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Corrugated roller surface reinforcement modifying method and manufacturing process

A technology of surface strengthening and corrugated rollers, which is applied in the direction of metal material coating process, coating, solid diffusion coating, etc., can solve the problems of short service life and poor wear resistance

Inactive Publication Date: 2007-01-10
翟兰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to overcome the disadvantages of poor wear resistance and short service life of existing corrugating rollers, the present invention provides a method for strengthening and modifying the surface of corrugating roller teeth. This method can not only greatly improve the hardness of the surface of corrugating roller teeth, Moreover, it can also greatly improve the anti-rust performance, and at the same time, this method can also make the surface of the corrugated roller teeth have a certain self-lubricating performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: The material of the corrugated roll in this example is 38CrMOAl hot-rolled seamless steel pipe, the outer diameter of the material is φ426mm, the length L=2020mm, and the diameter of the corrugated roll made is φ405mm. The material composition and weight content in the supply material certificate are: C 0.40%, Si0.40%, Mn 0.52%, Mo 0.23%, Cr 1.60%, Al 1.06%, the rest is iron and unavoidable impurities, and laboratory analysis The results are consistent. According to the process steps of the present invention, the raw materials are heat-treated and tempered, turned to length, welded to the shaft head, stress-relieved annealed, rough-machined, gear-planed, and tooth profile finely ground, followed by final surface-strengthening modification. The specific method of its surface strengthening is:

[0021] 1. Clamping: Due to the large size and heavy weight of the workpiece, firm clamping is the safety guarantee for the implementation of this process;

[0022]...

Embodiment 2

[0031]Embodiment 2: The corrugated roll material used in this example is 42CrMo precision forged pipe, the material composition and weight content are: C 0.41%, Si 0.36%, Mn 0.68%, Mo 0.24%, Cr 1.16%, and the rest are iron and unavoidable of impurities. Using exactly the same process method as in Example 1, a surface-enhanced hardened layer was also obtained. It is tested that the surface hardness of the tooth is Hv0.1690, which is slightly lower than that of Example 1, and also has good wear resistance and corrosion resistance.

[0032] Comparing the above two examples, we can draw the following conclusions: the corrugated roll surface strengthening modification method of the present invention is effective for almost all steel types, and the steel containing a certain amount of Cr, MO, Al, Ti has a better effect, especially Al can significantly improve the surface hardness, so 38CrMoAl is one of the most effective material choices in the present invention.

[0033] ...

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PUM

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Abstract

The invention discloses a surface intensifying modification method for alloy corrugated roller that includes the following steps: taking nitrogen-carbon salt bath co-infiltrating to enrich nitrogen on metal surface to form epsilon phase iron-nitrogen compound layer and nitrogen diffused layer, taking washing and polishing to the component; and taking salt bath oxidation to make the infiltrated nitrogen cover oxide layer on organize layer surface. It also discloses the manufacture technology for the corrugated roller and the raw material. After taking surface intensifying modification process to the surface, the corrugated roller would have superior abrasion resistant, corrosion proof and high temperature resistant ability; it obviously prolongs the useful life and quality of corrugated roller. The cost is lowered, and the energy consumption is saved.

Description

Technical field [0001] The invention relates to a method for surface strengthening modification of an alloy corrugated roll and a manufacturing process thereof. Background technique [0002] The corrugating roller is the most important working part on the single face corrugating board machine. In the production process of corrugated cardboard, the heated and dried corrugated base paper is sent to the middle of the upper and lower corrugated rollers at high speed for rolling and bonding to form corrugated cardboard. Due to the high working temperature of the corrugating roller, the temperature of the cylinder is generally heated above 200°C; the corrugated tip is narrow; the relative movement is fast, and the running speed of some advanced high-speed production lines even reaches 300M / MIN; it is in a state of dry friction without lubrication Continuous operation, especially the more or less sand in the corrugated base paper leads to severe wear of the corrugating roller teet...

Claims

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Application Information

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IPC IPC(8): C23C8/00C23C8/40C23C22/72
Inventor 姚松柏翟兰
Owner 翟兰
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