本文關(guān)鍵詞：國產(chǎn)Q960E鋼配套氣體保護焊實心焊絲的研制　出處：《焊接技術(shù)》2016年11期 　論文類型：期刊論文

  更多相關(guān)文章： QE鋼 焊絲研制 力學(xué)性能 微觀組織

【摘要】：為了滿足Q960E鋼焊接時對強度及沖擊韌性等性能的要求,設(shè)計了以Ni-Cr-Mo-Mn-Si-Ti為合金系的焊絲,確定了焊絲的成分,并對該焊絲的熔敷金屬性能進行測定。試驗結(jié)果表明:焊絲熔敷金屬的屈服強度與抗拉強度分別為858 MPa及933 MPa,沖擊吸收功為84 J(-40℃),各項力學(xué)性能均達到要求;焊縫熔敷金屬中擴散氫含量平均值為3.43 m L/100 g,達到超低氫標準;焊絲的飛濺率為4.6%,符合生產(chǎn)要求;焊縫熔敷金屬組織為低碳馬氏體和下貝氏體的混合組織,達到設(shè)計要求;同時利用掃描電鏡對斷口形貌進行了分析,斷口為典型的準解理形貌,斷口的延性脊保證了韌性。
[Abstract]:In order to meet the requirements of strength and impact toughness of the welding performance of Q960E steel was designed by using Ni-Cr-Mo-Mn-Si-Ti as alloy wire, wire components were determined, and the properties of deposited metal of the wire were measured. The experimental results show that the deposited metal yield strength and tensile strength were 858 and MPa 933 MPa, impact absorbing energy is 84 J (-40 C), the mechanical properties can meet the requirements; the average value is 3.43 m L/100 g hydrogen diffusion weld metal, to achieve ultra low hydrogen electrode standard; splash rate is 4.6%, in accordance with the production requirements; weld metal tissue is mixed microstructure of low carbon lower bainite and martensite, meet the design requirements; at the same time using the scanning electron microscope to analyze the fracture morphology, fracture morphology is quasi cleavage fracture ductility typical, ensure ridge toughness.

【作者單位】： 江蘇科技大學(xué)先進焊接技術(shù)省級重點實驗室;
【分類號】：TG422.3
【正文快照】： 隨著冶金技術(shù)的進步,研發(fā)出多種新型高質(zhì)量鋼,如低碳或超低碳微合金控軋控冷鋼、超低碳貝氏體鋼或超細晶粒鋼等,屈服強度級別從550 MPa提高到960 MPa,甚至1 100 MPa以上,南京鋼鐵股份有限公司開發(fā)了低合金高強鋼Q960E,該鋼具有強度高(Rp0.2≥960 MPa,Rm≥1 000 MPa)、低溫沖擊

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相關(guān)碩士學(xué)位論文 前1條

1 馬天恒;Q960E鋼氣保護焊配套實心焊絲的研究[D];江蘇科技大學(xué);2013年

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本文編號：1417843