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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" k. y2 `' A$ h2 e
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。
& ]8 P2 ~5 H# @8 Q9 O' ]- ^9 R关键词：冲天炉；高韧性；球墨铸铁. `" N4 r- V" ^/ N# I7 L6 @. I
中图分类号：TG255 文献标识码：B 文章编号：1003—8345(2007)04—0026—03* |, ^* _, ~- _$ e
Production of As—-Cast High Toughness Nodular Iron Castings with Cupola M elting \* ]: L G& o+ f1 z- T. c+ f/ p. p
KONG Fan-gang ，BI Jing—bing2，WANG Jun2,ZHANG Ji-xiang20 p" h5 o# x* |
(1．Non—standard Equipments Manufacture Co．Ltd．，No．1 Inner Mongolia Machinery Group Co．，Baotou 014032，China；2．
1 w: R* N4 k" {! I0 B KShengquan Group Co．Ltd．，Ji’nan 250204，China)
+ h/ j; P- k) J# C# f! L6 FAbstract： The QT 400-1 8 grade of as-cast high toughness nodular iron(with tensile strength≥400 Mpa．and elongation t>
9 I& C; { p0 I! V8％)could be produced stably with cupola melting by adopting~llowing measures：optimizing chemical compositions，strictly- O$ j# n! z" J5 Y6 _- S
controlling every parameters of cupola melting including that the tuyere ratio was adopted as about 4％．the height of coke
# V, P- [- i1 ]2 w/ Obed 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
