三、提高导轨耐磨性机床是否大修常常取决于导轨的磨损程度,提高导轨的耐磨性和抗擦伤能力以延长大修周期和机床寿命,在经济上有重要意义。因此,JB 2278-78《金属切削机床通用技术条件》明确要求:“机床重要导轨副应采取耐磨性措施(如耐磨铸铁、表面淬硬处理、镶钢导轨、塑料导轨、静压导轨等), Third, to improve the wear resistance of the guideway Whether the machine tool overhaul often depends on the degree of wear of the guide rail to improve the wear resistance of the guide rail and anti-abrasion ability to extend the overhaul cycle and the life of the machine is economically significant. Therefore, JB 2278-78 “General technical requirements for metal cutting machine tools,” clearly requires: "Important machine tool pair should take wear resistance measures (such as wear-resistant cast iron, surface hardened, inlaid steel rails, plastic rails, hydrostatic rails, etc. ),