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自冷式磁粉制动器在卷纸生产中的应用


 国产(chan)(chan)卷筒纸胶印机(ji)给纸机(ji)张力控(kong)制(zhi)(zhi)(zhi)人都(dou)采(cai)用(yong)水(shui)冷式磁(ci)(ci)(ci)(ci)(ci)磁(ci)(ci)(ci)(ci)(ci)粉(fen)制(zhi)(zhi)(zhi)动(dong)(dong)器(qi)。这种制(zhi)(zhi)(zhi)动(dong)(dong)器(qi)工(gong)作(zuo)(zuo)(zuo)时能(neng)输出较大(da)的制(zhi)(zhi)(zhi)动(dong)(dong)力矩和(he)(he)滑差功(gong)率,因此被(bei)广(guang)泛采(cai)用(yong)。但是(shi),由(you)于(yu)磁(ci)(ci)(ci)(ci)(ci)粉(fen)制(zhi)(zhi)(zhi)动(dong)(dong)器(qi)内部有水(shui)循环(huan)(huan)系统用(yong)焊(han)接或热压封(feng)闭水(shui)道,因加工(gong)精度和(he)(he)焊(han)接质(zhi)毚造(zao)成(cheng)的漏(lou)水(shui)问题屡屡发生,导致(zhi)磁(ci)(ci)(ci)(ci)(ci)粉(fen)粘接、线圈烧坏不(bu)能(neng)使用(yong)。另外(wai),还需要配备一套外(wai)部水(shui)循环(huan)(huan)系统,以(yi)(yi)保(bao)证(zheng)(zheng)磁(ci)(ci)(ci)(ci)(ci)粉(fen)制(zhi)(zhi)(zhi)动(dong)(dong)器(qi)工(gong)作(zuo)(zuo)(zuo)时产(chan)(chan)生的热量(liang)与水(shui)交换并(bing)带出散发掉。操作(zuo)(zuo)(zuo)上(shang)还需要时刻注意(yi),开机(ji)时应先开水(shui)泵冷却电机(ji),以(yi)(yi)保(bao)证(zheng)(zheng)磁(ci)(ci)(ci)(ci)(ci)粉(fen)制(zhi)(zhi)(zhi)动(dong)(dong)器(qi)正常运转(zhuan)。显(xian)然,没有水(shui)循环(huan)(huan)的磁(ci)(ci)(ci)(ci)(ci)粉(fen)制(zhi)(zhi)(zhi)动(dong)(dong)器(qi),在操作(zuo)(zuo)(zuo)和(he)(he)使用(yong)上(shang)是(shi)比较方便的。但是(shi),由(you)于(yu)磁(ci)(ci)(ci)(ci)(ci)粉(fen)制(zhi)(zhi)(zhi)动(dong)(dong)器(qi)工(gong)作(zuo)(zuo)(zuo)时,磁(ci)(ci)(ci)(ci)(ci)粉(fen)在磁(ci)(ci)(ci)(ci)(ci)场作(zuo)(zuo)(zuo)用(yong)下,磁(ci)(ci)(ci)(ci)(ci)粉(fen)链不(bu)断(duan)形成(cheng)、又被(bei)不(bu)断(duan)拉断(duan)所产(chan)(chan)生的热量(liang)以(yi)(yi)及磁(ci)(ci)(ci)(ci)(ci)粉(fen)和(he)(he)转(zhuan)子、定子的摩擦产(chan)(chan)生的热量(liang),仅靠外(wai)壳散发比较闲难。有磁(ci)(ci)(ci)(ci)(ci)粉(fen)制(zhi)(zhi)(zhi)动(dong)(dong)器(qi)生产(chan)(chan)厂家设(she)计(ji)制(zhi)(zhi)(zhi)造(zao)出带散热片的磁(ci)(ci)(ci)(ci)(ci)粉(fen)制(zhi)(zhi)(zhi)动(dong)(dong)器(qi),使热量(liang)容易散掉。

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