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鍛造初(chu)步(bu)工藝實驗策劃

文章來源：sjzwx 更新時間：2015-01-28 10:33:53

    模擬(ni)實際焊(han)(han)(han)(han)(han)(han)修(xiu)現(xian)場環境(jing)條件(jian)(jian)(jian)(jian)，對工(gong)(gong)作(zuo)(zuo)(zuo)試(shi)(shi)件(jian)(jian)(jian)(jian)進(jin)(jin)行(xing)焊(han)(han)(han)(han)(han)(han)接(jie)作(zuo)(zuo)(zuo)業．以達(da)到檢驗目的(de)．以外形(xing)尺寸(cun)為120mmx120ram、厚度(du)(du)為112ram、中(zhong)(zhong)心(xin)鉆qb40mm圓孔、材質(zhi)為Q345C作(zuo)(zuo)(zuo)為焊(han)(han)(han)(han)(han)(han)修(xiu)模擬(ni)試(shi)(shi)件(jian)(jian)(jian)(jian)本(ben)次試(shi)(shi)驗采(cai)(cai)用(yong)(yong)(yong)焊(han)(han)(han)(han)(han)(han)堵方式(shi)為每次從(cong)050孔圓心(xin)引弧，旋轉焊(han)(han)(han)(han)(han)(han)接(jie)至圓孔邊緣(yuan)．每次補焊(han)(han)(han)(han)(han)(han)的(de)深度(du)(du)不(bu)超過5mm，層(ceng)與層(ceng)之(zhi)(zhi)間須清除氧化皮。控(kong)(kong)制層(ceng)間溫(wen)度(du)(du)，層(ceng)間溫(wen)度(du)(du)應控(kong)(kong)制在(zai)200~C之(zhi)(zhi)內(每層(ceng)焊(han)(han)(han)(han)(han)(han)接(jie)完畢后冷卻15min)。焊(han)(han)(han)(han)(han)(han)絲使用(yong)(yong)(yong)合金(jin)焊(han)(han)(han)(han)(han)(han)絲(H08Mn2SiA)，焊(han)(han)(han)(han)(han)(han)條使用(yong)(yong)(yong)J506。采(cai)(cai)用(yong)(yong)(yong)焊(han)(han)(han)(han)(han)(han)絲焊(han)(han)(han)(han)(han)(han)接(jie)時(shi)平(ping)焊(han)(han)(han)(han)(han)(han)焊(han)(han)(han)(han)(han)(han)接(jie)電(dian)(dian)流(liu)控(kong)(kong)制在(zai)190A～210A，電(dian)(dian)壓控(kong)(kong)制在(zai)23V～25V；采(cai)(cai)用(yong)(yong)(yong)焊(han)(han)(han)(han)(han)(han)條(直(zhi)徑3．2mm)焊(han)(han)(han)(han)(han)(han)接(jie)時(shi)電(dian)(dian)流(liu)控(kong)(kong)制在(zai)120A160A。試(shi)(shi)樣檢測分(fen)為外觀檢查Prr、磁粉探(tan)傷(shang)MT和(he)射線探(tan)傷(shang)RT，其中(zhong)(zhong)RT探(tan)傷(shang)能夠直(zhi)觀檢測試(shi)(shi)件(jian)(jian)(jian)(jian)內部(bu)焊(han)(han)(han)(han)(han)(han)接(jie)質(zhi)量。試(shi)(shi)驗制作(zuo)(zuo)(zuo)結果(guo)及分(fen)析：第一(yi)(yi)批試(shi)(shi)驗條件(jian)(jian)(jian)(jian)：要求中(zhong)(zhong)級以上中(zhong)(zhong)級技工(gong)(gong)焊(han)(han)(han)(han)(han)(han)接(jie)水(shui)平(ping)工(gong)(gong)人進(jin)(jin)行(xing)焊(han)(han)(han)(han)(han)(han)接(jie)．試(shi)(shi)件(jian)(jian)(jian)(jian)焊(han)(han)(han)(han)(han)(han)前未(wei)(wei)進(jin)(jin)行(xing)預熱且(qie)焊(han)(han)(han)(han)(han)(han)后也未(wei)(wei)進(jin)(jin)行(xing)退(tui)火處理(li)。試(shi)(shi)驗結果(guo)：PT、MT探(tan)傷(shang)未(wei)(wei)出現(xian)異常現(xian)象(xiang)(xiang)但是RT探(tan)傷(shang)底片顯示出現(xian)較多缺陷．缺陷表現(xian)為：呈現(xian)點狀(zhuang)(zhuang)未(wei)(wei)融合連成片的(de)狀(zhuang)(zhuang)態，沿孔壁呈條狀(zhuang)(zhuang)分(fen)布(bu)。第二批試(shi)(shi)驗條件(jian)(jian)(jian)(jian)：操(cao)作(zuo)(zuo)(zuo)人員不(bu)變的(de)情況下．更換另(ling)一(yi)(yi)批試(shi)(shi)件(jian)(jian)(jian)(jian)．先期進(jin)(jin)行(xing)試(shi)(shi)件(jian)(jian)(jian)(jian)預熱至150~C．焊(han)(han)(han)(han)(han)(han)接(jie)試(shi)(shi)件(jian)(jian)(jian)(jian)在(zai)帶傾角的(de)轉臺上進(jin)(jin)行(xing)焊(han)(han)(han)(han)(han)(han)接(jie)，保(bao)證焊(han)(han)(han)(han)(han)(han)接(jie)孔壁邊緣(yuan)時(shi)呈現(xian)45。夾角。焊(han)(han)(han)(han)(han)(han)接(jie)完成后進(jin)(jin)行(xing)試(shi)(shi)件(jian)(jian)(jian)(jian)退(tui)火處理(li)。試(shi)(shi)驗結果(guo)：PT、MT探(tan)傷(shang)未(wei)(wei)出現(xian)異常現(xian)象(xiang)(xiang)，RT探(tan)傷(shang)發現(xian)孔的(de)邊緣(yuan)位(wei)置存在(zai)幾處點狀(zhuang)(zhuang)未(wei)(wei)熔合現(xian)象(xiang)(xiang)(點狀(zhuang)(zhuang)缺陷)．且(qie)在(zai)底片上離散分(fen)布(bu)。