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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
0 H$ i& L: y# q5 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。
( J6 Q& q! l( O j关键词：冲天炉；高韧性；球墨铸铁# `) V/ z7 R4 i/ V% I3 o
中图分类号：TG255 文献标识码：B 文章编号：1003—8345(2007)04—0026—03
/ J; Q: i) C: S3 K8 t, a6 ]+ fProduction of As—-Cast High Toughness Nodular Iron Castings with Cupola M elting
2 L5 E$ r; f, r4 D7 L! E# aKONG Fan-gang ，BI Jing—bing2，WANG Jun2,ZHANG Ji-xiang26 v) i3 R3 q0 |# Z
(1．Non—standard Equipments Manufacture Co．Ltd．，No．1 Inner Mongolia Machinery Group Co．，Baotou 014032，China；2．
/ y. T( z& ~: Q" v* d; xShengquan Group Co．Ltd．，Ji’nan 250204，China)" V1 X3 l; E9 D6 N: x$ V/ N5 W! [
Abstract： The QT 400-1 8 grade of as-cast high toughness nodular iron(with tensile strength≥400 Mpa．and elongation t>! |9 t1 `$ z; `/ B8 f3 F" m' s
8％)could be produced stably with cupola melting by adopting~llowing measures：optimizing chemical compositions，strictly
" d) k* F. R! L. ~+ n' Lcontrolling every parameters of cupola melting including that the tuyere ratio was adopted as about 4％．the height of coke
5 ?) N- S5 |. }0 Hbed 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
