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Deburring roller and manufacture method thereof

A burr roller and deburring technology, which is applied in the field of metallurgical cold rolling, can solve the problem that it cannot be used to remove small burrs on the edge of cold-rolled strip steel, and achieve the effects of reducing coating cracking, improving bonding strength, and reducing unit downtime.

Inactive Publication Date: 2017-05-24
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the segmented deburring roller is suitable for effectively removing the oxidized slag and burrs left over from the flame cutting of the continuous casting slab, and it cannot be used to remove the small burrs on the edge of the cold-rolled strip.

Method used

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  • Deburring roller and manufacture method thereof
  • Deburring roller and manufacture method thereof
  • Deburring roller and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The base material is GCr15 bearing steel, the taper ratio is 500:1, and the effective blank holder is 20mm. The surface treatment process is as follows:

[0044]

[0045]

[0046] The measured value of the macroscopic hardness R15N of the finished deburring roller is 83, and the measured average value of the microhardness HV0.3 hardness is 860, and it has been verified by actual use that the surface coating does not fall off. Trials were carried out on the unit, with a length of 4,400 kilometers.

Embodiment 2

[0048] The base material is GCr15 bearing steel, the taper ratio is 500:1, and the effective blank holder is 20mm. The surface treatment process is as follows:

[0049]

[0050]

[0051] The measured value of the macroscopic hardness R15N of the finished deburring roller is 86, and the measured average value of the microhardness HV0.3 hardness is 980. It has been verified by actual use that the surface coating does not fall off, so that the finished deburring roller is processed after cold rolling in Baosteel Trials were carried out on the unit, with a length of 5,200 kilometers.

Embodiment 3

[0053] The base material is GCr15 bearing steel, the taper ratio is 500:1, and the effective blank holder is 20mm. The surface treatment process is as follows:

[0054]

[0055]

[0056] According to the present invention, the measured value of macroscopic hardness R15N of the finished deburring roller is 89, the microhardness HV0.3, and the average value of hardness measurement is 1140, and it is verified by actual use that the surface coating does not fall off, so that the finished deburring roller is sold in Baosteel Trials were carried out on a cold rolling post-processing unit with a length of 5,600 kilometers.

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Abstract

The invention provides a deburring roller and a manufacture method thereof. GCr15 bearing steel is used as a base material. The deburring roller is characterized in that the deburring roller adopts taper roller type design, the taper ratio is set as 500:1 to 100:1, and effective edge pressing quantity is set as 10-30mm. Tungsten carbide powder is sprayed on workpieces which are treated by nickel flash plating, the powder components of a tungsten carbide coating consist of 10-15% of Co, 4.5-6% of C and the balance of W, and the thickness of the coating is 100-200mum. The deburring roller can effectively remove cut edge burrs at the two sides of a cold-rolled steel strip, so that the flatness of the edge parts of the steel strip is improved. The length of the whole plate can reach more than 4000 kilometers, so that unit stop caused by the change of a burr pressing roller is effectively reduced, and the production efficiency is increased. The structure of the deburring roller is simple, and the service life for removing the cut edge burrs of the cold-rolled sheet and steel strip can be prolonged.

Description

technical field [0001] The invention relates to the field of metallurgical cold rolling, in particular, the invention relates to a deburring roller and a manufacturing method thereof. Background technique [0002] Burrs are defects of cold-rolled strip steel products. If the burrs generated during the trimming process of cold-rolled strips cannot be effectively removed, defects such as scratches, roll marks, pits, and groove marks will occur on the surface of the strip steel, which will affect normal operation. use. In the cold-rolled thin steel strip, the quality requirements of the cold-rolled steel strip are very high, and the length of the burr generated on the edge is required to be no more than 1 / 10 of the plate thickness. The burrs are usually treated with deburring rollers to reduce the edge burrs of the cold-rolled sheet. [0003] The general type of deburring licker-in roller for the unit is a flat roller, and the material is usually ordinary bearing steel. Unde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D19/00B23P15/00
Inventor 朱国和周庚瑞
Owner BAOSHAN IRON & STEEL CO LTD