirements of the device precision at room temperature and can ensure the stability and reliable operation of the structural dimensions of each part. At the working temperature, especially the part of the alloy liquid that contacts at high speed. Under high temperature and high-pressure conditions, the mold matching gap changes temporarily, which affects the quality of the die casting.

　　cooling system. Inferior cooling water will damage the equipment system and further affect the quality of the die casting. Therefore, in the case where the quality of the cooling water cannot meet the requirements, the water treatment equipment and the central filtration equipment must be added to the cooling water system.

　　Pouring the drainage system. The pouring overflow system plays an important role in controlling and regulating the direction of movement of liquid metal, overflow and exhaust conditions, pressure transfer, filling speed, mold temperature distribution, and filling time. It not only selects the conditions for the movement of molten metal but also affects the quality of die casting. In order to design a reasonable casting system, the structural characteristics, technical requirements, characteristics, types, and characteristics of the magnesium alloy must be carefully analyzed.

Magnesium Die Casting Parts

　　(2) Die casting process

　　In order to obtain good castings, it is necessary to select the appropriate die casting process for the equipment, including pressure, temperature, and injection rate. In terms of injection specific pressure, under the premise of ensuring the molding and operation requirements of the casting, the lower specific pressure is selected. The specific pressure of the magnesium alloy casting is 30-50MPA, and the stress casting is 50-80MPA, and the airtightness is good. The filling speed of large flat-wall castings and standard castings is 80-100 MPA. From the filling speed point of view, the bump filling speed directly affects the internal and external quality of the die-casting parts.

　　(3) Casting operations

　　In die casting production, the environment, die casting cycle, coating, number of castings, operators and abnormal conditions are all decisive factors affecting the quality of die casting. The magnesium alloy die-casting coating can prevent the adhesion of the alloy, reduce the surface conflict between the casting and the cavity, reduce the anti-ejection force of the casting, ensure the smooth release of the casting, and prevent the deformation and cracking of the casting. The spraying is uneven or too thick. Since the transpiration gas collects in the cavity, it is easy to cause pores and pinhole defects in the casting to form a bad casting. In die-cast magnesium alloys, three factors should be considered, one air, two temperatures, and three humidity. Assuming that the three elements are well distributed, the yield will increase.

　　(4) Die-casting alloy

　　The alloying elements commonly used in Magnesium Die Casting Parts fluids are aluminum and zinc. In order to ensure the casting performance, the aluminum content of the die-cast magnesium alloy is >3%, and the zinc content is <2%. Otherwise, short cracks will occur. Non-metallic inclusions and metal inclusions in magnesium alloys have different effects on the quality of the casting.

　　(5) Casting structure

　　Die casting process planning is to analyze the process rationality of die casting structure, fully consider the requirements of various aspects, such as die casting process characteristics, die casting structure characteristics and casting finishing, surface treatment, machining and so on. Other follow-up procedures, planning a reasonable die-casting basic structure. Reasonable casting structure can shorten the test period and ensure product quality.

　　Our company is Metal Accessories Manufacturer, welcome to come to us.