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weilong

Doğum tarihi Eylül 11, 1995 · Bayan
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Ekleyen
Temmuz 22, 2021
In our daily life, or work and study, we can all see aluminum die casting, which shows that the scope of aluminum die casting is very wide. So what are the key points of Aluminum Die Casting wall thickness design? Wall thickness should be fully considered when designing the aluminum die-casting structure. Wall thickness is a factor of special significance in the die casting process. Wall thickness has a close relationship with the entire process specification, such as the calculation of filling time, the selection of gate speed, Calculation of solidification time, analysis of mold temperature gradient, the effect of pressure (final specific pressure), the length of mold retention time, the level of casting ejection temperature and operating efficiency; if the design wall thickness is too thick, shrinkage holes, sand holes, pores, etc. will appear. External surface defects such as coarse internal crystal grains reduce the mechanical properties and increase the quality of parts, leading to increased costs; too thin design wall thickness will cause poor aluminum liquid filling, difficult molding, poor aluminum alloy dissolution, and difficulty in filling the surface of castings. Lack of material and other defects, and bring difficulties to the die casting process; with the increase of pores, the internal pores, shrinkage, and other defects of die castings increase. Therefore, under the premise of ensuring that the castings have sufficient strength and rigidity, the wall thickness of the castings should be reduced as much as possible And keep the thickness of the section uniform. China die casting factory attaches great importance to the structural design of die castings, including the standard requirements for the draft angle. chinaweilong.cn [img]http://www.gelbize.com/PF.Base/file/attachment/2021/07/ddd81c621d1d4b2f837fbce55a8d4de3_view.jpg[/img]

Ekleyen
Temmuz 15, 2021
The first step of die casting is structural design, so the Die casting manufacturer will be extra careful in design. Today we will talk about its structural design. Die castings tend to use uniform thin walls. To improve their strength and rigidity and prevent deformation, the method of increasing the wall thickness should not be used alone, but appropriate thin-walled reinforcing ribs should be used for this purpose. The stiffeners should be arranged symmetrically and have a uniform thickness to avoid new metal accumulation. Its thickness is generally 2/3-3/4 of the wall thickness of the die casting. To reduce the resistance during demolding, the reinforcing ribs should have a casting slope. The rounded corners can make the molten metal flow smoothly, improve the filling characteristics, and the gas can be easily discharged. At the same time, avoid stress concentration caused by sharp corners and lead to crack defects. Especially when die castings need to be electroplated, the rounded corners are necessary to ensure a good electroplating effect. Of course, the structural design of die-casting parts such as the OEM aluminum enclosure still needs to pay attention to many points, in short, you have to be careful. chinaweilong.cn

Ekleyen
Temmuz 8, 2021
Aluminum Die Casting is a kind of die casting method that we are very familiar with, so what is the reason for the paint layer of die casting to fall off? The reason for the paint peeling off: The paint layer of the die-casting part is mainly due to the insufficient adhesion between the paint and the die-casting part. The adhesion of the spray paint of die castings depends on the quality of the pre-painting treatment. The pre-treatment is to match the appropriate cleaning agent according to the material, not just to remove the oil. There is a layer of release (release) agent on the surface of a carbonized film formed by high-temperature carbonization of the die casting. This film is not conducive to the adhesion of the paint, and it is not conducive to the salt spray test after painting. Therefore, the release agent must be removed at the same time as the oil and then passivated to meet the various test requirements of spray paint. There are the following influencing factors: 1. The coating and punch oil are not cleaned; 2. The cutting oil in the subsequent processing of the die casting is not cleaned; 3. The surface oxide layer of the die casting is not active; 4. The phosphating process of the die casting is not clean. Do it well; 5. Paint problems; 6. Baking temperature, etc. Of course, China die casting factory is working hard to avoid these problems when making all kinds of die castings. chinaweilong.cn [img]http://www.gelbize.com/PF.Base/file/attachment/2021/07/dec48d5c72d7fd3344b98e768bd220cb_view.jpg[/img]

Ekleyen
Temmuz 1, 2021
China lead die casting is a method of casting liquid die casting. Die casting is a precision casting method that uses high pressure to force the molten metal into a metal mold with complex shapes. The die-casting die forging process is a process completed on a dedicated die-casting die forging machine. Its basic process is as follows: first low-speed or high-speed casting of molten metal into the cavity of the mold, the mold has a movable cavity surface, it is pressurized forging with the cooling process of the molten metal, which eliminates the shrinkage of the blank. Loose defects also make the internal structure of the blank reach broken grains in the forged state. The comprehensive mechanical properties of the blank have been significantly improved. Die casting is a precision casting method. The dimensional tolerances of die castings cast by die casting are very small, and the surface accuracy is very high. In most cases, die castings can be assembled and applied without turning. Parts can also be cast directly. At present, there are only six types of die-casting alloys: zinc, tin, lead, copper, magnesium, and aluminum. Among them, copper alloys have the highest melting point, and China lead die casting factory has a place at home and abroad. chinaweilong.cn [img]http://www.gelbize.com/PF.Base/file/attachment/2021/07/dcf550aa520f3d4e133af46cea826e38_view.jpg[/img]

Ekleyen
Haziran 24, 2021
Many Aluminum Die Casting used around us, ranging from various parts to large household appliances, all of which are inseparable from various alloy die castings. Today we will talk about the delivery, packaging, transportation, and storage of die castings. 1 The supplier shall provide the buyer with an inspection certificate to show that the inspection of each batch of die castings meets the requirements of this standard. 2 When the qualified die-casting parts are delivered, they must be accompanied by an inspection certificate. The following content should be written on it: product name, product number, alloy grade, quantity, delivery status, and manufacturer's name. Inspection mark and delivery time. If there are special inspection items, the inspection conditions and results should be indicated on the inspection certificate. 3 The packaging of die-casting parts should be firm to ensure the safety and cleanliness of the product during transportation and storage. The product name, product number, quantity, date of manufacture, and name of the sending and receiving unit should be indicated on the surface of the packing box or the label. 4 The product should be stored in a dry, ventilated, and non-corrosive gas environment. These are the things China die casting factory pay attention to when delivering die castings. chinaweilong.cn [img]http://www.gelbize.com/PF.Base/file/attachment/2021/06/1a4e9d77c2f4270d5fe4e6bb70134681_view.jpg[/img]

Ekleyen
Haziran 10, 2021
We all know that zinc die casting belongs to metal casting, and metal casting is to inject molten metal into a hollow casting mold made of high-temperature-resistant materials and then obtain a product of the desired shape after condensation. The result is forced conversion. High-pressure casting can fill the mold quickly, with high production efficiency, good product density, high hardness, and good surface finish. It can produce relatively thin parts with thick walls. At the same time, due to the filling of high-pressure air, there are more gases involved in the product, which is easy to be in the product. Porosity is formed inside, so heat treatment cannot be carried out (heat treatment of internal gas will expand, causing defects such as product expansion or cracks) and post-over processing (avoid passing through the dense surface layer, exposing subcutaneous pores, zinc alloy die casting waste). And lead die casting is also a kind of metal casting, with its obvious advantages and applications, which is different from zinc die casting. chinaweilong.cn [img]http://www.gelbize.com/PF.Base/file/attachment/2021/06/487dc3481ed0fad9f7b87ca547a64134_view.jpg[/img]

Ekleyen
Haziran 3, 2021
We can see all kinds of die castings around us, among them aluminum die casting. There are still many applications of Aluminum Die Casting in our lives. According to the shape of the parting surface, the die-casting parting surface can be divided into four types: straight type, skewed type, stepped type, and curved type. The flat parting surface is simple in structure and easy to manufacture. So it is widely used. For the stepped parting surface, the pouring system is generally set on one stepped surface in between, and the overflow system is set on the other stepped surface, which facilitates the filling and exhaust of the molten metal. There are many factors to be considered when confirming the parting surface. Therefore, when selecting the parting surface, in addition to the structural characteristics of the aluminum die-casting parts, combined with the arrangement of the pouring system. It should also consider and confirm many factors such as the processing technology and installation technology of aluminum die-casting molds, and the demolding conditions of die-casting parts. Nowadays, there are more and more China die casting factory , and they are getting better and better. The quality of the products is constantly improving, and it must be said that they are very good. chinaweilong.cn [img]http://www.gelbize.com/PF.Base/file/attachment/2021/06/4a3f8733f84fb89e00392da812f93a4d_view.jpg[/img]

Ekleyen
Mayıs 27, 2021
With the rapid development of die-casting processing technology, die-casting parts are used in more and more fields. China lead die casting is loved by many people because of its excellent performance and craftsmanship. The lead dies casting surface produces oxide, sulfide, or other double salt compound coating during the corrosion process, which has the effect of preventing oxidation, sulfidation, dissolution, or volatilization, so it has good resistance in air, sulfuric acid, freshwater, and seawater. Erosive. If lead alloy contains impurities such as bismuth, magnesium, zinc, etc., which are not solid-soluble in lead or form the second phase, the corrosion resistance will be reduced; adding tellurium and selenium can eliminate the harmful effects of impurity bismuth on corrosion resistance. Adding antimony and tellurium to the lead alloy containing bismuth can refine the grain structure, increase the strength, inhibit the harmful effects of bismuth, and improve the corrosion resistance. On the premise of satisfying product functions, reasonably design die castings, simplify die casting mold structure, reduce die casting costs, reduce die casting defects, and improve die casting parts quality. With the continuous efforts of China lead die casting factory , the product quality and product defects of lead die casting have been improved a lot, and the quality has been greatly improved. chinaweilong.cn [img]http://www.gelbize.com/PF.Base/file/attachment/2021/05/c9e5475e76fc8acdffd38a7c51bee4c6_view.jpg[/img]

Ekleyen
Mayıs 20, 2021
Die casting is a universal process that produces engineering metal parts by melting metal under high pressure into reusable steel molds. And lead die casting is also one of the applications of die casting. The traditional die-casting process is mainly composed of four steps, or it is called high-pressure die-casting. These four steps include mold preparation, filling, injection, and sand falling, which are also the basis for various improved die casting processes. During the preparation process, a lubricant needs to be sprayed into the mold cavity. In addition to helping to control the temperature of the mold, the lubricant can also help de-mold the casting. Then you can close the mold and inject the molten metal into the mold with high pressure. The pressure range is about 10 to 175 MPa. When the molten metal is filled, the pressure will be maintained until the casting solidifies. Then the pushrod will push out all the castings. Since there may be multiple cavities in a mold, multiple castings may be produced during each casting process. The process of falling sand requires the separation of residues, including mold openings, runners, gates, and flash. This process is usually done by extruding the casting with a special trimming die. Other methods of falling sand include sawing and sanding. If the gate is relatively fragile, the casting can be directly beaten, which can save manpower. The excess mold opening can be reused after melting. The usual yield is about 67%. Of course, zinc die casting can also be the same. chinaweilong.cn [img]http://www.gelbize.com/PF.Base/file/attachment/2021/05/b63ccf2afe21d775953f571507433520_view.jpg[/img]

Ekleyen
Mayıs 12, 2021
Casting is one of the basic processes of modern machinery manufacturing. Since the casting billet is close to forming, the purpose of no processing or a small amount of processing is achieved, the cost is reduced, and the time is shortened to a certain extent. However, Die casting manufacturer wants to have good product quality and must reduce the tendency of casting defects. The local thick section of the casting must be used as much as possible, and the whole structure should be reinforced to properly strengthen the ribs. Cast holes in the cast wall, strengthen with edges to reduce wall thickness. During the cooling process, the casting structure must be able to shrink as unimpeded as possible. It is necessary to avoid large horizontal planes in castings. In large-area sandwich chambers, such as casting internal waterways and airways, several connecting pillars are needed. Of course, it is necessary to ensure that the casting has good formability and control the minimum thickness of the casting to exceed the allowable value. The same is true for OEM aluminum enclosure , which are very important in terms of product quality and molding. chinaweilong.cn [img]http://www.gelbize.com/PF.Base/file/attachment/2021/05/8cceff3aa1d4b408bc1656dc1a5c2113_view.jpg[/img]