| 王祥旺， 赵健， 石铭霄， 张家葳， 王朋飞， 柳洪文.铜/钢电子束自熔焊与间隙填丝焊焊缝成形研究[J].轻工机械,2021,39(5):43-46 |
| 铜/钢电子束自熔焊与间隙填丝焊焊缝成形研究 |
| Research on Weld Forming of Copper/Steel Electron Beam Self Fusion Welding and Gap Filling Wire Welding |
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| DOI：10.3969/j.issn.1005 2895.2021.05.008 |
| 中文关键词: 电子束焊接 自熔焊 间隙填丝 焊接工艺 焊缝成形 |
| 英文关键词:electron beam welding self fusible welding gap filler wire welding process weld formation |
| 基金项目:国家自然科学基金（51905332）。 |
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| 中文摘要: |
| 由于电子束自熔焊焊接过程中焊接接头间隙适应性效果差，在焊透的情况下极易产生焊缝表面下塌等缺陷，影响焊缝的成形质量和接头力学性能。课题组采用电子束间隙填丝焊焊接方法，分别以QCr0.8和304不锈钢为母材，紫铜焊丝作为填充材料，开展了电子束自熔焊和间隙填丝焊两种焊接试验。对比两种焊接方法下的焊缝成形质量，重点揭示了电子束间隙填丝焊接头成形特点。结果表明：电子束自熔焊存在明显的焊缝表面下塌缺陷，而电子束间隙填丝焊对接头间隙适应性效果非常好，可获得成形质量良好的焊缝；可以极大地改善焊缝表面下塌缺陷。在试验参数范围内，当间隙值为1.2 mm时，电子束间隙填丝焊焊缝表面下塌量仅有0.1 mm，对应的接头最高抗拉强度为240 MPa，全面优于铜/钢电子束自熔焊接头。 |
| 英文摘要: |
| Due to the poor gap adaptability of the welding point in the process of electron beam self fusion welding, the surface collapse of welding seam is easy to occur under the condition of welding penetration, which affects the forming quality of welding seam and mechanical properties of the joint. Two welding tests of electron beam self fusion welding and gap filament welding were carried out by using the method of electron beam gap wire filling welding, using the base material of QCr0.8 and 304 stainless steel, and the filling material of copper welding wire. The weld forming quality of the two welding methods was compared, and the forming characteristics of the electron beam gap filament welding joint were mainly revealed. The results show that the electron beam self fusion welding (EBSW) has an obvious defect of seam surface collapse, while the gap filament welding has a good adaptability to the joint gap, and the weld with good forming quality is obtained, which greatly improves the defect of seam surface collapse. Within the range of test parameters, when the gap value is 1.2 mm, the surface collapse of the electron beam gap filament welding seam is only 0.1 mm, and the maximum tensile strength of the corresponding joint is 240 MPa, which is better than the copper/steel electron beam self fusion welding joint in all aspects. |
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