前言在过去的五十年里,添加剂生产厂家为了进一步满足汽车、卡车和驱动桥制造者的要求,改进了许多添加剂。例如,双曲线齿轮的发展,促进了极压齿轮油添加剂的问世,以及第二次世界大战年间,发展了多效齿轮油添加剂。极压工业齿轮油的发展就远不如车辆齿轮油那样引人注目。在这种产品系列中,同样类型的添加剂使用了几十年,直到六十年代为止。由于生产的发展,高负荷和高温要求齿轮油改进极压性和热安定性。 Preface In the past 50 years, additive manufacturers have improved many additives to further meet the requirements of automotive, truck and transaxle manufacturers. For example, the development of hyperbola gears has contributed to the advent of extreme pressure gear oil additives and the development of multi-effect gear oil additives during the Second World War. The development of extreme pressure industrial gear oil is far less compelling than the vehicle gear oil. In this product line, the same type of additive was used for decades until the 1960s. Due to the development of production, high load and high temperature requirements gear oil to improve extreme pressure and thermal stability.