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Paper sleeve splitting method for changing diameter of steel coil

A technology of paper sleeves and steel coils, applied in the field of paper sleeve demolition, which can solve the problems of easy slipping, long time, waste of energy, etc., and achieve the effect of rapid demolition, convenient operation, and simple demolition tools

Inactive Publication Date: 2012-06-20
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The baking process needs to occupy the heating furnace to complete, which takes a long time and wastes energy, and at the same time increases the oxidation of the steel coil
When using a handle angle electric saw to saw and disassemble, because the wall of the paper sleeve is thicker and the length is 1000~1200mm, it is difficult to hold the handle electric saw and it is easy to slip, which poses a safety hazard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The coil width of the present embodiment is 1200mm, the diameter of the coiler is 510mm, and the inner diameter of the variable diameter is 610mm. According to the specifications of the steel coil, the selected paper sleeve has an inner diameter of ￠510 mm, an outer diameter of 610 mm, and a width of 1200 mm. The width of the paper sleeve can also be said to be the height or length.

[0011] On the outer wall of the paper sleeve, 3 long rectangular grooves are machined equidistantly along the width direction (axial direction) of the paper sleeve, and the size of each rectangular groove is: width×depth=10 mm×45mm.

[0012] The reducing paper sleeve is symmetrically installed on the coiler, and the steel coil is tightly coiled and unloaded.

[0013] Manually split the rectangular grooves of the paper sleeves at both ends of the steel coil one by one with a woodworking axe, and take out 3 sections of paper sleeves to realize the change of the inner diameter of the steel c...

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Abstract

The invention discloses a paper sleeve splitting method for changing the diameter of a steel coil, and is particularly suitable for changing the inner diameter of the steel coil in a cold-rolled steel coil process flow from small to large. The method is characterized in that: forming three grooves which are 45 millimeters deep and 10 millimeters wide along the outer wall of a paper sleeve in an axial direction of the paper sleeve at equal intervals; and splitting the paper sleeve at two ends of the steel coil along the groove openings by using the woodworking cutting axe. A splitting tool is simple, is easy to operate, is safe and reliable, and can quickly and forcibly split the paper sleeve and keep the original quality state of the steel coil.

Description

Technical field: [0001] The invention relates to a method for dismantling a paper sleeve that needs to be changed in steel coil production, and is particularly suitable for changing the inner diameter of the steel coil from small to large in the process flow of cold-rolled steel coils. Background technique [0002] In the cold rolling production of steel coils, according to the production process, especially for the cold rolling---annealing---pickling---leveling production process, due to the restriction of the coil diameter of the uncoiler in the process, it is forced to adopt a A production method that changes the inner diameter of steel coils. At present, domestic steel coil cold rolling production units, including some large steel mills, generally have two types of steel coil inner diameters: ￠510mm and ￠610mm, and the inner diameter of steel coils is ￠510mm. When the production line is converted, the inner diameter of the steel coil must be changed. [0003] To realize...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C47/30
Inventor 周云冰郝月明
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD