Shuoke Environmental Protection Engineering Equipment (Suzhou) Co., Ltd.'s Quality Requirements for Welders
Release time:2024-04-15
For on-site manual welding and machine welding exams, quality requirements are the key to ensuring that the welding process meets relevant standards and achieves the expected welding quality. The following is an expansion of the quality requirements for these two welding methods in the exam:
For on-site manual welding exams, the quality requirements are mainly reflected in the following aspects:
Firstly, the welded joint should be complete, without defects such as cracks, lack of fusion, slag inclusion, weld nuggets, undercutting, burn through, arc craters, and needle like pores. These defects may affect the strength and sealing of the welded joint, so they must be strictly avoided.
Secondly, the size and shape of the weld seam should comply with the requirements of the drawings and process documents. The height of the weld seam should not be lower than the surface of the base metal, and the transition between the weld seam and the base metal should be smooth. This can ensure the load-bearing capacity and service life of the welded joint.
In addition, there should be certain requirements for the appearance quality of the weld seam. The weld seam should have a uniform fish scale shape, with a silver white or golden color. There should be no harmful defects such as overburning, incomplete penetration, welding leakage, surface slag inclusion, arc pits, cracks, etc. At the same time, the joint must not have sharp shape changes, and the corners should have smooth transitions。
In the machine welding exam, the quality requirements are equally strict. Due to the higher automation and precision of machine welding, its quality requirements are often higher.
Firstly, the welds produced by machine welding should be more uniform, continuous, and free from significant fluctuations or abrupt changes. This requires machines and equipment to have stable performance and precise control systems.
Secondly, machine welding also has higher requirements for the strength and sealing of welded joints. This requires precise control and optimization of welding parameters, such as welding current, voltage, speed, etc.
In addition, machine welding should also consider production efficiency and cost control. Through reasonable process design and equipment selection, efficient, stable, and low-cost welding production can be achieved.
Overall, whether it is on-site manual welding or machine welding exams, meeting quality requirements should be the primary goal. Through strict examination procedures and standards, welding workers can be ensured to possess qualified welding skills and qualities, providing strong support for the welding production of enterprises.