Analysis Of High Precision Cold Drawn Seamless Steel Pipe

Cold drawn seamless steel pipe has the characteristics of no oxidation layer on inner and outer walls, high pressure and no leakage, high precision, high smoothness, no deformation in cold bending, no cracks in flaring, no rust treatment on the surface, and mainly used for mechanical structure.

Pneumatic or hydraulic components for hydraulic equipment and automotive motorcycles. The industrial control for the production of cold drawn seamless steel tubes includes mold design, annealing, pickling, lubrication and other conditions control, and should do a good job in the quality inspection and refurbishment of capillary tubes.

Analysis of the source of scratches on cold drawn seamless steel tubes: 1. The inner surface of the draft is not smooth, cracked or metallized. 2. The transition part of the hammerhead has angular edges and wear tools. 3 The residual iron oxide scale remains on the blank pipe of the pickled or cold drawn steel pipe. 4. When the lubricant is applied, the phosphating and saponifying processes are not properly operated. 5. The inner and outer molds have been damaged or worn seriously. 6. The intermediate annealing is uneven and the deformation is insufficient.

The method of inner and outer surface treatment of cold drawn seamless steel pipe scratches: 1. Improve the surface quality of cold drawn seamless steel pipe mold. 2, cold drawn seamless steel pipe surface oxide scale should be pickled, rinsed, the coating should be even and firm. 3. The transition part of the hammerhead should be smooth and angular. 4. Check the mold and cold-drawn seamless steel pipe surface and find out the problem in time.

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