24小时热门版块排行榜

>论坛更新日志 (3517)
>导师招生 (298)
>休闲灌水 (140)
>招聘信息布告栏 (131)
>论文道贺祈福 (110)
>硕博家园 (78)
>虫友互识 (49)
>文献求助 (42)
>找工作 (41)
>考研 (40)
>生物科学 (29)
>博后之家 (25)
>考博 (21)
>医学 (18)
>基金申请 (17)
>教师之家 (14)

返回列表

当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖

毛福祥

银虫 (正式写手)

应助: 18 (小学生)
金币: 2762.1
散金: 139
红花: 7
帖子: 400
在线: 210小时
虫号: 2099951
注册: 2012-11-01
性别: GG
专业: 冶金化工与冶金反应工程学

[求助] 下面两句话中的master heat怎么解释啊，我是没辙了已有2人参与

The master heat in  accordance  with  this  specification shall  be
produced  by  vacuum  melting process 。

A  master heat  is  defined  as  a  single  furnace  charge  that  has been  melted  and  refined.

回复此楼

» 猜你喜欢

1楼 2014-09-09 22:53:03

已阅回复此楼关注TA 给TA发消息送TA红花 TA的回帖

jiaoh1957

木虫 (初入文坛)

应助: 1 (幼儿园)
金币: 1690
帖子: 39
在线: 130.6小时
虫号: 3675298
注册: 2015-02-03
专业: 金属材料的微观结构

偶见你的问题，master heat、sub-heat的定义如下，希望对你有帮助。
master heat, n—a quantity of metal processed in a single furnace or reﬁning vessel at one time in such a manner as to produce the desired composition and properties. Master heats may be used directly for producing castings or converted into ingot, bar, shot, or other suitable form, not including gates and risers from casting production, for later remelting as a sub-heat.

sub-heat, n—a portion of a master heat remelted without additional processing for pouring into castings. Synonyms: melt, production heat. Sub-heats shall be produced from master heat metal in suitable batch sizes by electric induction furnace with or without atmosphere protection such as vacuum or inert gas.