材 質(zhì)厚度寬度長度備注(W)Q690D高強(qiáng)鋼板8220010000舞鋼、黑龍江綏化當(dāng)?shù)匦落?、黑龍江綏化?dāng)?shù)貪?jì)鋼(W)Q690D10200010000舞鋼、黑龍江綏化當(dāng)?shù)匦落摗⒑邶埥椈?dāng)?shù)貪?jì)鋼(W)Q690D10220012000舞鋼、黑龍江綏化當(dāng)?shù)匦落?、黑龍江綏化?dāng)?shù)貪?jì)鋼(W)Q690D12220011000舞鋼、黑龍江綏化當(dāng)?shù)匦落?、黑龍江綏化?dāng)?shù)貪?jì)鋼(W)Q690D15220012000舞鋼、黑龍江綏化當(dāng)?shù)匦落?、黑龍江綏化?dāng)?shù)貪?jì)鋼(W)Q690D20250012000舞鋼、黑龍江綏化當(dāng)?shù)匦落摗⒑邶埥椈?dāng)?shù)貪?jì)鋼(W)Q690D22220012000舞鋼、黑龍江綏化當(dāng)?shù)匦落?、黑龍江綏化?dāng)?shù)貪?jì)鋼(W)Q690D25220012000舞鋼、黑龍江綏化當(dāng)?shù)匦落摗⒑邶埥椈?dāng)?shù)貪?jì)鋼(W)Q690D30250012000舞鋼、黑龍江綏化當(dāng)?shù)匦落?、黑龍江綏化?dāng)?shù)貪?jì)鋼(W)Q690D3522001200舞鋼、黑龍江綏化當(dāng)?shù)匦落摗⒑邶埥椈?dāng)?shù)貪?jì)鋼(W)Q690D40250010000舞鋼、黑龍江綏化當(dāng)?shù)匦落摗⒑邶埥椈?dāng)?shù)貪?jì)鋼(W)Q690D50250010000舞鋼、黑龍江綏化當(dāng)?shù)匦落?、黑龍江綏化?dāng)?shù)貪?jì)鋼(W)Q690D55240011000舞鋼、黑龍江綏化當(dāng)?shù)匦落摗⒑邶埥椈?dāng)?shù)貪?jì)鋼(W)Q690D60220012000舞鋼、黑龍江綏化當(dāng)?shù)匦落?、黑龍江綏化?dāng)?shù)貪?jì)鋼(W)Q690D70240010000舞鋼、黑龍江綏化當(dāng)?shù)匦落?、黑龍江綏化?dāng)?shù)貪?jì)鋼(W)Q690D15617575251舞鋼、黑龍江綏化當(dāng)?shù)匦落?、黑龍江綏化?dāng)?shù)貪?jì)鋼(W)Q690D80250012000舞鋼、黑龍江綏化當(dāng)?shù)匦落?、黑龍江綏化?dāng)?shù)貪?jì)鋼(W)Q690D85250012000舞鋼、黑龍江綏化當(dāng)?shù)匦落?、黑龍江綏化?dāng)?shù)貪?jì)鋼(W)Q690D90220010000舞鋼、黑龍江綏化當(dāng)?shù)匦落摗⒑邶埥椈?dāng)?shù)貪?jì)鋼(W)Q690D100220010000舞鋼、黑龍江綏化當(dāng)?shù)匦落摗⒑邶埥椈?dāng)?shù)貪?jì)鋼(W)Q690D110220010000舞鋼、黑龍江綏化當(dāng)?shù)匦落?、黑龍江綏化?dāng)?shù)貪?jì)鋼(W)Q690D120220010000舞鋼、黑龍江綏化當(dāng)?shù)匦落摗⒑邶埥椈?dāng)?shù)貪?jì)鋼

高強(qiáng)鋼板防止熱影響區(qū)的工藝措施主要是采用較小的線能量進(jìn)行焊接，減少高溫停留時(shí)間，避免鋼材高溫時(shí)間過長，引起晶粒過大，導(dǎo)致強(qiáng)度和韌性的下降；采用多層多道焊，焊道數(shù)量隨著板厚的變化而變化，進(jìn)行合理的分布。氣體流量對焊接質(zhì)量也有很大的影響，流量過大，會(huì)產(chǎn)生不規(guī)則紊流，形成氣孔缺陷，并且，由于氬氣/ 二氧化碳混合氣體的成本大大高于純二氧化碳?xì)怏w，流量過大也會(huì)提高生產(chǎn)成本；流量過小，則焊接熔池?zé)o法得到充分的保護(hù)，形成氣孔缺陷。應(yīng)適當(dāng)控制焊接速度:如果焊接速度過快，則會(huì)引起未熔合、黑龍江綏化本地氣孔等缺陷，如果速度過慢，則會(huì)加大焊接的熱輸入量，引起組織晶粒粗大，降低焊縫強(qiáng)度和韌性。有益效果:本發(fā)明與現(xiàn)有技術(shù)相比，其顯著優(yōu)點(diǎn)是:本發(fā)明可以防止焊接鋼管產(chǎn)生淬硬組織，組織晶粒過大，降低焊接應(yīng)力，減少焊接變形。