直径50 38。不锈钢制作，表面拉丝处理！
Diameter of 5038. Stainless steel, surface brushed treatment!
根据铝材的表面处理可以分为：普通喷涂、碱砂氧化、碱砂喷涂、亮光拉丝、香槟拉丝、木纹、电泳。 。
According to the aluminum surface treatments can be divided into: ordinary spray, sand oxidation of alkali, alkali sand spraying, light wire drawing, champagne drawing, wood, electrophoresis.
介绍采用热化学共渗法对硬质合金拉丝模芯进行超硬化处理，以提高其表面硬度的方法。
The article introduces the method of superhardening treating hard alloy drawing die core with thermochemistry copermeation method so as to improve its surface hardness.
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