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Alloy material for ring gear for automobile synchronizer

An alloy material and synchronizer technology, which is applied in the field of metal material alloying, can solve the problems of different crystal structure and crystal morphology, different matrix strength and wear resistance, and impact on the life of the gear ring, so as to achieve good service performance and improve cutting performance. , the effect of long service life

Inactive Publication Date: 2012-08-01
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difference in the alloy matrix, crystal structure, and crystal morphology of the two solid solutions (the α phase is precipitated in the form of elongated needles, and the β phase is distributed in an irregular block shape), the solid solution characteristics are different, and the aging precipitation products are different. The matrix strength and wear resistance of the two solid solutions are different, which affects the life of the gear ring

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025]Put Cu with a mass percentage of 50% into a power frequency furnace for smelting, and after the copper starts to soften, cover a layer of charcoal on the copper surface. The amount of charcoal is 15-25kg per ton of copper. The melting temperature is 1180-1200°C. Add 4.3% Ni by mass percentage to the molten copper liquid, so that metallic nickel can be dissolved into the copper liquid through alloying. After Ni is melted, 1.1% Fe by mass percentage is added to the molten copper liquid, so that metallic iron is dissolved into the copper liquid through alloying. Add 3.5% Al and 13% Cu by mass percentage to the copper liquid; use the heat of dissolution of aluminum to melt the cold material copper to achieve the purpose of reducing energy consumption and metal burning loss. After the added Al and Cu are melted, add Zn with a mass percentage of 20% to the molten copper, and the melting temperature is 1160-1180°C; if aluminum is added first and then zinc is added, aluminum c...

Embodiment 2

[0030] Put Cu with a mass percentage of 45% into a power frequency furnace for smelting. After the copper starts to soften, cover a layer of charcoal on the copper surface. The amount of charcoal is 15-25kg per ton of copper. The melting temperature is 1180-1200°C. Add 1.1% Ni by mass percentage to the molten copper liquid to dissolve metallic nickel into the copper liquid through alloying. After Ni is melted, 0.7% Fe by mass is added to the molten copper to dissolve metallic iron into the molten copper through alloying. 2.0% Al and 11% Cu are added to the copper liquid; the heat of dissolution of aluminum is used to melt the cold material copper to achieve the purpose of reducing energy consumption and metal burning loss. After the added Al and Cu are melted, 38 mass percent Zn is added to the molten copper, and the melting temperature is 1060-1100°C. After the metal Zn is melted, add Cu-Mn and Cu-Ti intermediate alloys to the copper liquid, so that the mass percentages of...

Embodiment 3

[0035] Put Cu with a mass percentage of 50% into a power frequency furnace for smelting, and after the copper starts to soften, cover a layer of charcoal on the copper surface. The amount of charcoal is 15-25kg per ton of copper. The melting temperature is 1180-1200°C. Add 1.1% Ni by mass percentage to the molten copper liquid to dissolve metallic nickel into the copper liquid through alloying. After Ni is melted, 1.2% Fe by mass percentage is added to the molten copper liquid, so that metallic iron is dissolved into the copper liquid through alloying. Add 4.0% Al and 13% Cu to the molten copper; after the added Al and Cu are melted, add 28% Zn to the molten copper at a melting temperature of 1120-1170°C. After the metal Zn is melted, add Cu-Mn and Cu-Ti intermediate alloys to the copper liquid, so that the mass percentages of Mn and Ti in the finished alloy are 4% and 0.9%; add Si to the copper liquid to make the Si in the finished alloy The mass percentage is 0.5%; add Sn...

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PUM

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Abstract

The invention discloses an alloy material for a ring gear for an automobile synchronizer. The alloy material comprises, by mass, 51.0% to 63.0% of Cu, 0.1% to 0.9% of Sn, 0.5% to 1.2% of Ti, 0.01% to 0.08% of Zr, 0.05% to 0.08% of B, 0.02% to 0.06% of Sb, 0.2% to 4.3% of Ni, 1.0% to 5.0% of Mn, 0.5% to 1.5% of Fe, 0.3% to 1.6% of Si, 1.3% to 6.0% of Al, 0.1% to 1.0% of Pb, 0.05% to 0.20% of rare earth, impurities which are not larger than 0.05%, and the balance Zn. According to the alloy material for the ring gear for the automobile synchronizer, multi-phase and multi-scale toughness of the ring gear can be achieved through multicomponent alloying-multistage heat treatment and a high temperature solid solution-twin-stage aging process to enable rigidity of particles to optimally match with toughness of matrixes; and the ring gear can maintain good using performance and long service life under extremely severe impact conditions.

Description

technical field [0001] The invention belongs to the technical field of metal material alloying, in particular to a gear ring alloy material for an automobile synchronizer. Background technique [0002] The synchronizer ring is an important part of the automobile gearbox, which can reduce the impact, vibration and noise during the shifting process of the car, and improve the stability of the car's handling and driving safety. Since the shifting gear and the connecting gear need to be accelerated and decelerated to synchronous shifting within one to two seconds, this fast and changeable friction and stress make the tooth surface of the synchronizer under extremely harsh working conditions. The design of the gear ring material puts forward a higher standard, and high reliability and long life are the basic requirements for the design of the gear ring material. It is generally believed that the life of the gear ring depends on the wear resistance of the material, and the wear r...

Claims

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Application Information

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IPC IPC(8): C22C9/04
Inventor 贺永东杨志强
Owner JINCHUAN GROUP LIMITED
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