检索结果-南通市图书馆

The Application of automatic welding in Mechanical welding

在线全文

学校读者我要写书评

暂无评论

International Journal of Technology Management 2015年第6期 42-43页

作者： Qianjin TUO Hunan Mechanical Electrical Polytechnic Hunan changsha 410151

With the development of science and technology, automation technology has begun to be applied to various fields. automatic welding technology is increasingly used in the welding industry in the area. The introduction of automatic welding technology not only improve the quality and production efficiency, but also reduce production costs, the production environment in which the staff has also been improved. This paper discusses the current situation of automatic welding technology, mechanical industry, the demand for automatic welding, automatic welding technology advantages and development trends.

关键词： automatic welding Mechanical welding welding Technology Application

automatic girth welding and performance evaluation of the joints of hot-induction-bend and line pipes with different wall thickness

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Baosteel Technical Research 2018年第2期12卷 17-24页

作者： CAO Neng Research Institute Baoshan Iron & Steel Co.Ltd.

During the process of laying long-distance oil and gas transmission pipelines, the hot-induction-bend method is extensively used when the direction has to be changed. By considering the pipeline＇ s ongoing processing and loading states during service, the pipeline that is generally used exhibits thicker walls than those that are observed in the line pipe. As such, during pipeline construction, hot-induction-bend and line pipes with different wall thickness are girth-welded. The chemical composition of hot-induction-bend and line pipes differs, with the carbon content being particularly higher in the hot-induction-bend pipe;it also depicts a higher carbon equivalent, which makes it possible to modify the girth of the pipe. In this study, using Baosteel＇ s standard X70M UOE hot- induction-bend and line pipes, solid-wire automatic gas-metal-arc girth welding was performed and the performance of the girth-welded joint was evaluated. Furthermore,the weldability of the pipeline girth and the microstructure of the girth-welded joint were analyzed. The results reveal that Baosteel＇ s standard UOE hot-induction-bend and line pipes exhibit good girth weldability, and their technical quality can be guaranteed in case of consumer field- construction applications.

关键词： X70M hot induction bend line pipe unequal wall thickness automatic welding GMAW

FLEXIBLE MAGNETIC WHEEL TYPE INTELLIGENT welding ROBOT FOR SPHERICAL TANK

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2002年第2期15卷 173-176页

作者： Jiang Lipei Jiao Xiangdong Xue Long Ma Hongze Li Mingli Yang Zhaochun Department of Mechanical Engineering, Institute of Petro-chemical Technology,Beijing 102600, China 北京石油化工学院北京 102600

An intelligent welding robot for spherical tank's all-position multi-layerwelds is developed. Based on the dynamics analyzing and simulation testing, a flexible magneticwheel mechanism is created as the robot's walking carriage. It makes the robot directly attracted tothe surface of the spherical tank so as to realize the all-position walking and welding withoutrail. At the same time, a CCD real-time tracing system is developed for the robot to repeatedlytrace the all-position and multi-layer seams. The welding tests show that the welding robot can makethe all-position and multi-layer welds with high tracing accuracy, excellent quality and reliablebehavior, and it can be applied for practical production.

关键词： welding robot All-position welding automatic welding Spherical tank

Evaluation of automatic girth weldability of pipeline in special conditions

在线全文

学校读者我要写书评

暂无评论

Baosteel Technical Research 2021年第2期15卷 1-10页

作者： LIU Shuo Research Institute Baoshan Iron&Steel Co.Ltd.Shanghai 201999China

To meet the requirements of pipeline consumers abroad,in this study,an automatic gas metal arc welding type of girth welding was performed with a heat input of no more than 0.25 kJ/mm and high-strength solid-wire matching for an X70M large-diameter UOE *** integral evaluation of the X70M pipeline girth weldability was performed with respect to the girth-weld cold-cracking sensitivity during the welding process and the strengthening,hardening,and embrittlement of the girth weld joint after girth welding in especially rigorous welding conditions with accelerated failure *** performance of the above girth weld joint with joints welded using the main construction-field girth welding procedure was compared to ensure the good girth weldability of the X70M *** results of this study have important supervisory significance for field-construction girth ***,the girth weldability of the X70M pipeline was found to satisfy the field construction requirements even when the welding conditions are especially rigorous.

关键词： pipeline X70M special condition automatic welding girth weld joint weldability