2 Piece Forged Wheels Technical Standard
2 Piece forged Wheels technical standard
2 forging wheel quality inspection in a sense, on the one hand is the requirements of the two forging wheel quality checks, on the other hand is to improve the direction of the forging process to ensure that the quality of two forged wheels meet the two forging wheels Technical standards, and to meet the design, processing, use of the requirements. The inspection of the quality of the two forged wheels includes inspection of the appearance quality and internal quality. Appearance quality inspection mainly refers to the two pieces of forging wheel geometry, shape, surface conditions and other items of the test; internal quality inspection is mainly refers to two forging wheel chemical composition, macroscopic organization, microstructure and mechanical properties of the project test.
Specifically, the appearance quality test of the two forged wheels is to check the shape of the two forged wheels, whether the geometric dimensions conform to the requirements of the drawings, whether the surfaces of the two forged wheels are defective, what are the defects of their properties, their morphological characteristics What is it. The surface of the test is generally check the surface of two forged wheel surface cracks, folding, wrinkling, pressure pit, orange peel, blistering, scarring, corrosion pits, bumps, foreign objects, not full, pits, missing Meat, scratches and other defects. The internal quality of the inspection is to check the inner quality of the two forged wheels itself, is the appearance of quality inspection can not find the quality of the situation, it includes both check the two wheels forging the internal defects, but also to check the mechanical properties of two forged wheels, and For important parts, key parts or large 2 forged wheels should also be tested for chemical composition. 1, due to the impact of heating medium to make two sets of forging wheel blanks caused by chemical changes in the composition of the defects, such as oxidation, decarbonization, carbon and sulfur, copper and so on.
2, caused by the abnormal changes in the internal organizational structure of the defects, such as two forging wheel overheating, over burning and not heat and so on.
3, due to the uneven distribution of the internal temperature of the blank, causing internal stress (such as temperature stress, tissue stress) is too large to produce two forging wheel blank cracking and so on. Forging processing need to pay attention to the place:
1. Forging The process includes cutting the material into the desired size, heating, forging, heat treatment, cleaning and inspection. In small artificial forging, all of these operations are carried out by a few forgons and start in a small place. They are exposed to the same harmful environment and occupational hazards; in large forging workshops, the hazards vary from job to work. Working conditions Although the working conditions vary depending on the forging form, they have some common characteristics: moderate strength labor, dry heat, microclimate, noise and vibration, air pollution by smoke.