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浙江至德(de)鋼業(ye)有限公司承接了寧波(bo)某(mou)公司“MA水解(jie)塔”和(he)“MA水解(jie)液分(fen)離塔”的(de)制(zhi)作任務。MA水解(jie)塔的(de)高度為23.3m，內徑為1000mm，塔的(de)工(gong)作壓力為0.1MPa，設(she)計壓力為0.2MPa，塔的(de)主體材(cai)質為316L不銹鋼（相當我國牌號022Cr17Ni12Mo2）。MA水...
復合焊(han)(han)接(jie)是高能(neng)(neng)焊(han)(han)與TIG、MIG和MAG焊(han)(han)各取所長，進行聯合焊(han)(han)接(jie)，以高能(neng)(neng)焊(han)(han)為基(ji)礎(chu)開發出來的(de)(de)高科(ke)技焊(han)(han)接(jie)方法。前景(jing)看好，已(yi)經從試驗階段逐步(bu)過渡到用(yong)于(yu)生產，受到人(ren)們的(de)(de)重視和關注，為高質(zhi)量(liang)高效率焊(han)(han)接(jie)技術創造了一個發展空間(jian)。一、CMT弧焊(han)(han)技術 CMT（ColdM...
激(ji)光(guang)(guang)電(dian)弧復合焊(han)有時也稱電(dian)弧輔(fu)助激(ji)光(guang)(guang)焊(han)接(jie)(jie)技術(shu)，其(qi)主要目的是有效利用激(ji)光(guang)(guang)和電(dian)弧的熱源，充分發揮兩種(zhong)熱源各自優勢，取長補短，以較小的激(ji)光(guang)(guang)功率獲得較大的熔深(shen)，穩(wen)定(ding)焊(han)接(jie)(jie)過程(cheng)，提高焊(han)接(jie)(jie)效率，降低激(ji)光(guang)(guang)焊(han)接(jie)(jie)的裝配精度(du)和應用成本。 采(cai)用激(ji)光(guang)(guang)和電(dian)弧進行焊(han)接(jie)(jie)的方(fang)式有兩種(zhong)方(fang)式：...
PA-MIG／MAG復合(he)熱源(yuan)焊接(jie)工藝方法，不僅(jin)擁有等離子(zi)弧熔深大的特點，又具(ju)備了MIG／MAG焊熔敷效率高的特點。它把(ba)MIG／MAG焊槍和(he)等離子(zi)弧焊槍融合(he)在(zai)一起，并兼容了現有的MIG／MAG焊接(jie)系統，適(shi)合(he)于(yu)自動化（機器人）的焊接(jie)，如(ru)圖3-53所示。在(zai)焊接(jie)過程中，在(zai)...
復(fu)合(he)焊(han)接(jie)工藝(yi)是指將兩種明顯不同(tong)(tong)的(de)(de)焊(han)接(jie)工藝(yi)方法組合(he)成(cheng)為一(yi)種焊(han)接(jie)工藝(yi)方法。人們將等離(li)子弧和電弧或者(zhe)將激光(guang)和電弧的(de)(de)兩個(ge)熱源進(jin)行復(fu)合(he)，通(tong)過這兩種不同(tong)(tong)焊(han)接(jie)工藝(yi)方法的(de)(de)優(you)勢(shi)互補，達到了(le)事半功倍的(de)(de)效果。其目的(de)(de)是在(zai)提(ti)高焊(han)接(jie)接(jie)頭質量的(de)(de)同(tong)(tong)時，提(ti)高了(le)生產效率，又降低(di)了(le)成(cheng)本并減(jian)輕(qing)工人的(de)(de)勞動強...
這是(shi)以聚焦的(de)(de)(de)激光(guang)(guang)(guang)(guang)束作為能源轟擊(ji)焊(han)(han)件所(suo)產生的(de)(de)(de)熱量進(jin)行(xing)焊(han)(han)接的(de)(de)(de)方法。激光(guang)(guang)(guang)(guang)是(shi)目前世界上(shang)最亮的(de)(de)(de)光(guang)(guang)(guang)(guang)，二氧化碳激光(guang)(guang)(guang)(guang)的(de)(de)(de)亮度比太陽(yang)光(guang)(guang)(guang)(guang)亮8個數(shu)量級(ji)，而高功率釹玻(bo)璃激光(guang)(guang)(guang)(guang)則比太陽(yang)光(guang)(guang)(guang)(guang)亮16個數(shu)量級(ji)。激光(guang)(guang)(guang)(guang)的(de)(de)(de)方向性很(hen)好，它能傳播(bo)到很(hen)遠的(de)(de)(de)距離，且(qie)擴(kuo)散面積小，接近于理想的(de)(de)(de)平行(xing)光(guang)(guang)(guang)(guang)。同時，激光(guang)(guang)(guang)(guang)為單(dan)色光(guang)(guang)(guang)(guang)，...
一(yi)、電(dian)子束(shu)焊(han)(han)特(te)點 電(dian)子束(shu)焊(han)(han)接(jie)與常(chang)用焊(han)(han)接(jie)方法相(xiang)比，有下(xia)列特(te)點： 1.焊(han)(han)接(jie)速(su)度快由(you)于能量特(te)別集中，熔化和凝固過程均大(da)大(da)加快，因而焊(han)(han)接(jie)速(su)度快。大(da)功(gong)率(lv)(lv)電(dian)子束(shu)焊(han)(han)機的(de)焊(han)(han)接(jie)速(su)度可達400mm/min，為氬弧焊(han)(han)的(de)40倍。 2.功(gong)率(lv)(lv)密度高、穿透能力強焊(han)(han)縫深度...
等離子(zi)(zi)(zi)弧(hu)焊(han)(han)(han)(han)(han)接(jie)(jie)是借助于水冷噴嘴對電(dian)弧(hu)的(de)(de)拘(ju)束(shu)作用(yong)，從(cong)而獲得較高(gao)能(neng)量(liang)密(mi)度(du)的(de)(de)等離子(zi)(zi)(zi)弧(hu)進(jin)行(xing)焊(han)(han)(han)(han)(han)接(jie)(jie)的(de)(de)方法。 等離子(zi)(zi)(zi)弧(hu)焊(han)(han)(han)(han)(han)與鎢(wu)極(ji)氬弧(hu)焊(han)(han)(han)(han)(han)相比具(ju)有(you)下列特點： 1.電(dian)弧(hu)能(neng)量(liang)集中(zhong)且溫度(du)高(gao)，焊(han)(han)(han)(han)(han)接(jie)(jie)過程中(zhong)電(dian)弧(hu)穩定，焊(han)(han)(han)(han)(han)接(jie)(jie)速(su)度(du)快。可(ke)以縮小焊(han)(han)(han)(han)(han)接(jie)(jie)接(jie)(jie)頭熱影響區且焊(han)(han)(han)(han)(han)接(jie)(jie)變形小，...
氣(qi)(qi)體保護焊(han)(han)(han)是用外(wai)加氣(qi)(qi)體作為(wei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)弧介質并保護電(dian)(dian)(dian)(dian)(dian)(dian)(dian)弧和焊(han)(han)(han)接區的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)弧焊(han)(han)(han)，簡稱(cheng)氣(qi)(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)焊(han)(han)(han)。根據氣(qi)(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)焊(han)(han)(han)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)熔化(hua)與(yu)否，分(fen)成(cheng)熔化(hua)極(ji)(ji)氣(qi)(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)焊(han)(han)(han)和非(fei)(fei)熔化(hua)極(ji)(ji)氣(qi)(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)焊(han)(han)(han)兩種(zhong)。熔化(hua)極(ji)(ji)氣(qi)(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)焊(han)(han)(han)，以焊(han)(han)(han)絲作為(wei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)，在施焊(han)(han)(han)過程(cheng)中，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)又(you)作為(wei)填(tian)充金(jin)屬(shu)熔入熔池形成(cheng)焊(han)(han)(han)縫金(jin)屬(shu)；非(fei)(fei)熔化(hua)極(ji)(ji)氣(qi)(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)焊(han)(han)(han)，用純鎢或活化(hua)鎢作為(wei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)，施焊(han)(han)(han)...
鎢(wu)(wu)極(ji)(ji)氬(ya)弧(hu)焊(han)雖然(ran)能(neng)(neng)獲得優良的焊(han)接(jie)(jie)(jie)(jie)(jie)質量(liang)，但由(you)于受到鎢(wu)(wu)極(ji)(ji)許用(yong)電流(liu)的限(xian)制，焊(han)接(jie)(jie)(jie)(jie)(jie)電流(liu)不能(neng)(neng)用(yong)得太大(da)。一般鎢(wu)(wu)極(ji)(ji)氬(ya)弧(hu)焊(han)進行(xing)對接(jie)(jie)(jie)(jie)(jie)接(jie)(jie)(jie)(jie)(jie)頭焊(han)接(jie)(jie)(jie)(jie)(jie)時(shi)，板厚小于4mm可以焊(han)透(tou)，超過此厚度的焊(han)件不但需要開(kai)坡口(kou)，有時(shi)還需預熱(re)才能(neng)(neng)施焊(han)。所以鎢(wu)(wu)極(ji)(ji)氬(ya)弧(hu)焊(han)焊(han)接(jie)(jie)(jie)(jie)(jie)中、厚板時(shi)，生產效率低，勞(lao)動條件差(cha)，焊(han)接(jie)(jie)(jie)(jie)(jie)變形大(da)且...
脈(mo)沖(chong)(chong)鎢(wu)極(ji)氬弧(hu)焊(han)是在普通(tong)鎢(wu)極(ji)氬弧(hu)焊(han)基(ji)礎(chu)(chu)上(shang)發展起(qi)來(lai)(lai)的一(yi)種(zhong)新的焊(han)接(jie)工藝，它通(tong)過控制(zhi)(zhi)電(dian)(dian)(dian)(dian)弧(hu)能量周期性脈(mo)沖(chong)(chong)變化(hua)來(lai)(lai)控制(zhi)(zhi)焊(han)接(jie)熔(rong)池過程，也可以(yi)以(yi)鎢(wu)極(ji)為電(dian)(dian)(dian)(dian)極(ji)。其原(yuan)理是以(yi)一(yi)個較小基(ji)值電(dian)(dian)(dian)(dian)流(liu)來(lai)(lai)維持一(yi)個電(dian)(dian)(dian)(dian)弧(hu)的電(dian)(dian)(dian)(dian)離通(tong)道，在此基(ji)礎(chu)(chu)上(shang)周期性加一(yi)個同極(ji)性高峰脈(mo)沖(chong)(chong)主(zhu)電(dian)(dian)(dian)(dian)弧(hu)，以(yi)熔(rong)化(hua)金屬并(bing)控制(zhi)(zhi)熔(rong)滴過渡。脈(mo)沖(chong)(chong)焊(han)...
鎢(wu)極(ji)氬弧(hu)(hu)焊如圖3-32所(suo)示，在(zai)焊槍所(suo)夾持的(de)鎢(wu)極(ji)與(yu)被(bei)焊工(gong)件之間通電(dian)(dian)產生(sheng)電(dian)(dian)弧(hu)(hu)，電(dian)(dian)弧(hu)(hu)空間通以惰性(xing)(xing)氣體(ti)（Ar或(huo)He），使電(dian)(dian)弧(hu)(hu)在(zai)惰性(xing)(xing)氣體(ti)的(de)氣氛中燃燒。氬或(huo)氦原子在(zai)焊接過程(cheng)中與(yu)鎢(wu)極(ji)、焊件、填充焊絲不發生(sheng)任何化學、冶金作(zuo)用。氬弧(hu)(hu)焊的(de)顯著特點是電(dian)(dian)弧(hu)(hu)燃燒穩定(ding)，能有效地隔絕周圍空氣，使...
