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Method for preparing brake servo piston material

A servo piston and piston technology, which is applied in the preparation of brake servo piston materials, can solve the problems of thermal fatigue damage and the difficulty of adapting to the needs of high temperature-resistant aluminum alloys, and achieves prevention of grain boundary slippage, dense, uniform and stable structure and high hardness. and wear resistance

Inactive Publication Date: 2021-01-08
ZHEJIANG JIAMIN PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as engines for trucks, railway locomotives and ships are all developing towards high power, high load and strict emission requirements, due to the limitations of the characteristics of the material itself and the production conditions of the process, it is still difficult to use various strengthening measures. To meet the requirements, the phenomenon of thermal fatigue damage is becoming more and more prominent, which has become one of the main factors affecting the reliability of automotive systems. High temperature resistant aluminum alloys have become increasingly difficult to meet the needs

Method used

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  • Method for preparing brake servo piston material
  • Method for preparing brake servo piston material
  • Method for preparing brake servo piston material

Examples

Experimental program
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Effect test

Embodiment 1

[0026] according to figure 1 , 2 , 3, the present embodiment proposes a preparation method of brake servo piston material, comprising the following steps:

[0027] Step 1: Prepare raw materials for high-strength aluminum alloy materials. The raw materials include the following mass ratio components: 135 parts of aluminum powder, 8 parts of silicon powder, 12 parts of strontium powder, 5 parts of iron powder, 0.5 parts of chromium powder, 2 parts of manganese powder, and 3 parts of Nickel powder, 15 parts of carbon powder, 3 parts of magnesium powder, 35 parts of titanium carbide powder, 1 part of copper powder and 2 parts of graphene powder;

[0028] Step 2: Design a mixer for mixing raw materials, the mixer includes a base 1, a mixer body 2, a stirring device and a feeding device, the base 1 is provided with a mixer body 2, and the mixer body 2 is below A discharge port 3 is provided, a discharge valve 4 is provided on the discharge port 3, a stirring device is provided in ...

Embodiment 2

[0033] according to figure 1 , 2 , 3, the present embodiment proposes a preparation method of brake servo piston material, comprising the following steps:

[0034] Step 1: Prepare raw materials for high-strength aluminum alloy materials. The raw materials include the following mass ratio components: 145 parts of aluminum powder, 9 parts of silicon powder, 14 parts of strontium powder, 6 parts of iron powder, 0.8 parts of chromium powder, 3 parts of manganese powder, 4 parts Nickel powder, 18 parts of carbon powder, 4 parts of magnesium powder, 38 parts of titanium carbide powder, 2 parts of copper powder and 3 parts of graphene powder;

[0035] Step 2: Design a mixer for mixing raw materials, the mixer includes a base 1, a mixer body 2, a stirring device and a feeding device, the base 1 is provided with a mixer body 2, and the mixer body 2 is below A discharge port 3 is provided, a discharge valve 4 is provided on the discharge port 3, a stirring device is provided in the st...

Embodiment 3

[0040] according to figure 1 , 2 , 3, the present embodiment proposes a preparation method of brake servo piston material, comprising the following steps:

[0041] Step 1: Prepare the raw materials of high-strength aluminum alloy materials. The raw materials include the following mass ratio components: 160 parts of aluminum powder, 10 parts of silicon powder, 15 parts of strontium powder, 8 parts of iron powder, 1 part of chromium powder, 4 parts of manganese powder, 5 parts of Nickel powder, 20 parts carbon powder, 5 parts magnesium powder, 40 parts titanium carbide powder, 3 parts copper powder and 4 parts graphene powder

[0042] Step 2: Design a mixer for mixing raw materials, the mixer includes a base 1, a mixer body 2, a stirring device and a feeding device, the base 1 is provided with a mixer body 2, and the mixer body 2 is below A discharge port 3 is provided, a discharge valve 4 is provided on the discharge port 3, a stirring device is provided in the stirring, the ...

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Abstract

The invention discloses a method for preparing a brake servo piston material. The method comprises the steps of: preparing raw materials such as aluminum, silicon, strontium, iron, chromium, manganese, nickel, carbon, magnesium, titanium carbide, copper and graphene; designing a mixer for mixing the raw materials; carrying out ball milling treatment on the raw materials, carrying out screening, and mixing the raw materials by using the mixer; pouring the mixed raw materials into a molding mold, and carrying out high-temperature smelting and cooling discharging to obtain a piston material roughblank; and carrying out micro forging on the piston material rough blank by adopting high-frequency vibration impact force to obtain a piston material. The high-temperature tensile strength of the piston material prepared through the method reaches 98.61 MPa, and the structural strength is obviously improved; through optimization design of the structure of the mixer for mixing the raw materials,the condition that the raw materials of multiple alloying elements can be evenly mixed can be ensured, and the internal structure of the piston material is compact, uniform and stable; and micro forging is carried out on the piston material rough blank by adopting the high-frequency vibration impact force, so that the fatigue strength of the piston material can be improved.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a preparation method of brake servo piston material. Background technique [0002] Pistons are known to play an important role in automotive systems, being subjected to constant alternating mechanical and thermal loads during the operation of the car. Since the piston works under the condition of high temperature, high pressure and high speed, the material used for the piston must have high high temperature strength and good wear resistance to maintain the stable working efficiency of the automotive system. [0003] At present, the main piston materials used are high temperature resistant aluminum alloy, cast iron and cast steel materials. Among them, high temperature resistant aluminum alloy is the most widely used. However, as engines for trucks, railway locomotives and ships are all developing towards high power, high load and strict emission requirements, due to the limitations...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C32/00C22C1/10C22F1/04
CPCC22C21/00C22C32/0047C22C1/1036C22F1/04C22C1/1047
Inventor 沈培林张有生万胜兵
Owner ZHEJIANG JIAMIN PLASTIC
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