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http://dx.doi.org/10.5762/KAIS.2016.17.12.446

A Study on Implementation of Robot Overlay Welding System Based on OLP for Ball of Ball Valves  

Jang, Jae-Sung (Dept. of Mechatronics Eng, Tongmyong University)
Hwang, Seong-Hyun (Dept. of Mechatronics Eng, Tongmyong University)
Lho, Tae-Jung (Dept. of Mechatronics Eng, Tongmyong University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.17, no.12, 2016 , pp. 446-452 More about this Journal
Abstract
Recently, heat resistant super alloys (which are wear-resistant, corrosion-resistant, and heat-resistant), have been used as the basic structural material in offshore and petrochemical plants. On the other hand, making valves from very expensive, high heat-resistant alloys increases the production cost and decreases its market competitiveness. To solve these problems, the technique of overlaying only those that flow on the fluid has been used as an effective method. Nevertheless, because the former technique of overlaying the ball is performed manually, it takes too much time and perfect welding is difficult to perform. To solve this problem, this study developed a robot automation system that can make uniformly overlay welding of the ball for ball-valves. The system consists of a 6-axis welding robot with a welding torch and additional 2 axes for the rotation of positioner, the controller, and a robot path OLP (Off-Line Programming). The CAD drawing data was entered in the Off-line program to obtain the robot teaching point and drive source. Overlay welding paths were implemented using Matlab. Through an automated overlaying system that implemented the OLP, the productivity rose 2.58 times, as the amount of time required for work decreased from 88 hours to 41 hours.
Keywords
Ball valves; Ball; Off-line Programming; Overlay Welding; Welding robot; positioner; weaving;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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