厚壁卷管工藝特點
厚壁卷管工藝特點
厚壁卷管對硫酸鹽(yan)(yan)(yan)鍍(du)(du)(du)鋅(xin)(xin)(xin)的優(you)(you)化 硫酸鹽(yan)(yan)(yan)鍍(du)(du)(du)鋅(xin)(xin)(xin)最大優(you)(you)點是(shi)電(dian)(dian)流效率(lv)(lv)高(gao)達100% ,沉積速率(lv)(lv)快(kuai),這(zhe)是(shi)其他鍍(du)(du)(du)鋅(xin)(xin)(xin)工藝(yi)無(wu)可比(bi)擬的。由于鍍(du)(du)(du)層(ceng)結晶(jing)不夠細(xi)致,分散能(neng)(neng)(neng)(neng)力(li)與深鍍(du)(du)(du)能(neng)(neng)(neng)(neng)力(li)較差,因而(er)只(zhi)適于幾何形(xing)狀(zhuang)簡單的管材與線(xian)材等電(dian)(dian)鍍(du)(du)(du)。硫酸鹽(yan)(yan)(yan)電(dian)(dian)鍍(du)(du)(du)鋅(xin)(xin)(xin)鐵合金(jin)工藝(yi)對傳統(tong)的硫酸鹽(yan)(yan)(yan)鍍(du)(du)(du)鋅(xin)(xin)(xin)工藝(yi)進行優(you)(you)化,只(zhi)保(bao)留了主鹽(yan)(yan)(yan)硫酸鋅(xin)(xin)(xin),其余組(zu)分均(jun)舍棄(qi)。在(zai)(zai)組(zu)成(cheng)新(xin)工藝(yi)配方中又加入(ru)適量鐵鹽(yan)(yan)(yan),使原來的單金(jin)屬鍍(du)(du)(du)層(ceng)形(xing)成(cheng)鋅(xin)(xin)(xin)鐵合金(jin)鍍(du)(du)(du)層(ceng)。工藝(yi)的重(zhong)組(zu),不僅發揚了原工藝(yi)電(dian)(dian)流效率(lv)(lv)高(gao)、沉積速率(lv)(lv)快(kuai)的優(you)(you)點,還(huan)使分散能(neng)(neng)(neng)(neng)力(li)與深鍍(du)(du)(du)能(neng)(neng)(neng)(neng)力(li)得到很(hen)大改善,過去(qu)復雜件不能(neng)(neng)(neng)(neng)鍍(du)(du)(du),現在(zai)(zai)簡單與復雜件都(dou)能(neng)(neng)(neng)(neng)鍍(du)(du)(du),而(er)且防護性能(neng)(neng)(neng)(neng)比(bi)單金(jin)屬提高(gao)3~5倍。生(sheng)產實踐(jian)證(zheng)明,用于線(xian)材、管材的連續電(dian)(dian)鍍(du)(du)(du),鍍(du)(du)(du)層(ceng)晶(jing)粒比(bi)原來的更細(xi)化、更光亮,沉積速率(lv)(lv)快(kuai)。2~3 min內鍍(du)(du)(du)層(ceng)厚度達到要求(qiu)。
厚壁卷管有很多名稱:卷管、厚壁卷管、厚壁焊管、厚壁直縫焊管、直縫焊管、厚板卷管、板卷管、鋼板卷管、焊管
材 質:
厚壁卷管常用材質為:Q235A,Q235C、Q235B、16Mn、20#、Q345、L245、L290、X42、X46、X60、X80、0Cr13、1Cr17、00Cr19Ni11、1Cr18Ni9、0Cr18Ni11Nb等。
焊(han)接厚壁(bi)卷(juan)管采用(yong)的(de)坯(pi)料是鋼板或帶鋼,因(yin)其(qi)焊(han)接工藝不(bu)同而(er)分(fen)為爐焊(han)卷(juan)管、電(dian)焊(han)(電(dian)阻焊(han))卷(juan)管和自動(dong)電(dian)弧卷(juan)管。直(zhi)(zhi)徑(jing)大(da)或較厚的(de)卷(juan)管,一般用(yong)鋼坯(pi)料直(zhi)(zhi)接做成,而(er)小薄壁(bi)卷(juan)管只需要通過鋼帶直(zhi)(zhi)接焊(han)接就可(ke)以了(le)。然后經過簡單拋光,拉絲就可(ke)以了(le)。
沉積速率快、防護性能優(you)異
厚壁(bi)卷管采(cai)用硫酸鹽電鍍鋅鐵(tie)合金工(gong)藝(yi),在于生產(chan)線(xian)槽與槽間均穿孔(kong)直通而溶液無任何(he)帶出或溢流。生產(chan)過程各(ge)工(gong)序由循(xun)環(huan)系統(tong)組成(cheng),各(ge)槽溶液即酸堿(jian)液、電鍍液、出光與 鈍化液等,只(zhi)循(xun)環(huan)回(hui)(hui)用不向系統(tong)外滲漏或排放,生產(chan)線(xian)只(zhi)設5個清(qing)(qing)洗槽,采(cai)用循(xun)環(huan)回(hui)(hui)用定期排放,特別是(shi)鈍化后不清(qing)(qing)洗的無廢水產(chan)生的生產(chan)工(gong)藝(yi)。
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