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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" j+ U/ O I$ K
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。* s" X4 n5 A" h, s1 D& w# r
关键词：冲天炉；高韧性；球墨铸铁% Z2 e s5 C8 F9 X" p/ @. e: D. ^
中图分类号：TG255 文献标识码：B 文章编号：1003—8345(2007)04—0026—03: A! t1 e* l9 B V, z
Production of As—-Cast High Toughness Nodular Iron Castings with Cupola M elting; K; T |7 x- h* G; i) F
KONG Fan-gang ，BI Jing—bing2，WANG Jun2,ZHANG Ji-xiang2
, }# J% n! f9 a: h% b# }1 R(1．Non—standard Equipments Manufacture Co．Ltd．，No．1 Inner Mongolia Machinery Group Co．，Baotou 014032，China；2．
: u. `' y0 ^* _. w4 x- D, v& S) NShengquan Group Co．Ltd．，Ji’nan 250204，China)5 {- U* e9 ~9 F; W
Abstract： The QT 400-1 8 grade of as-cast high toughness nodular iron(with tensile strength≥400 Mpa．and elongation t># V# h* o r a( f" t
8％)could be produced stably with cupola melting by adopting~llowing measures：optimizing chemical compositions，strictly
" M. L5 m( g1 N( b' pcontrolling every parameters of cupola melting including that the tuyere ratio was adopted as about 4％．the height of coke
; W3 e/ f7 i! X! Y& K2 ^7 P, ubed 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
