Among the many different kinds of handicrafts that are exported in international trade, businesspeople from other countries place a high value on metal handicrafts that have a simple texture, are non-toxic, harmless, and free of pollution. Additionally, these types of handicrafts are made of metal. The majority of its components are zinc alloys, and the majority of these zinc alloys have a low melting point, good casting performance, and melt at a temperature low enough that they do not attract iron when die casting. The majority of its components are zinc alloys. When placing an order, foreign investors only provide the physical product itself, not the product's blueprints or drawings.
1. Extensive investigation as well as research
An investigation into the components that make up die-casting molds, as well as the manufacturing procedures. Die casting is a method of casting that involves filling the die-casting cavity with liquid or semi-liquid metal under high pressure (from a few MPa to tens of MPa) and high speed (between 5 and 50 meters per second), and then rapidly solidifying the metal under pressure. Die casting is a method of casting that has become increasingly popular in recent decades.In the cavity of the die-casting mold, working conditions are notoriously challenging for everyone involved.
When being injected, in addition to being subjected to high-temperature and high-speed impact in a very short period of time, the temperature difference changes greatly. This results in the thermal fatigue being large, which makes it easy for the material to deform and crack. In addition, the thermal fatigue is caused by the fact that the material is subjected to these factors in a very short period of time.
As a consequence of this, the material that is utilized most frequently for the die-casting model cavity of the Yuge zinc alloy casting machine is either 5CrNlMo or 3Cr2W8V.Not only are the procedures for producing these molds difficult, but the costs associated with doing so are quite high due to the high price of the raw materials that are utilized.On electrodes typically made of copper or graphite, patterns are traditionally carved by hand, and an EDM machine is then used to complete the processing and formation of the pattern.However, the manufacturing cycle time is quite lengthy, and the associated costs are quite substantial.
The experiment turned out well, and Yuge was able to accomplish all that he set out to do.The thermal conductivity, strong vibration, and elongation of the material are all below average; however, the growth phenomenon that takes place at high temperatures (above 425 degrees Celsius) is particularly problematic because it reduces the material's overall mechanical properties and makes it more prone to cracking and burning.Because of this, the cavity that is made of gray cast iron has a very limited lifespan.Shenzhen ()In order for Yuge to realize its objective of increasing the amount of time a mold is useful, it is necessary for the company to exercise stringent control over the temperature at which the CNC machining mold operates.It is a circular chip that has a diameter of approximately 80 millimeters and weighs only 20 grams in total.
The melting point of zinc alloy is approximately 400 degrees Celsius, but it contributes very little heat to the mold when it comes time to fill the cavity.The following are the steps that we have taken to improve our process:(1) Prevent the formation of gray cast iron by keeping the temperature of the molten metal lower than 400 degrees Celsius and using a method of cooling the mold in which the water does not circulate. Both of these steps should be taken in order to prevent the formation of gray cast iron.(2) During the process of die casting, reduce the amount of heat that the mold is able to absorb by exercising stringent control over the amount of time it is allowed to hold the metal.This is done to reduce the effect of the molten metal's thermal shock on the mold cavity, as well as to reduce the internal stress of the mold wall and the interaction between the molten metal and the mold.
Additionally, this is done to reduce the interaction between the molten metal and the mold.The spindle oil that Yuge uses is N7.Bringing together of spaces in a manner analogous to the welding process. Do a fantastic job of preheating the mold and performing intermediate annealing while it is being used. This will ensure that the mold comes out perfect every time.
2. The sequence of steps in the process
After using the physical sample as a mold, pour one concave and one convex wax mold into the tank (it is important to remember to apply release agent to the physical sample before filling the tank). Get the shape of the shell ready. Adjust the proportions of the investment.
3. Necessary Prerequisites for the Procedure
1) Due to the fact that this mold requires three stages of shrinkage before it can be used, there will be dimensional errors in the finished products that are produced using this mold.However, after each of these three shrinkages, the initially very delicate embossed pattern zinc alloy die casting factory that was present in the physical sample might become obscured. This could happen because of the way shrinkage works.The severe character of the depressing atmosphere.
2) When Shenzhen Yuge is in the process of preparing the shell mold, during the attachment of the first layer of fabric slurry, they are required to use a brush to brush the surface slurry on the wax mold in order to eliminate the bubbles that are formed as a result of the surface tension of the slurry, which is very important for the mold. This is done in order to ensure that the mold is of the highest quality possible. This is because the bubbles prevent the mold from functioning correctly in its intended manner.
3) The baked shell needs to go through a process that consists of low temperature, heat preservation for more than six hours, and high temperature in order to prevent pores from forming on the surface of the cavity blank. This process is necessary in order to prevent pores from forming.
4. The procedure of engraving designs into the surface of the material can now be streamlined to the same level of complexity as the process of making repairs to the wax model.
