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磨削是提高钢制零件表面精度的常用方法。但磨削会产生高温,可能引起零件表面烧伤,降低了表面质量。因此,需严格控制磨削质量。目前国内外惯用腐蚀检查磨削烧伤。 近几年,我国引进了国外许多新技术。英、法、美一些有关公司的烧伤检验工艺,值得我们参考。 1.表面清理工序 零件腐蚀检验前需进行认真的清洗除油。外国几家公司多用含氯溶剂蒸气,或用NaOH、NaCN配制的碱性溶液通6～12V、750A的直流电,进行电解清理。上述方法既不会腐蚀零件,也免除了有机溶剂引起的防火防爆要求,是快速经济的除油方法。
Grinding is a common method to improve the surface accuracy of steel parts. However, the grinding will produce high temperatures, may cause parts of the surface burn, reducing the surface quality. Therefore, the need to strictly control the quality of grinding. At home and abroad commonly used corrosion inspection grinding burn. In recent years, China introduced many new technologies abroad. Britain, France, the United States some of the company’s burn inspection process, it is worth our reference. 1. Surface cleaning process parts corrosion test before the need for serious cleaning degreasing. Several foreign companies use chlorine solvent vapor, or NaOH, NaCN prepared alkaline solution through 6 ~ 12V, 750A DC, electrolytic cleaning. The above method not only corrodes parts, but also eliminates the requirements of fire-proof and explosion-proof caused by organic solvents, and is a fast and economical degreasing method.