抽沙船在軸承鋼中，如果出現(xiàn)嚴(yán)重的碳化物分布不均勻，則在熱處理加工過程中就容易造成組織和硬度的不均勻，鋼的組織不均勻性對(duì)接觸疲勞強(qiáng)度有較大的影響。
另外，嚴(yán)重的碳化物不均勻性還容易使軸承零件在淬火冷卻時(shí)產(chǎn)生裂紋，抽沙船碳化物不均勻性還會(huì)導(dǎo)致軸承的壽命降低因此，在軸承材料標(biāo)準(zhǔn)中，對(duì)不同規(guī)格的鋼材均有明確的特別要求。抽沙船對(duì)軸承鋼而言，表面缺陷包括裂紋、夾渣、毛刺、結(jié)疤、氧化皮等，內(nèi)部缺陷包括縮孔、氣泡、白點(diǎn)、嚴(yán)重的疏松和偏析等。
這些缺陷對(duì)于軸承的加工、軸承的性能和壽命有很大的影響，抽沙船在軸承材料標(biāo)準(zhǔn)中明確規(guī)定不允許出現(xiàn)這些缺陷。
Pumping sand in bearing steel, if appear serious non homogeneous distribution of the carbide, in thermal processing process is easy to cause the uneven microstructure and hardness, the uneven microstructure of on the contact fatigue strength has great influence.
另外，嚴(yán)重的碳化物不均勻性還容易使軸承零件在淬火冷卻時(shí)產(chǎn)生裂紋，抽沙船碳化物不均勻性還會(huì)導(dǎo)致軸承的壽命降低因此，在軸承材料標(biāo)準(zhǔn)中，對(duì)不同規(guī)格的鋼材均有明確的特別要求。抽沙船對(duì)軸承鋼而言，表面缺陷包括裂紋、夾渣、毛刺、結(jié)疤、氧化皮等，內(nèi)部缺陷包括縮孔、氣泡、白點(diǎn)、嚴(yán)重的疏松和偏析等。
Also serious carbides is easy to make bearing parts in the quenching crack, pumping sand carbide inhomogeneous will lead to reduce bearing life is therefore, in the standard of bearing materials and of different specifications of steel are both clear special requirements. Pumping sand for bearing steel, surface defects include cracks, slag, burrs, scarring, skin oxidation clips, and other, internal defects including shrinkage hole, bubble, white, serious porosity and segregation.
這些缺陷對(duì)于軸承的加工、軸承的性能和壽命有很大的影響，抽沙船在軸承材料標(biāo)準(zhǔn)中明確規(guī)定不允許出現(xiàn)這些缺陷。
These defects for the performance and service life of bearing processing, bearing has great influence, pumping sand in the bearing material standards clearly defined these defects are not allowed. |
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