Φ89 mm以下不銹鋼無(wú)縫鋼管管坯的經(jīng)濟(jì)型生產(chǎn)工藝
An Economic Manufacturing Process for Stainless Steel Blank Pipes Sized under Φ89 mm
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摘要: 針對(duì)Φ89 mm以下300系列奧氏體不銹鋼無(wú)縫鋼管冷加工生產(chǎn)流程長(zhǎng)、生產(chǎn)周期長(zhǎng)、產(chǎn)量低、成材率低、成本高以及酸洗污染等問(wèn)題，通過(guò)變形工藝研究，設(shè)計(jì)開(kāi)發(fā)出“熱軋（穿孔+定徑）+在線水冷”工藝，以生產(chǎn)Φ89 mm以下不銹鋼無(wú)縫鋼管坯料。檢驗(yàn)結(jié)果表明：采用“熱軋（穿孔+定徑）+在線水冷”工藝生產(chǎn)的Φ89 mm以下不銹鋼無(wú)縫鋼管坯料規(guī)格接近最終冷軋成品尺寸，可減少中間冷軋（拔）道次，簡(jiǎn)化工藝流程，縮短生產(chǎn)周期，提高成材率，具有良好的經(jīng)濟(jì)性。Abstract: A number of shortcomings stay with the production of the cold-processed 300 Series austenitic stainless steel pipes as sized under Φ89 mm，namely，rather long manufacturing process flow and production cycle，low output，low yield，high operational costs and environment-contaminating pickling operation，etc.Addressing such problems，based on study on the deformation process，the process of hot rolling（piercing+sizing）plus in-line water cooling is designed and developed to produce seamless stainless steel blank pipes sized under Φ89 mm.Results from inspections of and tests to the pipes as made with the above mentioned process show that their dimensions are close to the finished cold-rolled pipes.It is concluded that the said manufacturing process is capable of reducing intermediate cold-rolling（drawing）passes，simplifying the process flow，shortening the production cycle，and increasing the yield，being remarkably economic.
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