Surface treatment process before drawing of steel cord wire rod

The invention belongs to the technical field of preparation and processing of steel cords, and particularly relates to a surface treatment process before drawing of a steel cord wire rod. Lubricating powder is fully dispersed in boronizing liquid according to the concentration of 200-500 g/L to form turbid liquid to serve as surface treatment liquid, after the surface treatment liquid is used for coating the surface of the pretreated wire rod, polyethylene wax with the melting point being 110 DEG C or above is molten, and then the surface of the wire rod is subjected to surface treatment; and after being sprayed on the surface of the coated wire rod in a normal-temperature environment to form a polyethylene wax film with the thickness of 50-300 microns, the polyethylene wax film is fully heated and dried at the temperature of 100-110 DEG C. 本发明属于钢帘线制备加工技术领域，特别涉及一种钢帘线盘条拉拔前的表面处理工艺。将润滑粉按照200～500g/L的浓度充分分散于硼化液中形成悬浊液作为表面处理液，用该表面处理液对经过预处理后的盘条表面进行涂覆后，将熔点为110℃以上的聚乙烯蜡熔融后，于常温环境中喷涂于经过上述涂覆处理的盘条表面形成厚度为50～300μm的聚乙烯蜡膜后，于100