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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
6 M* y" a, O9 o1 s7 S+ R1 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。
! Z4 }( Z$ X) k1 r关键词：冲天炉；高韧性；球墨铸铁
9 u. i: @1 Y0 l: V/ ^0 p' g, T中图分类号：TG255 文献标识码：B 文章编号：1003—8345(2007)04—0026—03
4 S" o3 s+ U9 HProduction of As—-Cast High Toughness Nodular Iron Castings with Cupola M elting9 w# X k X6 p
KONG Fan-gang ，BI Jing—bing2，WANG Jun2,ZHANG Ji-xiang2
$ v2 n; s% K/ u4 j(1．Non—standard Equipments Manufacture Co．Ltd．，No．1 Inner Mongolia Machinery Group Co．，Baotou 014032，China；2．
# r" \$ d4 C" A, EShengquan Group Co．Ltd．，Ji’nan 250204，China)3 ` a0 R& v0 K) m$ c
Abstract： The QT 400-1 8 grade of as-cast high toughness nodular iron(with tensile strength≥400 Mpa．and elongation t>' w, V! P* J) ^( K( ~
8％)could be produced stably with cupola melting by adopting~llowing measures：optimizing chemical compositions，strictly8 Q: ]* n$ B2 F% @$ g `$ O: o
controlling every parameters of cupola melting including that the tuyere ratio was adopted as about 4％．the height of coke
) V1 K z1 ~. y# R9 b% [6 nbed 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
