如果想知道為什么卷板機鑄(zhu)(zhu)件(jian)修(xiu)正的成(cheng)果不抱負，能(neng)(neng)夠經(jing)過對幾(ji)種傳統焊補(bu)工藝在卷板(ban)機(ji)(ji)鑄(zhu)(zhu)件(jian)缺(que)點(dian)處剖析找(zhao)到(dao)原因。經(jing)過對鑄(zhu)(zhu)造缺(que)點(dian)修(xiu)補(bu)機(ji)(ji)在卷板(ban)機(ji)(ji)鑄(zhu)(zhu)件(jian)的修(xiu)正成(cheng)果的研討，能(neng)(neng)夠確定一種新的技(ji)能(neng)(neng)及(ji)其(qi)工藝,對卷板(ban)機(ji)(ji)鑄(zhu)(zhu)件(jian)上修(xiu)正是的確可行(xing)的。

傳統焊補工藝的焊補成果及剖析材質HT200，導軌缺點處面積S<1000mm2，深度h<8mm。熱處理狀態:3件未進行表面淬火，1件已表面淬火。用鎳基焊粉F103，電弧焊用鑄鐵焊條：Z308、Z248。2.1.2噴焊設備，電弧焊設備，鎳基焊粉F103(C≤0.158.0

1、噴(pen)焊(han)按噴(pen)焊(han)工(gong)藝執行，將(jiang)導軌面預熱(re)(re)至(zhi)150℃以上，完結(jie)開始焊(han)粉(fen)的(de)噴(pen)涂后，將(jiang)噴(pen)涂面加(jia)熱(re)(re)至(zhi)900℃-1200℃以上，使(shi)焊(han)粉(fen)熔化后構(gou)成平整(zheng)面。因(yin)為(wei)(wei)預熱(re)(re)及加(jia)熱(re)(re)時(shi)刻長，工(gong)件受熱(re)(re)面積(ji)較大，熱(re)(re)應力(li)較大,比電(dian)弧焊(han)更簡單發(fa)生裂紋，一起線縮(suo)短發(fa)生裂紋傾(qing)向更大。因(yin)為(wei)(wei)裂紋傾(qing)向受噴(pen)焊(han)時(shi)刻、噴(pen)層厚度等(deng)要素影響，缺點(dian)巨(ju)細受到必定約束，并且焊(han)補(bu)的(de)缺點(dian)需整(zheng)理潔凈，因(yin)為(wei)(wei)噴(pen)粉(fen)中含Fe量(liang)份額(e)較高(gao),構(gou)成的(de)噴(pen)層較電(dian)弧焊(han)與(yu)母(mu)(mu)材(cai)(cai)的(de)色彩更相(xiang)近。但(dan)因(yin)具有必定量(liang)的(de)Ni，所以無法與(yu)母(mu)(mu)材(cai)(cai)色彩更挨(ai)近，焊(han)補(bu)后能夠(gou)進(jin)行機械加(jia)工(gong)。

2、電弧焊(han)(han)(han)(han)用(yong)鑄鐵焊(han)(han)(han)(han)條(tiao)Z248進行焊(han)(han)(han)(han)補，焊(han)(han)(han)(han)補工(gong)(gong)藝分兩種，第一種：焊(han)(han)(han)(han)前預熱至550℃-650℃，焊(han)(han)(han)(han)補后保(bao)溫5-8小時(shi);第二種：工(gong)(gong)件焊(han)(han)(han)(han)前不(bu)預熱，焊(han)(han)(han)(han)后保(bao)溫3-4小時(shi)。兩種辦法均易呈現裂(lie)紋、硬點,焊(han)(han)(han)(han)補后不(bu)簡單進行機械加工(gong)(gong)。焊(han)(han)(han)(han)條(tiao)價格便宜。用(yong)鎳基鑄鐵焊(han)(han)(han)(han)條(tiao)Z308焊(han)(han)(han)(han)條(tiao)焊(han)(han)(han)(han)補，焊(han)(han)(han)(han)層與(yu)焊(han)(han)(han)(han)層之間應停頓(dun)冷卻至60℃以下，焊(han)(han)(han)(han)補區(qu)少氣孔(kong)、裂(lie)紋發生(sheng),機械加工(gong)(gong)性杰出，結合強度(du)高、無脫(tuo)落現象,因(yin)為卷板機導軌加工(gong)(gong)后吸(xi)油及焊(han)(han)(han)(han)條(tiao)吹(chui)力(li)的影響,易發生(sheng)咬邊、構成“焊(han)(han)(han)(han)補痕跡(ji)”,焊(han)(han)(han)(han)補區(qu)色彩與(yu)母(mu)材有很大差(cha)異,并(bing)且(qie)焊(han)(han)(han)(han)條(tiao)價格昂貴。

3、從剖析的成果就能夠得出：傳統焊補工藝不能徹底解決卷板機導軌缺點修正的底子原因是統的噴焊、電弧焊工藝,焊補后易發生裂紋，工件易受熱變形,簡單呈現二次氣孔，焊補處金屬色彩與母材差異大是其一起的特色。

If you want to know why the results of the revision of the coiling machine castings are not ambitious, we can find out the reasons for the shortcomings of several traditional welding processes in the bending parts of the bending machine. After discussing the revision results of the casting defect repair machine in the coiling machine castings, we can identify a new skill and technology, and correct it on the coiling machine castings.