The quality of resistance spot welding of low carbon steel and high strength low alloy steel is studied by looking into the dynamic voltage characteristics of the electrodes.
本文通过对电阻点焊电极电压动态特性的分析，研究了低碳钢及低合金高强度钢电阻点焊的质量问题。
2
The results show that K40S alloy possesses high low cycle fatigue resistance in comparison with X-40 alloy.
结果表明：与传统X-40合金相比，K40S合金具有优异的抗高温低周疲劳性能；
3
A kind of new M-B low-alloy wear resistance steel with high strength has been studied to overcome the deficiency of traditional high-manganese steel used in making grippad.