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Metal liquid for aluminum alloy brake disc and process for casting brake disc from it

A casting process and a technology for brake discs are applied in the field of aluminum alloy brake disc molten metal and the process of casting brake discs therefrom, and can solve the problems of poor consistency of casting performance, uneven distribution of components of aluminum alloy brake discs, poor wear resistance, etc. , to achieve the effect of good performance consistency, improved wear resistance and improved wettability

Active Publication Date: 2019-09-24
BEIJING TIANYISHANGJIA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, what the present invention aims to solve is that the aluminum alloy brake disc produced by the metal mold gravity casting process has the defects of uneven component distribution, poor casting performance consistency and poor wear resistance, and then provides a component distribution evenly, An aluminum alloy brake disc metal liquid with good casting performance consistency and good wear resistance and a process for casting brake discs from it

Method used

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  • Metal liquid for aluminum alloy brake disc and process for casting brake disc from it
  • Metal liquid for aluminum alloy brake disc and process for casting brake disc from it
  • Metal liquid for aluminum alloy brake disc and process for casting brake disc from it

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment provides a casting process of an aluminum alloy brake disc, including the following steps:

[0040] (1) Preparation of the metal mold casting mold for the aluminum alloy brake disc: prepare the sand core and the metal mold cavity separately, make the core with new sand to obtain the sand core, and then lower the sand core into the metal mold cavity to combine Mold, make a metal mold;

[0041] (2) The silicon carbide particles with an average particle size of 10μm are immersed in a 54% NaOH aqueous solution with a mass fraction of 54%. The immersion temperature is controlled to 90°C and the immersion time is 30min; after taking it out, it is immersed in a mass fraction of 21 % Potassium fluorozirconate aqueous solution, the immersion temperature is controlled to 75°C, and the immersion time is 120min; after taking it out, it is dried at 1125°C to obtain a desiccant;

[0042] (3) Melt aluminum to obtain liquid aluminum; then mix the desiccant and the liquid alum...

Embodiment 2

[0046] This embodiment provides a casting process of an aluminum alloy brake disc, including the following steps:

[0047] (1) Preparation of the metal mold casting mold for the aluminum alloy brake disc: prepare the sand core and the metal mold cavity separately, make the core with new sand to obtain the sand core, and then lower the sand core into the metal mold cavity to combine Mold, make a metal mold;

[0048] (2) The silicon carbide particles with an average particle size of 8μm are immersed in a 53.4% ​​NaOH aqueous solution with a mass fraction of 53.4%. The immersion temperature is controlled to 100°C and the immersion time is 25min; after taking it out, it is immersed in a 21.3 % Potassium fluorozirconate aqueous solution, the immersion temperature is controlled to 70°C, and the immersion time is 130min; after taking it out, it is dried at 1150°C to obtain a desiccant;

[0049] (3) Melt aluminum to obtain liquid aluminum; then mix the drying material and the liquid aluminu...

Embodiment 3

[0053] This embodiment provides a casting process of an aluminum alloy brake disc, including the following steps:

[0054] (1) Preparation of the metal mold casting mold for the aluminum alloy brake disc: prepare the sand core and the metal mold cavity separately, make the core with new sand to obtain the sand core, and then lower the sand core into the metal mold cavity to combine Mold, make a metal mold;

[0055] (2) The silicon carbide particles with an average particle size of 12μm are immersed in a 54.5% NaOH aqueous solution with a mass fraction of 54.5 percent. The immersion temperature is controlled to 80°C and the immersion time is 30min; after taking it out, it is immersed in a mass fraction of 20.7 % Potassium fluorozirconate aqueous solution, the immersion temperature is controlled to 80℃, and the immersion time is 125min; after taking it out, it is dried at 1100℃ to obtain a desiccant;

[0056] (3) Melt aluminum to obtain liquid aluminum; then mix the desiccant and the ...

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Abstract

The invention discloses aluminum alloy brake disc molten metal and a technology for casting a brake disc through the aluminum alloy brake disc molten metal. The aluminum alloy brake disc molten metal is prepared through the steps that silicon carbide particles are sequentially subjected to first dipping and second dipping in a strong base water solution and potassium fluozirconate water solution, after second dipping is finished, the silicon carbide particles are taken out and dried, a dried material is obtained, then the dried material is mixed with molten aluminum, and molten metal is obtained. The technology comprises the following steps that a metal mold casting mold for the aluminum disc brake disc is prepared; the molten metal is poured into a cavity of the metal mold casting mold, after cooling is finished, the molten metal is taken out, and the aluminum alloy brake disc is manufactured. As the molten liquid and components in the aluminum alloy brake disc manufactured through the technology are distributed uniformly, the aluminum alloy brake disc is good in performance consistency and good in abrasive resistance.

Description

Technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a molten aluminum alloy brake disc and a process for casting the brake disc from the liquid metal. Background technique [0002] The brake disc is an important part of the automobile brake system, and its braking performance is directly related to the safety of driving. The currently widely used cast iron brake discs have low thermal conductivity, are prone to thermal cracking, and have poor wear resistance. In order to avoid the above-mentioned shortcomings of cast iron brake discs, replacing cast iron brake discs with light weight and excellent performance metal matrix composite brake discs is the main development direction of automobile brake discs in the future. Aluminum-based composite materials are the most common metal-based composite materials in the prior art. Aluminum-based composite brake discs made of aluminum-based composite materials instead of cast iron bra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/06B22C3/00C22C1/10C22C21/00C22C32/00
Inventor 吴佩芳崔新亮
Owner BEIJING TIANYISHANGJIA NEW MATERIAL
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