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据了解,国内生产电动葫芦的工厂对圆环链均采用渗碳淬火处理。山海关起重设备厂生产的0.5吨和0.25吨电动葫芦的圆环链也是采用渗碳淬火的,材料为20Mn2,尺寸见图1,渗层深要求0.15~0.25毫米,硬度HRC 46~52。我们认为这种热处理工艺值得磋商,为此,我们做了些试验。
It is understood that the domestic production of electric hoist factory chain ring are carburizing quenching. Shanhaiguan Lifting Equipment Factory production of 0.5 tons and 0.25 tons of electric hoist ring chain is also carburizing and quenching, the material is 20Mn2, the size shown in Figure 1, the depth of 0.15 ~ 0.25 mm, hardness HRC 46 ~ 52. We think this kind of heat treatment process is worth discussing, for which we have done some experiments.