With the rapid development of the industrial economy, the demand for lead die casting is increasing, and the die casting process is constantly improving.
The principle of the die-casting process is to use high pressure to press molten metal into a precision metal mold cavity at high speed, and the molten metal is cooled and solidified under pressure to form a casting. During the die-casting process, the speed is directly affected by the pressure, and together with the pressure, it plays an important role in the internal quality and the clarity of the surface profile. The speed has two forms: injection speed and gate speed.
The gate velocity is the linear velocity at which molten metal enters the cavity through the gate. The higher the gate speed, even if the lower specific pressure is used, the molten metal can quickly fill the cavity before solidification, to obtain a die-casting with clear contours and smooth surface, and to increase the dynamic pressure of the molten metal. If the gate speed is too high, it will also bring a series of problems. The main reason is that it is easy to envelop the gas to form bubbles; the molten metal enters the cavity as mist and adheres to the cavity wall and the subsequent molten metal cannot be fused to form surface defects. And oxidation inclusions, accelerate the wear of the die-casting mold, etc.
Of course, the influence of zinc die casting is also very important. chinaweilong.cn

Although my country started late in the die casting industry, in recent years, China lead die casting has taken a place everywhere. The gap with the world is getting smaller and smaller. Today we will talk about the functional structure design of die castings.
The functional structural design of die castings is the core of the structural design of die castings. It determines the size, wall thickness, and shape required to realize the function of die castings, and checks the deformation and deformation of die castings during static load or dynamic load use. The changing state of fatigue, wear, etc., to meet the safety of its use.
Designing the functional structure of die-casting parts requires not only the quality and technical ability of mechanical structure design and machining, but also comprehensive basic knowledge of die-casting alloy, die-casting molding process, and die-casting mold design to make the design The functional structure of the die casting can meet the various technical requirements specified by the die casting and the functions and performance within the service life, and it is reliable, safe and economical.
Of course, despite this, China lead die casting factory still needs to continue to explore and make progress. chinaweilong.cn

OEM Aluminum Enclosure has lightweight, high compressive strength, beautiful surface, layered feeling, and strong corrosion resistance. It is in line with contemporary aesthetics, low-key and luxurious, and is favored by many customers. After using it for a while, we will find that the aluminum shell is easily scratched, so what can we do to avoid the following a little bit?
Place the profiles reasonably in the material frame to avoid mutual friction as much as possible; use soft felts and plastic strips to separate the profiles from the auxiliary equipment to reduce the friction between them and cause damage; enterprises must improve the quality of mold repairs, The aluminum shell mold must be nitrided regularly and strictly implemented the nitriding process; clean up the discharge track and swing bed and other working belts in time to prevent debris from affecting the quality of aluminum shell production and processing; strictly control the quality of the chemical composition of the ingot; improve the mold Repair quality, improve mold manufacturing precision and mold regular nitriding and strictly implement nitriding process parameters; handle with care in the production process of aluminum housing to avoid scratches caused by human factors.
Of course, the most important thing is that Die casting manufacturer must first guarantee the quality of the product. chinaweilong.cn

In our daily life, zinc die casting is a very popular die casting product, but the products are naturally good and bad. Some die castings will have some unavoidable defects. Let’s take a look at them today.
Since the boundary marks between the regions of different metal materials are significant, the defects of the water surface are very easy to be found under the optical microscope. When an area condenses rapidly, the dendritic structure in the early stage of injection is much more detailed than the post-condensed surface. Generally, very cat-like currents are very easy to confuse with the defects of the water surface. The difference can be observed with an optical microscope. If there are many patterns on the surface of the casting, it is generally all water flow. If the return rate of the two areas on the surface of the casting is not the same, it is generally a defect of the water surface.
Of course, lead die casting may also have the same problem, so we need to be extra careful whether it is processing or post-production. chinaweilong.cn

At present, most of the mobile phone cases, TV middle frames, mobile power supplies, audio cabinets, etc., are mostly OEM Aluminum Enclosure , so why should we choose aluminum alloy as raw materials for these enclosures?
Aluminum alloy is an alloy based on aluminum and a certain amount of other alloying elements, and it is one of the light metal materials. An alloy based on aluminum with a certain amount of other alloying elements is one of the light metal materials. In addition to the general characteristics of aluminum, aluminum alloys have some specific characteristics of alloys due to the different types and quantities of added alloying elements. The density of aluminum alloy is 2.63～2.85g/cm, it has high strength (σb is 110～650MPa), the specific strength is close to that of high alloy steel, the specific stiffness is higher than that of steel, it has good casting performance and plastic processing performance, and good electrical conductivity. , Thermal conductivity, good corrosion resistance, and weldability can be used as structural materials, has a wide range of applications in aerospace, aviation, transportation, construction, electromechanical, light, and daily necessities.
Because of the characteristics of the above-mentioned aluminum alloy, Die casting manufacturer will choose aluminum alloy as the raw material for making the shell. chinaweilong.cn

In recent years, lead die casting has been used more and more in daily life. The die casting process is a process in which the three elements of die casting machine, die casting mold, and alloy are organically combined and used comprehensively.
The process of filling the cavity with metal during die-casting is a process of unifying process factors such as pressure, speed, temperature, and time. The influence of mold structure design, heat treatment process, mold manufacturing, and mold assembly on the life of lead alloy die-casting molds.
The principle of the die-casting process is to use high pressure to press molten metal into a precision metal mold cavity at high speed, and the molten metal is cooled and solidified under pressure to form a casting. Cold and hot chamber die casting are two basic methods of the die casting process. In the cold chamber die-casting, the molten metal is poured into the press chamber by a manual or automatic pouring device, and then the injection punch advances to hydraulically press the metal into the cavity. In the hot chamber die casting process, the pressure chamber is perpendicular to the crucible, and the molten metal flows into the pressure chamber automatically through the feed port on the pressure chamber. The injection punch moves downward to push the molten metal into the cavity through the gooseneck. After the molten metal has solidified, the die-casting mold is opened and the casting is taken out to complete a die-casting cycle.
The principle of zinc die casting is the same. chinaweilong.cn

As one of the die casting parts, zinc die casting is welcomed by everyone because of its good performance and wide range of functions. Today we talk about the design of zinc die casting .
The structural design of die casting is the first step of die casting work. The rationality of the design and the adaptability of the process will affect the smooth progress of the subsequent work, such as the selection of parting surface and the types of defects, etc., will be based on the pros and cons of the die casting itself.
When designing die-casting parts, to ensure the reliability of strength and rigidity, the thicker the wall, the better the performance, for die-casting parts, as the wall thickness increases, the mechanical properties decrease significantly. The reason is that in the die-casting process, when the molten metal enters the cavity at high pressure and high speed, it quickly cools and solidifies after it contacts the surface of the cavity. A layer of fine grain structure is formed on the surface of the chilled die casting. The thickness of this layer of dense fine grain structure is about 0.3, so the thin-walled die casting has higher mechanical properties. On the contrary, the crystal grains of the center layer of thick-walled die-casting parts are relatively large, which tends to produce defects such as internal shrinkage cavities, pores, and dents on the outer surface, so that the mechanical properties of the die-casting parts decrease as the wall thickness increases.
The same is true for lead die casting , not thicker the better. chinaweilong.cn

Lead die casting is a kind of pressure casting part, and China lead die casting has a late start, so some aspects need to be improved. But it is also very mature.
Application of lead die casting Aluminum materials and aluminum alloys have good fluidity and plasticity, so they can make a variety of complex and difficult die castings. Castings made of aluminum alloy and metal aluminum have high precision and surface finish. This greatly reduces the amount of machining of castings, greatly reduces labor intensity and saves electricity and metal materials. Because of its high internal and external quality, aluminum die castings are widely used in automobile manufacturing, internal combustion engine production, motorcycle manufacturing, electric motor manufacturing, transmission machinery manufacturing, precision instruments, landscaping, power construction, and other industries, Has become the new darling of the die-casting industry.
Now that there are so many application fields for lead die casting, the development of China lead die casting factory is gradually getting better and better, and the quality is constantly improving. chinaweilong.cn

Zinc die castings are currently widely used in various decorations, such as furniture accessories, architectural decorations, bathroom accessories, lighting parts, various metal buckles, etc. Therefore, the surface quality of the castings is high, and good surface treatment performance is required. Therefore, China zinc die casting manufacturer has always had high-quality requirements for zinc die casting parts.
Issues that should be paid attention to in the production of zinc die casting , the ratio of the new material to the return material such as the nozzle, the return material should not exceed 50%, and the general new material 70%: the old material 30%; the aluminum and magnesium in the continuous remelting alloy are gradually reduced; When the nozzle material is remelted, the remelting temperature must be strictly controlled not to exceed 430℃ to avoid the loss of aluminum and magnesium; it is better to use a centralized furnace to melt the zinc alloy in a die-casting plant with conditions so that the alloy ingot and the reheating material are evenly proportioned. The flux can be used more effectively, keeping the alloy composition and temperature uniform and stable. Electroplating waste and fines should be melted separately.
Many problems need attention in the manufacturing of China lead die casting . chinaweilong.cn

With the rapid development of the die casting industry, die casting parts have been gradually applied in various fields, and the development of the Die casting manufacturer is also getting faster and faster. Many details need to be paid attention to in the production of die castings. Details determine success or failure, and these details can determine the quality of die castings. The structural design of castings should pay attention to the following points.
It is necessary to easily manufacture a model, core box, and modeling: the external shape of the casting should be as simple as possible, and the flat surface of the casting type should be minimized to facilitate demolding; the lumen of the casting should not use core or should not be used during casting Try not to use it. When using the core, it is convenient to support, fix and vent the sand. If necessary, make enough technical holes; in the die direction of the inner and outer castings and the steel rib structure, a constant structural gradient must be established; to ensure the quality of the casting The formability is good, and the minimum thickness of the control casting exceeds the allowable value.
Nowadays, the production of die-casting parts is very standardized, and the gradual production of the OEM aluminum enclosure is also very strict, so the quality is relatively controlled. chinaweilong.cn

Cash die-casting parts are becoming more and more popular, and China die casting factory is becoming larger and larger. Although die-casting plants are constantly improving the quality of die-casting parts, some problems still exist and have not been solved. Although some are solved, they will inevitably commit, such as the problem of lack of material (shrinkage dent) in castings.
In terms of die casting machine: (1) The nozzle hole is too large to cause the aluminum alloy material to flow back and shrink, and the resistance is too small and the material is insufficient to shrink. (2) If the clamping force is insufficient, the flash will also shrink. Check the clamping system for any problems. (3) Whether the tonnage of the die-casting machine is sufficient, try to choose a large-tonnage die-casting machine, and check whether the screw and barrel are worn. All of these may cause the casting lack of material, which is shrinkage and depression.
Therefore, we can only try to avoid this kind of error. When it is unavoidable, we can only try our best to solve this problem. For example, aluminum die casting can also have this kind of problem. chinaweilong.cn

In the die casting industry, what are the conditions that a Die casting manufacturer that produces hardware needs to have to improve the yield of die castings, ensure product quality, improve production efficiency and reduce the cost of die castings?
Efficient production: The hot chamber die-casting machine has high production efficiency. The temperature of the molten metal during die-casting is below 420. A pair of molds can produce hundreds of thousands of products. The advanced-performance die-casting machine can realize fully automated production with low product production costs.
Requirements for die-casting production: manufacturing procedures are only part of the entire value chain, and the importance of product design and production procedure design is increasing day by day, mainly to improve the standardization, mechanization, and automation of production procedures, strengthen the inspection of the production process, and related The post-processing capabilities and surface treatment capabilities. From die-casting blanks to die-casting products, it is necessary to add value to the products to obtain greater benefits.
Hot-selling products such as OEM aluminum enclosure require a certain production speed. chinaweilong.cn

Aluminum die casting, as one of the pressure casting parts, is actually cast in a certain mold using a casting press machine and then too much aluminum or steel. Such a process mold is an aluminum die casting .
There is an aluminum die casting auto parts, aluminum dies casting engine parts, aluminum dies casting power parts, and aluminum die-casting motor parts. There is a wide range of types. The main application so far is still in automobile manufacturers. Because of the excellent production quality, the development of the current automobile technology will be more breakthroughs and innovations.
The application of aluminum die casting in the actual engineering field is very extensive. For example, it can become an important part of any complex machinery, and it is common to use simple mechanical splicing within a certain range. Parts. And there are many kinds of aluminum die casting, and the shape is very complete.
Because of the wide application of aluminum die-casting, China die casting factory have also made a lot of technological improvements on this, and aluminum die casting is getting better and better. chinaweilong.cn

With the development of the intelligent industry, the competition of China die casting factory is becoming increasingly fierce, so if you want to gain a foothold in the die casting industry, you must be professional. So how can it be called a first-class die-casting factory?
1. Fully staffed, good quality control, the factory has a certain scale, the external environment is good, and advanced and precise die-casting processing equipment.
2. Mold designers and die-casting personnel have very rich experience, and also have a very rich ability to deal with abnormal problems.
3. For the problems and puzzles that customers want to understand, we can give customers a satisfactory answer in the shortest time.
4. The quality inspection personnel have a complete inspection process.
5. Can provide customers with one-stop service from mold design to product shipment.
Also, die-casting workshop management is also very important. When producing aluminum die casting and other die-casting parts, there are strict standards, so we must do well in workshop management.Yuyao Weilong Industrial Co. Ltd. is a good choice.

Pressure casting is an advanced casting method that has developed rapidly in modern metal processing technology. Die casting has been widely used and rapidly developed in the manufacturing industry. Die castings have become an important part of many products. With the continuous expansion of functions and applications, the quality of die castings has been continuously improved. Then there are more and more die casting manufacturers, so what qualification certifications do Die casting manufacturer have?
The component supplier must first establish an internationally recognized third-party quality system (such as ISO/TS16949) designated by the customer and pass the third-party audit and certification.  
Products must go through strict advanced quality planning (APQP) and production part approval procedures (PPAP), and undergo rigorous and lengthy product installation test assessments.
The above are two of the qualification certifications for die casting manufacturers. However, in recent years, with the continuous development of electronic products, the development of OEM aluminum enclosure is getting better and better.chinaweilong.cn

In the process of producing die-casting parts of China zinc die casting manufacturer , there will be many quality problems that appear accidentally. Of course, the reasons are also various. However, as long as timely and correct corrections are made to the problems in the production process, then it is not a particularly big problem. Today, it is said that the matrix of the cracked casting is damaged or broken. What is the reason for this defect?
The matrix of the cracked casting is damaged or broken, thus forming a slender gap, showing an irregular line shape, and has a tendency to develop under the action of external force, this kind of defect is called a crack. In the production process of die castings, cracks are not allowed to exist.
The reasons for the cracks are: casting structure and shape The transition of the thick wall and the thin wall on the casting avoids the sharp corners of the casting. The corners on the casting are not enough, and the place where the push rod can be placed is not enough, which causes the uneven distribution of the push rod. The design of the casting The above considerations are not well considered, and the stress will be generated when shrinking and tearing.
Of course, the defects of die castings are not only the problem of cracks, but also many other problems, but no matter what the problem is, we need to overcome it one by one, otherwise there will be more serious problems in the quality of die castings. Defects. This is not only irresponsibility for the die castings produced by ourselves, but also irresponsibility for customers. Therefore, no matter what the reason is, we must do our best in the process of producing die castings. China lead die casting can sell well in the world market, and they are absolutely the ultimate in quality problems. Believe that we can do our best for all die castings. www.chinaweilong.cn

The application of China lead die casting and zinc die casting is still very extensive. We can see their traces whether in daily life or on the streets. However, since they are all die-casting parts, the problem of surface bubbles cannot be avoided.
One of the reasons for the blistering of die castings is intergranular corrosion. Zinc alloys are harmful impurities contained in the composition: lead, cadmium, and tin will accumulate at the grain boundaries and cause intergranular corrosion. The metal matrix is ​​broken due to intergranular corrosion and electroplating Accelerated this scourge, the parts affected by intergranular corrosion will expand and lift the coating, causing blistering on the surface of the casting. Especially in a humid environment, intergranular corrosion will cause the casting to deform, crack, or even break.
Another reason is cracks, such as water lines, cold barrier lines, and hot cracks.  Water pattern and cold barrier pattern are when the molten metal is in the filling process, the molten metal that enters first contacts the mold wall to solidify prematurely, and then the molten metal cannot be fused with the solidified metal layer, forming a stack at the butt of the casting surface Streaks and streaks are defects. The water mark is generally shallow on the surface of the casting; while the cold barrier may penetrate into the casting.
Thermal cracking: (1) When the casting thickness is uneven, stress will be generated during solidification;  (2)   ejected prematurely, the metal strength is insufficient;  (3) the force is uneven during ejection; (4) excessively high mold temperature causes crystal Coarse grains;  (5)  harmful impurities exist. The above factors may cause thermal cracking. 
When there are water marks, cold barrier marks, and hot cracks in the die casting, the solution will penetrate into the cracks during electroplating, and it will be converted into steam during baking, and the pressure will lift the electroplated layer to form blisters.
However, China zinc die casting manufacturer or other manufacturers are aware of the existence of this problem, and believe that in the production process, the probability of occurrence of this problem will only become smaller and smaller. www.chinaweilong.cn

In the production process of Lead Die Casting , the labor union encountered various quality problems, and the reasons were numerous. During the production process, we must make correct judgments on the quality problems that occur, and find out the real causes, so that we can propose corresponding practical and effective improvement measures to continuously improve the quality of die castings.
The first is undercasting: that is, during the forming process of the die casting, the filling of certain parts is not complete, we call it undercasting. When the lack of casting is serious, it can be regarded as the shape of the casting does not conform to the drawing. Usually, we don’t allow undercasting to exist in the production process.
The reasons for the under-casting are: (1) The filling condition is poor, and the under-casting part shows irregular condensed metal. When the pressure is insufficient or insufficient and the metal at the flow front solidifies prematurely, under-casting occurs in corners, deep recesses, thin walls (even thinner than the average wall thickness), and cylindrical hole walls. Excessive mold temperature, low-alloy pouring temperature, and poor position of the inner gate, resulting in relatively large flow resistance.
(2) The gas is obstructed, the surface of the under-casting part is smooth, but the shape is irregular and it is difficult to set up an overflow system. When the gas accumulates in the flow of the molten metal, the turbulence is severe and envelops the gas.
(3) There are residues in the mold cavity. The amount of paint or improper spraying method caused the coating to be partially deposited. The inlay gap of the molded part is too large, or the sliding fit gap is too large. It can be completely taken out and be sandwiched in the gap. When this kind of sheet metal protrudes more on the surrounding molding surface, the height of the protrusion is changed to the wall thickness of the casting when the mold is closed, so that the subsequent castings will have a penetrating groove there. . This penetrating groove will become a special form of undercasting. This kind of undercasting phenomenon mostly occurs in the case of a deep cavity composed of inlays. On the vertical die-casting machine, when injecting, the lower punch moves down to make the nozzle orifice insufficient, resulting in a series of poor filling conditions.
For more details, please visit: China Lead Die Casting .