Analysis of Influencing Factors of Welding Quality

As a modern advanced leading manufacturing technology, welding has been gradually integrated into the main life process of products, that is, from design and development, process formulation, manufacturing and production, to operation and service, failure analysis, maintenance, recycling and other product stages. Therefore, welding has become a key manufacturing process for controlled product manufacturing, and strict whole-process control must be carried out on welding engineering. This paper analyzes the factors that affect the welding quality, so as to avoid or reduce the occurrence of welding defects and ensure the quality of welding.

(1) The influence of the size of the groove on the welding quality
Welding grooves are generally made by flame gas cutting or machining. The quality of machined grooves is good, but the cost is high, and it is limited by various factors such as the size of the workpiece and the site; flame gas cutting grooves are low in cost, convenient and easy to use and widely used. , but the quality is often unsatisfactory, so the gas cutting groove needs to be trimmed after the gas cutting is completed. No matter which method is used to prepare the groove, it should be ensured that the size of the groove is within the tolerance range. The size of the groove mainly refers to the angle of the groove and the size of the blunt edge. For U-shaped grooves, it also includes the size of the arc R.
1. Incorrect groove angle
2. Incorrect groove size
3. Choose the correct groove form
(2) The influence of joint assembly on welding quality
In the production of enterprises, the assembly of joints is generally completed by assemblers. Due to the lack of a mechanism for mutual supervision between processes, this link is often prone to problems. For welders, the most difficult thing to control is assembly. quality problems.
1. wrong side
2. Incorrect groove clearance
3. Cleaning before assembly
Welding is an important process in manufacturing, and the quality of welding determines the quality of manufacturing to a large extent. For qualified welds, one is that the performance of the joints should meet the requirements, and the other is that the welds do not have excessive defects. In the manufacturing process, as long as the welding process evaluation is strictly carried out, a reasonable welding process is formulated, a certain number of qualified welders are trained in strict accordance with the requirements of the electric welding safety operation regulations, and the welding consumables used are strictly checked and accepted, received and distributed, and baked, etc., Strict process discipline during the welding process, welding according to process requirements, and strict inspection of welding quality after welding can completely control the welding quality.