High-strength aluminum alloy profile for brake chamber and processing technology of high-strength aluminum alloy profile

A technology of aluminum alloy profiles and brake chambers, applied in the field of mechanical parts processing, can solve problems such as wear resistance, poor corrosion resistance, low strength level, delayed fracture, etc., and achieve good wear resistance and strong corrosion resistance Effect

Active Publication Date: 2022-06-28
江苏恒鑫正宏科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the brake chambers for automobiles with high strength levels on the market have poor wear resistance and corrosion resistance, and there is a problem of delayed fracture; while the brake chambers for automobiles with excellent corrosion resistance have generally low strength levels. , cannot meet the increasing demand of automobiles

Method used

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  • High-strength aluminum alloy profile for brake chamber and processing technology of high-strength aluminum alloy profile

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Experimental program
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Effect test

Embodiment 1

[0044] A process for processing high-strength aluminum alloy profiles for brake air chambers, comprising the following steps:

[0045] S1: Take ZL205A as the aluminum alloy base material, stir the aluminum alloy base material at 715°C for 10min, heat up to 745°C and add a modifier for 8min;

[0046] The modifier is obtained by compounding Al-10La and Al-Sc, the mass ratio of rare earth Sc element and rare earth La element is 1.4:4, and the mass fraction ratio of rare earth La element and aluminum alloy body is 0.4%;

[0047] S2: Cool down to 725°C, use refining agent for flux purification, argon gas for rotary blowing degassing purification treatment of aluminum alloy melt, sub-package treatment with aluminum foil paper, divide into 8 parts, and add to the bell jar in batches. Inside, and then continuously stirred for 15 minutes, after refining, let stand for 15 minutes, and cooled by water cooling to obtain the aluminum alloy substrate after quenching;

[0048] The refining ...

Embodiment 2

[0058] A process for processing high-strength aluminum alloy profiles for brake air chambers, comprising the following steps:

[0059] S1: Take ZL205A as the aluminum alloy base material, stir the aluminum alloy base material at 720 °C for 8 minutes, heat up to 760 °C, add a modifier for 7 minutes;

[0060] The modifier is obtained by compounding Al-10La and Al-Sc, the mass ratio of rare earth Sc element and rare earth La element is 1.5:4, and the mass fraction ratio of rare earth La element and aluminum alloy body is 0.4%;

[0061] S2: Cool down to 730°C, use refining agent for flux purification, argon gas for rotary injection degassing purification treatment of aluminum alloy melt, sub-package treatment with aluminum foil paper, divide into 9 parts, and add to the bell jar in stages. Inside, and then continuously stirred for 15min, after refining, let stand for 18min, and cooled with water to obtain the aluminum alloy substrate after quenching;

[0062] The refining agent i...

Embodiment 3

[0073] A process for processing high-strength aluminum alloy profiles for brake air chambers, comprising the following steps:

[0074] S1: Take ZL205A as the aluminum alloy base material, stir the aluminum alloy base material at 725°C for 5min, heat up to 765°C, add a modifier for 6min;

[0075] The modifier is obtained by compounding Al-10La and Al-Sc, the mass ratio of rare earth Sc element to rare earth La element is 1.8:4, and the mass fraction ratio of rare earth La element to aluminum alloy body is 0.4%;

[0076] S2: Cool down to 735°C, use refining agent for flux purification, argon gas for rotary injection degassing purification treatment of aluminum alloy melt, sub-package treatment with aluminum foil paper, divide into 10 parts, and add to the bell jar in stages. Inside, and then continuously stirred for 15min, after refining, let stand for 20min, and cooled with water to obtain the aluminum alloy substrate after quenching;

[0077] The refining agent is obtained by...

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Abstract

According to the high-strength aluminum alloy profile for the brake chamber and the machining technology of the high-strength aluminum alloy profile, ZL205A is selected to be made into an aluminum alloy body, the microstructure of the aluminum alloy is improved by limiting the type and content of the added alterant and matching with a proper solid solution aging heat treatment method, and then the normal-temperature and high-temperature mechanical properties of the alloy are improved; rare earth Sc and rare earth La are added into the alloy for modification treatment, and an aluminum alloy body is treated by using an ion nitriding technology, so that the hardness, wear resistance and fatigue resistance of the aluminum alloy body are remarkably improved, and the aluminum alloy body is uniform and compact in structure and gentle in hardness gradient; the impurity removal and purification capacity is enhanced by limiting a refining agent and a rotary blowing degassing and purification treatment process, and the precision of the aluminum alloy is effectively improved; the components and content of the electrolyte are limited, anodic oxidation is carried out on the surface of the aluminum alloy body, and the composite nano cerium oxide is introduced, so that the corrosion resistance of the surface of the aluminum alloy body is improved, and meanwhile, the service life of the aluminum alloy profile is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of mechanical parts processing, in particular to a high-strength aluminum alloy profile for a brake air chamber and a processing technology thereof. Background technique [0002] The brake air chamber is an important part of the vehicle. It converts the pressure of the compressed air into a mechanical force that makes the brake camshaft rotate, and implements emergency braking; and the brake air chamber of the vehicle is divided into front and rear, although the front and rear brake air chambers The structure is basically the same but there are differences in size. The composition includes air intake, cover, diaphragm, support disc, return spring, housing, push rod, connecting fork, clamp and aluminum alloy body, etc. When the car brakes, The air enters the brake air chamber from the air inlet. Under the action of pressure, the diaphragm is deformed, pushes the push rod, drives the brake adjustment arm, rota...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22F1/04C25D11/08C22C1/02
CPCC22C1/06C22C1/026C22F1/04C25D11/08
Inventor 张家伟吴妍萍孙兹建
Owner 江苏恒鑫正宏科技有限公司
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