Production process for preparing cold-rolled thin-wall sleeve

A production process and thin-wall sleeve technology, applied in the field of cold-rolled sleeves, can solve the problems of low production efficiency, difficult processing, high raw material cost, etc., and achieve the effects of high production efficiency, low production cost and low processing cost

Inactive Publication Date: 2020-01-03
唐山曹妃甸工业区长白机电设备检修有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Cold heading and reaming of seamless pipes are used to make cold-rolled sleeves. The cost of raw materials is not only high, but also the processing is difficult and the production efficiency is low.

Method used

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  • Production process for preparing cold-rolled thin-wall sleeve
  • Production process for preparing cold-rolled thin-wall sleeve
  • Production process for preparing cold-rolled thin-wall sleeve

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Experimental program
Comparison scheme
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specific Embodiment approach 1

[0037] Specific embodiment one: combination Figure 1-5 As shown, a production process for preparing cold-rolled thin-walled sleeves is characterized by: including: uncoiler 1, conveying roller 2, shearing machine 3, special leadless two-roller coiling machine 4, special straight seam Automatic welding machine 5, self-made hydraulic calibration machine 6, automatic polishing machine 7, steel strip 8 and sleeve 9; the processing steps of preparing cold-rolled thin-wall sleeve 9 are as follows:

[0038] i) Selection of raw materials, material Q345-B, cold-rolled sheet with thickness 3-8mm, tensile strength of material 550-600 Mpa;

[0039] j) Blanking: Uncoiler 1 feeds and adopts shear 3 for blanking, controlling blanking tolerance, length and width tolerance ≤ 1.5mm;

[0040] k) Rolling plate: use a special headless two-roller plate rolling machine with 4 rolls;

[0041] l) Automatic welding: use a dedicated straight seam automatic welding machine 5 to surfacing butt weld 901;

[0042] ...

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Abstract

The invention relates to the technical field of cold-rolled sleeves, in particular to a production process for preparing a cold-rolled thin-wall sleeve. According to the production process, a cold-rolled sheet comprising Q345-B material is used as a raw material to replace a traditional seamless steel pipe, so that the raw material cost is greatly reduced, and the production cost of the cold-rolled sleeve is reduced; the cold-rolled sleeve is manufactured through a flow production line of sheet cutting, sheet rolling, welding, calibrating and polishing instead of a traditional seamless pipe cold heading and reaming process, and the production efficiency is greatly improved; a special straight seam automatic welding machine and an automatic polishing machine are arranged into a whole, the polishing machine in the rear polishes a welding seam of a welding head for the first time when the welding head is welded, and when the welding head is reset, the polishing machine resets at the sametime to polish the welding seam of the welding head for the second time; and a self-made hydraulic calibrating machine and a special seedless two-roller sheet rolling machine are arranged into a whole, the sheet rolling and the calibrating are carried out in sequence, and the sleeve does not need to be transferred and machined for the second time.

Description

Technical field [0001] The invention relates to the technical field of cold-rolled sleeves, in particular to a production process for preparing cold-rolled thin-walled sleeves. Background technique [0002] There are 3 cold-rolled lines in Jingtang, and the annual demand for cold-rolled sleeves is more than 40,000 pieces. According to the estimation of Jingtang's demand status, 25% of them are suitable for new sleeves as cores, and the total is expected to be about 10,000 pieces per year. Based on the existing scale of Jingtang, the Qiangang and Shunyi cold rolling plants in Shougang's system have similar products, and the demand is expected to reach 30,000 pieces per year. [0003] Existing products are made by seamless steel pipe + cold heading and reaming process, using seamless steel pipes of similar specifications, the inner hole passes through a specific tooling, and after reaming with a press to reach the finished size, it is used directly. The production efficiency is low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 由明炜陈长才李鹏瑞
Owner 唐山曹妃甸工业区长白机电设备检修有限公司
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