Investment precision casting is developed on the basis of ancient wax casting.As an ancient civilization, China is one of the earliest countries to use this technology. As far back as hundreds of BC, the ancient working people of our country created this lost wax casting technology, which was used to cast bell tripans and utensils with various fine patterns and characters, such as the tomb plate of Marquis Yi of Zeng in the Spring and Autumn Period.The base of the tomb of Marquis Yi of Zeng is a number of intertwined dragons, which are connected end to end and staggered up and down to form a hollow multi-layer moire pattern. It is difficult to make these patterns with ordinary casting process, while the casting process with lost wax can make use of the characteristics of paraffin wax without strength and easy to carve.With ordinary tools can be carved with the tomb of Marquis B to get the same paraffin material handicraft, and then add gating system, coating, dewaxing, pouring, you can get exquisite tomb of Marquis B of Zeng.
Modern investment casting method was applied in industrial production in the 1940s.The development of aviation jet engines at that time required the manufacture of heat-resistant alloy parts with complex shapes, precise dimensions and smooth surfaces, such as blades, impellers and nozzles.Due to heat resistant alloy materials difficult to machining, complex shape parts, so that can’t or difficult to use other methods, therefore, need to find a new precision forming technology, then draw lessons from the ancient tradition of lost wax casting, after improvement of materials and technology, modern investment casting method on the basis of ancient technology for the development of the important.Therefore, the development of the aviation industry has promoted the application of investment casting, and the continuous improvement and perfection of investment casting have also created favorable conditions for the aviation industry to further improve its performance.Investment casting was applied to industrial production in China in the 1950s and 1960s.Subsequently, this advanced casting process has been greatly developed, and has been widely used in aviation, automobiles, machine tools, ships, internal combustion engines, gas turbines, telecommunications instruments, weapons, medical instruments and cutting tools and other manufacturing industries, as well as in the manufacture of arts and crafts.
Post time: Jun-09-2021