How to define the quality of bending machine
Time：
2022-12-05
The bending machine will have certain difficulties in bending special-shaped steel. In order to reduce unnecessary defects, it is required that the steel plate must have a 180° cold bending function, and the bending can only be performed when the pressure head is smooth; For bent plates, heating is required, and the edges and corners of the ends are smoothed before pressure testing and bending can be performed. If there is an abnormal situation, it is necessary to adjust the bending machine or the upper and lower molds, or solve it by other methods. It must be bent in strict accordance with the segmented or diameter value size of the part diagram provided by the loft, and the appropriate lower die for the bending machine should be selected according to the diameter value of the bend.
All in all, the surface of the product bent by the bending machine must not have convex and concave defects locally, and the height shall not exceed 3.0mm; after a single steel pipe is folded, the axial twist of both ends shall be ≤ 4°; , should keep the gap not 2.0mm. In order to ensure the accuracy and quality of steel plate bending, it is not only necessary to choose a matching high-quality bending machine, but also to perform bending on the premise that the steel plate remains flat.
Minimize the error of the steel plate after being bent by the bending machine, including the roundness after bending and the edge width of the polygonal steel pipe, creating a favorable premise for the overall steel pipe quality.
If the bending machine is to be bent in batches, it is necessary to test one piece and check its bending quality. The qualified bending quality should be that the roundness of the sides of the plate is smooth, and the width of the edges and corners is required for the joint of the steel pipe.
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