鍍鋅鋼格板安(an)裝(zhuang)簡便(bian)，能夠很好的固定(ding)鋼格板，鍍鋅(xin)鋼格板焊接有(you)很多(duo)方法，那么鍍鋅(xin)鋼格板怎(zen)么焊呢？下面我們為大家詳細講解。

  手(shou)工電弧焊

  預焊接準備

  為減少(shao)焊(han)接粉(fen)塵(chen)，防止(zhi)鍍鋅(xin)鋼格柵出現(xian)焊(han)接裂紋和氣(qi)孔，焊(han)接前應(ying)清除靠近坡口(kou)的鋅(xin)層。清除方法(fa)可(ke)以是火焰烘烤或噴砂。槽隙(xi)應(ying)盡(jin)量控(kong)制在1.5-2mm之(zhi)間。當(dang)工件厚度較大時(shi)，槽隙(xi)可(ke)加寬至2.5-3mm。

  電(dian)極的選擇(ze)

  焊(han)條的(de)選擇原則是焊(han)縫(feng)金(jin)屬(shu)的(de)力學性(xing)(xing)能盡可能接近母材，焊(han)條中硅含量(liang)(liang)控制(zhi)在0.2% 以下。采用(yong)(yong)鈦(tai)(tai)(tai)鐵礦型電(dian)(dian)(dian)(dian)(dian)極(ji)、氧化鈦(tai)(tai)(tai)型電(dian)(dian)(dian)(dian)(dian)極(ji)、纖維素(su)型電(dian)(dian)(dian)(dian)(dian)極(ji)、鈦(tai)(tai)(tai)鈣型電(dian)(dian)(dian)(dian)(dian)極(ji)和低氫(qing)型電(dian)(dian)(dian)(dian)(dian)極(ji)，其結合強(qiang)度可達到滿意的(de)目(mu)的(de)。低碳鍍鋅鋼格柵應(ying)選用(yong)(yong) j421/j422或 j423電(dian)(dian)(dian)(dian)(dian)極(ji)。焊(han)接鍍鋅鋼格柵板時(shi)，應(ying)盡量(liang)(liang)使用(yong)(yong)短電(dian)(dian)(dian)(dian)(dian)弧，不應(ying)采用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)弧擺動(dong)，以防止鍍鋅層熔(rong)化區膨(peng)脹，保證工件的(de)耐腐蝕性(xing)(xing)，減少(shao)粉塵(chen)的(de)量(liang)(liang)。

  熔化極氣體保(bao)護焊(han)

  使(shi)(shi)用(yong)(yong)CO2氣(qi)體環境(jing)保(bao)護(hu)焊(han)(han)(han)(han)或(huo)(huo)(huo)混合以及氣(qi)體可以保(bao)護(hu)焊(han)(han)(han)(han)，例如Ar+CO2和Ar+O2進行研究焊(han)(han)(han)(han)接(jie)(jie)(jie)。保(bao)護(hu)工作氣(qi)體對焊(han)(han)(han)(han)縫(feng)中(zhong)鋅的含(han)(han)(han)(han)量(liang)有(you)顯(xian)著中(zhong)國影(ying)響。當(dang)使(shi)(shi)用(yong)(yong)純CO2或(huo)(huo)(huo)CO2+O2時，焊(han)(han)(han)(han)縫(feng)中(zhong)鋅的含(han)(han)(han)(han)量(liang)具有(you)較高，但當(dang)使(shi)(shi)用(yong)(yong)Ar+CO2或(huo)(huo)(huo)Ar+O2時，焊(han)(han)(han)(han)縫(feng)中(zhong)鋅的含(han)(han)(han)(han)量(liang)相對較低。電(dian)流(liu)(liu)對焊(han)(han)(han)(han)縫(feng)中(zhong)Zn的含(han)(han)(han)(han)量(liang)顯(xian)著影(ying)響作用(yong)(yong)不(bu)大。隨著我國焊(han)(han)(han)(han)接(jie)(jie)(jie)過程中(zhong)電(dian)流(liu)(liu)的增(zeng)加，焊(han)(han)(han)(han)縫(feng)中(zhong)Zn的含(han)(han)(han)(han)量(liang)方面略有(you)上(shang)升下(xia)(xia)降。當(dang)采用(yong)(yong)不(bu)同(tong)氣(qi)體通(tong)過保(bao)護(hu)焊(han)(han)(han)(han)焊(han)(han)(han)(han)接(jie)(jie)(jie)鍍鋅鋼(gang)格(ge)板(ban)時，焊(han)(han)(han)(han)接(jie)(jie)(jie)產生煙霧濃度遠大于傳(chuan)統手工電(dian)弧(hu)焊(han)(han)(han)(han)，因(yin)此應特別(bie)需要注意(yi)控(kong)制(zhi)排氣(qi)。電(dian)流(liu)(liu)和保(bao)護(hu)這些氣(qi)體是影(ying)響對于煙塵量(liang)和成分的主要經濟因(yin)素。保(bao)護(hu)利用(yong)(yong)氣(qi)體中(zhong)的電(dian)流(liu)(liu)或(huo)(huo)(huo)CO2或(huo)(huo)(huo)O2含(han)(han)(han)(han)量(liang)越(yue)(yue)來越(yue)(yue)高，焊(han)(han)(han)(han)接(jie)(jie)(jie)一個煙霧數據越(yue)(yue)大，并且(qie)由于煙氣(qi)中(zhong)的氧化鋅產品含(han)(han)(han)(han)量(liang)也(ye)增(zeng)加。最大值，氧化鋅含(han)(han)(han)(han)量(liang)可達到約70%。在相同(tong)的焊(han)(han)(han)(han)接(jie)(jie)(jie)技術規范下(xia)(xia)，鍍鋅鋼(gang)格(ge)板(ban)的穿(chuan)透(tou)力大于非(fei)鍍鋅鋼(gang)格(ge)板(ban)的穿(chuan)透(tou)力。