發(fā)布時(shí)間：2018-05-30 10:24

  本文選題：滲碳淬火 + 齒軌輪　； 參考：《西安科技大學(xué)》2016年碩士論文

【摘要】：目前國內(nèi)煤礦井下機(jī)械化開采遇到的復(fù)雜采煤層(大坡度、全巖等)問題越來越多,對于采煤機(jī)行走機(jī)構(gòu)的可靠性要求也越來越高,齒軌輪作為行走機(jī)構(gòu)的關(guān)鍵零部件,對其抗疲勞和抗磨損性能要求也越來越高。在齒輪制造過程中,要獲得良好的耐磨性和疲勞強(qiáng)度,滲碳淬火是關(guān)鍵因素之一。因此控制滲碳齒輪的質(zhì)量和對齒輪滲碳的工藝進(jìn)行改性研究對提高齒輪的使用性能有重要意義。本文針對采煤機(jī)行走機(jī)構(gòu)上齒軌輪的滲碳淬火工藝進(jìn)行研究分析,選用材料為電渣重熔鋼18Cr2Ni4WA,運(yùn)用DEFORM分析軟件對影響齒軌輪滲碳層深度的因素進(jìn)行仿真模擬,采用正交實(shí)驗(yàn)方法對其進(jìn)行分析,得出滲碳時(shí)間和滲碳溫度是影響滲碳層深度的主要因素;為了提高齒軌輪的滲碳層深度,采用多次強(qiáng)滲擴(kuò)散滲碳工藝并與常規(guī)的一次強(qiáng)滲擴(kuò)散工藝進(jìn)行對比分析,仿真和實(shí)際試驗(yàn)都共同驗(yàn)證了選用方案的可行性。同時(shí)運(yùn)用DEFORM軟件以及實(shí)際試驗(yàn)共同驗(yàn)證分析了優(yōu)化齒軌輪碳化物等級的方案,并對齒軌輪的不同位置碳濃度曲線進(jìn)行分析研究,為磨削工藝方案的制定提供支持。仿真模擬了滲碳工藝對齒軌輪組織、殘余應(yīng)力和變形的影響規(guī)律,以及不同淬火溫度對齒軌輪殘余應(yīng)力、變形和使用性能的影響。以上研究分析對控制齒軌輪滲碳質(zhì)量及提升齒軌輪性能都有一定的指導(dǎo)意義。
[Abstract]:At present, there are more and more problems of complex coal seam (large slope, whole rock, etc.) in mechanized mining of underground coal mine in our country, and the reliability requirement of walking mechanism of coal mining machine is more and more high, and the gear rail wheel is the key part of walking mechanism. The requirements for fatigue resistance and wear resistance are becoming higher and higher. Carburizing quenching is one of the key factors to obtain good wear resistance and fatigue strength in gear manufacturing. Therefore, it is important to control the quality of Carburizing gear and to improve the performance of gear by modifying the technology of Carburizing. In this paper, the Carburizing and quenching process of the upper gear rail wheel of the walking mechanism of the shearer is studied and analyzed. The factors affecting the depth of the Carburizing layer of the gear rail wheel are simulated by using DEFORM software and the material is selected as the material of the electroslag remelting steel 18Cr2Ni4WA. The orthogonal test method was used to analyze the carburizing process. The results show that the carburizing time and temperature are the main factors affecting the depth of the carburized layer, and in order to improve the depth of the carburized layer of the gear rail wheel, The method of multiple strong diffusion Carburizing is adopted and compared with the conventional primary diffusion process. The feasibility of the scheme is verified by both simulation and practical test. At the same time, the DEFORM software and the actual test are used to verify and analyze the scheme of optimizing the carbide grade of the gear rail wheel, and the carbon concentration curve at different positions of the gear rail wheel is analyzed and studied, which provides the support for the formulation of grinding technology scheme. The effects of Carburizing process on the structure, residual stress and deformation of the gear rail wheel, and the effects of different quenching temperatures on the residual stress, deformation and performance of the gear rail wheel are simulated and simulated. The above research and analysis have certain guiding significance for controlling the Carburizing quality of the gear rail wheel and improving the performance of the gear rail wheel.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TG162.73

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王延忠;陳云龍;張祖智;陳燕燕;劉e，

本文編號：1954955