CSP tunnel type roller bottom furnace bottom roller collar and preparation method thereof

A roller hearth furnace and tunnel-type technology, which is applied in the field of CSP tunnel-type roller hearth furnace roll ring and its preparation, can solve problems such as tension damage, skin tearing, meat bite, yield discount, and large consumable parts. Achieve the effect of reducing production cost, reducing replacement cycle and increasing service life

Inactive Publication Date: 2019-05-17
江苏苏冶新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The roll collar is an important part and part of the CSP tunnel-type roller hearth furnace, and it is also a relatively large consumable part. The overall material of the original design roll collar is high-chromium-cobalt alloy, and the single side of the used part is only 20mm. If it is not used, it will be directly carbon planed off during repair, and it will be treated as scrap metal and cannot be used as a new roll ring; therefore, the manufacturing cost of the roll ring is high and the comprehensive utilization rate is low.
[0003] The gap between every two existing roller rings is perpendicular to the circumference of the roller rings. At present, the existing ones are basically designed as such a parallel structure. The traditional parallel structure will cause damage, tearing, The phenomenon of biting the meat will greatly reduce the success rate of the follow-up

Method used

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  • CSP tunnel type roller bottom furnace bottom roller collar and preparation method thereof
  • CSP tunnel type roller bottom furnace bottom roller collar and preparation method thereof
  • CSP tunnel type roller bottom furnace bottom roller collar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as Figure 1-3 Shown: CSP tunnel-type roller hearth hearth roll ring, including 6 roll ring sheets 3 with the same structure, each roll ring sheet 3 includes an inner ring 1 and an outer ring 2, and the inner ring 1 and the outer ring 2 are at the junction merged with each other without separation.

[0030] The roll rings are sequentially fixed on the hearth roll body in the radial direction.

[0031] The gap between each two roll ring sheets 3 is 4 mm, and the gap forms an included angle of 60° with the shaft axis of the hearth roll.

[0032] The material of the inner ring 1 is 06Cr25Ni20, and the material of the outer ring 2 is Co50.

[0033] The effective thickness of the outer ring 2 is 20mm.

[0034] The components of the inner ring 1 are as follows: C≤0.08%; Mn≤2.00%; Si≤1.50%; Cr 24.00%~26.00%; Ni19.00%~22.00%; S≤0.030%; P≤0.035%;

[0035] The outer ring 2 components are as follows: C 0.05%~0.12%; Cr 27%~29%; Co 48%~52%; Mn: 0.5%~1%; impurities P, S≤0.02...

Embodiment 2

[0037] Example 2 Preparation method of roller ring of CSP tunnel type roller hearth furnace

[0038] First of all, molten steel is smelted, and the roll ring is cast by vacuum vertical centrifugal, and then the chemical composition analysis and UT flaw detection of the roll ring are carried out; the roll ring is solid solution; the solid solution treatment is to put the workpiece to be treated in the heat treatment furnace Heating to 1050°C, holding for 2 hours, slowly opening the furnace door gradually within 2 hours, cooling with the furnace, and then air cooling out of the furnace; roughing the crude product obtained from solid solution, and dividing it into 6 roller ring pieces 3 by wire cutting. Then continue to wire-cut each piece of roll ring with an inclined U-shaped groove; assemble the roll ring with the roll body in order and weld it, and finally finish the roll ring according to the drawing, and pack it into the warehouse after the size inspection.

[0039] The ass...

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Abstract

The invention relates to a CSP tunnel type roller bottom furnace bottom roller collar and a preparation method thereof, and belongs to the technical field of roller collar preparation. The CSP tunneltype roller bottom furnace bottom roller collar comprises six roller collar pieces with a same structure; and each roller collar piece is composed of an inner ring and an outer ring, the junctions ofthe inner rings and the outer rings are fused mutually, and no separation layer exists. An inner ring material is 06Cr25Ni20, and an outer ring material is Co50. Compared with traditional parallel, included angles formed by gaps of the roller collar pieces and furnace bottom rollers enable a red billet to smoothly pass though, no pulling loss, skin tearing, meat biting and impacting phenomena occur to the surface of the red billet, and the subsequent yield is greatly improved; and meanwhile, the impact of the roller collar from the red billet is further protected, the service life of the roller collar is prolonged, the changing period is reduced, and the production cost is reduced.

Description

technical field [0001] The invention relates to a roll ring of a CSP tunnel type roller hearth furnace bottom roll and a preparation method thereof, belonging to the technical field of roll ring preparation. Background technique [0002] The roll collar is an important part and part of the CSP tunnel-type roller hearth furnace, and it is also a relatively large consumable part. The overall material of the original design roll collar is high-chromium-cobalt alloy, and the single side of the used part is only 20mm. If it is not used, it will be directly carbon planed off during repair, and it will be treated as scrap metal and cannot be used as a new roller ring; therefore, the manufacturing cost of the roller ring is high and the comprehensive utilization rate is low. [0003] The gap between every two existing roller rings is perpendicular to the circumference of the roller rings. At present, the existing ones are basically designed as such a parallel structure. The traditio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/58B22D13/04B22D19/16F27B9/24B23P15/00
Inventor 吴海中印洁
Owner 江苏苏冶新材料科技有限公司
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