淬火冷卻介質(zhì)對(duì)40CrNiMo鋼礦用鏈輪軸調(diào)質(zhì)后組織與力學(xué)性能的影響

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摘要：采用力學(xué)性能測(cè)試及顯微組織觀察等手段，研究淬火介質(zhì)對(duì)40CrNiMo鋼礦用鏈輪軸調(diào)質(zhì)后組織與力學(xué)性能的影響，發(fā)現(xiàn)油淬后回火樣品的金相組織為致密、均勻的回火索氏體，具有較高的強(qiáng)硬度和較好的塑韌性。研究結(jié)果可為礦用鏈輪軸熱處理工藝設(shè)計(jì)提供理論依據(jù)，對(duì)指導(dǎo)實(shí)際生產(chǎn)具有參考價(jià)值。

關(guān)鍵詞：40CrNiMo鋼；礦用鏈輪軸；淬火冷卻介質(zhì)；力學(xué)性能

Quenching and cooling medium on the structure of 40CrNiMo steel mining sprocket shafts after quenching and tempering the impact on mechanical properties

SU Zhenning1， 2， MA Kun1， 2， WANG Zhiying1， 2

1. Middling Coal Zhangjiakou Coal Mining Machinery Co.， Ltd.， Zhangjiakou 076025， Hebei， China

2. Hebei Province High End Intelligent Mining Equipment Technology Innovation Center， Zhangjiakou 076025， Hebei， China

Abstract： By using mechanical property testing and microstructure observation， the effect of quenching medium on the microstructure and mechanical properties of 40CrNiMo steel mining sprocket shaft after quenching and tempering was studied. It was found that the metallographic structure of the tempered sample after oil quenching was dense and uniform tempered martensite， with high strength， hardness， and good plasticity and toughness. The research results can provide theoretical basis for the design of heat treatment process for mining sprocket shafts and have reference value for guiding actual production.

Keywords： 40CrNiMo steel; mining sprocket shaft; quenching cooling medium; mechanical property

1 序言

刮板輸送機(jī)是煤礦井下綜采工作面中的輸送設(shè)備，主要作用是將采煤機(jī)采下的煤炭連續(xù)不斷地運(yùn)出工作面。（剩余5932字）