40X是低合金高强度钢,在淬火及回火后,能得到100公斤/毫米~2的抗拉强度,并且具有比較滿意的塑性。由于这种钢含有比較多的碳量,及铬量因而在一般焊接过程,易于在焊縫中出現气孔和淬火裂紋。过去我厂的40X摩擦环,是經过水压机压成的圓块,这样既浪费材料又浪费工时。因此,我們决定采用焊接結构,将摩 40X is low alloy high strength steel, after quenching and tempering, can get 100 kg / mm ~ 2 tensile strength, and has more satisfactory plasticity. Because of this steel contains more carbon, and chromium in the general welding process, easy to appear in the weld porosity and quenching cracks. In the past I plant 40X friction ring, is pressed into a round by the hydraulic press, so that waste of materials and waste of working hours. Therefore, we decided to adopt a welded structure that would rub