Cold-rolled steel tube tail-cropping-free production technology
A production process and steel pipe technology, applied in the direction of metal rolling, etc., can solve the problems of increased production cycle and production cost, failure to pass the cold-rolled mandrel head, and cold-rolled production cannot be carried out smoothly, so as to improve production efficiency and save production Cost, reduction of production cycle effect
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Embodiment 1
[0034] Example 1: A cold-rolled steel pipe cutting-free production process, using MCK40 intermediate frequency furnace to process round steel with a diameter of 50mm, the length of the steel pipe is 1166mm, the underheating temperature is set to ≤1035°C, and the overheating temperature is set to ≥ 1090°C, heating power is 552kw, feed time is 240s, steel pipe tail shrinkage is 2mm.
[0035] Use iron tongs to remove the iron sheet attached to the tail of the waste pipe instead of the tail cutting process.
Embodiment 2
[0036] Example 2: A cold-rolled steel pipe cutting-free production process, the cold-rolled mandrel mold is improved to reduce the diameter of the big end of the rolled mandrel by 1 mm, and the MCK40 intermediate frequency furnace is used to process round steel with a diameter of 45 mm. The length of the steel pipe is 800mm, the underheating temperature is set to ≤1035°C, the overheating temperature is set to ≥1090°C, the heating power is 465kw, the feeding time is 240s, and the tail shrinkage of the steel pipe is 2.2mm.
Embodiment 3
[0037] Example 3: A production process of cold-rolled steel pipe without tail cutting, using MCK50 intermediate frequency furnace to process round steel with a diameter of 70mm, the length of the steel pipe is 700mm, the underheating temperature is set to ≤1035°C, and the overheating temperature is set to ≥ 1090°C, heating power is 680kw, feeding time is 336s, steel pipe tail shrinkage is 1.5mm.
[0038] Use iron tongs to remove the iron sheet attached to the tail of the waste pipe instead of the tail cutting process.
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