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天(Tian)津(Jin)龙(Long)科(Ke)基(Ji)机(Ji)械(Xie)设(She)备(Bei)有(You)限(Xian)公(Gong)司(Si)
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机(Ji)械(Xie)加(Jia)工(Gong)工(Gong)艺(Yi)当(Dang)前(Qian)位(Wei)置(Zhi)：(?)首(Shou)页(Ye)>机(Ji)械(Xie)加(Jia)工(Gong)工(Gong)艺(Yi)
天(Tian)津(Jin)龙(Long)科(Ke)基(Ji)机(Ji)械(Xie)设(She)备(Bei)有(You)限(Xian)公(Gong)司(Si)介(Jie)绍(Shao)焊(Han)条(Tiao)熔(Rong)化(Hua)的(De)过(Guo)程(Cheng)
(?) (?)焊(Han)条(Tiao)熔(Rong)化(Hua)形(Xing)成(Cheng)熔(Rong)滴(Di)，(?)由(You)焊(Han)条(Tiao)顶(Ding)端(Duan)滴(Di)入(Ru)熔(Rong)池(Chi)，(?)而(?)且(Qie)熔(Rong)化(Hua)金(Jin)属(Shu)基(Ji)本(Ben)上(Shang)暴(Bao)露(Lu)在(Zai)空(Kong)气(Qi)中(Zhong)，(?)这(Zhe)使(Shi)得(De)金(Jin)属(Shu)熔(Rong)滴(Di)与(Yu)气(Qi)体(Ti)、(?)熔(Rong)渣(Zha)的(De)接(Jie)触(Chu)面(Mian)大(Da)大(Da)超(Chao)过(Guo)一(Yi)般(Ban)的(De)炼(Lian)钢(Gang)过(Guo)程(Cheng)。(?)接(Jie)触(Chu)面(Mian)加(Jia)大(Da)可(Ke)以(Yi)加(Jia)速(Su)冶(Ye)金(Jin)反(Fan)应(Ying)进(Jin)行(Xing)，(?)但(Dan)同(Tong)时(Shi)，(?)气(Qi)体(Ti)侵(Qin)入(Ru)液(Ye)体(Ti)金(Jin)属(Shu)的(De)机(Ji)会(Hui)也(Ye)增(Zeng)多(Duo)，(?)因(Yin)而(?)使(Shi)焊(Han)缝(Feng)金(Jin)属(Shu)易(Yi)发(Fa)生(Sheng)氧(Yang)化(Hua)、(?)氮(Dan)化(Hua)以(Yi)及(Ji)产(Chan)生(Sheng)气(Qi)孔(Kong)。(?)此(Ci)外(Wai)，(?)熔(Rong)他(Ta)中(Zhong)心(Xin)和(He)边(Bian)缘(Yuan)很(Hen)大(Da)的(De)温(Wen)度(Du)梯(Ti)度(Du)还(Huan)使(Shi)焊(Han)缝(Feng)柱(Zhu)状(Zhuang)晶(Jing)得(De)到(Dao)发(Fa)展(Zhan)。(?)
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