The welding rod and flux used should match the material of the welded pipe, and the brand should have clear basic data, product qualification certificate and service life. Welding rods and fluxes should be dried according to the product instructions before use, kept dry during use, and used on the same day. The electrode coating should be free from peeling and cracks. The surface after honing is good, which is conducive to the storage of lubricating oil and the maintenance of oil film. The surface support rate is high, it can bear a large load, and the service life of the product is improved; the processing range is wide. Mainly process cylindrical holes. Using the honing head, it is also possible to process tapered holes, oval holes, etc. The processing precision is high, mainly for some small and medium-sized light through holes, and the cylindricity can be less than 0.001mm. The roundness of some parts with uneven wall thickness can reach 0.002mm. For large holes, the roundness can also reach 0.005mm, and the honing accuracy is higher than the grinding accuracy. The honing tube is a seamless steel tube made of seamless steel tubes for mechanical structures or hydraulic equipment. Steel pipes are cold drawn or cold rolled. Because there is no oxide layer on the inner and outer walls, no leakage under high pressure, high smoothness, no deformation and no cracks in cold bending, flaring and flattening, it is mainly used for the production of pneumatic or hydraulic products.
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