How to perform thermal deformation processing in sheet metal processing
Published on:
2022-01-22
Sheet metal processing is a very common metal processing method at present, which also includes many processing techniques, and thermal deformation is one of them. One of the processes that sheet metal processing plants need to pay attention to is thermal deformation treatment. Generally, this process requires good heat treatment to avoid product deformation. Let's learn how to perform thermal deformation processing in sheet metal processing!
Sheet metal processing thermal deformation treatment method
1. During the heat preservation process, the residual stress of sheet metal processing is released and deformed, and it is deformed under the action of the part's own weight. During cooling, different parts of the part have different cooling rates, so thermal stress will be generated and the parts will be deformed. Even with the same cooling rate, the cooling on the surface is always fast and the cooling on the inside is always slow. How does the sheet metal processing factory carry out thermal deformation processing.
2. The product shrinks during low temperature tempering, and the shrinkage is proportional to the supersaturated carbon content. When heated at room temperature -200, it will expand. However, since the metal decomposes around 200, the expansion doesn't change much. In conventional heat treatment, the main reasons for the shape change of parts are thermal stress and phase transformation stress generated during heating and quenching heat treatment. If the heating rate is too fast, the parts are too large compared to the furnace, and if the temperature of each part is different, the metal plate will be thermally deformed.
Matters needing attention in sheet metal processing
Key point 1
During the processing and production of sheet metal processing, employees need to learn related processing techniques to ensure the processing quality and processing accuracy of materials. People can complete the process of blanking, blanking and other processes during processing. Through these processing processes, the production purpose can be achieved. Employees usually need to pay attention to the characteristics of parameters and process methods during processing and production. These are important aspects that cannot be ignored. .
Point 2
In terms of material, check carefully, plate thickness and plate thickness tolerance, etc. For special angles, please try to bend the inner radius of the angle before determining whether to unfold. Error-prone places should be highlighted, and you should always pay attention when doing it
Key point 3
In the process of sheet metal processing, the tolerance dimensions must be reasonably considered. The negative difference goes to the end, and the positive difference goes to half; the size of the hole is opposite to the outer dimension of the tolerance; pay attention to the direction of the burr; draw a cross-sectional view along the direction of tooth extraction, riveting, tearing, punching bumps, etc.;
Key point 4
Put the enlarged picture in the place with large size to avoid leakage; please mark the place that needs to be protected by painting; the unfolding method in sheet metal processing should be reasonable, which not only saves materials but also ensures the workability; reasonable choice of clearance and edge mode, t is less than or equal to The gap of 2 is 0.2, the gap of t is less than or equal to 2-3 is 0.5, and the edging method generally wraps the short side with the long side.
The above describes how to carry out thermal deformation processing in sheet metal processing. If you want to know more, please feel free to contact us!
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