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为了研制钢的温锻用新润滑剂,制作了用高频感应线圈加热的测量高温摩擦的装置。在摩擦试验中,四种润滑剂包括Na_2B_4O_7+10％Bi_2O_3,Na_2B_4O_7+10％PbO,B_2O_3+25％石墨和B_2O_3+33％MoS_2,显示出良好的摩擦特性。同时它们的摩擦系数非常低,特别是在500～700℃的较高温度范围。然后将这四种润滑剂用于断面缩小率为20％及60％的反挤压。SUS304不锈钢和S45C碳素钢一样,在300～700℃温度范围内采用这
In order to develop a new lubricant for warm forging of steel, a device for measuring high-temperature friction heated by a high frequency induction coil was manufactured. In the friction test, the four lubricants include Na 2 B 4 O 7 + 10% Bi 2 O 3, Na 2 B 4 O 7 + 10% PbO, B 2 O 3 + 25% graphite and B 2 O 3 + 33% MoS 2, showing good tribological properties. At the same time their friction coefficient is very low, especially in the higher temperature range of 500 ~ 700 ℃. The four lubricants were then used for the anti-extrusion with reduction of area of 20% and 60%. SUS304 stainless steel and S45C carbon steel, at 300 ~ 700 ℃ temperature range using this