Method for making high anti-wear corrugated roller

A manufacturing method and technology of corrugated rollers, which are applied in papermaking, papermaking, textiles and papermaking, etc., can solve the problems of easy pitting and depression, not universal application, high grinding cost, and achieve small deformation and hardenability. Good, low processing cost effect

Inactive Publication Date: 2007-04-11
GUANGTONG TECH GUANGZHOU CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Another type of tungsten carbide corrugated roller has undeniably superior wear resistance, but there are many difficulties in the application of tungsten carbide corrugated rollers: tungsten carbide corrugated rollers need 5 to 6 times of spraying to reach a thickness of about 0.1mm, and then ground and polished, The actual working thickness is 0.05-0.06mm, and the recovery rate of sprayed tungsten carbide is only about 35%. Since tungsten carbide needs to be ground and polished after spraying, and tungsten carbide is very hard, it can only be ground with diamond abrasive tools, so grinding The cost is high; in addition, the current spraying of tungsten carbide can only be carried out on the substrate below HRC45. Although the coating is wear-resistant, the substrate is soft, so it cannot withstand gravel rolling, and it is difficult to use under the condition of poor paper quality. Pockets and dents are prone to appear, so tungsten carbide corrugated rollers can only be used under the conditions of having high-end equipment and using high-grade base paper. More than 10% of them are medium and low-speed equipment, so their space in China's corrugating roll market is relatively small, even in foreign countries, it is not commonly used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] First, 60CrMnMoA is used as the material, which is processed into A-type corrugated roll blank by forging, and then quenched and tempered. The corrugated teeth are subjected to laser quenching treatment, the spot is scanned axially, the output power N of the laser is 5000W, the lens adopts a broadband integral lens, and the scanning speed is 500m / min.

Embodiment 2

[0030] 60CrNiMoA is used as the material of the corrugated roller, which is processed into a C-shaped corrugated roller blank by forging, and then quenched and tempered. The quenched and tempered hardness requirement is HRC40; The corrugated teeth of the corrugated roller are subjected to laser quenching treatment, and the laser spot is scanned axially. The output power N of the laser is 1500W. The lens adopts a broadband integral lens, and the scanning speed is 4000m / min.

Embodiment 3

[0032] First, 60CrMnMoA is used as the material, which is processed into a B-type corrugated roller blank by forging, and then quenched and tempered. Laser quenching treatment is carried out, the spot is scanned axially, the output power N of the laser is 2500W, the lens adopts a focusing lens, and the scanning speed is 600m / min.

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Abstract

The process of making high wear resistance corrugated roller includes the following steps: forging with 60CrMnMoA or 60CrNiMoA material and quenching and tempering to reach hardness of HRC 25-40; 2. heat treatment on the tooth parts of the corrugated roller; and 3. laser quenching treatment on the teeth of corrugated roller with laser through axial laser spot scanning. The present invention makes high wear resistance corrugated roller by using material with high fatigue resistance, high quenching performance, high strength and high toughness, and has short technological process and low production cost. The high wear resistance corrugated roller product has less deformation, high hardness and long service life.

Description

technical field [0001] The invention belongs to the field of laser strengthening, metallurgy and heat treatment of metal materials, in particular to a method for manufacturing high wear-resistant corrugated rolls. Background technique [0002] For any grade of corrugated board production line, corrugating rolls are always one of the most expensive wearing parts. Its economic performance and service life have always been an important topic of concern to the corrugated box industry. Improving the wear resistance of corrugating rollers and prolonging the service life of corrugating rollers is an effective way to reduce the production cost of corrugated cardboard. [0003] At present, the commonly used chromium plating process after intermediate frequency quenching, because intermediate frequency quenching is exposed heating, it is inevitable to oxidize, decarburize, and at the same time inevitably produce cracks and soft spots. Strong corrugated bottom, performance reversal o...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B31F1/20D21F11/12
Inventor马春印冯荣元
OwnerGUANGTONG TECH GUANGZHOU CITY