Guide roller and preparation technique thereof

A preparation process and technology for guide rolls, applied in the manufacture of tools, roll columns, metal rolling, etc., can solve the problems of fast wear of guide rolls, affecting the production efficiency of steel rolling, and large consumption, and achieve high creep resistance and long-lasting Fatigue strength, good anti-oxidation performance, and good social benefits

Active Publication Date: 2011-07-27
HEFEI ORIENT METALLURGICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The red-hot steel above 900°C passes through the guide continuously, and at the same time it needs to be sprayed with water to cool it. Rolling

Method used

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  • Guide roller and preparation technique thereof
  • Guide roller and preparation technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0068] Example 1

[0069] A guide roller, the weight ratio of each raw material component is:

[0070] C 3.14; Si 0.81; Mn 0.45; Cr 24.27; V 0.85; Mo 0.56; W 2.03; S 0.04; P 0.03; rare earth 0.01; the balance is Fe.

[0071] The preparation process of this guide roller includes the following steps in sequence:

[0072] a. Precision casting: take each raw material and prepare the mixture according to the specified ratio, and then prepare the guide roller:

[0073] First, use low-temperature wax-based mold material to make the guide roller model, and use the silica sol-water glass composite shell making process to make the guide roller model shell. In the process of silica sol-water glass composite model shell, the guide roller First apply 2-5 layers of silica sol on the model, and then 3-4 layers of water glass steam dewaxed to obtain the guide roller model shell;

[0074] Secondly, the guide roller model shell is baked, the baking temperature is 950-1020℃, and the holding time is 40 min...

Example Embodiment

[0080] Example 2

[0081] A guide roller, the weight ratio of each raw material component is:

[0082] C 3.17; Si 0.75; Mn 0.42; Cr 24.54; V 0.89; Mo 0.93; W 2.46; S 0.04; P 0.04; rare earth 0.01; the balance is Fe.

[0083] The preparation process of this guide roller includes the following steps in sequence:

[0084] a. Precision casting: take each raw material and prepare the mixture according to the specified ratio, and then prepare the guide roller:

[0085] First, use low-temperature wax-based mold material to make the guide roller model, and use the silica sol-water glass composite shell making process to make the guide roller model shell. In the process of silica sol-water glass composite model shell, the guide roller First apply 3 layers of silica sol and 3-4 layers of water glass on the model, and after steam dewaxing, the guide roller model shell is obtained;

[0086] Secondly, the guide roller model shell is baked, the baking temperature is 950-1020℃, and the holding time is...

Example Embodiment

[0092] Example 3

[0093] A guide roller, the weight ratio of each raw material component is:

[0094] C 3.19; Si 0.50; Mn 0.40; Cr 24.17; V 0.95; Mo 0.80; W 2.40; S 0.04; P 0.03; rare earth 0.01; the balance is Fe.

[0095] The preparation process of this guide roller includes the following steps in sequence:

[0096] a. Precision casting: take each raw material and prepare the mixture according to the specified ratio, and then prepare the guide roller:

[0097] First, use low-temperature wax-based mold material to make the guide roller model, and use the silica sol-water glass composite shell making process to make the guide roller model shell. In the process of silica sol-water glass composite model shell, the guide roller First apply 2-5 layers of silica sol on the model, and then 3-4 layers of water glass steam dewaxed to obtain the guide roller model shell;

[0098] Secondly, the guide roller model shell is baked, the baking temperature is 950-1020℃, and the holding time is 40 min...

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Abstract

The invention discloses a guide roller and a preparation technique thereof. The guide roller comprises the raw material components by weight percent: 3.1-3.45% of C, 0.1-0.9% of Si, 0.1-0.4% of Mn, 0.01-0.03% of P, 0.01-0.03% of S, 24-25% of Cr, 0.4-0.6% of Mo, 0.9-1% of V, 2-3% of W, 0.05-0.1% of rare earth and the balance of Fe. The preparation technique of the guide roller comprises the steps of: firstly, making the guide roller by precision casting, treating by the guide roller by annealing, rough machining, quenching, tempering and finish machining, and obtaining the finished product. The prepared guide roller is low in cost, long in service life and good in high-temperature oxidation resistance, and has the advantages of high-temperature strength, shock resistance, high-temperature toughness and high-temperature frictional wear resistance.

Description

Technical field: [0001] The invention mainly relates to an alloy material and a processing method thereof, in particular to a guide roller and a preparation process thereof. Background technique: [0002] The guide roller is an important part of the rolling guide device for rolling steel, which is used to transport the profiles and wires to make them enter the rolling mill smoothly. The working environment is very bad. The red-hot steel above 900°C passes through the guide continuously, and at the same time it needs to be sprayed with water to cool it. Rolling production efficiency. In addition, when the guide roller is in use, it is easy to cause steel sticking, which affects the quality of rolled steel. The root cause of sticking steel is that under the high temperature, rapid cooling and rapid heating working conditions of the guide, it will weld with the red steel passing through quickly, which requires that the material of the guide roller must have high thermal stre...

Claims

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Application Information

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IPC IPC(8): C22C38/36B65G39/00B21B39/00B23P15/00B22C9/28C21D9/38
Inventor 徐庆云赵仕章张大仓华国生吴鹏曹文明吴迪张洋
Owner HEFEI ORIENT METALLURGICAL EQUIP
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