真空甩帶爐的結構有哪些
真空甩(shuai)帶爐的結構(gou)有哪些
真空甩帶爐采用耐熱鋼制(zhi)造的真(zhen)空(kong)(kong)(kong)(kong)(kong)罐(guan)放(fang)入電阻爐(lu)中,根據真(zhen)空(kong)(kong)(kong)(kong)(kong)熱處(chu)理(li)工(gong)藝的需要,配接(jie)適當的真(zhen)空(kong)(kong)(kong)(kong)(kong)系統,即成為筒單(dan)的真(zhen)空(kong)(kong)(kong)(kong)(kong)熱處(chu)理(li)爐(lu)。是由電阻爐(lu),真(zhen)空(kong)(kong)(kong)(kong)(kong)罐(guan)硬(ying)和真(zhen)空(kong)(kong)(kong)(kong)(kong)泵真(zhen)空(kong)(kong)(kong)(kong)(kong)悶門、真(zhen)空(kong)(kong)(kong)(kong)(kong)計(ji)等(deng)構(gou)成的真(zhen)空(kong)(kong)(kong)(kong)(kong)系統。其熱源在(zai)真(zhen)空(kong)(kong)(kong)(kong)(kong)的外(wai)部,也就是電熱元件設置在(zai)真(zhen)空(kong)(kong)(kong)(kong)(kong)罐(guan)的外(wai)部,工(gong)件放(fang)在(zai)真(zhen)空(kong)(kong)(kong)(kong)(kong)罐(guan)的內(nei)部,靠間接(jie)加熱。以下是燒結(jie)爐(lu)的幾種(zhong)結(jie)構(gou):

1.鐘罩式結構
這種結(jie)構的(de)真(zhen)空(kong)缺(que)座落在爐(lu)(lu)底(di)上,整個爐(lu)(lu)底(di)和真(zhen)空(kong)罐可以(yi)借助(zhu)于電動(dong)(dong)或液(ye)壓傳動(dong)(dong)升(sheng)降(jiang),以(yi)完成(cheng)裝(zhuang)出(chu)料操(cao)作(zuo)并能縮短(duan)冷卻時(shi)間。也可以(yi)采取真(zhen)空(kong)罐和爐(lu)(lu)底(di)固定(ding)不動(dong)(dong),罩式爐(lu)(lu)體(ti)升(sheng)降(jiang)的(de)方法(fa)來完成(cheng)進出(chu)料操(cao)作(zuo)等,但(dan)是爐(lu)(lu)體(ti)升(sheng)降(jiang)較(jiao)為復雜。真(zhen)空(kong)甩帶(dai)爐(lu)(lu)廠家建議采用哪(na)一(yi)種方法(fa),要(yao)根據現場實(shi)際情況(kuang)而定(ding)。
2.雙真空結構
這種結構不僅真(zhen)空罐(guan)內(nei)部(bu)被抽成(cheng)(cheng)真(zhen)空,而且(qie)真(zhen)空罐(guan)外部(bu)的(de)(de)爐體部(bu)分也(ye)被抽成(cheng)(cheng)真(zhen)空。這樣,就可(ke)以減少真(zhen)空鑲(xiang)承受(shou)的(de)(de)壓力,避免真(zhen)空罐(guan)外壁氧化和變形(xing),延長了(le)真(zhen)空罐(guan)的(de)(de)使用壽命。
在(zai)使(shi)用時還要(yao)注意(yi),真(zhen)空罐(guan)是真(zhen)空甩帶爐的關鍵性部件(jian)。由于真(zhen)空罐(guan)須在(zai)高(gao)溫和一(yi)個大(da)氣壓(ya)(ya)的外壓(ya)(ya)條(tiao)件(jian)下工作,所以,真(zhen)空罐(guan)的材料應具備良好的熱穩定性和耐氧化性,間(jian)接性能要(yao)好,焊縫不(bu)易產生氣孔、開裂,保證高(gao)溫氣密性。材料成分中的元(yuan)素(su)蒸氣壓(ya)(ya)要(yao)低(di),防止合金元(yuan)素(su)在(zai)高(gao)溫、高(gao)真(zhen)空下揮(hui)發。
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