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摘要：通过合理地选择化学成分，严格控制3 t／h冲天炉的各项熔炼工艺参数，即选择风口比为4％左右、底焦高度为. b& F) I# Y8 E( f+ m b
1 500～1 600 mm，铁焦比为8：1，送风强度90～120 m3／m·min，稳定地生产出铸态高韧性QT400—18铸件。
" `. b4 P% m5 V4 f' e4 |# X关键词：冲天炉；高韧性；球墨铸铁 N' p6 j l$ X, r
中图分类号：TG255 文献标识码：B 文章编号：1003—8345(2007)04—0026—03, L5 ~: C6 l% L
Production of As—-Cast High Toughness Nodular Iron Castings with Cupola M elting
! q/ s( J( g3 l2 O# M# S. `! P. k% kKONG Fan-gang ，BI Jing—bing2，WANG Jun2,ZHANG Ji-xiang2
) U' G/ _0 ]! [* W(1．Non—standard Equipments Manufacture Co．Ltd．，No．1 Inner Mongolia Machinery Group Co．，Baotou 014032，China；2．
$ J/ S2 m- k0 e- g4 L9 E' n" r, nShengquan Group Co．Ltd．，Ji’nan 250204，China)) j! B4 O3 G0 u& B5 k3 P
Abstract： The QT 400-1 8 grade of as-cast high toughness nodular iron(with tensile strength≥400 Mpa．and elongation t>
/ N& ~& y3 f3 A8 R- n, e7 k q8％)could be produced stably with cupola melting by adopting~llowing measures：optimizing chemical compositions，strictly
0 U9 B* G& T% g& Tcontrolling every parameters of cupola melting including that the tuyere ratio was adopted as about 4％．the height of coke5 q. C- ^2 T+ e8 G/ h* S6 \
bed was of 1 500-1 600 mm．the iron coke ratio was of 8：1．and the blast intensity was of 90-1 2 |
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发表于 2009-3-1 14:15:17
