Specific operation of forging flaw
Forgings flaw detection is a very common operation, and it should be often used in reality. Next, the forging manufacturer will share with you how to use the GLMGS-3600 flaw detector to test the forging instrument for flaw detection. 1. Actual operation of forging flaw In the flaw detection of normal forgings, if the depth position of the defect is greater than 10mm, the equivalent size value of the defect can be quantified directly according to the correct AVG curve made in advance. 2. Record the defect coordinate value (X, Y) 3. When recording the coordinate values of forging X and Y, clarify the actual mark position of the forging, determine the coordinate axes of X and Y, and correctly record the coordinate values of forging X and Y. Forgings: It should be noted that you, in the process of flaw detection, the hand does not release the probe, keep the coupling of the probe and the workpiece to be measured, exert force to evenly sweep the work, and correctly record the detection data.± dB — This data may appear as + dB or dB during detection, recorded according to the actual value. After such an explanation, you now have a certain understanding of the forging flaw detection? Overheat, excessive burning and uneven temperature can easily lead to the failure of forgings, so what way to remedy it? Heating temperature is too high or high temperature stay time is too long is easy to cause overheating, too burning. Overheating significantly reduces the plasticity and impact toughness of the material. When overburned, the crystal boundary of the material violently oxidizes or melts down, completely losing its deformation ability. When the heating temperature distribution is seriously uneven, it is manifested as the temperature difference between inside and outside the forging billet, positive and negative, and along the length is too large, which causes uneven deformation in forging, eccentric forging and other defects, also known as underheat. The countermeasures are: l) Strictly implement the correct heating specifications; 2) Pay attention to the furnace installation method to prevent local heating; 3) Adjust the temperature measuring instrument, carefully heating operation, control the furnace temperature, furnace gas flow, to prevent uneven heating.
