Quality control of Non-Standard Welding Parts is an important part to ensure that welded parts achieve the expected performance and meet design requirements. The following is a detailed description of the main steps and key points of quality control of Non-Standard Welding Parts:
1. Preliminary preparation
Drawing review: Review the drawings in detail to ensure that the size, shape, material, etc. of the welded parts meet the design requirements. Pay special attention to key information such as technical requirements, welding methods and welding positions on the drawings.
Material selection: Select materials that meet the standards according to the requirements of the drawings, and strictly control the quality of the materials. Ensure that the materials used are free of defects, rust, oil, etc.
2. Welding process control
Welding process formulation: Develop a detailed welding process based on the characteristics and requirements of the welded parts. Including welding methods, welding parameters (such as current, voltage, speed, etc.), welding sequence, etc.
Welding environment control: Ensure that the welding environment meets the specification requirements, such as temperature, humidity, wind speed, etc. Avoid environmental factors from causing adverse effects on welding quality
Welding operation: Welding operators should hold corresponding qualification certificates and operate strictly in accordance with the welding process. Pay attention to welding speed and welding angle to ensure weld quality.
3. Weld Inspection
Appearance inspection: Check the appearance of the weld to ensure that the weld surface is flat, free of cracks, undercuts and other defects. If necessary, grinding can be performed.
Dimension inspection: Use measuring tools to check the size of the weld to ensure that the size of the weld meets the requirements of the drawing.
Internal quality inspection: Check the internal quality of the weld by kerosene test, X-ray detection or ultrasonic detection. Ensure that there are no defects such as pores and slag inclusions inside the weld.
4. Record and document management
Welding records: Record the key parameters and operating conditions during the welding process to trace and analyze the welding quality.
Quality inspection report: Issue a quality inspection report to objectively evaluate the quality of the welded parts. If there are unqualified products, improvement measures should be proposed and quality control should be re-performed.
In summary, the quality control of Non-Standard Welding Parts requires comprehensive control from the aspects of preliminary preparation, welding process control, weld inspection, record and document management. Through strict quality control measures, it can be ensured that the quality and performance of Non-Standard Welding Parts meet the design requirements.
