单选题
本菲尔特法是（）的脱碳工艺。
发布日期：2020-12-11
二甲胺基乙醇
As2O3
二乙醇胺为助催化剂的热钾碱法
氨基乙酸
试题解析
脱碳
脱碳是指钢的含碳量减少的现象称为脱碳。钢的加热温度过高或在高温下停留时间过长时易发生脱碳。有时还伴有严重的表面氧化。出现全脱碳层时组织中已无珠光体存在。仅有部分脱碳层时还保留一部分珠光体。碳钢及低合金钢在临氢高温状态下氢使钢中的Fe3C还原生成甲烷，也使珠光体脱碳，亦称氢腐蚀。脱碳后的钢材强度下降并软化。
- 中文名
- 脱碳
- 方法
- 物理吸收法
- 外文名
- decarbonization
- 释义
- 钢加热时表面碳含量降低的现象
工艺
工艺（ technology、craft）是指劳动者利用各类生产工具对各种原材料、半成品进行加工或处理，最终使之成为成品的方法与过程。制定工艺的原则是：技术上的先进和经济上的合理。由于不同的工厂的设备生产能力、精度以及工人熟练程度等因素都大不相同，所以对于同一种产品而言，不同的工厂制定的工艺可能是不同的；甚至同一个工厂在不同的时期做的工艺也可能不同。可见，就某一产品而言，工艺并不是唯一的，而且没有好坏之分。这种不确定性和不唯一性，和现代工业的其他元素有较大的不同。内画、玉雕等都是是中国特有的一种工艺形式。
- 中文名
- 工艺
- 地位
- 物质文明
- 工艺设计
- 产品方案，原料、燃料
- 外文名
- technology
- 种类
- 基本工艺 改性工艺 后期处理
- 意义
- 将材料加工成成品
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