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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- t# o7 a# s5 \! p4 T$ Q" y7 U8 v) `
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。) l; |# ~' f& G/ e* ^& V
关键词：冲天炉；高韧性；球墨铸铁7 l+ [$ q" N% s( C
中图分类号：TG255 文献标识码：B 文章编号：1003—8345(2007)04—0026—037 s0 V, |% O# f" k' A% G9 s" u
Production of As—-Cast High Toughness Nodular Iron Castings with Cupola M elting
' A6 o: f' W7 r6 L* v1 v. ?4 ~KONG Fan-gang ，BI Jing—bing2，WANG Jun2,ZHANG Ji-xiang2! B, b2 T( Q N! I
(1．Non—standard Equipments Manufacture Co．Ltd．，No．1 Inner Mongolia Machinery Group Co．，Baotou 014032，China；2．
" I, x1 Y$ p* g* s2 SShengquan Group Co．Ltd．，Ji’nan 250204，China)
8 a; [( D% ~. V) c% L5 f K LAbstract： The QT 400-1 8 grade of as-cast high toughness nodular iron(with tensile strength≥400 Mpa．and elongation t>
) q) [ U# a/ E1 K% J8％)could be produced stably with cupola melting by adopting~llowing measures：optimizing chemical compositions，strictly
$ L C) D) j+ Xcontrolling every parameters of cupola melting including that the tuyere ratio was adopted as about 4％．the height of coke5 N6 {- f. d% \! s
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
