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硫不仅可以改善钢的切削加工性能,而且由于硫的自润滑作用,还能够提高钢的耐磨性和抗咬合性。试验研究证明,当钢表面含有一定量的硫时,可获得良好的耐磨性和抗咬合性。这就给以钢代铜,制造新型轴瓦带来了可能。 1.硫在钢中的存在形式及作用硫在钢中以FeS的形式存在。从图1Fe—FeS状态图中可以看出,FeS的熔点是1193℃,Fe和FeS组成的共晶体的熔点是985℃。在液态铁中,Fe和FeS可以无
Sulfur can not only improve the machinability of steel, but also improve the wear resistance and seizure resistance of the steel due to the self-lubricating effect of sulfur. Experimental studies have shown that when the steel surface contains a certain amount of sulfur, can obtain good wear resistance and seizure resistance. This gives the possibility of using steel instead of copper and making a new type of bearing bush. 1. Sulfur in the steel in the form and role of the existence of sulfur in the steel in the form of FeS. As can be seen from the Fig. 1Fe-FeS state diagram, the melting point of FeS is 1193 ° C, and the melting point of Fe and FeS co-crystals is 985 ° C. In liquid iron, Fe and FeS may be absent