Process for roller shaft neck abrasion repairing and complete equipment for process

A technology of wear repair and complete set of equipment, which is applied in the direction of metal material coating process, coating, etc., can solve the problems of not being perfect, reducing the strength of the journal, consuming a lot of manpower and material resources, etc., to achieve convenient support, avoid cracks, avoid Shedding effect

Active Publication Date: 2017-08-11
南通德元机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, this process is complex, and it is difficult to meet the requirements for roller journal repair, and the wear thickness of the journal varies, and the shape of the prepared sleeve is difficult to design. In addition, the sleeve needs to be made smaller, which will reduce the strength of the journal. It is difficult to guarantee the service life after repair, and there are safety hazards in the process of use
At the same time, the equipment for repairing the roller journal is not very perfect, which often consumes a lot of manpower and material resources

Method used

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  • Process for roller shaft neck abrasion repairing and complete equipment for process
  • Process for roller shaft neck abrasion repairing and complete equipment for process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The process used for roll journal wear repair includes the following steps:

[0040] a. Pretreatment: Degrease and derust the worn surface of the journal of the roller shaft, measure the size of the worn part of the journal, the size after the test is φ159.2mm, and the original size of the journal is The wear amount on one side of the diameter is 0.4-0.5mm, and a layer of laser cladding is applied.

[0041] b. Placement: According to the length of the roller shaft, adjust the roller table to a suitable distance to facilitate tooling, and hang the roller shaft on the complete set of equipment.

[0042] c. Cladding: Use a high-power semiconductor laser to clad wear-resistant alloy powder on the surface of the wear journal. The size of the wear-resistant alloy powder particles is 100-325 mesh. Its composition by weight percentage is as follows:

[0043] Carbon 0.4%, chromium 15%, nickel 5%, tungsten 2%, cobalt 14%, molybdenum 2%, silicon 1.2%, boron 1.2%, and the rest...

Embodiment 2

[0057] The process used for roll journal wear repair includes the following steps:

[0058] a. Pretreatment: Degreasing and derusting treatment on the worn surface of the journal of the roller shaft,) measuring the size of the worn part of the journal, the journal wears irregularly, the size is φ137.6-φ139.5mm, and the original size of the journal is The wear on one side of the diameter is 0.25-1.2mm, and the number of layers of laser cladding is different in different parts.

[0059] b. Placement: According to the length of the roller shaft, adjust the roller table to a suitable distance to facilitate tooling, and hang the roller shaft on the complete set of equipment.

[0060] c. Cladding: Use a high-power semiconductor laser to clad wear-resistant alloy powder on the surface of the wear journal. The size of the wear-resistant alloy powder particles is 100-325 mesh. Its composition by weight percentage is as follows:

[0061] Carbon 0.2%, chromium 14%, nickel 7%, tungsten...

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PUM

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Abstract

The invention provides a process for roller shaft neck abrasion repairing and complete equipment for the process, and belongs to the technical field of machines. The problem that in the prior art, the roller shaft neck abrasion repairing effect is poor is solved. According to the process for roller shaft neck abrasion repairing and the complete equipment for the process, the process comprises the following steps of a, pretreatment, b, placement, c, fusion covering, d, checkout, e, annealing treatment and f, gold machining treatment on a roller shaft is carried out. The complete equipment comprises a base, a first roller, a second roller and a semiconductor laser used for roller shaft neck abrasion repairing. The process and the complete equipment have the beneficial effects that the roller shaft neck surface strength and abrasive resistance are improved, and roller shaft neck abrasion repairing is more convenient and quicker.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a process for repairing wear and tear of a journal of a roller shaft and a complete set of equipment thereof. Background technique [0002] In the manufacturing industry, the roll shaft is one of the essential key accessories, such as guide rolls, breast rolls, press rolls, couch rolls, press rolls, roll rolls, etc. Roll journal wear is the most common and serious problem in the manufacturing industry. The main reason is that the entire roller shaft is supported by bearings at the left and right ends, and the journal is subjected to strong compressive stress and torsional bending stress. The roller shaft is heavy and long. Under the condition of high temperature or lack of lubrication, the bearing is easily damaged and wears out the roller shaft. [0003] The traditional repair methods mainly include: electric brush plating or spraying, inlaid bushing, gold processing after elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C38/44C22C38/52C22C38/54
CPCC22C38/44C22C38/52C22C38/54C23C24/106
Inventor 黄晓刚刘丽娜刘婷娜吕梅蕾张栋梁汤剑周翔
Owner 南通德元机械制造有限公司
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