Inspection method of stainless steel welding process
Exterior inspection
The appearance inspection of welded joints is a simple and widely used inspection method, which is an important part of the inspection of finished products, mainly to find defects and dimensional deviations on the surface of the weld. It is generally inspected by the naked eye and by means of tools such as standard templates, gauges and magnifiers. If there is a defect on the surface of the weld, there is a possibility of defects inside the weld.
Density test
In welded containers for storing liquids or gases, the intimate defects of the welds, such as penetrating cracks, pores, slag inclusions, incomplete penetration and loose structures, can be found by compactness tests. The methods of compactness test include: kerosene test, water carrying test, water flushing test, etc.
Strength test of pressurized containers
In addition to the sealing test, the pressure vessel is subjected to a strength test. There are two types of hydraulic pressure test and air pressure test. They both verify the weld density of containers and pipes that work under pressure. The air pressure test is more sensitive and rapid than the water pressure test, and the tested product does not need to be drained, which is especially suitable for products with difficult drainage. However, the risk of the test is greater than the hydraulic test. When conducting tests, the corresponding safety technical measures must be observed to prevent accidents during the test.
Physical method test
The physical test method is a method of measuring or testing using some physical phenomena. Inspection of the internal defects of materials or workpieces is generally carried out by means of non-destructive testing. At present, non-destructive testing includes ultrasonic flaw detection, radiographic inspection, penetrant inspection, and magnetic flaw detection.
http://www.xysteelpipe.com/info/Inspection-method-of-stainless-steel-welding-process-1442-1.htm
The appearance inspection of welded joints is a simple and widely used inspection method, which is an important part of the inspection of finished products, mainly to find defects and dimensional deviations on the surface of the weld. It is generally inspected by the naked eye and by means of tools such as standard templates, gauges and magnifiers. If there is a defect on the surface of the weld, there is a possibility of defects inside the weld.
Density test
In welded containers for storing liquids or gases, the intimate defects of the welds, such as penetrating cracks, pores, slag inclusions, incomplete penetration and loose structures, can be found by compactness tests. The methods of compactness test include: kerosene test, water carrying test, water flushing test, etc.
Strength test of pressurized containers
In addition to the sealing test, the pressure vessel is subjected to a strength test. There are two types of hydraulic pressure test and air pressure test. They both verify the weld density of containers and pipes that work under pressure. The air pressure test is more sensitive and rapid than the water pressure test, and the tested product does not need to be drained, which is especially suitable for products with difficult drainage. However, the risk of the test is greater than the hydraulic test. When conducting tests, the corresponding safety technical measures must be observed to prevent accidents during the test.
Physical method test
The physical test method is a method of measuring or testing using some physical phenomena. Inspection of the internal defects of materials or workpieces is generally carried out by means of non-destructive testing. At present, non-destructive testing includes ultrasonic flaw detection, radiographic inspection, penetrant inspection, and magnetic flaw detection.
http://www.xysteelpipe.com/info/Inspection-method-of-stainless-steel-welding-process-1442-1.htm
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