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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5 p7 Y8 u0 A, c4 z
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。
F/ s* Y7 _2 X# e) \) f关键词：冲天炉；高韧性；球墨铸铁
, u+ [/ w2 r+ k+ B% b中图分类号：TG255 文献标识码：B 文章编号：1003—8345(2007)04—0026—03
) f4 s D# ~$ gProduction of As—-Cast High Toughness Nodular Iron Castings with Cupola M elting8 c8 E1 p. `8 ^4 m
KONG Fan-gang ，BI Jing—bing2，WANG Jun2,ZHANG Ji-xiang22 Z# Z8 J# V6 D4 U% ^2 K, f- r
(1．Non—standard Equipments Manufacture Co．Ltd．，No．1 Inner Mongolia Machinery Group Co．，Baotou 014032，China；2．* I4 A9 s; R; |
Shengquan Group Co．Ltd．，Ji’nan 250204，China)
% z; R' m- X {6 T" hAbstract： The QT 400-1 8 grade of as-cast high toughness nodular iron(with tensile strength≥400 Mpa．and elongation t>% |8 V4 r5 Z' Q4 g p" h
8％)could be produced stably with cupola melting by adopting~llowing measures：optimizing chemical compositions，strictly2 ]" T3 a; ?+ b
controlling every parameters of cupola melting including that the tuyere ratio was adopted as about 4％．the height of coke
" i9 ~% ]$ y$ U9 m' j: qbed 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
