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A method of improving the service life of rolling mill guide plate

A guide plate and life-span technology, applied in the direction of metal rolling, etc., can solve the problems that the wear resistance cannot be greatly improved, the service life of the guide plate of the rolling mill is not high, and the work efficiency is affected, so as to achieve good anti-wear performance and wear-resistant protection Sexuality, the effect of increasing the service life

Active Publication Date: 2019-10-22
LINZHOU FENGBAO PIPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the service life of the guide plate of the rolling mill is not high and the wear resistance is not good, and the damaged guide plate needs to be replaced frequently, which is troublesome and affects the overall work efficiency. wear resistance, but its overall wear resistance cannot be greatly improved. A method to improve the service life of the rolling mill guide plate is proposed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Putting the original guide plate material into the alloy furnace, the metal element Mo with a mass percentage of 0.2%, the metal element V with a mass percentage of 0.3% and tungsten carbide with a mass percentage of 0.1%, carry out an alloy reaction, and the alloy reaction temperature is 1200°C. React for 15 minutes;

[0021] 2) Put the mixed material obtained in step 1) into a 2500kW smelting furnace for smelting, and then carry out rough rolling and finish rolling in sequence, the final cooling temperature of rough rolling is 980°C, and the final cooling temperature of finish rolling is 650°C;

[0022] 3) The rolled guide plate enters the annealing furnace for annealing and cooling at a cooling rate of 25°C / s;

[0023] 4) The annealed guide plate enters the electroplating solution for electroplating, wherein, during electroplating, the cathode current density is 3A / dm2, electroplating is 15min, and the electroplating temperature is 85°C. The composition of the ele...

Embodiment 2

[0026] 1) Putting the original guide plate material into the alloy furnace, the metal element Mo with a mass percentage of 0.3%, the metal element V with a mass percentage of 0.5% and tungsten carbide with a mass percentage of 0.2%, carry out an alloy reaction, and the alloy reaction temperature is 1200°C. React for 15 minutes;

[0027] 2) Put the mixed material obtained in step 1) into a 2500kW smelting furnace for smelting, and then carry out rough rolling and finish rolling in sequence, the final cooling temperature of rough rolling is 980°C, and the final cooling temperature of finish rolling is 650°C;

[0028] 3) The rolled guide plate enters the annealing furnace for annealing and cooling at a cooling rate of 25°C / s;

[0029] 4) The guide plate after annealing enters the electroplating solution for electroplating, wherein, during electroplating, the cathode current density is 3A / dm2, electroplating 15min, the electroplating temperature is 85 ℃, the composition Cr5wt% of ...

Embodiment 3

[0032] 1) Put the original guide plate material into the alloy furnace, the metal element Mo with a mass percentage of 0.4%, the metal element V with a mass percentage of 0.7% and tungsten carbide with a mass percentage of 0.3%, carry out an alloy reaction, and the alloy reaction temperature is 1200°C. React for 15 minutes;

[0033] 2) Put the mixed material obtained in step 1) into a 2500kW smelting furnace for smelting, and then carry out rough rolling and finish rolling in sequence, the final cooling temperature of rough rolling is 980°C, and the final cooling temperature of finish rolling is 650°C;

[0034] 3) The rolled guide plate enters the annealing furnace for annealing and cooling at a cooling rate of 25°C / s;

[0035] 4) The guide plate after annealing enters the electroplating solution for electroplating, wherein, during electroplating, the cathode current density is 3A / dm2, electroplating 15min, the electroplating temperature is 85 ℃, the composition Cr8wt% of the ...

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PUM

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Abstract

The invention discloses a method for prolonging the service life of a guide plate of a rolling mill. The growth speed of crystal grains is inhibited by the addition of a metallic element Mo. A metallic element V is combined with carbon in the guide plate to form a nanoscale strong carbon compound, and the compound has an inhibition effect on the growth of the crystal grains to some extent, thus the purpose of trying to refine a guide plate material is achieved, and then the strength and toughness of the guide plate of the rolling mill are significantly improved. Meanwhile, the strength of theguide plate can be further improved by the addition of tungsten carbide, and the service life of the guide plate is prolonged. A Cr-Mn wear-resistant layer is plated on the guide plate by using an electroplating treatment process, so that the wear resistance of the guide plate can be effectively protected. The combination of the wear-resistant layer and the guide plate is facilitated by a formed Mn-Mo metallic bonding. The guide plate manufactured by the method has high strength and good wear resistance, and the service life of the guide plate is prolonged for 3-5 times.

Description

technical field [0001] The invention relates to the technical field of rolling mill guide plates, in particular to a method for increasing the service life of rolling mill guide plates. Background technique [0002] The guide plate of the rolling mill is a part that consumes a lot in the rolling mill. Especially in the medium and thick plate rolling production line, the guide plate is one of the indispensable auxiliary mechanical equipment of the rolling mill. The main function of the guide plate is to greatly reduce the impact of the rolled steel plate on the work roll of the roll. Impact and ensure the smooth bite of the steel plate to ensure the stable rolling process of the steel plate. The guide plate of the rolling mill bears a large load at high temperature and is subjected to various wear and impact. The service life of the guide plate is directly related to the production efficiency of the rolling mill and the rolling mill. Therefore, prolonging the service life of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B3/00B21B1/22C22C33/08C22C37/00C25D3/56
Inventor 高磊胡晨龙
Owner LINZHOU FENGBAO PIPE