CAJ | 학술논문

针对矿井摩擦提升机高速恶性滑动工况，以准确获得摩擦提升机摩擦衬垫的热-应力场为目的，选用常用摩擦衬垫G为研究对象，在热机械分析仪（ZRPY-300）上开展研究，分析了不同压力（0～10 N）和温升速率（1～5℃/min）对摩擦衬垫线膨胀系数的影响规律。研究结果表明：在一定压力和温升速率下，随着温度的升高，衬垫线膨胀系数逐渐增加，当温度升至120℃时，曲线发生转折并呈现逐渐减小的趋势；当达到195℃左右时，曲线发生第2次转折，出现了再次增加的现象；在温升速率一定时，压力越大，对其曲线变化的影响越明显；当压力一定时，温升速率的变化对其曲线的影响较为复杂。最后，通过多元回归的拟合，得到线膨胀系数、温升速率及压力间的定量关系，可为高性能衬垫的研究提供一定的基础数据。
침대광정마찰제승궤고속악성활동공황，이준학획득마찰제승궤마찰츤점적열-응력장위목적，선용상용마찰츤점G위연구대상，재열궤계분석의（ZRPY-300）상개전연구，분석료불동압력（0～10 N）화온승속솔（1～5℃/min）대마찰츤점선팽창계수적영향규률。연구결과표명：재일정압력화온승속솔하，수착온도적승고，츤점선팽창계수축점증가，당온도승지120℃시，곡선발생전절병정현축점감소적추세；당체도195℃좌우시，곡선발생제2차전절，출현료재차증가적현상；재온승속솔일정시，압력월대，대기곡선변화적영향월명현；당압력일정시，온승속솔적변화대기곡선적영향교위복잡。최후，통과다원회귀적의합，득도선팽창계수、온승속솔급압력간적정량관계，가위고성능츤점적연구제공일정적기출수거。
In view of the serious high speed slide of a mining friction hoist ,aiming at calculating the lining's thermo-stress accurately ,the most commonly used lining G was studied on thermal mechanical analyzer(ZRPY-300) ,and the effect of load(0-10 N) and heating rate(1-5 ℃/min) on coefficient of linear expansion were analyzed .Experimental results show that the coefficient of linear expansion increases with the temperature increasing under the certain load and heating rate ,and w hen the temperature reaches to 120 ℃ ,the curve occurres transition and then decrea-ses gradually .When the temperature reaches to 195 ℃ ,the curve occurres the second transition and then increases again .The coefficient of linear expansion is obviously with the load increasing under a certain heating rate ,and the coefficient of linear expansion is complexity with the heating rate increasing under a certain load .Finally the fitting equation is obtained by the multiple re-gression analysis .Based on this study ,the experiment results can supply the basic data for the design of high-performance lining .