無縫(feng)鋼管剩磁原因分(fen)析小口徑無縫(feng)鋼管
在無縫(feng)鋼管(guan)(guan)(guan)(guan)制造廠(chang)里(li)有多種(zhong)原因會使(shi)鋼管(guan)(guan)(guan)(guan)帶上磁(ci)性(xing)(xing)，無縫(feng)鋼管(guan)(guan)(guan)(guan)剩(sheng)磁(ci)產(chan)生(sheng)的(de)原因主(zhu)要有:工藝磁(ci)性(xing)(xing)和感(gan)應磁(ci)性(xing)(xing)。感(gan)應磁(ci)性(xing)(xing)常產(chan)生(sheng)在工廠(chang)制管(guan)(guan)(guan)(guan)環節：如(ru)，金屬熔(rong)煉(lian)常采用(yong)(yong)電(dian)(dian)磁(ci)起重機(ji)進(jin)行裝(zhuang)卸，不銹鋼管(guan)(guan)(guan)(guan)在強(qiang)磁(ci)場中(zhong)停置(zhi)，用(yong)(yong)磁(ci)化(hua)法完成無損(sun)(sun)檢(jian)查(用(yong)(yong)鋼管(guan)(guan)(guan)(guan)磁(ci)異常現象進(jin)行無損(sun)(sun)檢(jian)測(ce)(ce)(ce)檢(jian)測(ce)(ce)(ce)前，先(xian)對鋼管(guan)(guan)(guan)(guan)磁(ci)化(hua)），鋼管(guan)(guan)(guan)(guan)接(jie)近強(qiang)力供電(dian)(dian)線放聳(song)等(deng)(deng)等(deng)(deng)。其中(zhong)，磁(ci)化(hua)法無損(sun)(sun)檢(jian)查主(zhu)要指的(de)是渦(wo)流探(tan)傷(shang)，渦(wo)流探(tan)傷(shang)設備操作(zuo)簡單，易于(yu)掌握，如(ru)果使(shi)用(yong)(yong)得當，能夠檢(jian)測(ce)(ce)(ce)出鋼管(guan)(guan)(guan)(guan)中(zhong)人部分缺陷。是目測(ce)(ce)(ce)，超(chao)聲波，水壓試驗等(deng)(deng)幾種(zhong)鋼管(guan)(guan)(guan)(guan)探(tan)傷(shang)試驗中(zhong)不可(ke)缺少的(de)一種(zhong)無損(sun)(sun)檢(jian)測(ce)(ce)(ce)手段。工藝磁(ci)性(xing)(xing)常產(chan)生(sheng)在進(jin)行裝(zhuang)配焊接(jie)作(zuo)業及(ji)采用(yong)(yong)磁(ci)性(xing)(xing)夾持器、夾具與用(yong)(yong)立流電(dian)(dian)焊接(jie)管(guan)(guan)(guan)(guan)道(dao)時(shi)，如(ru):長(chang)時(shi)問接(jie)觸與直流電(dian)(dian)源相連的(de)導線，導線裸露段或者電(dian)(dian)焊鉗與管(guan)(guan)(guan)(guan)子的(de)短(duan)路等(deng)(deng)。
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