不銹鋼拋光注意事項

研(yan)磨(mo)操作中(zhong)用(yong)砂(sha)紙或砂(sha)帶(dai)進行的(de)(de)(de)研(yan)磨(mo)基本上(shang)屬于磨(mo)光切割操作，在(zai)(zai)鋼(gang)(gang)板表面留下(xia)很(hen)細的(de)(de)(de)紋路(lu)。 在(zai)(zai)用(yong)氧(yang)化鋁作為(wei)磨(mo)料時曾遇到過麻煩，其部分原因是(shi)壓力問題。設備的(de)(de)(de)任何研(yan)磨(mo)部件，如(ru)： 砂(sha)帶(dai)和(he)磨(mo)輪等，使用(yong)前(qian)不能用(yong)于其它(ta)非不銹鋼(gang)(gang)材料。因為(wei)這(zhe)樣會污染不銹鋼(gang)(gang)表面。為(wei)了(le)保證不銹鋼(gang)(gang)加(jia)工表面的(de)(de)(de)一致性，新(xin)砂(sha)輪或砂(sha)帶(dai)應先(xian)在(zai)(zai)成分相同(tong)的(de)(de)(de)廢(fei)料上(shang)試(shi)用(yong)，以便同(tong)樣品(pin)進行比較。

低(di)(di)(di)(di)合金鋼板仰焊(han)(han)(han)位(wei)置(zhi)焊(han)(han)(han)接(jie)操作(zuo)技法是板對接(jie)幾種單面(mian)焊(han)(han)(han)雙面(mian)成(cheng)形焊(han)(han)(han)接(jie)方(fang)式中(zhong)難焊(han)(han)(han)的一種焊(han)(han)(han)接(jie)位(wei)置(zhi)，采(cai)用(yong)焊(han)(han)(han)條電弧焊(han)(han)(han)進(jin)(jin)行(xing)焊(han)(han)(han)接(jie)。焊(han)(han)(han)接(jie)時，焊(han)(han)(han)縫熔(rong)池位(wei)于燃燒電弧的上方(fang)，焊(han)(han)(han)工在仰視位(wei)置(zhi)進(jin)(jin)行(xing)焊(han)(han)(han)接(jie)有視覺差，不(bu)銹鋼零件加工，握焊(han)(han)(han)把手臂市有近向遠(由低(di)(di)(di)(di)到高(gao))處，增加了操作(zuo)困難性(xing);另外，人居工件的高(gao)度要適中(zhong)，低(di)(di)(di)(di)了不(bu)便觀察熔(rong)池，304不(bu)銹鋼廚房定(ding)制，高(gao)了進(jin)(jin)行(xing)焊(han)(han)(han)接(jie)時手臂越舉越高(gao)，降低(di)(di)(di)(di)操作(zuo)時焊(han)(han)(han)條的穩定(ding)性(xing)，增加勞動強度。

在(zai)打(da)底焊(han)(han)時，由于焊(han)(han)條(tiao)熔(rong)(rong)(rong)(rong)滴金(jin)屬(shu)(shu)重力(li)的作(zuo)(zuo)用，會阻礙熔(rong)(rong)(rong)(rong)滴過(guo)渡(du)，容(rong)易(yi)(yi)出(chu)現(xian)粘焊(han)(han)條(tiao)的現(xian)象;熔(rong)(rong)(rong)(rong)滴倒懸在(zai)焊(han)(han)見的下(xia)方(fang)，沒(mei)有固體金(jin)屬(shu)(shu)的依托(tuo)，熔(rong)(rong)(rong)(rong)化金(jin)屬(shu)(shu)在(zai)重力(li)的作(zuo)(zuo)用下(xia)，容(rong)易(yi)(yi)下(xia)淌(tang)；熔(rong)(rong)(rong)(rong)池(chi)(chi)只(zhi)有依靠金(jin)屬(shu)(shu)溶液的表面(mian)(mian)張力(li)和電弧吹(chui)力(li)才持續(xu)存在(zai)。熔(rong)(rong)(rong)(rong)池(chi)(chi)溫度越高，熔(rong)(rong)(rong)(rong)池(chi)(chi)及熔(rong)(rong)(rong)(rong)滴表面(mian)(mian)張力(li)越小，越容(rong)易(yi)(yi)下(xia)墜。因此，附近(jin)不銹鋼加工(gong)店(dian)，熔(rong)(rong)(rong)(rong)池(chi)(chi)形(xing)狀(zhuang)和大(da)小不容(rong)易(yi)(yi)控制(zhi)，常(chang)出(chu)現(xian)夾渣、未焊(han)(han)透、背(bei)面(mian)(mian)凹陷(xian)(xian)、正(zheng)面(mian)(mian)凸起、咬邊(bian)等(deng)缺陷(xian)(xian)，必須短弧小規范(fan)焊(han)(han)接。

不(bu)(bu)銹鋼加工在仰焊(han)(han)(han)過(guo)(guo)程中，焊(han)(han)(han)條(tiao)直徑(jing)一般(ban)不(bu)(bu)超過(guo)(guo)4.0mm，焊(han)(han)(han)接電(dian)(dian)流比平焊(han)(han)(han)的(de)焊(han)(han)(han)接電(dian)(dian)流小(xiao)15～20%。焊(han)(han)(han)條(tiao)直徑(jing)過(guo)(guo)大(da)，會導致焊(han)(han)(han)條(tiao)熔(rong)(rong)滴過(guo)(guo)渡(du)困難(nan)；假如焊(han)(han)(han)接電(dian)(dian)流過(guo)(guo)大(da)，會促使(shi)(shi)(shi)熔(rong)(rong)池(chi)溫度加高(gao)，體積增(zeng)(zeng)大(da)，金屬(shu)溶液(ye)流動性增(zeng)(zeng)加，容易(yi)造成熔(rong)(rong)池(chi)金屬(shu)向下流淌，會使(shi)(shi)(shi)打底(di)層(ceng)熔(rong)(rong)孔增(zeng)(zeng)大(da)，背面焊(han)(han)(han)縫(feng)下凹(ao)，填充和蓋面層(ceng)凸起；焊(han)(han)(han)接電(dian)(dian)流太(tai)小(xiao)，會使(shi)(shi)(shi)根部(bu)不(bu)(bu)容易(yi)焊(han)(han)(han)透，產生夾渣及焊(han)(han)(han)縫(feng)成形不(bu)(bu)良(liang)等缺(que)陷(xian)。

不銹鋼工程施(shi)工中(zhong)要注意哪些事項？

(1)搭設的腳手架必(bi)須牢(lao)固可靠，不得(de)松動(dong)，施工中應戴好安(an)全(quan)帽;

(2)施(shi)工現場禁止吸煙及明(ming)火(huo)作業，尤其(qi)在(zai)使用萬l能膠進行飾(shi)面粘結時，更應注意(yi)煙火(huo);防止發生火(huo)災;

(3)使用電動工具前(qian)，應檢查電源、接線板、電纜(lan)和開關(guan)等是(shi)合符合要求，經檢查合格(ge)后(hou)方(fang)可(ke)使用;

(4)每班完工(gong)后，應切斷電(dian)源，并將使用的工(gong)具等妥(tuo)善保管(guan)好;

(5)不(bu)銹鋼飾面的保(bao)(bao)護層在施工(gong)中(zhong)一定要(yao)保(bao)(bao)護好，不(bu)得隨意撕掉，待施工(gong)完畢(bi)才準(zhun)撕掉。