工艺参数对钢基铸渗复合层质量的影响

任艳艳; 李鹏鹏; 邓小君; 李晓东; 金宁宁; 张国赏

doi:10.15980/j.tzzz.2014.08.003

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工艺参数对钢基铸渗复合层质量的影响
Influence of Process Parameters on the Quality of Cast-Infiltration Composite Layer
2014年34卷第8期页码：871-873
纸质出版日期： 2014 ，
DOI： 10.15980/j.tzzz.2014.08.003

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[1]任艳艳,李鹏鹏,邓小君,李晓东,金宁宁,张国赏.工艺参数对钢基铸渗复合层质量的影响[J].特种铸造及有色合金,2014,34(08):871-873.

Ren Yanyan, Li Pengpeng, Deng Xiaojun, et al. Influence of Process Parameters on the Quality of Cast-Infiltration Composite Layer[J]. Special Casting & Nonferrous Alloys, 2014,34(8):871-873.
[1]任艳艳,李鹏鹏,邓小君,李晓东,金宁宁,张国赏.工艺参数对钢基铸渗复合层质量的影响[J].特种铸造及有色合金,2014,34(08):871-873. DOI： 10.15980/j.tzzz.2014.08.003.

Ren Yanyan, Li Pengpeng, Deng Xiaojun, et al. Influence of Process Parameters on the Quality of Cast-Infiltration Composite Layer[J]. Special Casting & Nonferrous Alloys, 2014,34(8):871-873. DOI： 10.15980/j.tzzz.2014.08.003.

摘要

以ZG310-570为基体、高碳铬铁粉末为铸渗剂

采用铸渗工艺并结合Al热反应制备了钢基表面铸渗复合材料

研究了浇注温度、预制块放置位置、粘结剂等因素对铸渗层形成的影响。结果表明

钢水浇注温度为1 650℃时

预制块与钢水完全反应渗透

实现了预制块与基体间的冶金结合

增强相为M7C3、Cr7C、Al2O3等;预制块以半嵌入式置于型腔内壁时

易制备出金属基铸渗复合层;预制块中不加粘结剂所得铸渗复合层品质最好。

Abstract

Using carbon steel（0.45%C）as matrix

and high carbon ferrochrome as cast-infiltration agent

the steel-based surface composites were fabricated by conventional cast-infiltration process combined with the thermite reaction.Influences of various processing parameters such as pouring temperature

the placement location

the content of aluminum and the binder on formation of cast-infiltration layers were investigated.The results show that the interfacial bonding belongs to metallurgical fusion between cast-infiltration layer and the matrix

and the cast-infiltration composites mainly consist of M7C3

Cr7C3

Al2O3

when the pouring temperature is 1 650℃.The high-quality cast-infiltration composite layer can be prepared with the preforms embedded in the lower part of the mold wall.The desirable surface quality of cast-infiltration layer can be obtained without any binder.