In view of the precision and performance of the M131 universal cylindrical grinding machine of our company's machine plus branch factory, the accuracy requirements of the product drawings have not been met. The equipment management personnel of our company decided to restructure it and reform it and then use the coarse-grained grinding wheel to carry out the repair. In the precision grinding experiment, the test piece with the surface roughness R_a0.1μm was finally ground, and the shape error was within 0.001mm. Here are a few points to talk about our experience.
LSAW pipe mill, also known as JCOE steel pipe, it has one welding seam and uses the submerged arc welding process. The specification range is from 325mm to 1420mm. When the diameter of the straight seam submerged arc welding pipe is greater than 914.4 mm, the standard stipulates that steel pipes is allowed to have two straight welding seams.
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