How to check the quality of weapon forgings? What are the common detection methods?”

There are several commonly used methods for the quality inspection of weapon forgings:

Visual inspection method: In the production site, especially in the inspection of the process, it is often too late to check the forgings one by one, in order to make the quality problems found in the production in time, it is necessary to have a lot of practical experience workers to visually test the quality of the forgings. The content of visual inspection includes the surface quality of the forging, such as cracks, cracks, inclusions, heavy skin, pits, etc., as well as the shape and position size of the forging, such as Angle edge, distortion, error of the die forging.

Measuring tool inspection method: In forging production, it is necessary to check the shape and position size of the forging, then it is necessary to rely on universal measuring tools such as steel ruler, inner and outer calipers, vernier height ruler, vernier depth ruler and 90° Angle ruler.

Sample test method: For large quantities of forgings and forgings with complex multi-angle bending, samples and local samples are often produced in advance to check the shape and position size.

Marking test method: some forging shape is complex, so that the measuring tool and even the template can not be tested, then only the marking method can be used to test the size and shape dislocation of the forging.

Magnetic particle test method: widely used to check the surface or near-surface defects of ferromagnetic metal or alloy forgings, such as cracks, white spots, hair lines, delamination, non-metallic inclusions, etc. This method is only applicable to the inspection of ferromagnetic forgings.

Penetration inspection method: In addition to checking magnetic forgings, it can also check the surface defects of non-ferromagnetic forgings, such as cracks, porosity, folding, etc., generally only used to check the surface defects of non-ferromagnetic forgings, and can not find the defects of internal structure.

Eddy current test method: used to check the surface or near surface defects of conductive materials.

Ultrasonic inspection method: used to check the forging internal defects such as shrinkage holes, white spots, heart cracks, slag inclusion, etc. Although the method is convenient, fast and economical to operate, it is difficult to accurately determine the nature of the defects.

Physical and chemical inspection method: The internal quality and mechanical properties of forging need to use various physical and chemical analysis methods.

These are some common weapon forging quality inspection methods.