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Precision Investment Casting The Origin And The Development You All Know?
May 25, 2017

Some of the origin and development of the Precision Investment Casting process you know?

Precision Investment Casting process is made of wax model, in its appearance wrapped in multi-layer clay, adhesives and other refractory materials, heating wax melting out, resulting in the formation of refractory shell, and then melt the metal irrigation Into the shell, to be cooled after the metal cracked metal parts, this process is called metal casting precision casting, also known as Precision Investment Casting or lost wax casting.

This method has been ancient, and in the distant centuries BC, the ancient Chinese working people to create this lost wax precision casting technology, used for precision casting with a variety of fine patterns and text Zhong Ding and utensils, etc. Products. According to expert appraisal, China's unearthed bronze medal in the Shang Dynasty and the spring and autumn when the Zeng Houyi tomb to create such as the use of this very clever technology.

Zeng Houyi tomb tomb plate for a number of intertwined dragon, the first end of the connection, up and down staggered, the formation of the middle of the multi-layer cloud pattern pattern. These patterns with ordinary precision casting process is difficult to manufacture, and the use of lost wax casting process, you can use the strength of the paraffin is not easy, easy to carve the characteristics of ordinary tools can be carved with the Zeng Hou tomb to be the same Of the paraffin material of handicrafts, and then add the pouring system, paint, dewaxing, pouring, you can get the fine Zeng Houyi tomb tomb plate. In the metal jewelry and many non-metallic handicrafts on the use of this method is also a long history, is still a lot of jewelry and handicraft production of the main method.

Modern Precision Investment Casting is in the ancient wax mold on the basis of precision casting developed. During World War II, allied technical experts in Baoshan, Yunnan, saw the local people use this method to create handicrafts inspired by the improvement and use of mechanical components on the production, from the rapid development of the technology around the world. Modern Precision Investment Casting method in industrial production has been the practical application in the 20th century, 40 years. At that time the development of aviation jet engines required the manufacture of heat-resistant alloy parts such as blades, impellers, nozzles and other complex shapes, accurate dimensions and smooth surface. Because the heat-resistant alloy material is difficult to be machined, the parts are complex in shape, so that it can not or can not be manufactured by other methods. Therefore, it is necessary to find a new and precise forming process. Then, by drawing on the lost casting technology, The improvement of modern Precision Investment Casting method in the ancient process on the basis of access to important development.

The development of the aviation industry has promoted the application of Precision Investment Casting, and the continuous improvement and improvement of the Precision Investment Casting has created favorable conditions for the aviation industry to further improve its performance. Since then, this advanced precision casting process has been greatly developed and has been widely used in the manufacturing industries such as aviation, automobiles, machine tools, ships, internal combustion engines, gas turbines, telecommunications equipment, weapons, medical devices and knives. Manufacture of arts and crafts. Over the past decade, Precision Investment Casting has been a high speed forward development. The world's major industrial countries to an average of 7% to 12% of the rate of increase, special-purpose castings will be 30% of the amazing rate of increase, thus contributing to the investment in precision casting wax development technology.