Development History Of Stainless Steel Precision Casting
Development history of stainless steel precision casting
Investment casting is developed on the basis of ancient wax mold casting. As an ancient civilization, China is one of the earliest countries to use this technology, far away from BC hundreds of years, the ancient people of China has created this kind of lost wax casting technology, used to cast a variety of fine patterns and text zhongding and utensils, such as the spring and autumn of the Yi Tomb, such as the plate. Once Hou tomb of the base for a number of intertwined dragon, they are connected to each other, the upper and lower staggered, forming the Middle hollow multi-layer moire pattern, these patterns with ordinary casting process is difficult to create, and using the lost wax method casting process, can use the paraffin wax no strength, easy to carve the characteristic, with the ordinary tool can carve out with the Yi Tomb to get the same wax material handicraft, then add the pouring system, paint, dewaxing, pouring, can get exquisite Yi Tomb Zun.
Modern investment casting method has been applied in industrial production in the 1940s. The development of jet engines at that time required the manufacture of heat parts, such as blades, impellers and nozzles, which were complex in shape, precise in size and smooth in surface. Because heat materials are difficult to be machined, the shape of the parts is so complex that it is impossible or difficult to make with other methods, so we need to find a new precise forming process, and draw on the lost wax casting from ancient times, after the improvement of materials and technology, the modern investment casting method has obtained important development on the basis of ancient technology. Therefore, the development of the aviation industry has promoted the application of investment casting, and the continuous improvement and perfection of investment casting has created favorable conditions for further improving the performance of the aviation industry.
In the Fifties or sixties of the 20th century, China began to apply investment casting to industrial production. Since then, the Advanced foundry technology has been greatly developed, which has been widely used in the manufacturing industries of aviation, automobiles, machine tools, ships, internal combustion engines, gas turbines, telecommunication instruments, weapons, medical devices and knives, and is also used in the manufacture of arts and crafts products.