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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
; D# H9 U& E4 z1 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。7 L, [7 v' I0 i$ a5 E! h* t
关键词：冲天炉；高韧性；球墨铸铁
$ f& ~* U, K& d1 o( u4 s( N$ |中图分类号：TG255 文献标识码：B 文章编号：1003—8345(2007)04—0026—03
+ l) i4 w2 `3 k6 x0 U! K" ~% hProduction of As—-Cast High Toughness Nodular Iron Castings with Cupola M elting
; u2 O, _; s' p" M0 j: cKONG Fan-gang ，BI Jing—bing2，WANG Jun2,ZHANG Ji-xiang20 C d* H' G) N* P0 `/ n
(1．Non—standard Equipments Manufacture Co．Ltd．，No．1 Inner Mongolia Machinery Group Co．，Baotou 014032，China；2．% [, Z! C; v! A/ i) [
Shengquan Group Co．Ltd．，Ji’nan 250204，China)0 k1 j2 U' Y' O5 D. n
Abstract： The QT 400-1 8 grade of as-cast high toughness nodular iron(with tensile strength≥400 Mpa．and elongation t>* e. D! m r+ ]
8％)could be produced stably with cupola melting by adopting~llowing measures：optimizing chemical compositions，strictly4 w2 V, c& Y9 B$ ^! ^
controlling every parameters of cupola melting including that the tuyere ratio was adopted as about 4％．the height of coke
9 k8 C7 G7 W9 W5 F) c- x! lbed 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
