Ss Die Casting

ss die casting: not only suitable for casting of various types and alloys, but also the dimensional accuracy and surface quality of the produced castings are higher than those of other casting methods, and even other casting methods are difficult to cast complex, high temperature resistant, and difficult to process All castings can be cast by investment casting.
The so-called investment casting process, simply put, is to use fusible materials (such as wax or plastic) to make a fusible model (referred to as investment model or model), which is coated with several layers of special refractory coatings, dried and hardened. After forming an integral shell, the mold is melted from the shell with steam or hot water, and then the shell is placed in a sand box, and dry sand is filled around it for molding, and finally the mold is put into a roasting furnace for high temperature Roasting (if a high-strength shell is used, the molded shell can be directly roasted without molding), after the mold or shell is roasted, molten metal is poured into it to obtain a casting.
Investment castings have high dimensional accuracy, generally up to CT4-6 (CT10~13 for sand casting, CT5~7 for die casting). Of course, due to the complexity of the investment casting process, there are many factors that affect the dimensional accuracy of castings, such as mold The shrinkage of the material, the deformation of the investment mold, the change of the line amount of the shell during the heating and cooling process, the shrinkage rate of the alloy, and the deformation of the casting during the solidification process, etc., so although the dimensional accuracy of ordinary investment castings is high, but its The consistency still needs to be improved (the dimensional consistency of castings using medium and high temperature waxes should be improved a lot).
When pressing the investment mold, the pressure type with high surface finish of the cavity is used, so the surface finish of the investment mold is relatively high. In addition, the mold shell is made of high temperature-resistant special binder and refractory paint prepared by refractory materials, which are hung on the investment mold, and the inner surface of the mold cavity that is in direct contact with the molten metal has a high finish. Therefore, the surface finish of investment castings is higher than that of ordinary castings, generally up to Ra.1.6~3.2μm.
The biggest advantage of investment casting is that due to the high dimensional accuracy and surface finish of investment castings, machining work can be reduced, and only a small amount of machining allowance can be left on parts with higher requirements, and even some castings only There is a grinding and polishing allowance, and it can be used without machining. It can be seen that the investment casting method can greatly save machine tool equipment and processing man-hours, and greatly save metal raw materials.
Another advantage of the investment casting method is that it can cast complex castings of various alloys, especially superalloy castings. For example, the blades of jet engines, whose streamlined outline and inner cavity for cooling, can hardly be formed by mechanical processing technology. The investment casting process can not only achieve mass production, but also ensure the consistency of the castings, and avoid the stress concentration of the remaining knife lines after machining.

Our customers benefit financially by purchasing precision OEM parts from us, such as iron/steel/aluminum castings, sheet metal parts, aluminum extrusions and CNC machined parts, injection molded parts.
You can customize a variety of plastic or metal parts, from prototypes to final products. Give us a concept and we will return to you with a product that we look forward to serving you in the near future.

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