Precision forging it not only applies to various types, all kinds of alloy, but alsoproduce the casting dimension precision, surface quality than other precision forging method must be high, and other precision forging method is difficult to cast the complex, high temperature resistant, not easy machining castings, can be used formelting
Precision die forging cast. The tomb of Ceng Houyi statue base for many mutualwinding dragon, they end to end, staggered up and down, multilayer moire patternforming a hollow in the middle, these designs with ordinary precision forging process are hard to make out, but the lost wax method with precision forging process
The characteristics, can use paraffin no strength, easy to carve, with ordinary tools can carve out and to get the tomb of Ceng Houyi statue as material handicraft of paraffin wax, and then additional gating system, coating, dewaxing, pouring, can getthe tomb of Ceng Houyi statue exquisitely
.
Modern revestment precision forging method practical application in twentieth Centuryforty years in industrial production. The development of the jet engine, to produce likeblade, impeller, nozzle and other complex shape, heat-resistant alloy parts size precision and surface finish. Because the resistance
Thermal alloy material is difficult to machining, complex shape parts, so that cannot ordifficult to use other methods of manufacturing, therefore, need to look for a new precision molding process, then handed down from ancient times. The lost waxprecision forging, through the material and process improvement, modern revestmentprecision
Dense forging method to obtain the significant development in ancient times based on the technology.
The so-called revestment precision forging process, simple said is the use of fusiblematerials (such as wax or plastic) made from fusible model (referred to as the mold or model) in refractory coating, special several layers of the coating, the dry and hardento form a whole shell, and then steam or hot water from the
Melt the model shell, and the shell into the sand box, dry sand filling in the surrounding, the cast into the furnace through the high temperature roasting (such as the use of high-strength shell, need not other and direct baking shell after stripping),mold shell roasting or later, in the
In pouring molten metal and casting.
The lost wax casting precision forging now say revestment precision forging, precision forging technology is a less cutting or no cutting, is an excellent technology forprecision forging industry, and its application is very extensive.
Revestment precision forging is developed based on the ancient wax precision forging. So, the development of aviation industry to promote the application ofrevestment precision forging and casting, precision forging of refine on and perfect,but also for the aviation industry to further improve performance created favorable
The premise. As one of the countries with ancient civilizations, Chinese. Using the technology of the earlier, in the centuries BC, ancient Chinese people to create this kind of lost wax precision forging technology, used for precision forging with a variety of patterns and fine words of tripod and vessels products, such as
Age at the time of the tomb of Ceng Houyi statue etc..