A selection important factors affect the gasket

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Carbide since the early 1920s by German scientists since the invention of its "widia" (like diamond) name to market, and first production of tungsten tensile modulus industrial applications to replace the expensive diamond tensile modulus. Carbide started late, but rapid development. At present, carbide die basically been serialized and standardized. In recent years, the development of the situation, the theory of the research and design of carbide die deeper and more scientific, broader application.


On the development of new carbide materials, a few years ago for the iron-nickel-generation drilling hot. Hunan Metallurgical Materials developed Carbide equivalent YG, YG20, YG25 of high strength and toughness, received good results for cold heading dies, cold extrusion die. Tianjin Carbide Institute also developed a considerable YG (15-20) to the iron-nickel-generation drill carbide die, standard parts in the roll forging the ball cold heading with YG20 effect quite. The last few years new research Popular is a fine grain, fine grain, even nanocrystalline carbide and carbide gradient. Gradient cemented carbide another composition gradient, organizational structure gradient, molten metal infiltration processing method is also useful addition to production gradient Carbide, such as gradient carbide anvils. Fine grain and ultra-fine grain cemented carbide market, such as fine-grained YGS Drawing Die when in drawing <φlmm wire, three times the general drawing dies. In addition, there are cast-inlaid carbide hot die in tube rolling with the rolling achieved very good results.

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Introduction

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