搪瓷烧制工艺对330MPa级热轧搪瓷钢组织性能的影响

发布时间：2018-03-24 04:04

  本文选题：搪瓷钢　切入点：力学性能　出处：《材料保护》2016年S1期

【摘要】：在低碳钢基础上适当增加了C、Mn、S的含量,设计了330 MPa级热轧搪瓷钢。采用电阻炉模拟搪瓷烧制,研究了搪烧烧制温度及烧制时间对试验钢微观组织和性能的影响。研究发现:试验钢组织以铁素体为主,少量珠光体分布于晶界的三向交叉处。经模拟搪瓷烧制后,组织没有明显的变化,随搪瓷烧制时间的延长,铁素体晶粒尺寸成增大趋势,珠光体含量逐渐降低。模拟搪烧保温时间为较短的2 min时,钢板强度升高;随着保温时间的延长,试验钢的强度逐渐下降,塑性提高。860℃保温超过10 min和890℃保温超过5 min模拟搪瓷烧制后的试验钢屈服强度低于330 MPa,无法达到强度性能指标。试验钢的C、Mn、S含量均较高,氢渗透时间明显高于临界值,可达到抗鳞爆性能指标。
[Abstract]:On the basis of low carbon steel, the content of CfMnS was increased appropriately, and the 330#en0# grade hot-rolled enamel steel was designed. The effects of firing temperature and sintering time on microstructure and properties of the test steel were studied. It was found that the microstructure of the test steel was mainly ferrite and a small amount of pearlite was distributed at the three-way intersection of grain boundary. There was no obvious change in microstructure. With the prolongation of enamel sintering time, the grain size of ferrite increased, and the content of pearlite decreased gradually. When the simulated enamel holding time was shorter than 2 min, the strength of steel plate increased, and with the prolongation of heat preservation time, The strength of the test steel decreased gradually, and the yield strength of the test steel after heating at 860 鈩，

本文编号：1656608