Method for manufacturing steel wire rod for pipe line steel submerged arc welding wire
A technology of submerged arc welding wire and production method, applied in the field of pipeline steel, can solve the problems of high labor intensity, inability to produce, difficult to control the internal quality of molten steel quality continuous casting billet, etc. Effect
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[0015] The present invention can be implemented in the iron and steel complex, adopting the example of the present invention to produce H08SG steel.
[0016] The process route is: hot metal desulfurization and slag removal → 80t converter smelting → slag blocking and tapping → ladle deoxidation alloying → LF ladle refining → feeding Si-Ca line → ladle bottom blowing argon soft blowing → 130mm 2 Billet casting machine → billet surface quality inspection → heating → high-speed wire rolling mill rolling ∮ 5.5-6.5mm wire rod → delayed cooling → finished product packaging.
[0017] The main process parameters of converter smelting are as follows
[0018] Stoves
Converter end temperature
degree(℃)
converter end point
C, (%)
Si-Al-Ba added
(kg / t) 7D08640 1697 .04 2.5 7D08641 1686 .04 2.5 7E08516 1685 .03 2.5 7E08517 1684 .04 2.5 7E08519 1694 .04 2.5 7E08520 1684 .04 2.5
[0019] The main proce...
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Abstract
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