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泰州沃盛特材 撫順HastelloyC276合金管全國走貨

　　哈(ha)(ha)氏(shi)(shi)合(he)(he)(he)金(jin)(jin)管(guan)(guan)的熱(re)處理技術 　　鉻元(yuan)素(su)(su)為(wei)(wei)(wei)(wei)此類(lei)(lei)材料(liao)具有(you)不(bu)(bu)銹之(zhi)(zhi)(zhi)(zhi)因(yin)素(su)(su)，以(yi)(yi)(yi)往發現鉻含(han)量(liang)必(bi)須具有(you)12%以(yi)(yi)(yi)上，才能形(xing)成(cheng)(cheng)密緻之(zhi)(zhi)(zhi)(zhi)表面氧化(hua)(hua)(hua)膜而(er)達到防蝕(shi)保(bao)護(hu)之(zhi)(zhi)(zhi)(zhi)作(zuo)用，故任何(he)哈(ha)(ha)氏(shi)(shi)合(he)(he)(he)金(jin)(jin)管(guan)(guan)之(zhi)(zhi)(zhi)(zhi)熱(re)處理必(bi)須考(kao)慮到對鉻之(zhi)(zhi)(zhi)(zhi)成(cheng)(cheng)份有(you)無造(zao)成(cheng)(cheng)任何(he)變化(hua)(hua)(hua)。 　　(1) 麻田(tian)散鐵類(lei)(lei)哈(ha)(ha)氏(shi)(shi)合(he)(he)(he)金(jin)(jin)管(guan)(guan)：此類(lei)(lei)哈(ha)(ha)氏(shi)(shi)合(he)(he)(he)金(jin)(jin)管(guan)(guan)為(wei)(wei)(wei)(wei)體(ti)心(xin)立方之(zhi)(zhi)(zhi)(zhi)結(jie)(jie)構(gou)(BCC)可(ke)(ke)(ke)(ke)為(wei)(wei)(wei)(wei)磁(ci)鐵吸(xi)引(yin)，其製成(cheng)(cheng)為(wei)(wei)(wei)(wei)從奧斯田(tian)溫(wen)度(du)(du)急冷(leng)而(er)得，此之(zhi)(zhi)(zhi)(zhi)耐(nai)蝕(shi)性(xing)為(wei)(wei)(wei)(wei)*好，但材質硬(ying)則脆，接(jie)著加(jia)以(yi)(yi)(yi)回火可(ke)(ke)(ke)(ke)以(yi)(yi)(yi)增加(jia)延展性(xing)，但耐(nai)蝕(shi)性(xing)會(hui)降(jiang)(jiang)低(di)，特(te)別(bie)是在攝(she)氏(shi)(shi)450度(du)(du)到650度(du)(du)之(zhi)(zhi)(zhi)(zhi)間回火，會(hui)使(shi)在結(jie)(jie)晶格(ge)間隙內之(zhi)(zhi)(zhi)(zhi)碳(tan)原子擴(kuo)(kuo)散析(xi)出(chu)(chu)與鉻形(xing)成(cheng)(cheng)網狀之(zhi)(zhi)(zhi)(zhi)碳(tan)化(hua)(hua)(hua)鉻造(zao)成(cheng)(cheng)臨近區(qu)(qu)域鉻元(yuan)素(su)(su)之(zhi)(zhi)(zhi)(zhi)消耗(hao)使(shi)鉻成(cheng)(cheng)份降(jiang)(jiang)低(di)，無法形(xing)成(cheng)(cheng)保(bao)護(hu)膜，而(er)喪失(shi)耐(nai)蝕(shi)性(xing)，故需特(te)別(bie)注(zhu)意。以(yi)(yi)(yi)下為(wei)(wei)(wei)(wei)各種麻田(tian)散鐵類(lei)(lei)哈(ha)(ha)氏(shi)(shi)合(he)(he)(he)金(jin)(jin)管(guan)(guan)材之(zhi)(zhi)(zhi)(zhi)熱(re)處理溫(wen)度(du)(du)。 　　(a)403， 410， 416se 之(zhi)(zhi)(zhi)(zhi)溫(wen)度(du)(du)為(wei)(wei)(wei)(wei)650-750℃。 　　(b)414之(zhi)(zhi)(zhi)(zhi)溫(wen)度(du)(du)為(wei)(wei)(wei)(wei)650-730℃。 　　(c)431之(zhi)(zhi)(zhi)(zhi)溫(wen)度(du)(du)為(wei)(wei)(wei)(wei)6.(d)440-A， 440-B， 440-C， 420之(zhi)(zhi)(zhi)(zhi)溫(wen)度(du)(du)為(wei)(wei)(wei)(wei)680-750℃。 　　(2) 肥粒鐵類(lei)(lei)哈(ha)(ha)氏(shi)(shi)合(he)(he)(he)金(jin)(jin)管(guan)(guan)：此種哈(ha)(ha)氏(shi)(shi)合(he)(he)(he)金(jin)(jin)管(guan)(guan)為(wei)(wei)(wei)(wei)體(ti)心(xin)立方結(jie)(jie)構(gou)(BCC)可(ke)(ke)(ke)(ke)為(wei)(wei)(wei)(wei)磁(ci)鐵吸(xi)引(yin)通常(chang)用在汽車工(gong)業(ye)(ye)或(huo)化(hua)(hua)(hua)學(xue)工(gong)業(ye)(ye)上，強度(du)(du)不(bu)(bu)會(hui)因(yin)熱(re)處理而(er)改變，但可(ke)(ke)(ke)(ke)以(yi)(yi)(yi)冷(leng)加(jia)工(gong)方式(shi)增加(jia)強度(du)(du)。 　　(3) 奧斯田(tian)鐵類(lei)(lei)哈(ha)(ha)氏(shi)(shi)合(he)(he)(he)金(jin)(jin)管(guan)(guan)：此種哈(ha)(ha)氏(shi)(shi)合(he)(he)(he)金(jin)(jin)管(guan)(guan)為(wei)(wei)(wei)(wei)面心(xin)立方結(jie)(jie)構(gou)(FCC)對磁(ci)鐵不(bu)(bu)起作(zuo)用，如前面所(suo)論此類(lei)(lei)材料(liao)易加(jia)工(gong)，故其加(jia)工(gong)后(hou)(hou)為(wei)(wei)(wei)(wei)材料(liao)之(zhi)(zhi)(zhi)(zhi)殘餘應力而(er)可(ke)(ke)(ke)(ke)施予不(bu)(bu)同之(zhi)(zhi)(zhi)(zhi)熱(re)處理。 　　(4) 析(xi)出(chu)(chu)硬(ying)化(hua)(hua)(hua)型(xing)哈(ha)(ha)氏(shi)(shi)合(he)(he)(he)金(jin)(jin)管(guan)(guan)：此種哈(ha)(ha)氏(shi)(shi)合(he)(he)(he)金(jin)(jin)管(guan)(guan)由(you)高(gao)溫(wen)淬火后(hou)(hou)在低(di)溫(wen)熱(re)處理，由(you)於材料(liao)中含(han)之(zhi)(zhi)(zhi)(zhi)鋁，或(huo)銅(tong)元(yuan)素(su)(su)析(xi)出(chu)(chu)沿著差排之(zhi)(zhi)(zhi)(zhi)滑面或(huo)晶界形(xing)成(cheng)(cheng)化(hua)(hua)(hua)合(he)(he)(he)物(inter-metallic compounds)而(er)可(ke)(ke)(ke)(ke)以(yi)(yi)(yi)提高(gao)其強度(du)(du)或(huo)硬(ying)度(du)(du)。常(chang)用之(zhi)(zhi)(zhi)(zhi)析(xi)出(chu)(chu)硬(ying)化(hua)(hua)(hua)型(xing)哈(ha)(ha)氏(shi)(shi)合(he)(he)(he)金(jin)(jin)管(guan)(guan)為(wei)(wei)(wei)(wei)17-4 PH，其他尚有(you)17-7 PH，PH15-7MO，AM-350，AM-355等。 　　(5) 各類(lei)(lei)哈(ha)(ha)氏(shi)(shi)合(he)(he)(he)金(jin)(jin)管(guan)(guan)焊接(jie)后(hou)(hou)熱(re)處理：哈(ha)(ha)氏(shi)(shi)合(he)(he)(he)金(jin)(jin)管(guan)(guan)內所(suo)含(han)之(zhi)(zhi)(zhi)(zhi)鉻元(yuan)素(su)(su)，經焊接(jie)之(zhi)(zhi)(zhi)(zhi)后(hou)(hou)，在高(gao)溫(wen)區(qu)(qu)域(熱(re)影響區(qu)(qu))往往會(hui)擴(kuo)(kuo)散析(xi)出(chu)(chu)與碳(tan)結(jie)(jie)合(he)(he)(he)成(cheng)(cheng)碳(tan)化(hua)(hua)(hua)鉻，而(er)造(zao)成(cheng)(cheng)局部之(zhi)(zhi)(zhi)(zhi)鉻成(cheng)(cheng)份減少(shao)，無法形(xing)成(cheng)(cheng)保(bao)護(hu)膜，而(er)穿孔等腐蝕(shi)情(qing)形(xing)經常(chang)在這些(xie)熱(re)影響區(qu)(qu)中發生，為(wei)(wei)(wei)(wei)補救這種情(qing)形(xing)業(ye)(ye)者經常(chang)在焊接(jie)完后(hou)(hou)，將物件以(yi)(yi)(yi)熱(re)處理，其作(zuo)用為(wei)(wei)(wei)(wei)使(shi)其他區(qu)(qu)域之(zhi)(zhi)(zhi)(zhi)鉻元(yuan)素(su)(su)擴(kuo)(kuo)散到此鉻缺少(shao)區(qu)(qu)域，以(yi)(yi)(yi)達到保(bao)護(hu)作(zuo)用。