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An alloy material for gears

A technology of alloy and content, which is applied in the field of high-strength alloy and its preparation, can solve the problems of high-rare-earth alloy application limitation and high price of alloy materials, and achieve the effect of easy large-scale production, high cost performance and low strength improvement

Active Publication Date: 2016-03-23
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the addition of a large amount of rare earth elements can greatly increase the strength of the alloy, the price of the alloy material is relatively high, and the application of high rare earth alloys is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The composition (mass percentage) of the alloy is: Cr content is 1.0%, Mo content is 0.12%, Zn content is 7.0%, Y content is 15.0%, Zr content is 0.8%, Nb content is 1.2%, and Fe is the balance. In the present embodiment, each component of the covering agent used in the alloy smelting process and its parts by weight are 4 grams of sulfur, 225 grams of diatomaceous earth, 200 grams of boric acid, and 71 grams of silica sol. The covering agent accounts for 1.0 grams of the total weight of the alloy melt. %; each component of the refining agent and its mass percentage is 750 grams of CaCl 2 , 1350 grams of KCl, 150 grams of CaF 2 , 750 grams of BaCl 2 The mixture, the refining agent accounts for 6.0% of the total weight of the alloy melt.

[0029] Weigh a total of 50Kg corresponding metal ingots and master alloys according to the above components, and put the weighed metal ingots and master alloys into an oven at 200°C for 3 hours of preheating;

[0030] First put the p...

Embodiment 2

[0037] The composition (mass percentage) of the alloy is: Cr content is 1.0%, Mo content is 0.11%, Zn content is 13.0%, Y content is 7.0%, Zr content is 1.0%, Nb content is 2.0%, and Fe is the balance. The various components of the covering agent used in the alloy smelting process and their parts by weight in the present embodiment are 7.5 grams of sulfur, 450 grams of diatomaceous earth, 225 grams of boric acid, and 67.5 grams of aluminum phosphate. The covering agent accounts for 1.5 grams of the total weight of the alloy melt. %; each component of the refining agent and its mass percentage is 750 grams of CaCl 2 , 1000 grams of KCl, 125 grams of CaF 2 , 625 grams of BaCl 2 The mixture, the refining agent accounts for 5.0% of the total weight of the alloy melt.

[0038] Weigh a total of 50Kg corresponding metal ingots and master alloys according to the above ingredients, and put the weighed metal ingots and master alloys into an oven at 180°C for 2.5 hours of preheating; ...

Embodiment 3

[0046] The composition (mass percentage) of the alloy is: Cr content is 1.4%, Mo content is 0.14%, Zn content is 7.0%, Y content is 11.0%, Zr content is 0.4%, Nb content is 0.3%, and Fe is the balance. In the present embodiment, each component of the covering agent used in the alloy smelting process and its parts by weight are 14 grams of sulfur, 840 grams of diatomaceous earth, 420 grams of boric acid, and 126 grams of silica sol. The covering agent accounts for 2.0 grams of the total weight of the alloy melt. %; each component of refining agent and its mass percentage is 1400 grams of CaCl 2 , 2520 grams of KCl, 280 grams of CaF 2 , 1400 grams of BaCl 2 The mixture, the refining agent accounts for 8.0% of the total weight of the alloy melt.

[0047] Weigh a total of 70Kg corresponding metal ingots and master alloys according to the above components, and put the weighed metal ingots and master alloys into an oven at 150°C for 3 hours of preheating;

[0048] First put the p...

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Abstract

The invention relates to a high-strength alloy. The components of the alloy and their mass percentages are: 1.0-1.5% of Cr, 0.11-0.15% of Mo, 5.0%-13.0% of Zn, 7.0%-15.0% of Y, 0.4-1.0% of Zr, 0.1 ~5.0% Nb with Fe as the balance.

Description

technical field [0001] The invention belongs to the technical field of metal materials and metallurgy, and in particular relates to a high-strength alloy and a preparation method thereof. Background technique [0002] The traditional production process of automobile transmission gear includes hot forging or cold forging of materials; cooling (air cooling or cooling at room temperature); heat treatment before processing (ISO annealing or normalizing); cutting processing (turning or milling); carburizing heat treatment; Post-processing processes (grinding, honing). Cr alloy, Cr-Mo alloy and Ni-Cr-Mo alloy steel are widely used in the production of automobile transmission gears. Because most of the alloy steel materials used for automotive transmission gears are used after carburizing heat treatment, it is best to choose alloy steel materials suitable for each process, which are inexpensive and can maintain good physical properties after heat treatment. That is to say, the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/28
Inventor 安亚君马修泉
Owner LIAONING TECHNICAL UNIVERSITY
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