TP321不銹鋼無(wú)縫鋼管晶間腐蝕問(wèn)題研究

Research on Intergranular Corrosion of TP321 Seamless Stainless Steel Pipe

摘要: 對(duì)影響TP321不銹鋼無(wú)縫鋼管耐晶間腐蝕性能的因素進(jìn)行分析，從化學(xué)成分、金相組織、工藝流程、熱處理制度等方面研究可能導(dǎo)致耐蝕性降低的原因，并采取措施消除不利影響。通過(guò)控制化學(xué)成分、調(diào)整熱處理制度以及優(yōu)化脫脂工藝等一系列改進(jìn)措施，使TP321不銹鋼無(wú)縫鋼管晶間腐蝕試驗(yàn)一次合格率穩(wěn)定在95%以上水平。

Abstract: Analyzed here in the article are the factors affecting intergranular corrosion resistance of the TP321 seamless stainless steel pipe, involving such aspects as chemical composition, metallographic structure, process flow, heat treatment schedule, etc.Accordingly, relevant actions are taken to eliminate the negative effects.Thanks to implementation of improvement actions like chemical composition control, adjusting heat treatment schedule, and optimizing the degreasing process, etc., the primary qualification rate of intergranular corrosion test to the TP321 seamless steel pipes has been kept at the level above 95%.