Roller surfacing technology

A roll and process technology, which is applied in the field of welding processing, can solve the problems of long consuming cycle, cumbersome process steps, and failure to further improve the performance of the roll, so as to prolong the service life, improve efficiency, improve hardness and wear resistance. Effect

Inactive Publication Date: 2017-08-18
ANHUI REMFG ENG DESIGN CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing roll surfacing process realizes the repair of the size of the worn part of the roll, due to the unreasonable arrangement of steps, the performance of the roll after surfacing cannot be further improved, and the hardness and wear resistance cannot be effectively improved. The process steps are relatively cumbersome, and the roll surfacing takes a long time. Therefore, a new roll surfacing process is urgently needed to realize the repair and recycling of the roll.

Method used

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Embodiment Construction

[0023] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elaborated below.

[0024] A roll surfacing process, the process steps are as follows:

[0025] The first step, pre-welding inspection: check whether the size of the roll and the base metal meet the requirements of the incoming sample; check with the naked eye whether there are cracks, pores, inclusions and other defects that affect the surfacing construction, so as to ensure the quality of welding;

[0026] The second step, preheating before welding:

[0027] a) Check whether the electrical equipment of the heat treatment furnace is normal and whether the mechanical seal is intact;

[0028] b) preheating;

[0029] The third step, surfacing processing:

[0030] a) After the workpiece is hoisted from the preheating furnace and comes out of the furnace hopper, the workpiece starts to be welded, and genera...

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PUM

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Abstract

The invention relates to a roller surfacing technology. The roller surfacing technology comprises the steps of firstly, checking before welding; secondly, preheating before welding; thirdly, performing surfacing machining; and fourthly, performing post-weld heat treatment. The roller surfacing technology has the advantages that a worn part of a roller can be repaired, meanwhile, the hardness and the wear resistance of the roller can be greatly improved, and therefore the service life of the roller can be prolonged, and the roller surfacing efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of welding processing, in particular to a roller surfacing welding process. Background technique [0002] The surfacing roll refers to the manufacture or repair of the roll with various surfacing methods on the roll core with better toughness. It is one of the production methods of composite rolls. At the same time, it can be surfacing many times to make it reused. It is a powerful measure to prolong the life of the rolls, improve the operating rate of the rolling mill and the quality of the rolled products. Although the existing roll surfacing process realizes the repair of the size of the worn part of the roll, due to the unreasonable arrangement of steps, the performance of the roll after surfacing cannot be further improved, and the hardness and wear resistance cannot be effectively improved. The process steps are relatively cumbersome, and the roll surfacing takes a long period. Therefore, a new roll s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00
CPCB23P6/007
Inventor 程敬卿周乾坤
Owner ANHUI REMFG ENG DESIGN CENT
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