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真空甩帶爐的5大優點
發布時間:2021-06-24   瀏覽:6863次

  真(zhen)空(kong)甩(shuai)帶爐的5大(da)優(you)點

  真空甩帶爐主(zhu)要用于燒(shao)結活性和(he)不(bu)溶性金(jin)屬、硬質合金(jin)、磁(ci)性材料和(he)不(bu)銹鋼。實(shi)際上是低壓(減(jian)壓)燒(shao)結。真空度越高,與中性大氣的距離越近,材料發生的化學反應就越少。主(zhu)要優點有以下幾點:

真空甩帶爐的5大優點

  (1)真空有利于吸附氣體的去除(chu),對燒結(jie)后期(qi)的收縮有明(ming)顯的促進作用。

  (2)采用真空甩帶爐(lu)有(you)利于去除硅、鋁、鎂、鈣及(ji)其氧化物等雜質,起到凈(jing)化材(cai)料的作(zuo)用。

  (3)真(zhen)空可以提(ti)高液(ye)相燒(shao)結的潤濕(shi)性,有利于(yu)燒(shao)結過程中的收縮,改善合金的組織。

  (4)真空(kong)是一(yi)種(zhong)理想(xiang)的(de)惰(duo)性(xing)氣體。當其它(ta)一(yi)次或惰(duo)性(xing)氣體不(bu)合適,或材(cai)料容(rong)易脫碳和(he)滲碳時,可采(cai)用真空(kong)甩(shuai)帶(dai)爐。

  (5)減少大氣中有害成分(fen)(水、氧、氮等)對產(chan)品的(de)污染。例(li)如(ru),將(jiang)電(dian)解氫中的(de)含水量降低到(dao)-40℃是(shi)困難的(de),而(er)在(zai)真空甩帶(dai)爐中,只要在(zai)幾百帕的(de)范圍內,真空含量就相當于-40℃的(de)***。

  真空(kong)燒(shao)(shao)結爐(lu)保溫時間越(yue)(yue)(yue)長(chang),粘結金屬(shu)的揮發(fa)損失越(yue)(yue)(yue)大。因此(ci),化(hua)學雜質、水(shui)和其他材(cai)料(liao)與材(cai)料(liao)中(zhong)(zhong)的碳(tan)(tan)發(fa)生(sheng)反應,導致一氧(yang)化(hua)碳(tan)(tan)與爐(lu)內排放(fang)。此(ci)時,爐(lu)壓明顯升高,合金中(zhong)(zhong)總(zong)碳(tan)(tan)含(han)(han)量(liang)降(jiang)低。顯然,碳(tan)(tan)含(han)(han)量(liang)的變(bian)化(hua)取決于原(yuan)料(liao)粉(fen)末中(zhong)(zhong)的氧(yang)含(han)(han)量(liang)和燒(shao)(shao)結過程中(zhong)(zhong)的真空(kong)度。二者越(yue)(yue)(yue)高,產生(sheng)一氧(yang)化(hua)碳(tan)(tan)的反應越(yue)(yue)(yue)容易,脫碳(tan)(tan)越(yue)(yue)(yue)嚴重。

  真空燒(shao)結與(yu)氣(qi)體保護燒(shao)結在(zai)真空甩帶爐中(zhong)沒有根本區別,但(dan)燒(shao)結溫度較(jiao)低,一般可降(jiang)低100~150℃,有利于延長燒(shao)結爐壽命(ming),降(jiang)低電能消耗。

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真空熔煉爐的使用要求與范圍

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真空熔煉爐的結構特點有哪些

真空熔煉爐的結構特點有哪些

  真(zhen)(zhen)(zhen)空(kong)熔(rong)煉(lian)(lian)(lian)(lian)爐(lu)(lu)的(de)(de)結構特(te)(te)點(dian)有哪(na)些(xie)  真(zhen)(zhen)(zhen)空(kong)熔(rong)煉(lian)(lian)(lian)(lian)爐(lu)(lu)是一種(zhong)用(yong)于(yu)熔(rong)化金屬、合金和(he)(he)陶瓷材料(liao)(liao)的(de)(de)設(she)(she)備(bei),其結構特(te)(te)點(dian)如下:  1.熔(rong)煉(lian)(lian)(lian)(lian)室:真(zhen)(zhen)(zhen)空(kong)熔(rong)煉(lian)(lian)(lian)(lian)爐(lu)(lu)的(de)(de)核心部分為熔(rong)煉(lian)(lian)(lian)(lian)室,通常由耐高溫的(de)(de)材料(liao)(liao)制成,例(li)如鉬(mu)、鎢等(deng)(deng)。熔(rong)煉(lian)(lian)(lian)(lian)室內設(she)(she)有電加熱器、感應線(xian)圈等(deng)(deng)加熱裝(zhuang)置。  2.真(zhen)(zhen)(zhen)空(kong)系(xi)(xi)(xi)統:真(zhen)(zhen)(zhen)空(kong)熔(rong)煉(lian)(lian)(lian)(lian)爐(lu)(lu)需(xu)要在(zai)(zai)低壓(真(zhen)(zhen)(zhen)空(kong))環(huan)境中(zhong)操(cao)(cao)(cao)作(zuo)(zuo),因此需(xu)要設(she)(she)置真(zhen)(zhen)(zhen)空(kong)系(xi)(xi)(xi)統。真(zhen)(zhen)(zhen)空(kong)系(xi)(xi)(xi)統包(bao)括真(zhen)(zhen)(zhen)空(kong)泵、氣體(ti)凈化器、儀表控制系(xi)(xi)(xi)統等(deng)(deng)。  3.加料(liao)(liao)裝(zhuang)置:真(zhen)(zhen)(zhen)空(kong)熔(rong)煉(lian)(lian)(lian)(lian)爐(lu)(lu)中(zhong)還設(she)(she)有加料(liao)(liao)裝(zhuang)置,可(ke)以將所需(xu)材料(liao)(liao)投入到爐(lu)(lu)內進(jin)行熔(rong)煉(lian)(lian)(lian)(lian)操(cao)(cao)(cao)作(zuo)(zuo)。  4.操(cao)(cao)(cao)作(zuo)(zuo)系(xi)(xi)(xi)統:真(zhen)(zhen)(zhen)空(kong)熔(rong)煉(lian)(lian)(lian)(lian)爐(lu)(lu)的(de)(de)操(cao)(cao)(cao)作(zuo)(zuo)系(xi)(xi)(xi)統通常使用(yong)計算(suan)機或PLC控制系(xi)(xi)(xi)統,可(ke)以實(shi)現自動化控制和(he)(he)數據(ju)采(cai)集。  5.安全(quan)保(bao)(bao)(bao)護(hu)(hu)系(xi)(xi)(xi)統:真(zhen)(zhen)(zhen)空(kong)熔(rong)煉(lian)(lian)(lian)(lian)爐(lu)(lu)還配備(bei)了(le)安全(quan)保(bao)(bao)(bao)護(hu)(hu)系(xi)(xi)(xi)統,例(li)如過(guo)熱保(bao)(bao)(bao)護(hu)(hu)、漏(lou)電保(bao)(bao)(bao)護(hu)(hu)等(deng)(deng),并(bing)通過(guo)聲光報警等(deng)(deng)方式提示操(cao)(cao)(cao)作(zuo)(zuo)人員。  總之,真(zhen)(zhen)(zhen)空(kong)熔(rong)煉(lian)(lian)(lian)(lian)爐(lu)(lu)的(de)(de)結構特(te)(te)點(dian)包(bao)括熔(rong)煉(lian)(lian)(lian)(lian)室、真(zhen)(zhen)(zhen)空(kong)系(xi)(xi)(xi)統、加料(liao)(liao)裝(zhuang)置、操(cao)(cao)(cao)作(zuo)(zuo)系(xi)(xi)(xi)統和(he)(he)安全(quan)保(bao)(bao)(bao)護(hu)(hu)系(xi)(xi)(xi)統等(deng)(deng)部件。在(zai)(zai)使用(yong)前,應該了(le)解設(she)(she)備(bei)的(de)(de)結構和(he)(he)性能,并(bing)嚴格按(an)照操(cao)(cao)(cao)作(zuo)(zuo)規程進(jin)行操(cao)(cao)(cao)作(zuo)(zuo),以確保(bao)(bao)(bao)安全(quan)和(he)(he)工(gong)作(zuo)(zuo)效率。