Welding work organisation in serial production
2021
Verdins, G., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Elere, K., Bucher Municipal, Ltd., Ventspils (Latvia)
The paper analyses the course of welding work in conditions when products of different sizes, shapes and complexity are made in small batches. Research has been carried out to find the individual professional skills and abilities of welders in manufacturing parts with the MAG technology. Video recordings of the production process of various standard parts were recorded and analysed. The aim is to find the possibilities to increase the production productivity by increasing the production intensity. The possibility to increase the productivity has been tested, taking into account the skills and abilities of welders in performing certain elements of the welding technology and rational use of the working time. To determine the professional skills and abilities of welders, a test is used, the task of which is to find the skills of each individual in forming seams, welding, performing auxiliary work related to welding and ensuring the quality of welds. The test results are compiled and used to create standard part manufacturing modes. The results of the observations were used to determine the time capacity of the welding work elements and to model the course of welding work. The test results show that the abilities of welders to produce the product are very different. The fastest welder in the test group takes twice as much time to weld a part as the slowest. The amount of wasted time in some cases is 30% of the product’s manufacturing time. For welding long seams, it is desirable to assign welders with good skills to form the seams. Sewage treatment should be entrusted to less qualified personnel or machinery. By modelling the welding process, it has been found that by properly organizing the production, the work intensity for the tested contingent can be increased by 1...8%.
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