中碳Cr、Mo滲氮軸承鋼的耐磨與疲勞性能研究
[Abstract]:In this paper, 32Cr3MoVE nitriding bearing steel melted by vacuum induction was used as the test material to study the change of microstructure and properties of the steel under different heat treatment systems and the action mechanism of alloy elements in the steel. The microstructure and hardness distribution of nitriding layer of 32Cr3MoVE steel were studied. The wear tests of point, line and surface contact were carried out on SRV-4 wear tester. The bending fatigue properties and rolling contact fatigue properties of the test steel were also studied. After quenching and tempering, the microstructure is tempered sorbite and dispersed carbides, the tensile strength is 1500 MPA, the yield strength is 1300 MPA, and the impact absorption work is 70J. By comparing with the chemical composition, microstructure and mechanical properties of 30Cr3WVE bearing steel, the effect of Mo and other alloy elements in the steel and the strength and toughness mechanism of the steel are analyzed. The surface hardness of the nitrided layer of 32Cr3Move bearing steel is 1000HVand the effective nitriding depth is 400 渭 m. The nitride layer is composed of compound layer and diffusion layer. A large number of VN particles are dispersed and distributed on the compound layer, and there is vein structure in the diffusion layer. The wear characteristics of nitride layer of 32Cr3MoVE bearing steel under different contact modes are related to loading load and reciprocating motion frequency. The wear mechanism is mainly abrasive wear and plastic peeling, and the non-metallic inclusions in the material have adverse effects on the wear resistance of the steel. The rotational bending fatigue ultimate strength of 32Cr3Move and 30Cr3WVE bearing steel at room temperature is 804MPA, 732MPa.32Cr3Move bearing steel is 947MPA after nitriding, and the ultimate strength of rotating bending fatigue of 143MPa.30Cr3WVE nitriding bearing steel is 850MPA and the increment is 118MPA. The surface defects and internal non-metallic inclusions are the main causes of fatigue failure, and the non-metallic inclusions are mainly Al,Mg,Ca oxides. The size and position of non-metallic inclusions in steel are closely related to fatigue ultimate strength. The rolling contact fatigue failure behavior of 32Cr3MoVE steel is studied. when the contact stress is 4.5 GPA, the rolling contact fatigue life of 32Cr3MoVE bearing steel reaches 3 脳 107, which has good contact fatigue properties. The morphology of contact fatigue failure is peeling pit, the depth of peeling pit is 84.6 渭 m, and the area is 0.48mm.
【學(xué)位授予單位】:河北科技大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類(lèi)號(hào)】:TG161;TG142.12
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 孫楓;賀瑞軍;江志華;王琳;佟小軍;韓勁;周舸;;航空發(fā)動(dòng)機(jī)構(gòu)件先進(jìn)熱處理技術(shù)[J];航空制造技術(shù);2016年20期
2 李昭昆;雷建中;徐海峰;俞峰;董瀚;曹文全;;國(guó)內(nèi)外軸承鋼的現(xiàn)狀與發(fā)展趨勢(shì)[J];鋼鐵研究學(xué)報(bào);2016年03期
3 王錫樵;孫清汝;候奎;鄒磊;龔海華;;真空熱處理的應(yīng)用[J];金屬加工(熱加工);2015年19期
4 王玉玲;惠英龍;姚翠翠;;齒輪激光淬火研究進(jìn)展[J];表面技術(shù);2014年05期
5 陳乃超;孫方宏;;Friction and Wear Performances of Hot Filament Chemical Vapor Deposition Multilayer Diamond Films Coated on Silicon Carbide Under Water Lubrication[J];Journal of Shanghai Jiaotong University(Science);2013年02期
6 鄭秋麟;佟向鵬;;氣相沉積技術(shù)在產(chǎn)品中的應(yīng)用及發(fā)展[J];航空精密制造技術(shù);2013年02期
7 王國(guó)榮;鐘林;楊昌海;陳林燕;;牙輪鉆頭軸承單元試件的摩擦磨損性能[J];潤(rùn)滑與密封;2013年03期
8 郭占斌;高松林;;油潤(rùn)滑條件下幾種金屬材料摩擦磨損規(guī)律研究[J];黑龍江八一農(nóng)墾大學(xué)學(xué)報(bào);2013年01期
9 張松;周磊;郝玉喜;張春華;王東生;王茂才;;Monel合金表面激光熔覆鎳基合金的組織及摩擦磨損性能[J];焊接學(xué)報(bào);2013年01期
10 陳龍;史朋飛;李正國(guó);邱明;夏新濤;;四點(diǎn)接觸球軸承摩擦力矩特性分析[J];軸承;2013年01期
相關(guān)博士學(xué)位論文 前2條
1 蔣波;盾構(gòu)機(jī)軸承套圈用鋼變形與熱處理組織性能研究[D];北京科技大學(xué);2016年
2 陳戰(zhàn);水潤(rùn)滑軸承的摩擦磨損性能及潤(rùn)滑機(jī)理的研究[D];重慶大學(xué);2003年
相關(guān)碩士學(xué)位論文 前7條
1 賴大春;高溫軸承鋼復(fù)合化學(xué)熱處理與疲勞性能的研究[D];昆明理工大學(xué);2016年
2 傅子建;全淬透性軸承鋼的熱處理韌化及表面硬化研究[D];安徽工業(yè)大學(xué);2016年
3 何愛(ài)貴;08F鋼的氮碳共滲及其微觀組織的研究[D];湖南大學(xué);2012年
4 王彥;東北特鋼集團(tuán)軸承鋼技術(shù)發(fā)展戰(zhàn)略研究[D];大連理工大學(xué);2011年
5 廖建雄;新型含鈮滲氮鋼的組織與性能研究[D];上海大學(xué);2011年
6 周超;潔凈度對(duì)38CrMoAl滲氮鋼力學(xué)性能的影響[D];武漢科技大學(xué);2010年
7 譚諄禮;金屬材料高能?chē)娡璞砻婕{米化研究[D];大連鐵道學(xué)院;2002年
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