氧化碳?xì)怏w保護(hù)焊接方案中英

1、Content目錄 TOC o 1-2 h z u HYPERLINK l _Toc303972414 1.Project overview工程概況 PAGEREF _Toc303972414 h 1 HYPERLINK l _Toc303972415 2.Fabrication reference編制依據(jù) PAGEREF _Toc303972415 h 1 HYPERLINK l _Toc303972416 3.Construction features施工特點(diǎn) PAGEREF _Toc303972416 h 1 HYPERLINK l _Toc303972417 4.Constructio

2、n preparation施工準(zhǔn)備 PAGEREF _Toc303972417 h 1 HYPERLINK l _Toc303972418 4.1.Preparation before welding焊前準(zhǔn)備 PAGEREF _Toc303972418 h 1 HYPERLINK l _Toc303972419 4.2.Construction working conditions preparation施工作業(yè)條件準(zhǔn)備 PAGEREF _Toc303972419 h 2 HYPERLINK l _Toc303972420 5.Construction process施工工藝 PAGEREF

3、_Toc303972420 h 2 HYPERLINK l _Toc303972421 5.1Wedling process焊接工藝 PAGEREF _Toc303972421 h 2 HYPERLINK l _Toc303972422 5.2Root cleanness process清根工藝 PAGEREF _Toc303972422 h 3 HYPERLINK l _Toc303972423 6.Construction attentions施工注意事項(xiàng) PAGEREF _Toc303972423 h 4 HYPERLINK l _Toc303972424 7.Safety housek

4、eeping安全文明施工 PAGEREF _Toc303972424 h 4 HYPERLINK l _Toc303972425 7.1.Safety assurance measures安全保證措施 PAGEREF _Toc303972425 h 4 HYPERLINK l _Toc303972426 7.2.Housekeeping文明施工 PAGEREF _Toc303972426 h 41.Project overview工程概況Completed, in order to efficiently shelf life for the engineering characteristi

5、cs of large diameter carbon steel pipeline welding tasks, with carbon dioxide gas shielded welding the bassoon weld when needed.針對(duì)本工程的碳鋼管線直徑大的特點(diǎn)，為了高效保質(zhì)完成焊接任務(wù)，焊接大管焊縫時(shí)需要用二氧化碳?xì)怏w進(jìn)行保護(hù)焊接。2.Fabrication reference 編制依據(jù)1、The construction contract and the owners of the project construction plans本工程施工合同及業(yè)主提供的本工

6、程施工圖；2、The projects audited, approved the construction organization design ;本工程經(jīng)審核、批準(zhǔn)的施工組織設(shè)計(jì)；3、The carbon dioxide gas shielded welding wireGB81102008二氧化碳?xì)怏w保護(hù)焊用焊絲GB811020084、Specification for welding of steel structure buildings JGJ812002建筑鋼結(jié)構(gòu)焊接技術(shù)規(guī)程JGJ8120025、Gas welding, manual arc welding and gas-s

7、hielded arc welding weld groove basic form and sizeGB985.1-2008.氣焊、手工電弧焊及氣體保護(hù)焊焊縫坡口的基本形式與尺寸GB985.1-2008.6、Code for acceptance of construction quality of steel structuresGB502052001鋼結(jié)構(gòu)工程施工質(zhì)量驗(yàn)收規(guī)范GB5020520013.Construction features施工特點(diǎn)1、Weld appearance, weld molding no longer polished, uniform weld geome

8、try.焊縫成型美觀，焊縫焊接成型后無需再打磨處理，焊縫幾何尺寸均勻一致。2、Less weld spatter, flux-cored arc stabilizer added, stable arc burning droplet was drop wise even excessive when welding spatter few small particles and splashing, cooling faster, easier to clear.焊接飛濺少，藥芯焊絲在其中加入了穩(wěn)弧劑，電弧燃燒穩(wěn)定，熔滴呈滴狀均勻過度，故焊接時(shí)飛濺很少，且飛濺顆粒細(xì)小，冷卻速度快，清除較容易

9、。3、Weld shrinkage deformation is small, due to the welding heat input focus, small heat-affected zone, weld shrinkage deformation is small, small welding residual stress.焊縫收縮變形小，由于其焊接熱量輸入集中，熱影響區(qū)小，因此焊接收縮變形小，焊接殘余應(yīng)力小。4、High welding efficiency, high current density filaments automatic welding, determine

10、 its higher melting fill speed, thereby generating a high welding speed, and the automatic welding process and eliminates the need for frequent replacement of the manual welding electrode time.焊接效率高，細(xì)絲自動(dòng)焊的高電流密度，決定了其較高的熔填速度，從而產(chǎn)生較高的焊接速度，且自動(dòng)焊過程省去了手工焊中頻繁更換焊條的時(shí)間。4.Construction preparation施工準(zhǔn)備4.1.Preparat

11、ion before welding焊前準(zhǔn)備1. Welding groove焊接坡口：（1）The weld groove of a V-shaped groove.焊縫坡口為V型坡口。（2）The welding groove shall be smooth, no cracks, delamination, slag and other defects dimensions conform to the pattern provisions.焊接坡口應(yīng)平整，不得有裂紋、分層、夾渣等缺陷，尺寸符合圖樣規(guī)定。（3）Surface of the groove and on each side

12、of 50mm before welding water, rust, oil, product residue and other harmful impurities in the welding should be cleaned.坡口表面及兩側(cè)各50mm焊前應(yīng)將水、鐵銹、油污、積渣和其它有害于焊接的雜質(zhì)清除干凈。（4）Weld group gap should be 3 1mm.焊縫組對(duì)間隙宜為31mm.2、Welding material焊接材料：CO2 gas shielded welding to 1.2 ER70S-6 wire, to protect the gas usin

13、g CO2. CO2氣體保護(hù)焊采用1.2的ER70S-6焊絲，保護(hù)氣體采用CO2。3、Welding wire management 焊絲管理：（1）Starting welding wire must have factory certificate of chemical composition and mechanical properties within the warranty book must comply with the relevant provisions of the State.施焊中的焊絲，必須具有出廠合格證書，質(zhì)保書內(nèi)的化學(xué)成份及機(jī)械性能必須符合國(guó)家有關(guān)規(guī)定。（

14、2）Wire into the box packaging, the official shall not be opened before welding to prevent moisture in the air.焊絲成盒包裝，正式施焊前不得拆封，以免在空氣中受潮。（3）The welding material designated persons responsible for the safekeeping, disbursement and recovery.焊接材料設(shè)專人負(fù)責(zé)保管、發(fā)放和回收。（4）The welding consumables library must be k

15、ept dry, relative humidity less than 60% of the coffers of not less than 10 C temperature.焊材庫必須保持干燥，相對(duì)濕度不大于60%，庫房?jī)?nèi)的溫度不低于10。4、Welder certificate 焊工資格：The welder must hold a certificate issued by the Bureau of Labor Boiler and Pressure Vessel welders, eligible projects are as follows:焊工必須持有勞動(dòng)局頒發(fā)的鍋爐壓力容

16、器焊工考試合格證，合格項(xiàng)目如下：（1）Automatic gas shielded welding: RZ2-5、RZ2-6、RZ2-7、RZ2-8.氣體保護(hù)自動(dòng)焊：RZ2-5、RZ2-6、RZ2-7、RZ2-8.（2）Semi automatic gas shielded welding: Rb2-5、Rb2-6、Rb2-7、Rb2-8.氣體保護(hù)半自動(dòng)焊：Rb2-5、Rb2-6、Rb2-7、Rb2-8.（3）Welder certification in welding steels should 16MnR. 焊工合格證中施焊鋼種應(yīng)為16MnR.5、Welding equipment焊接設(shè)

17、備：Gas protect welding shall adopt DC-400 power、LN-9GMA wire feeding machine and Bug-o auto car.氣體保護(hù)焊選用DC-400電源、LN-9GMA送絲機(jī)及Bug-o自動(dòng)小車。4.2.Construction working condition preparation施工作業(yè)條件準(zhǔn)備1、The welding environment in any of the following conditions must adopt effective protective measures, otherwise s

18、top welding:焊接環(huán)境出現(xiàn)下列任一情況時(shí)，必須采用有效防護(hù)措施，否則停止焊接：Wind speed more than 8m/s;風(fēng)速大于8m/s；（2）Relative humidity more than 90%;相對(duì)濕度大于90%；（3）Rain and snow雨天及雪天；（4）Environment temperature under -5.環(huán)境溫度在-5以下。2、The welding environment in any of the following conditions must adopt effective protective measures, other

19、wise stop welding:施焊應(yīng)在坡口內(nèi)引弧，禁止在非焊接部位引弧。3、Ground cable, welding clamp, welding torch must be a good contact.地線、電纜線、焊鉗、焊槍必須接觸良好。4、The welded construction situation should be someone responsible for the record the ambient temperature and welded construction records.焊接施工情況應(yīng)有專人負(fù)責(zé)記錄環(huán)境溫度及焊接施工記錄。5.Construct

20、ion process施工工藝5.1Welding process焊接工藝1、Welded construction must be strictly in accordance with the welding process and welding procedures.焊接施工必須嚴(yán)格按照焊接工藝和焊接程序進(jìn)行。2、All butt weld welding weld width on each side over the edge of the groove 2mm appropriate.施焊時(shí)全部對(duì)接焊縫的焊縫寬度以每邊超過坡口邊緣2mm為宜。3、CO2 gas shielded

21、welding larger pipeline, two welder must be symmetrical, and keep pace.CO2氣體保護(hù)焊焊接較大管線時(shí)，兩臺(tái)焊機(jī)必須對(duì)稱進(jìn)行，且保持同步。4、Welding process parameter: as shown in the following table焊接工藝參數(shù)：如下表所示Table 1 Typical of different diameter wire short circuit transfer welding parameters表1不同直徑焊絲典型的短路過渡焊接工藝參數(shù)Welding wire diamet

22、er焊絲直徑mmWelding current焊接電流A100-110120-135140-180Arc and voltage電弧電壓V181920Table 2 The lower limit value and the arc voltage range in the current transition of the fine particles of the different diameter wire表2 不同直徑焊絲細(xì)顆粒過渡的電流下限值及電弧電壓范圍Welding wire diameter焊絲直徑(mm)3.04.0Welding cur

23、rent焊接電流(A)300400500650750Arc and voltage 電弧電壓(V)34-45Table 3 1.6 welding wire CO2 semi-automatics welding commonly used process parameters表3 1.6焊絲CO2半自動(dòng)焊常用工藝參數(shù)Droplet transfer mode熔滴過渡形式Welding current焊接電流AArc and voltage電弧電壓VGas-flow rate氣體流量(L/min)Application scope適用范圍Short circuiting transfer短路過

24、渡1602215-20All position welding全位置焊Fine particle transition細(xì)顆粒過渡4003920Flat welding平焊5、Multilayer welding, each weld arc starting point should turn stagger more than 50mm, the terminal should crater fill, if any, the crater defects with grinding wheel clear.多層焊時(shí)，每層焊道引弧點(diǎn)應(yīng)依次錯(cuò)開50mm以上，終端應(yīng)將弧坑填滿，如有弧坑缺陷，應(yīng)用

25、砂輪清除。6、Girth weld joints must be staggered and the longitudinal weld, the weld joint to be polished.環(huán)焊縫焊接時(shí)，接頭必須和縱焊縫錯(cuò)開，焊縫接頭要打磨。7、Each welding seam monolayer shall as far as possible once finished welding.每條焊縫單層應(yīng)盡可能一次焊完。8、Welding of welding seam T-shaped cross-site shall longitudinal welding seam weld

26、ing to the girth groove within the groove of the circular seam welding meat, then polished clean, in order to remove the defects of the weld terminal.焊縫丁字交叉部位的焊接應(yīng)將縱縫焊到環(huán)縫坡口內(nèi)，然后將環(huán)縫坡口內(nèi)的焊肉打磨干凈，以去除焊縫終端缺陷。5.2Root cleanness process清根工藝1、Back seam for root cleanness, shall be used the angle grinder to clean

27、 up may not use carbon arc gouging and flame cutting.焊縫背面如需清根，應(yīng)采用角磨機(jī)進(jìn)行清理，不得使用碳弧氣刨和氣割。2、The root cleanness excess of deposited metal shall be removed.清根應(yīng)將多余的熔敷金屬清除掉。3、After root cleanness, the shape of the groove, the width shall be consistent, root cleanness depth shall be appropriate, and be comple

28、tely rid of the roots of defects, and if necessary, root cleanness, the inspection of groove surface penetrant shall qualified before welding.清根后的坡口形狀、寬窄應(yīng)一致，清根深度應(yīng)適當(dāng)，并完全清除根部缺陷，如有必要清根后坡口表面經(jīng)滲透探傷合格后方可施焊。6.Construction attentions施工注意事項(xiàng)1、Welding operations shall strictly enforce the welding procedure, to

29、strengthen inter-layer Cleaner.焊接操作時(shí)應(yīng)嚴(yán)格執(zhí)行焊接工藝規(guī)程，加強(qiáng)層間除渣。2、A welding machine shall use a CO2 gas cylinder to ensure the supply of CO2.一臺(tái)焊機(jī)宜使用一只CO2氣瓶，以保證CO2供應(yīng)。3、Strict control CO2 water content. New refillable CO2 cylinders shall be inverted cylinders 24h, prior to use to open the valve, which let go o

30、f stagnant water, shall be replaced with a new bottle when the bottle pressure is less than 2.0Mpa.嚴(yán)格控制CO2含水量。新充裝的CO2氣瓶宜將氣瓶倒置24h，使用前打開閥門，放去其中的積水，當(dāng)瓶?jī)?nèi)壓力小于2.0Mpa時(shí)，應(yīng)更換新瓶。4、When the ring seam and longitudinal seam weld at welding, welding operation should be particularly careful. Excess weld the meat end

31、 of the longitudinal seam planning to respond to the surface for grinding carefully, in order to achieve a smooth, continuous, easy girth weld.環(huán)縫和縱縫接焊處施焊時(shí)，焊接操作應(yīng)特別小心?？v縫端部多余焊肉刨去后，應(yīng)對(duì)表面作仔細(xì)的修磨，以達(dá)到平整、連續(xù)、便于環(huán)縫焊接。5、Improve pipeline weld group on the quality of the weld their counterparts in the gap as much a

32、s possible consistent.提高管線焊縫組對(duì)質(zhì)量，使焊縫對(duì)口間隙盡量趨于一致。7.Safety housekeeping安全文明施工7.1.Safety assurance measure安全保證措施1、Before job, the carbon dioxide gas shall warm up for 15 minutes, the gas. The operator must stand on the side of the lip.作業(yè)前，二氧化碳?xì)怏w應(yīng)先預(yù)熱15分鐘，開氣時(shí)。操作人員必須站在瓶嘴的側(cè)面。2、Before the job, you shall chec

33、k and confirm the wire feed mechanism, part of the connection of the wires, carbon dioxide supply system and cooling water circulation system in line with the requirements of the welding torch cooling water system is not leaking.作業(yè)前，應(yīng)檢查并確認(rèn)焊絲的進(jìn)給機(jī)構(gòu)、電線的連接部分、二氧化碳的供應(yīng)系統(tǒng)及冷卻水循環(huán)系統(tǒng)合乎要求，焊槍冷卻水系統(tǒng)不得漏水。3、Carbon di

34、oxide gas bottles shall be placed in the shade, the maximum temperature shall not exceed 30 C, and shall be placed firmly, shall not be near heat source.二氧化碳?xì)怏w瓶宜放在陰涼處，其最高溫度不得超過30，并應(yīng)放置牢靠，不得靠近熱源。4、Voltage of the preheater end of carbon dioxide gas, and shall not be greater than 36V, after the job shal

35、l be cut off the power.二氧化碳?xì)怏w預(yù)熱器端的電壓，不得大于36V，作業(yè)后，應(yīng)切斷電源。5、Welding operation and co-ordination of labor must be required to wear protective equipment. And it must be taken to prevent electric shock, falling, gas poisoning accident and fire safety measures.焊接操作及配合人員必須按規(guī)定穿戴勞動(dòng)防護(hù)用品。并必須采取防止觸電、高空墜落、瓦斯中毒和火災(zāi)等

36、事故的安全措施。6、The field of welding machines, it shall rainproof, moisture proof, sun proof, and shall be equipped with appropriate fire-fighting equipment.現(xiàn)場(chǎng)使用的電焊機(jī)，應(yīng)防雨、防潮、防曬，并應(yīng)配備相應(yīng)的消防器材。7.2.Housekeeping 文明施工1、Construction workers, the housekeeping education, strengthen the sense of housekeeping workers.對(duì)