分餾塔封頭cs修補程序e

1、 中國石油工程建 中國石油工程建設(shè)(集團)公司喀土穆 公司喀土穆煉油廠 油廠擴建項目經(jīng)理部第六工程 理部第六工程處The Sixth Construction of CPECC Khartoum Refinery Expansion Project Management OfficePage 1 of 31.0 上封頭復(fù)層補焊部位 Mending position of stainless steel of the upper head

2、封頭拼接縫熔合線部位有兩處（長各約 50mm）在焊道修磨時可能超過規(guī)范要求，需要現(xiàn)場補焊。There are two places(50mm in length)—butt welds—that may exceed to the specification requirements when grinding and need to mend on site.2.0 焊接 Welding對需要補焊的地方采用氬弧焊進行補焊，焊接過程中應(yīng)

3、注意采用盡可能小的線能量進行焊接，以免復(fù)合鋼板因再次受熱而出現(xiàn)分層。焊道應(yīng)寬窄適宜，補焊高度盡可能低。具體焊接工藝參數(shù)如下：The mending should be carried out by the method of TIG and the mending should be executed by the minimum energy way to avoid delamination of the composite pla

4、te due to heating again by the welding. The width of the weld should be proper and the height of the surfacing should be as low as possible. The welding parameters are showed as following:焊接依據(jù)：編號為 PQR335 的焊

5、接工藝評定 Weld basic：Welding procedure qualification of PQR335焊絲 Welding wire：H00Cr19Ni12Mo2 φ2.0焊接極性 Welding polarity：直流正接 DCEN焊接電流 Welding current：90-100A 焊接電壓 Welding voltage：13-14V焊接速度 Welding velocity：6-9cm/min

6、3.0 檢查 Inspection焊接完畢，焊工應(yīng)磨平、修光補焊表面進行自檢：補焊部位與母材及原焊道應(yīng)圓滑過渡，焊縫表面不得有氣孔、咬邊等焊接缺陷。自檢合格后，利用超聲波檢查該部位復(fù)層是否因有受熱而與基層發(fā)生分層現(xiàn)象，如無，則本次補焊合格；如有則本次補焊不合格而進行再次返修。After the completion of welding, surface grinding and polishing and self-inspectin

7、g are to be carried out by the welders: between the surfacing position and base materials or former welds should be transited smoothly and the surface of the welds should be free of defects such as air holes, undercut et

8、c. After self-inspecting as acceptable, UT should be carried out and make sure there is no delamination occurs; if there is any delamination, the mending is not acceptable and mending should be executed again.中國石油工程建 中國石

9、油工程建設(shè)(集團)公司喀土穆 公司喀土穆煉油廠 油廠擴建項目經(jīng)理部第六工程 理部第六工程處The Sixth Construction of CPECC Khartoum Refinery Expansion Project Management OfficePage 3 of 3蘇丹喀土穆煉油廠擴建工程項目一期工程 蘇丹喀土穆煉油廠擴建工程項目一期工程100 萬噸 萬噸/年延 年延遲焦化裝置 焦化裝置SUDAN KHARTOUM RE

10、FINERY EXPANSION PHASE-I1,000,000 t/y DELAYED COKING UNIT文件名稱： 文件名稱：分餾塔頂封頭復(fù)層修復(fù)程序 分餾塔頂封頭復(fù)層修復(fù)程序FILE NAME: mending procedure of stainless steel of the head文件 文件編號： 號： SDB/RP-CTRU-HJ-03 SDB/RP-CTRU-HJ-03FILE No. SDB/RP-CT

11、RU-HJ-03 SDB/RP-CTRU-HJ-03文件 文件類別 類別： RP RPFILE CLASSIFICATION: RP中國石油工程建設(shè) 中國石油工程建設(shè)(集團 集團)公司喀土穆煉油廠擴建項目經(jīng)理部 公司喀土穆煉油廠擴建項目經(jīng)理部第 六 工 程 處The Sixth Construction of CPECCKhartoum Refinery Expansion Project Management OfficeA