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作者对低碳钢塑性加工坯件表面预处理的磷化-皂化润滑工艺进行了评论,提出了用与基体金属粘附强并具有良好摩擦性能的以乙基纤维素为基础的固体膜代替磷化-皂化润滑的设想。通过润湿角的测定和摩擦试验,说明该高分子润滑剂用于黑色金属冷挤压、冷引仲加工可以取得非常满意的效果。产品表面光洁、覆盖膜层易于清除。本文还介绍了该润滑膜在工厂中应用的情况。 在低碳钢工件毛坯冷挤压、冷引伸加工前,一般都要经过碱洗、酸洗、水洗、磷化、皂化处理,使工件毛坯表面生成一层多孔的,浸填有脂肪酸皂的磷酸盐膜,方能满足加工时对润滑的要求。这种工艺工序多,对环境污染严重、加工后残余的磷化膜难于去除。 作者选择了具有良好成膜性和塑性的高分子材料,分别测定了以其为基础的溶液表面膜张力,与基体金属的接触角和固体膜的附着力,再通过摩擦试验评定其润滑性能。对比用磷化-皂化处理的和用高分子固体润滑膜的加工后工件质量,证实了用高分子固体润滑膜代替磷化-皂化润滑的设想是可行的。
The authors commented on the phosphating-saponification lubrication process for the surface pretreatment of low carbon steel plastic blanks, and proposed to replace the phosphorus with a solid film based on ethylcellulose which has strong adhesion to the base metal and good frictional properties Assimilation - saponification lubrication of the idea. Through the determination of wetting angle and friction test, it shows that the macromolecule lubricant can be used for cold extrusion of ferrous metal, and cold drawing secondary processing can achieve very satisfactory results. Smooth product surface, covering film easy to remove. This article also describes the application of the lubricating film in the factory. In the low-carbon steel parts rough cold extrusion, cold drawing before processing, generally have to go through alkaline washing, pickling, washing, phosphating, saponification process, the workpiece blank surface to generate a porous, impregnated with fatty acid soap phosphate Salt film, to meet the processing requirements of lubrication. This process and more processes on the serious environmental pollution, processing residual phosphating film is difficult to remove. The authors chose polymer materials with good film-forming and plasticity. The surface tension of the solution, the contact angle with the base metal and the adhesion of the solid film were measured. The tribological properties of the films were also evaluated. Comparing the quality of the machined parts treated with phosphated-saponified and polymeric solid lubricant films, it was proved feasible to replace the phosphatized-saponified lubricated lubricant with a polymer solid lubricant film.