摘要
采用手持式等离子熔覆设备,在煤矿用刮板输送机中部槽表面熔覆高硼Fe-Cr合金层,并对其进行磨损试验。结果表明：熔覆层主要由γ-（Fe,N i）、（Cr,Fe）2B、Fe2B和Fe23（C,B）6等物相组成;随着含硼量由2.5%逐步增加至5.5%,熔覆层的硬度和耐磨性呈先增大后降低趋势;含硼量为4.5%时,熔覆层的相对耐磨性是基材的5.4倍。井下试验表明,熔覆后中部槽使用寿命可延长2~3倍。
The handy plasma coating equipment was applied to the high boron Fe-Cr alloy coating on the intermediate pan of the mine scraper conveyor and an abrasive test was conducted on the coating.The results showed that the costing was mainly consisted with γ-（Fe,Ni）,（Cr,Fe）2B,Fe2B,Fe23（C,B）6 and other phases.With the boron content increased steadily from 2.5% to 5.5%,the hardness and abradability of the coating would be increased and then decreased.When the boron content was 4.5%,the relative abradability of the coating would be 5.4 times higher than the basic material.The underground test showed that the service life of the intermediate pan with the coating would be increased by 2~3 times.
出处
《煤炭科学技术》
CAS
北大核心
2011年第6期52-54,共3页
Coal Science and Technology
关键词
等离子熔覆
显微组织
耐磨性
刮板输送机中部槽
使用寿命
plasma coating
micro system
abrasiveability
scraper conveyor intermediate pan
service life
