Research on Radial Motion Characteristic of the Cropping Hammer in Radial-Forging Cropping Method
The radial loading form applied to the bar is very important for reducing or avoiding the impact and vibration of the radial-forging cropping system and obtaining the high-quality cross section. A new radial stroke loading curve of the cropping hammer based on the cycloid form is proposed and the dy...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/675125 |
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| _version_ | 1850161759364579328 |
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| author | Lijun Zhang Shengdun Zhao Zhenwei Wang |
| author_facet | Lijun Zhang Shengdun Zhao Zhenwei Wang |
| author_sort | Lijun Zhang |
| collection | DOAJ |
| description | The radial loading form applied to the bar is very important for reducing or avoiding the impact and vibration of the radial-forging cropping system and obtaining the high-quality cross section. A new radial stroke loading curve of the cropping hammer based on the cycloid form is proposed and the dynamic model of radial stroke loading mechanism is built. With the aim of obtaining the equivalent stiffness of the bar with V-shaped notch, which is a key parameter affecting the dynamic characteristic of radial stroke loading mechanism, the analytic model of the bar is built and the simulation experiments are designed by means of the orthogonal test method. The analytical results show that the diameter of the bar has the significant influence on the equivalent stiffness of the bar. Furthermore, the equivalent stiffness of the bar with V-shaped notch can be directly calculated according to the equivalent stiffness of smooth bar when h/d<0.05 and r>0.15. By using the cycloid stroke curve, the cropping experimental results for 45 steel bars and 20 steel bars show that the radial impact and vibration of the cropping system are decreased and the bar cross-section qualities have been significantly improved. |
| format | Article |
| id | doaj-art-ff2ff31c7feb435882587d0eabddbcdb |
| institution | OA Journals |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-ff2ff31c7feb435882587d0eabddbcdb2025-08-20T02:22:44ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422015-01-01201510.1155/2015/675125675125Research on Radial Motion Characteristic of the Cropping Hammer in Radial-Forging Cropping MethodLijun Zhang0Shengdun Zhao1Zhenwei Wang2College of Electromechanical Engineering, China University of Petroleum, Qingdao 266580, ChinaSchool of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaSchool of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaThe radial loading form applied to the bar is very important for reducing or avoiding the impact and vibration of the radial-forging cropping system and obtaining the high-quality cross section. A new radial stroke loading curve of the cropping hammer based on the cycloid form is proposed and the dynamic model of radial stroke loading mechanism is built. With the aim of obtaining the equivalent stiffness of the bar with V-shaped notch, which is a key parameter affecting the dynamic characteristic of radial stroke loading mechanism, the analytic model of the bar is built and the simulation experiments are designed by means of the orthogonal test method. The analytical results show that the diameter of the bar has the significant influence on the equivalent stiffness of the bar. Furthermore, the equivalent stiffness of the bar with V-shaped notch can be directly calculated according to the equivalent stiffness of smooth bar when h/d<0.05 and r>0.15. By using the cycloid stroke curve, the cropping experimental results for 45 steel bars and 20 steel bars show that the radial impact and vibration of the cropping system are decreased and the bar cross-section qualities have been significantly improved.http://dx.doi.org/10.1155/2015/675125 |
| spellingShingle | Lijun Zhang Shengdun Zhao Zhenwei Wang Research on Radial Motion Characteristic of the Cropping Hammer in Radial-Forging Cropping Method Advances in Materials Science and Engineering |
| title | Research on Radial Motion Characteristic of the Cropping Hammer in Radial-Forging Cropping Method |
| title_full | Research on Radial Motion Characteristic of the Cropping Hammer in Radial-Forging Cropping Method |
| title_fullStr | Research on Radial Motion Characteristic of the Cropping Hammer in Radial-Forging Cropping Method |
| title_full_unstemmed | Research on Radial Motion Characteristic of the Cropping Hammer in Radial-Forging Cropping Method |
| title_short | Research on Radial Motion Characteristic of the Cropping Hammer in Radial-Forging Cropping Method |
| title_sort | research on radial motion characteristic of the cropping hammer in radial forging cropping method |
| url | http://dx.doi.org/10.1155/2015/675125 |
| work_keys_str_mv | AT lijunzhang researchonradialmotioncharacteristicofthecroppinghammerinradialforgingcroppingmethod AT shengdunzhao researchonradialmotioncharacteristicofthecroppinghammerinradialforgingcroppingmethod AT zhenweiwang researchonradialmotioncharacteristicofthecroppinghammerinradialforgingcroppingmethod |