在(zai)(zai)使用(yong)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)甩帶爐(lu)(lu)(lu)的(de)時(shi)候,也會(hui)面臨有(you)些熱(re)(re)處(chu)(chu)理(li)工藝(yi)在(zai)(zai)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)上(shang)(shang)(shang)無(wu)法完成的(de)問題,究(jiu)其(qi)原因,大致(zhi)有(you)兩個方面:一是真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)生產廠(chang)家按(an)照(zhao)標準生產,雖然各(ge)項技(ji)術參數(shu)合格,但在(zai)(zai)生產的(de)過程中沒有(you)***系統(tong)地(di)去考慮熱(re)(re)處(chu)(chu)理(li)工藝(yi)問題,導致(zhi)了(le)爐(lu)(lu)(lu)子的(de)參數(shu)和(he)熱(re)(re)處(chu)(chu)理(li)工藝(yi)參數(shu)不(bu)(bu)匹配。二是真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)熱(re)(re)處(chu)(chu)理(li)工藝(yi)過程存在(zai)(zai)缺陷,無(wu)法實現(xian)想(xiang)要(yao)的(de)結果。
所以(yi)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)甩帶爐(lu)(lu)(lu)的(de)一個關鍵問題,就(jiu)是要(yao)有(you)可靠的(de)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)密封(feng)構(gou)造(zao)(zao)。為(wei)了(le)保證真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)的(de)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)性能,爐(lu)(lu)(lu)體(ti)要(yao)采(cai)用(yong)氣密焊接,同時(shi)在(zai)(zai)爐(lu)(lu)(lu)體(ti)上(shang)(shang)(shang)盡量少(shao)開或者(zhe)不(bu)(bu)開孔,少(shao)采(cai)用(yong)或者(zhe)避免采(cai)用(yong)動密封(feng)結構(gou),以(yi)盡量減少(shao)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泄露的(de)機遇。安裝在(zai)(zai)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)體(ti)上(shang)(shang)(shang)的(de)部件(jian)、附件(jian)等如水冷電(dian)極、熱(re)(re)電(dian)偶導出裝置(zhi)也都必須設(she)計(ji)密封(feng)構(gou)造(zao)(zao)。
工作(zuo)(zuo)者(zhe)對(dui)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)甩帶爐(lu)(lu)(lu)做到(dao)更好的(de)維護(hu)與保養,方法如下:
1、按(an)照(zhao)程序(xu)抽(chou)低真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong):緊閉所有(you)的(de)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)閥門,啟(qi)動機械泵,待其(qi)運行正(zheng)常(chang)后(hou)(大約1-2 min),打開通向爐(lu)(lu)(lu)體(ti)的(de)低真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)閥即上(shang)(shang)(shang)碟閥,預(yu)先對(dui)爐(lu)(lu)(lu)體(ti)抽(chou)低真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong);
2、打開真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)甩帶爐(lu)(lu)(lu)下碟閥,對(dui)擴散泵進(jin)行抽(chou)氣,當真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)度(du)達到(dao)15 Pa以(yi)下后(hou),系統(tong)自動開啟(qi)擴散泵進(jin)行預(yu)熱(re)(re),一般經過45 min左右擴散泵開始其(qi)作(zuo)(zuo)用(yong),就(jiu)可以(yi)關閉真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)燒(shao)結爐(lu)(lu)(lu)上(shang)(shang)(shang)碟閥,同時(shi)開啟(qi)主阻(zu)擋閥待真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)度(du)達到(dao)1.33×10Pa以(yi)上(shang)(shang)(shang),才可以(yi)開啟(qi)加(jia)熱(re)(re)按(an)鈕(niu)對(dui)樣品進(jin)行加(jia)熱(re)(re)。