A Roll Surface Roughness Strengthening and Optimal Control Method

A roll surface optimization control technology, applied in the field of metal material surface deformation strengthening, roll manufacturing, can solve the problems of insufficient wear resistance, uneven distribution of roll surface roughness, low holding force, etc., to improve the quality of strips, Effect of enhancing roughness retention ability and wear resistance, and improving rolling quality

Active Publication Date: 2020-07-31
NANJING INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a method for strengthening and optimizing the surface roughness of rolls, which solves the problems of uneven distribution of roll surface roughness, low holding force and insufficient wear resistance in the prior art. technical problem

Method used

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  • A Roll Surface Roughness Strengthening and Optimal Control Method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Select a cast steel cylindrical hot-rolled billet with a diameter of 40 cm and a length of 100 cm. First, the surface of the billet is subjected to ultrasonic shock roughening treatment. The moving speed is 80cm / min, the single impact energy is 0.01J, the radius of curvature of the impact end is 0.1mm, the cutting amount is 0.3mm / r, the roll speed is 10r / min, and the surface roughness of the roll is about 0.05μm; secondly, the electroless plating process is used to plate Cr on the surface of the roll, and the coating is about 0.5mm; then, the Cr-plated layer on the surface of the roll is subjected to severe deformation treatment using an ultrasonic impact device, and the process parameter is that the ultrasonic impact frequency along the Z-axis direction is 100 times / second, the moving speed of the impact end along the X axis is 5cm / min, the impact energy is 0.5J; the radius of curvature of the impact end is 0.5mm; the cutting amount is 0.1mm / r, the roll speed is 2r / min,...

Embodiment 2

[0039] Select a cast iron H-type hot-rolled billet with a diameter of 40 cm and a length of 100 cm. First, the surface of the billet is subjected to ultrasonic shock roughening treatment. The speed is 80cm / min, the single impact energy is 0.1J, the radius of curvature of the impact end is 0.5mm, the cutting speed is 0.7mm / r, the roll speed is 30r / min, and the surface roughness of the roll after ultrasonic shock roughening is about 0.02 μm; secondly, use the hot dipping process to dip Al on the surface of the roll, and the coating is about 1mm; then use the ultrasonic impact device to perform severe deformation treatment on the surface of the roll coated with the Al layer, and the process parameters are: the ultrasonic impact frequency along the Z-axis direction is 1000 times per second, the moving speed of the impact end along the X axis is 20cm / min, the impact energy is 2J; the radius of curvature of the impact end is 1mm; the cutting amount is 0.2mm / r, the roll speed is 8r / mi...

Embodiment 3

[0042] Select a forged steel I-shaped cold roll billet with a diameter of 40 cm and a length of 100 cm. First, the surface of the billet is subjected to ultrasonic shock roughening treatment. The moving speed of the shaft is 40cm / min, the single impact energy is 0.03J, the radius of curvature of the impact end is 0.31mm, the cutting distance is 0.5mm / r, the roll speed is 18r / min, and the surface roughness of the roll is about The thickness is 0.04μm; secondly, the surface of the roll is coated with Ti by spraying process, and the coating is about 0.77mm; then, the Ti layer coated on the surface of the roll is subjected to severe deformation treatment using an ultrasonic impact device, and the process parameter is that the ultrasonic impact frequency is along the Z axis The direction is 230 times / second, the moving speed of the impact end along the X axis is 12cm / min, the impact energy is 1.5J; the radius of curvature of the impact end is 0.68mm; the cutting amount is 0.17mm / r, ...

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Abstract

The invention provides a control method for reinforcing and optimizing the surface roughness of a roller. The control method for reinforcing and optimizing the surface roughness of the roller comprises the following steps of surface ultrasonic impact roughening treatment, metal or alloy coating treatment, surface ultrasonic impact severe deformation treatment, metal or alloy coating treatment andsurface induction recovery treatment. According to the control method for reinforcing and optimizing the surface roughness of the roller, two different ultrasonic impact treatment processes and two same coating treatment methods are adopted, the roller grinding process can be replaced, uniform roughness distribution is achieved, lateral differential defects are reduced, an alloyed layer with gradient grain refinement is formed on the surface of the roller, the roughness holding capacity and the abrasion resistance performance are significantly improved, and quality defects of sheet strips of rolled plates are reduced.

Description

technical field [0001] The invention relates to the field of roll manufacturing and the technical field of surface deformation strengthening of metal materials, in particular to a method for strengthening and optimizing the surface roughness of a roll. Background technique [0002] The short-process continuous casting and rolling technology of strip steel has become the development trend of green steel manufacturing in the future, such as (semi) endless rolling technology, flexible rolling technology, etc. These technologies can further improve the yield of strips and the accuracy of size and shape Proportional to the ultra-thin form factor. However, the roll parts matching these advanced rolling mill equipment and high-end rolling technology are difficult to meet the requirements, especially higher requirements are put forward for the wear resistance, strength and toughness and fatigue performance of the roll. [0003] The surface roughness and performance of the roll are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B28/02
CPCB21B28/02
Inventor 毛向阳孙建宇邵黎军王章忠周军张智慧李武
Owner NANJING INST OF TECH
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