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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 _% ]2 }# r/ n e7 m1 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。
0 X1 Z7 ~9 b0 V5 t; N关键词：冲天炉；高韧性；球墨铸铁8 y6 K' M& z3 R- j1 ^3 g( W; ]
中图分类号：TG255 文献标识码：B 文章编号：1003—8345(2007)04—0026—03
" S( }; ~( Z u9 lProduction of As—-Cast High Toughness Nodular Iron Castings with Cupola M elting
: Q$ v; J( y5 O# f! G* A3 ?KONG Fan-gang ，BI Jing—bing2，WANG Jun2,ZHANG Ji-xiang2
8 S0 o1 s) ?2 H: u: e(1．Non—standard Equipments Manufacture Co．Ltd．，No．1 Inner Mongolia Machinery Group Co．，Baotou 014032，China；2．
. P8 Y* r M& V3 ~0 NShengquan Group Co．Ltd．，Ji’nan 250204，China)" F" o6 s( c5 L0 ?( }4 D
Abstract： The QT 400-1 8 grade of as-cast high toughness nodular iron(with tensile strength≥400 Mpa．and elongation t>" B0 W1 }' Y" {. T! V4 H
8％)could be produced stably with cupola melting by adopting~llowing measures：optimizing chemical compositions，strictly i8 A* H7 B) u- ~
controlling every parameters of cupola melting including that the tuyere ratio was adopted as about 4％．the height of coke
0 S2 o, ?) e- E- fbed 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
