基于合理热处理工艺的压铸模挡板耐磨性改善

丁旺; 范泽熙; 杨弋涛

doi:10.15980/j.tzzz.2021.12.023

应用·压力铸造 | 浏览量 : 0 下载量: 25 CSCD: 0

PDF
导出
分享
收藏
专辑

基于合理热处理工艺的压铸模挡板耐磨性改善
Improvement of Wear Resistance of Die Casting Mold Baffle Based on Reasonable Heat Treatment Process
2021年41卷第12期页码：1564-1568
纸质出版日期： 2021 ，
DOI： 10.15980/j.tzzz.2021.12.023

扫描看全文

丁旺, 范泽熙, 杨弋涛. 基于合理热处理工艺的压铸模挡板耐磨性改善[J]. 特种铸造及有色合金杂志, 2021,41(12):1564-1568.

Ding Wang, Fan Zexi, Yang Yitao. Improvement of Wear Resistance of Die Casting Mold Baffle Based on Reasonable Heat Treatment Process[J]. Special Casting & Nonferrous Alloys, 2021,41(12):1564-1568.
丁旺, 范泽熙, 杨弋涛. 基于合理热处理工艺的压铸模挡板耐磨性改善[J]. 特种铸造及有色合金杂志, 2021,41(12):1564-1568. DOI： 10.15980/j.tzzz.2021.12.023.

Ding Wang, Fan Zexi, Yang Yitao. Improvement of Wear Resistance of Die Casting Mold Baffle Based on Reasonable Heat Treatment Process[J]. Special Casting & Nonferrous Alloys, 2021,41(12):1564-1568. DOI： 10.15980/j.tzzz.2021.12.023.

摘要

在压铸模挡板钢供货态的基础上

对其进行1 100℃×2 h均匀化退火、在880℃×30 min后水淬及分别在200℃和250℃回火2 h

随后对其显微组织、宏观硬度、力学性能和耐磨性等进行测定。结果表明

经过淬回火后挡板钢的片状珠光体和网状铁素体组织转变为回火马氏体和少量残留奥氏体组织

且抗拉强度和硬度显著增加。淬火+200℃回火后

其耐磨性达到最佳

250℃回火次之

均优于供货态挡板钢耐磨性。

Abstract

Based on the experimental steel supplied by the die-casting mold baffle

it is subjected to homogenization annealing at 1 100 ℃ for 2 h

water quenching at 880 ℃ for 30 min

and tempering at 200 ℃ and 250 ℃ for 2 h

respectively

and then its microstructure

macroscopic hardness

mechanical properties and abrasion resistance were analyzed. The results show that after quenching and tempering

the flaky pearlite and reticulated ferrite structure in the experimental steel supplied by the mold is transformed into tempered martensite and a small amount of retained austenite

and the tensile strength and hardness are increased significantly. The wear resistance of the tool steel quenched and 200 ℃ tempering presents desirable

followed by 250 ℃ tempering

which is better than that of the mold supply state.