Rolling process shared by round hole with diameter of 5.5 and threaded hole with diameter of 6.0

Abstract

The invention belongs to the technical field of rolling a metal wire and particularly discloses a rolling process shared by a round hole with the diameter of 5.5 and a threaded hole with the diameter of 6.0. The process is provided with totally 28 rolling machines, i.e. a rough rolling machine group, a medium rolling machine group, two pre-precise rolling machine groups and a precise rolling machine group, wherein the NO.1 to NO.6 rolling machines belong to the rough rolling machine group; the NO.6 to NO.12 rolling machines belong to the medium rolling machine group; the NO.13 to NO.14 rolling machines belong to the pre-precise rolling machine group I; the NO.15 to NO.18 rolling machines belong to the pre-precise rolling machine group II; the NO.19 to NO.28 rolling machines belong to the precise rolling machine group; the rough rolling machine group, the medium rolling machine group and the pre-precise rolling machine group I are in flat vertical alternation; the pre-precise rolling machine group II is in the form of a Hafei line flat vertical alternation roll box; the Hafei imitation Morgan of the precise rolling machine group is 45 degrees. The round hole with the diameter of 5.5 and the threaded hole with the diameter of 6.0 can share the process, so that the number of spare rolls is reduced to a half, the cost is reduced, the roll replacing and groove replacing time is shortened, and the working efficiency is greatly improved. According to production practice, the production is stable, the equipment is normal, and the daily yield is over 1,400 tons.

Description

technical field [0001] The invention belongs to the technical field of metal wire rod rolling, and specifically relates to a rolling process shared by a circle 5.5 and a thread 6.0. Background technique [0002] When rolling metal wire rods, a complete set of matching rolling equipment is required, which is divided into rough rolling group, intermediate rolling group, pre-finishing rolling group, and finishing rolling group. There are more general equipment, and there are more than 20 sets of supporting equipment. Because the pass design of the original round 5.5 and thread 6.0 is not the same, a lot of time is wasted in changing rolls and slots, the work intensity of personnel is high, and the number of spare rolls is increased. In this way, when changing the product model (rolling round 5.5, thread 6.0), due to Different pass types cannot be interchanged, so the whole set of rolls and slots needs to be changed, which leads to a long delay in changing rolls and slots, incre...

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Problems solved by technology

[0002] When rolling metal wire rods, a complete set of matching rolling equipment is required, which is divided into rough rolling group, intermediate rolling group, pre-finishing rolling group, and finishing rolling group. There are more general equipment, and there are more than 20 sets of supporting equipment. Because the pass design of the original circle 5.5 and thread 6.0 is not the same, a lot of time is wasted in changing rolls and slots, the work intensity of personnel is high, and the number of spare rolls is increased, so when changing the product model (rolling circle 5.5, thread 6.0), due to Different pass types cannot be interchanged, so a whole set of rolls and slots needs to be changed, which will lead to a long delay in changing rolls and slots, increase the amount of spare rolls, and occupy production costs

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