RESEARCH ON STRESS AND PRECISION CONTROL TECHNOLOGY OF WELDED STEEL PARTS
The residual stress of structural parts of welding machine tools at home and abroad was investigated. The welding bed,column and sliding saddle used in a vertical machining center were manufactured. And the tracking measurement of residual stress and deformation after welding and combined aging trea...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2021-01-01
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| Series: | Jixie qiangdu |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.05.021 |
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| _version_ | 1841535959337795584 |
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| author | WEI DongHai LI KeRui KUANG Yi CHENG Peng |
| author_facet | WEI DongHai LI KeRui KUANG Yi CHENG Peng |
| author_sort | WEI DongHai |
| collection | DOAJ |
| description | The residual stress of structural parts of welding machine tools at home and abroad was investigated. The welding bed,column and sliding saddle used in a vertical machining center were manufactured. And the tracking measurement of residual stress and deformation after welding and combined aging treatment were carried out. The results indicated that a large residual stress existed in the structural parts of welding machine tools which was over than 100 MPa. After welded,the maximum initial residual stress of the column,bed and sliding saddle reached 154. 9 MPa,274. 4 MPa and 300. 6 MPa,respectively. The maximum residual stress of the column guide rail,sliding saddle and bed respectively reached 1. 22 mm,2. 24 mm and 2. 88 mm,which approaching or exceeding yield strength of materials so that easily caused large deformation. Through the combined aging treatment of “post-welding-thermal aging-semi-finishing-vibration aging-finishing ”,the stress and deformation of the welding bed,sliding saddle and column are significantly reduced,the maximum residual stress respectively is reduced to 41. 9 MPa,39. 8 MPa and 18. 1 MPa,which all lower than 10%Rm,and the maximum straightness respectively is 36. 69 μm,23. 57μm and 19. 17 μm. After about six months,the deformation of the guide surface is 1 μm/1000 mm ～ 3 μm/1000 mm,which means good accuracy retention. The welding structure can be used for high precision CNC gold cutting machine tools and gear boxes. |
| format | Article |
| id | doaj-art-9c048836fdf24012b0755b9bc9e1d8cf |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2021-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-9c048836fdf24012b0755b9bc9e1d8cf2025-01-15T02:25:21ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692021-01-01431170117630611790RESEARCH ON STRESS AND PRECISION CONTROL TECHNOLOGY OF WELDED STEEL PARTSWEI DongHaiLI KeRuiKUANG YiCHENG PengThe residual stress of structural parts of welding machine tools at home and abroad was investigated. The welding bed,column and sliding saddle used in a vertical machining center were manufactured. And the tracking measurement of residual stress and deformation after welding and combined aging treatment were carried out. The results indicated that a large residual stress existed in the structural parts of welding machine tools which was over than 100 MPa. After welded,the maximum initial residual stress of the column,bed and sliding saddle reached 154. 9 MPa,274. 4 MPa and 300. 6 MPa,respectively. The maximum residual stress of the column guide rail,sliding saddle and bed respectively reached 1. 22 mm,2. 24 mm and 2. 88 mm,which approaching or exceeding yield strength of materials so that easily caused large deformation. Through the combined aging treatment of “post-welding-thermal aging-semi-finishing-vibration aging-finishing ”,the stress and deformation of the welding bed,sliding saddle and column are significantly reduced,the maximum residual stress respectively is reduced to 41. 9 MPa,39. 8 MPa and 18. 1 MPa,which all lower than 10%Rm,and the maximum straightness respectively is 36. 69 μm,23. 57μm and 19. 17 μm. After about six months,the deformation of the guide surface is 1 μm/1000 mm ～ 3 μm/1000 mm,which means good accuracy retention. The welding structure can be used for high precision CNC gold cutting machine tools and gear boxes.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.05.021Welding lathe bodyResidual stressPrecisionAging treatment |
| spellingShingle | WEI DongHai LI KeRui KUANG Yi CHENG Peng RESEARCH ON STRESS AND PRECISION CONTROL TECHNOLOGY OF WELDED STEEL PARTS Jixie qiangdu Welding lathe body Residual stress Precision Aging treatment |
| title | RESEARCH ON STRESS AND PRECISION CONTROL TECHNOLOGY OF WELDED STEEL PARTS |
| title_full | RESEARCH ON STRESS AND PRECISION CONTROL TECHNOLOGY OF WELDED STEEL PARTS |
| title_fullStr | RESEARCH ON STRESS AND PRECISION CONTROL TECHNOLOGY OF WELDED STEEL PARTS |
| title_full_unstemmed | RESEARCH ON STRESS AND PRECISION CONTROL TECHNOLOGY OF WELDED STEEL PARTS |
| title_short | RESEARCH ON STRESS AND PRECISION CONTROL TECHNOLOGY OF WELDED STEEL PARTS |
| title_sort | research on stress and precision control technology of welded steel parts |
| topic | Welding lathe body Residual stress Precision Aging treatment |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.05.021 |
| work_keys_str_mv | AT weidonghai researchonstressandprecisioncontroltechnologyofweldedsteelparts AT likerui researchonstressandprecisioncontroltechnologyofweldedsteelparts AT kuangyi researchonstressandprecisioncontroltechnologyofweldedsteelparts AT chengpeng researchonstressandprecisioncontroltechnologyofweldedsteelparts |