論船舶艙室設(shè)備底座焊接工藝規(guī)范-資料下載頁(yè)
2025-04-09 07:34本頁(yè)面
【正文】 達(dá)到要求后，開始焊接。 At first , regulate welding specification by the requirements of welding procedure ,and then to weld . CO2氣體保護(hù)焊操作要領(lǐng) Operation items for CO2 gasshielded arc welding . 焊接中，焊槍角度后仰15176?！?0176。，焊絲伸出長(zhǎng)度為（10～15）mm。 The angle of gun is 15176。～20176。backwards , dry extension of wire is 10—15 mm . 當(dāng)采用橫向擺動(dòng)運(yùn)條方法時(shí)，擺動(dòng)幅度稍大于根部間隙或前一層焊縫兩趾端，并略作停頓，以保證根部及兩趾間熔透。 When take transverse swing moving wire , the width of swing range is little bigger than gap of root or the width of layer , stopping a little time there , in order to make sure the penetration of root and edges . 中途熄弧時(shí)，必須用砂輪將弧坑打磨成圓滑過渡，再引弧繼續(xù)焊接。當(dāng)焊縫與定位焊相接時(shí)，必須將定位焊去除，然后再引弧焊接。 If you want to continue to weld from the position where you stop welding , must grind the crater making it pliable . When welds meet tack welds , remove tack welds and then to ignite .7 安全衛(wèi)生 Safety and protecting 焊接操作者必須使用面罩、安全帽、皮手套等遮光保護(hù)用具，防止灼傷和燙傷。 To prevent burning , welder must use protective things , such as : veil , cap , leathern gloves etc . 工作中，應(yīng)注意周圍環(huán)境是否有易燃易爆物品，以防止飛濺引起的火災(zāi)事故。 Spatter could cause fire , so have to check whether there are something that will be burning and exploding easily around the weldment . 狹小艙室或密閉艙室應(yīng)采取必要的通風(fēng)排氣措施。 There is a hole to make wind or gas out in narrow cabin or airtight cabin . This point is necessary . 焊接結(jié)束后，焊工需做到工完、料盡、場(chǎng)地清。 Welder should clean the working site after welding .8 檢驗(yàn) Inspecting 焊后焊縫表面用肉眼檢查，對(duì)焊縫中各種缺陷，如表面粗糙、滿溢、咬邊、氣孔、未熔合、寬度高度不足、不成形等缺陷，用氣刨刨清缺陷后，再用手工電弧焊或CO2氣體保護(hù)焊修補(bǔ) These defects like irregular surface , undercut , porosity , lack of fusion , lack of height and width , imperfect shape must be eliminated with gas—gouging ,and then to repair it with CO2 gasshielded arc welding and covered electrode manual arc welding . 焊縫內(nèi)部可用著色探傷或超聲波探傷檢查內(nèi)部有無缺陷。 May use Ultrasonic inspection and Pigmentation test to check internal defect of welds .、發(fā)電機(jī)、錨絞車、舵機(jī)基座必須進(jìn)行著色探傷或超聲波探傷，或者船東船檢認(rèn)可的檢驗(yàn)方式。 These testing way which are pigmentation test , ultrasonic test or the way approved by shipowner must be performed for the base of main engine , generator , windlass , steering gear . 當(dāng)發(fā)現(xiàn)有害的缺陷時(shí)必須鏟去，并用適當(dāng)?shù)姆椒ㄟM(jìn)行補(bǔ)焊。當(dāng)出現(xiàn)焊接裂縫時(shí)，必須查明產(chǎn)生原因，并采取必要措施。Defects found must be removed , then to repair it with proper means . For cracks , first , find out reason of causing , then take effective measures to solve it . 8 /
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