二氧化碳液態低溫容器槽車是由外容器和內容器組成。內容器材質為06Cr18Ni11Ti不銹鋼，壁厚16mm。內容器外形尺寸：直徑1600mm，長為5786mm，容積為11m3。除進行外觀目視檢查外，還必須對焊縫進行100％的滲透檢測和100％的射線檢測。內容器還要進行2.88MPa干燥無油壓縮空氣試驗和氦質譜真空檢漏，漏氣率不大于2×10-5Pa·L／s。
焊(han)(han)接工(gong)藝：所有縱焊(han)(han)縫和環(huan)焊(han)(han)縫（除一端頭與筒體環(huan)焊(han)(han)縫外(wai)）均采用(yong)埋弧焊(han)(han)，焊(han)(han)機(ji)型(xing)號為(wei)MZ-1000型(xing)，采用(yong)直(zhi)流(liu)反極性電源。焊(han)(han)絲牌號H08Cr19Ni10Ti，直(zhi)徑為(wei)4mm，焊(han)(han)劑為(wei)HJ260。
1. 縱縫埋(mai)弧焊
鋼板(ban)放在刨邊(bian)機上(shang)按圖(tu)3-72進行坡口加工，待焊(han)(han)(han)(han)鋼板(ban)放在門式焊(han)(han)(han)(han)接(jie)夾具(ju)（圖(tu)3-19）上(shang)進行裝配，待焊(han)(han)(han)(han)處清(qing)除油污后(hou)進行焊(han)(han)(han)(han)接(jie)，焊(han)(han)(han)(han)接(jie)參數見表3-62，焊(han)(han)(han)(han)好(hao)第(di)1、2層焊(han)(han)(han)(han)縫(feng)后(hou)要進行清(qing)根，先用(yong)碳(tan)弧氣刨，然后(hou)用(yong)風動砂輪清(qing)理打磨出金屬(shu)光澤，并保證清(qing)根后(hou)凹(ao)槽尺寸均勻一(yi)致，然后(hou)焊(han)(han)(han)(han)接(jie)第(di)3層焊(han)(han)(han)(han)縫(feng)。
2. 環縫埋弧焊
環縫(feng)埋弧(hu)焊(han)(han)(han)(han)(han)接(jie)包括筒節與筒節和筒節與一端頭(tou)的環縫(feng)焊(han)(han)(han)(han)(han)接(jie)。將(jiang)焊(han)(han)(han)(han)(han)好的筒節、封頭(tou)放在(zai)焊(han)(han)(han)(han)(han)接(jie)滾輪架（見圖3-18）上進(jin)行(xing)(xing)裝配，用焊(han)(han)(han)(han)(han)條電弧(hu)焊(han)(han)(han)(han)(han)進(jin)行(xing)(xing)定位(wei)焊(han)(han)(han)(han)(han)，在(zai)平臺式焊(han)(han)(han)(han)(han)接(jie)操(cao)作機上（如圖3-19）進(jin)行(xing)(xing)環縫(feng)焊(han)(han)(han)(han)(han)接(jie)，先焊(han)(han)(han)(han)(han)內焊(han)(han)(han)(han)(han)縫(feng)（第1、2層）然后按縱縫(feng)工藝(yi)進(jin)行(xing)(xing)清根(gen)再(zai)焊(han)(han)(han)(han)(han)第3層焊(han)(han)(han)(han)(han)縫(feng)，焊(han)(han)(han)(han)(han)接(jie)參(can)數可參(can)表3-62。
上述(shu)縱、環縫(feng)焊接完畢(bi)，先(xian)進(jin)(jin)行(xing)(xing)目視檢查(cha)，然后(hou)進(jin)(jin)行(xing)(xing)100％滲透(tou)檢測，排除焊縫(feng)表面缺陷后(hou)，再進(jin)(jin)行(xing)(xing)100％射(she)線檢測，焊縫(feng)內部質量應達到設計圖樣要求(qiu)后(hou)才能進(jin)(jin)行(xing)(xing)下面工(gong)序。
3. 另一封頭(tou)與筒(tong)體焊接
內容(rong)器(qi)(qi)是(shi)(shi)一個密(mi)封容(rong)器(qi)(qi)（除(chu)輸入(ru)、輸出液管路外），沒(mei)有人(ren)孔裝置，焊(han)(han)(han)(han)(han)(han)(han)(han)接設備和人(ren)員無法進入(ru)容(rong)器(qi)(qi)內操(cao)作。采(cai)用(yong)(yong)的焊(han)(han)(han)(han)(han)(han)(han)(han)接工藝如(ru)圖3-73所示。內環縫增加了一個環形墊圈，材(cai)質與內容(rong)器(qi)(qi)材(cai)質相同，墊圈厚度為4mm，寬度為30mm。先用(yong)(yong)鎢極氬(ya)弧(hu)焊(han)(han)(han)(han)(han)(han)(han)(han)進行(xing)(xing)打底焊(han)(han)(han)(han)(han)(han)(han)(han)，保證焊(han)(han)(han)(han)(han)(han)(han)(han)透實現單面(mian)焊(han)(han)(han)(han)(han)(han)(han)(han)雙面(mian)成形，通過100％射線(xian)檢(jian)(jian)測判(pan)片合格(ge)后(hou)，進行(xing)(xing)第2層(ceng)焊(han)(han)(han)(han)(han)(han)(han)(han)條電弧(hu)焊(han)(han)(han)(han)(han)(han)(han)(han)，其目的是(shi)(shi)提高焊(han)(han)(han)(han)(han)(han)(han)(han)縫厚度，防(fang)止埋(mai)(mai)弧(hu)焊(han)(han)(han)(han)(han)(han)(han)(han)時(shi)由于熔深(shen)過大而將(jiang)打底焊(han)(han)(han)(han)(han)(han)(han)(han)焊(han)(han)(han)(han)(han)(han)(han)(han)縫焊(han)(han)(han)(han)(han)(han)(han)(han)穿。第3層(ceng)環形焊(han)(han)(han)(han)(han)(han)(han)(han)縫用(yong)(yong)埋(mai)(mai)弧(hu)焊(han)(han)(han)(han)(han)(han)(han)(han)完成。各層(ceng)焊(han)(han)(han)(han)(han)(han)(han)(han)縫的焊(han)(han)(han)(han)(han)(han)(han)(han)接參數見表3-63。焊(han)(han)(han)(han)(han)(han)(han)(han)后(hou)將(jiang)環焊(han)(han)(han)(han)(han)(han)(han)(han)縫進行(xing)(xing)滲透檢(jian)(jian)測和射線(xian)檢(jian)(jian)測合格(ge)后(hou)再進行(xing)(xing)無油干燥(zao)氣壓(ya)試驗和氮質譜真(zhen)空檢(jian)(jian)漏。全部滿(man)足圖樣技術性(xing)能要(yao)求后(hou)才能與外容(rong)器(qi)(qi)進行(xing)(xing)組裝。
