五、温挤加热用的加热设备准确地控制加工温度就能保证产品尺寸的一致性。采用煤气加热、电阻加热、感应加热等方法时,温度的控制不难办到。快速加热,可以避免或减少氧化和脱碳。但是不建议使用盐浴炉加热,因为盐液被带入到挤压模内很难清理。高铬钢(1Cr18Ni9Ti,Cr17Ni2,Cr9Si2,4Cr13等)在800℃以前没有氧化问题。其他钢在200～400℃开始氧化。能够采用真空加热或无 Fifth, warm extrusion heating equipment used to accurately control the temperature can ensure the consistency of product dimensions. Using gas heating, resistance heating, induction heating and other methods, the temperature control is not difficult to do. Fast heating avoids or reduces oxidation and decarburization. However, it is not advisable to use a salt bath heater as it is difficult to clean the salt solution when it is brought into the extrusion die. High-chromium steel (1Cr18Ni9Ti, Cr17Ni2, Cr9Si2, 4Cr13, etc.) has no oxidation problem before 800 ℃. Other steels start to oxidize at 200-400 ° C. Can be heated with or without vacuum