從焊管技術發(fā)展看配置熱張力減徑機的必要性——兼論我國電焊管品種的發(fā)展思路
NECESSITY OF INCORPORATING HOT-STRETCH REDUCING MILL WITH TUBE WELDING PROCESS IN TERMS OF DEVELOPMENT OF WELDED TUBE TECHNOLOGY——ALSO ON DEVELOPMENT TREND OF DOMESTIC WELDED PIPE CATEGORY
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摘要: 以20世紀50年代中期為界,揭示了電阻焊管技術發(fā)展的歷程。50年代中期以前,電阻焊管除加熱采用電外,基本上沿襲連續(xù)爐焊管的生產工藝,并利用熱張力減徑設備以提高低頻焊接鋼管的焊縫質量,減少帶鋼的寬度供應規(guī)格,提高設備的生產能力。隨著高頻焊接技術引入焊管生產,如果仍采用熱張力減徑工藝,就會增加建設投資和經營費用,影響產品質量,也不可能對焊管做到"無縫化"。結合國外在這方面的一些研究成果,對"焊管無縫化"觀點進行了指正,提出了發(fā)展我國電阻焊管技術的見解。Abstract: The co-authors describe the history of development of ERW pipe technology with the mid-1950s as a milestone． Before the mid-50s， ERW pipes had been generally produced by means of the continuous furnace process with exception of electrical heating and of hot-stretch reducing mill process to improve quality of weld seam of the low-frequency welded pipe， lessen strip size number and increase productivity of the mill line． Along with the introduction of the hi-frequency welded pipe technique ，use of the said hot-stretch reducing process will increase construction investment and operation costs， damage product quality and fail to get welded pipes “Seamless”． Based on some research achievements made overseas and at home in this field， critcism of the point of view of the so called “Seamless welded tube” is made and proposals concerning developing domestic ERW pipe technologies are put forward．
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