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鍍鋅(xin)(xin)鋼(gang)管(guan)(guan)熱(re)(re)(re)(re)(re)處理(li)(li)的(de)(de)(de)十個要(yao)(yao)點： 一(yi)、鍍鋅(xin)(xin)管(guan)(guan)及(ji)夾(jia)具在(zai)(zai)熱(re)(re)(re)(re)(re)處理(li)(li)前均應(ying)油污、殘鹽、油漆等外來物； 二(er)、首(shou)次(ci)在(zai)(zai)真空爐中(zhong)使用的(de)(de)(de)夾(jia)具，應(ying)預(yu)(yu)先在(zai)(zai)不(bu)(bu)低于(yu)工(gong)(gong)(gong)件(jian)(jian)(jian)(jian)所要(yao)(yao)求的(de)(de)(de)真空度(du)下進(jin)(jin)(jin)(jin)行(xing)(xing)除(chu)氣凈化(hua)處理(li)(li)； 三、在(zai)(zai)熱(re)(re)(re)(re)(re)處理(li)(li)過(guo)程中(zhong)易變(bian)(bian)形(xing)的(de)(de)(de)工(gong)(gong)(gong)件(jian)(jian)(jian)(jian)，應(ying)在(zai)(zai)專用夾(jia)具上(shang)進(jin)(jin)(jin)(jin)行(xing)(xing)加(jia)(jia)熱(re)(re)(re)(re)(re)。預(yu)(yu)熱(re)(re)(re)(re)(re)的(de)(de)(de)方(fang)(fang)法有(you)：一(yi)次(ci)預(yu)(yu)熱(re)(re)(re)(re)(re)為800℃，二(er)次(ci)預(yu)(yu)熱(re)(re)(re)(re)(re)為500-550℃和(he)(he)850℃，一(yi)次(ci)預(yu)(yu)熱(re)(re)(re)(re)(re)升溫(wen)(wen)度(du)速度(du)應(ying)有(you)限制； 四、對于(yu)形(xing)狀(zhuang)復(fu)雜或截面(mian)有(you)急劇變(bian)(bian)化(hua)以及(ji)有(you)效厚度(du)較大的(de)(de)(de)工(gong)(gong)(gong)件(jian)(jian)(jian)(jian)，應(ying)該(gai)進(jin)(jin)(jin)(jin)行(xing)(xing)預(yu)(yu)熱(re)(re)(re)(re)(re)； 五、有(you)凹槽不(bu)(bu)通孔的(de)(de)(de)工(gong)(gong)(gong)件(jian)(jian)(jian)(jian)、鑄(zhu)件(jian)(jian)(jian)(jian)和(he)(he)焊接(jie)件(jian)(jian)(jian)(jian)以及(ji)加(jia)(jia)工(gong)(gong)(gong)成形(xing)的(de)(de)(de)不(bu)(bu)銹(xiu)鋼(gang)工(gong)(gong)(gong)件(jian)(jian)(jian)(jian)，一(yi)般(ban)不(bu)(bu)宜在(zai)(zai)鹽浴爐中(zhong)進(jin)(jin)(jin)(jin)行(xing)(xing)加(jia)(jia)熱(re)(re)(re)(re)(re)； 六(liu)、根據(ju)工(gong)(gong)(gong)件(jian)(jian)(jian)(jian)有(you)效厚度(du)和(he)(he)條件(jian)(jian)(jian)(jian)厚度(du)(實際厚度(du)乘以工(gong)(gong)(gong)件(jian)(jian)(jian)(jian)形(xing)狀(zhuang)系數)，鍍鋅(xin)(xin)管(guan)(guan)加(jia)(jia)熱(re)(re)(re)(re)(re)應(ying)有(you)足夠的(de)(de)(de)保溫(wen)(wen)時間(jian)(jian)； 七(qi)、馬氏體不(bu)(bu)銹(xiu)鋼(gang)和(he)(he)耐熱(re)(re)(re)(re)(re)鋼(gang)鍍鋅(xin)(xin)管(guan)(guan)淬(cui)(cui)(cui)火(huo)冷(leng)至室溫(wen)(wen)后方(fang)(fang)可(ke)進(jin)(jin)(jin)(jin)行(xing)(xing)清洗(xi)(xi)、深冷(leng)處理(li)(li)或回(hui)(hui)火(huo)，焊接(jie)和(he)(he)其(qi)后的(de)(de)(de)熱(re)(re)(re)(re)(re)處理(li)(li)之間(jian)(jian)的(de)(de)(de)時間(jian)(jian)間(jian)(jian)隔不(bu)(bu)應(ying)超過(guo)4個小時； 八、根據(ju)鍍鋅(xin)(xin)管(guan)(guan)的(de)(de)(de)要(yao)(yao)求和(he)(he)表面(mian)狀(zhuang)況采用堿洗(xi)(xi)、水(shui)溶(rong)(rong)性清洗(xi)(xi)劑(ji)、氯溶(rong)(rong)劑(ji)噴(pen)砂、噴(pen)丸等方(fang)(fang)法進(jin)(jin)(jin)(jin)行(xing)(xing)清理(li)(li)； 九(jiu)、矯正后應(ying)在(zai)(zai)低于(yu)原回(hui)(hui)火(huo)溫(wen)(wen)度(du)下進(jin)(jin)(jin)(jin)行(xing)(xing)去應(ying)力退火(huo)，形(xing)狀(zhuang)復(fu)雜或尺寸要(yao)(yao)求嚴格工(gong)(gong)(gong)件(jian)(jian)(jian)(jian)，矯正后在(zai)(zai)回(hui)(hui)火(huo)時用定形(xing)夾(jia)具結合(he)回(hui)(hui)火(huo)進(jin)(jin)(jin)(jin)行(xing)(xing)矯正； 十、當鍍鋅(xin)(xin)管(guan)(guan)力學性能不(bu)(bu)合(he)格時，可(ke)進(jin)(jin)(jin)(jin)行(xing)(xing)重復(fu)的(de)(de)(de)熱(re)(re)(re)(re)(re)處理(li)(li)，但重復(fu)淬(cui)(cui)(cui)火(huo)或固溶(rong)(rong)次(ci)數一(yi)般(ban)不(bu)(bu)超過(guo)兩次(ci)。鍍鋅(xin)(xin)管(guan)(guan)的(de)(de)(de)補(bu)充回(hui)(hui)火(huo)不(bu)(bu)算作(zuo)重復(fu)處理(li)(li)。淬(cui)(cui)(cui)火(huo)狀(zhuang)態或低溫(wen)(wen)回(hui)(hui)火(huo)后的(de)(de)(de)馬氏體不(bu)(bu)銹(xiu)鋼(gang)和(he)(he)耐熱(re)(re)(re)(re)(re)鋼(gang)工(gong)(gong)(gong)件(jian)(jian)(jian)(jian)，在(zai)(zai)重復(fu)淬(cui)(cui)(cui)火(huo)前應(ying)進(jin)(jin)(jin)(jin)行(xing)(xing)預(yu)(yu)熱(re)(re)(re)(re)(re)，退火(huo)或高溫(wen)(wen)回(hui)(hui)火(huo)。