目 錄

摘 要 1
前 言 2
1 單面焊雙面成形技術(shù)的概念 3
2 單面焊雙面成形常見的焊接缺陷 3
2.1 尺寸上的缺陷 3
2.2 結(jié)構(gòu)上的缺陷 3
2.3 性質(zhì)上的缺陷 3
3 單面焊雙面成形質(zhì)量差引起的問題 3
3.1 增加消耗，降低結(jié)構(gòu)的質(zhì)量和使用壽命 3
3.2 焊接缺陷會給結(jié)構(gòu)的安全生產(chǎn)帶來威脅，引起安全事故 3
4 單面焊雙面成形焊接質(zhì)量差的原因分析 3
4.1 焊接電源自身因素引起的焊接質(zhì)量差 3
4.2 工藝因素對單面焊雙面成形焊接質(zhì)量的影響 4
4.2.1 焊接電流 4
4.2.2 焊接速度 4
4.2.3 電弧電壓 4
4.2.4 焊接層數(shù)選擇不當(dāng) 5
4.2.5 焊條類形及焊條直徑的影響 5
4.3 操作因素 5
5 防止單面焊雙面成形焊接產(chǎn)生焊接缺陷的措施 5
5.1 作好焊前準備 5
5.2 焊接操作 6
5.2.1 選擇合適的工藝參數(shù) 6
5.2.2 焊工技術(shù)水平 6
結(jié) 論 7
參考文獻 8



Pick to: one-sided welding welding quality of double-sided forming by welding equipment, welding material process, operation of the technical level of the restrictions. This paper introduced the welding power source, welding current and welding speed, arc voltage, welding layer, welding rod type of, electrode diameter on technological factors on double-sided one-sided welding forming technology of the influence on the quality of welding and the related defects caused. Detailed analysis of the one-sided welding forming technology of poor quality of welding double-sided caused by a series of problems caused by quality and reasons of the poor, and put forward the corresponding prevention measures to solve, one-sided welding defects of the forming technology of double, double forming technology of one-sided welding perfect further, is extended, and one-sided welding forming of double-sided homework of certain guidance.

Keywords: one-sided welding forming, welding quality, double-sided, reason, measures



Lead words



Welding technology is one of the important metal processing technology, although welding technology develops very quickly, more and more is also high automation degree, but the manual arc welding is still has irreplaceable position. Especially in small diameter containers and pipe welding, one-sided welding forming the role of welding technology double-sided even more crucial. High quality one-sided welding the weld double-sided forming welding surface should be smooth transition to the mother material, the surface shall not have crack, incomplete fusion, slag, porosity, welding tumor, undercutting the weld defects such as internal also are not allowed to have defects. But the welding process because of equipment, materials, technology and operation and other reasons, make the form can not reach quality requirements, weld and on the structure of the work quality and service life of serious influence.

摘 要：單面焊雙面成形的焊接質(zhì)量受到了焊接設(shè)備、焊材工藝流程、操作技術(shù)水平的限制。本文詳細的介紹了焊接電源、焊接電流、焊接速度、電弧電壓、焊接層數(shù)、焊條類形、焊條直徑等工藝因素對單面焊雙面成形技術(shù)焊接質(zhì)量的影響和造成的相關(guān)缺陷。詳細的分析了單面焊雙面成形技術(shù)焊接質(zhì)量差所引起的一系列問題及造成質(zhì)量差的原因，提出了相應(yīng)的防止措施，解決單面焊雙面成形技術(shù)的缺陷，使單面焊雙面成形技術(shù)進一步完善，加以推廣，并對單面焊雙面成形作業(yè)具有一定的指導(dǎo)作用。
關(guān)鍵詞：單面焊雙面成形，焊接，質(zhì)量，原因，措施

引 言

焊接技術(shù)是一門重要的金屬加工技術(shù)，盡管焊接技術(shù)發(fā)展很快，自動化程度也越來越高，但手工電弧焊仍占有不可替代的地位。尤其在小直徑容器和管道的焊接方面，單面焊雙面成形焊接……
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