Manufacturing process for high-precision cold-drawn tube
A manufacturing process and cold-drawn tube technology, applied in the field of high-precision cold-drawn tube manufacturing process, can solve the problems of lack of detection and removal of unqualified raw materials, waste of processing resources, increase of manufacturing costs, etc., to save processing energy and manpower operations , the overall qualified rate is improved, and the effect of reducing processing costs
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[0023] Technical scheme of the present invention is further described:
[0024] A manufacturing process of high-precision cold-drawn tubes, including heating, piercing, annealing, first pickling, cold rolling, stress relief annealing, second pickling treatment, phosphating treatment, saponification treatment, cold drawing, normalizing Air cooling treatment, quenching treatment, honing, heat straightening treatment, testing, including the following steps:
[0025] (1) Heating: heat the tube blank in the ring furnace evenly;
[0026] (2) Perforation: the heat pipe blank is perforated by a perforator to obtain a steel pipe prototype;
[0027] (3) Annealing: introducing the perforated tube blank into a continuous annealing furnace for annealing to obtain an annealed tube blank;
[0028] (4) Pickling for the first pass, after annealing, the tube blank is pickled with an acidic liquid and judged by observing whether there are a large number of bubbles on the surface of the tube bl...
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