本文選題：搪瓷鋼　切入點(diǎn)：力學(xué)性能　出處：《材料保護(hù)》2016年S1期

【摘要】：在低碳鋼基礎(chǔ)上適當(dāng)增加了C、Mn、S的含量,設(shè)計(jì)了330 MPa級熱軋?zhí)麓射�。采用電阻爐模擬搪瓷燒制,研究了搪燒燒制溫度及燒制時(shí)間對試驗(yàn)鋼微觀組織和性能的影響。研究發(fā)現(xiàn):試驗(yàn)鋼組織以鐵素體為主,少量珠光體分布于晶界的三向交叉處。經(jīng)模擬搪瓷燒制后,組織沒有明顯的變化,隨搪瓷燒制時(shí)間的延長,鐵素體晶粒尺寸成增大趨勢,珠光體含量逐漸降低。模擬搪燒保溫時(shí)間為較短的2 min時(shí),鋼板強(qiáng)度升高;隨著保溫時(shí)間的延長,試驗(yàn)鋼的強(qiáng)度逐漸下降,塑性提高。860℃保溫超過10 min和890℃保溫超過5 min模擬搪瓷燒制后的試驗(yàn)鋼屈服強(qiáng)度低于330 MPa,無法達(dá)到強(qiáng)度性能指標(biāo)。試驗(yàn)鋼的C、Mn、S含量均較高,氫滲透時(shí)間明顯高于臨界值,可達(dá)到抗鱗爆性能指標(biāo)。
[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，

本文編號：1656608