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Study on the Micro Removal Process of Inner Surface of Cobalt Chromium Alloy Cardiovascular Stent Tubes

Due to the special manufacturing process of cobalt–chromium alloy cardiovascular stent tubes, there are serious surface defects in their inner walls, which affects the therapeutic effect after implantation. At the same time, the traditional processing technology cannot finish the inner wall of a car...

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Autores principales: Song, Zhuang, Zhao, Yugang, Li, Zhihao, Cao, Chen, Liu, Guangxin, Liu, Qian, Zhang, Xiajunyu, Dai, Di, Zheng, Zhilong, Zhao, Chuang, Yu, Hanlin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9501946/
https://www.ncbi.nlm.nih.gov/pubmed/36143997
http://dx.doi.org/10.3390/mi13091374
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author Song, Zhuang
Zhao, Yugang
Li, Zhihao
Cao, Chen
Liu, Guangxin
Liu, Qian
Zhang, Xiajunyu
Dai, Di
Zheng, Zhilong
Zhao, Chuang
Yu, Hanlin
author_facet Song, Zhuang
Zhao, Yugang
Li, Zhihao
Cao, Chen
Liu, Guangxin
Liu, Qian
Zhang, Xiajunyu
Dai, Di
Zheng, Zhilong
Zhao, Chuang
Yu, Hanlin
author_sort Song, Zhuang
collection PubMed
description Due to the special manufacturing process of cobalt–chromium alloy cardiovascular stent tubes, there are serious surface defects in their inner walls, which affects the therapeutic effect after implantation. At the same time, the traditional processing technology cannot finish the inner wall of a cardiovascular stent tube. In light of the above problems, magnetic abrasive finishing (MAF) equipment for the inner wall of an ultra-fine and ultra-long cardiovascular stent tube is proposed, and MAF technology is used to improve the surface quality of its inner wall. High-performance spherical magnetic abrasive powders are used to finish the inner wall of a cobalt–chromium alloy cardiovascular stent tube with an inner diameter of 1.6 mm and an outer diameter of 1.8 mm. The effects of finishing time, tube rotational speed, feed speed of the magnetic pole, MAPs filling quantity, and MAP abrasive size on the surface roughness and material removal thickness of cobalt–chromium alloy cardiovascular stent tube are investigated. The results show that the surface roughness of the inner wall of the cobalt–chromium alloy cardiovascular stent decreases from 0.485 μm to 0.101 μm, and the material removal thickness of the defect layer is 4.3 μm. MAF technology is used to solve the problem of the poor surface quality of the inner walls of ultra-fine and ultra-long cobalt–chromium alloy cardiovascular stent tubes.
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spelling pubmed-95019462022-09-24 Study on the Micro Removal Process of Inner Surface of Cobalt Chromium Alloy Cardiovascular Stent Tubes Song, Zhuang Zhao, Yugang Li, Zhihao Cao, Chen Liu, Guangxin Liu, Qian Zhang, Xiajunyu Dai, Di Zheng, Zhilong Zhao, Chuang Yu, Hanlin Micromachines (Basel) Article Due to the special manufacturing process of cobalt–chromium alloy cardiovascular stent tubes, there are serious surface defects in their inner walls, which affects the therapeutic effect after implantation. At the same time, the traditional processing technology cannot finish the inner wall of a cardiovascular stent tube. In light of the above problems, magnetic abrasive finishing (MAF) equipment for the inner wall of an ultra-fine and ultra-long cardiovascular stent tube is proposed, and MAF technology is used to improve the surface quality of its inner wall. High-performance spherical magnetic abrasive powders are used to finish the inner wall of a cobalt–chromium alloy cardiovascular stent tube with an inner diameter of 1.6 mm and an outer diameter of 1.8 mm. The effects of finishing time, tube rotational speed, feed speed of the magnetic pole, MAPs filling quantity, and MAP abrasive size on the surface roughness and material removal thickness of cobalt–chromium alloy cardiovascular stent tube are investigated. The results show that the surface roughness of the inner wall of the cobalt–chromium alloy cardiovascular stent decreases from 0.485 μm to 0.101 μm, and the material removal thickness of the defect layer is 4.3 μm. MAF technology is used to solve the problem of the poor surface quality of the inner walls of ultra-fine and ultra-long cobalt–chromium alloy cardiovascular stent tubes. MDPI 2022-08-23 /pmc/articles/PMC9501946/ /pubmed/36143997 http://dx.doi.org/10.3390/mi13091374 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Song, Zhuang
Zhao, Yugang
Li, Zhihao
Cao, Chen
Liu, Guangxin
Liu, Qian
Zhang, Xiajunyu
Dai, Di
Zheng, Zhilong
Zhao, Chuang
Yu, Hanlin
Study on the Micro Removal Process of Inner Surface of Cobalt Chromium Alloy Cardiovascular Stent Tubes
title Study on the Micro Removal Process of Inner Surface of Cobalt Chromium Alloy Cardiovascular Stent Tubes
title_full Study on the Micro Removal Process of Inner Surface of Cobalt Chromium Alloy Cardiovascular Stent Tubes
title_fullStr Study on the Micro Removal Process of Inner Surface of Cobalt Chromium Alloy Cardiovascular Stent Tubes
title_full_unstemmed Study on the Micro Removal Process of Inner Surface of Cobalt Chromium Alloy Cardiovascular Stent Tubes
title_short Study on the Micro Removal Process of Inner Surface of Cobalt Chromium Alloy Cardiovascular Stent Tubes
title_sort study on the micro removal process of inner surface of cobalt chromium alloy cardiovascular stent tubes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9501946/
https://www.ncbi.nlm.nih.gov/pubmed/36143997
http://dx.doi.org/10.3390/mi13091374
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