Squeeze casting preparation method for magnalium automobile engine support

A technology for automobile engines and magnesium-aluminum alloys, which is applied in the preparation of automobile engine brackets and the field of extrusion casting preparation of magnesium-aluminum alloy automobile engine brackets, can solve problems such as unsatisfactory mechanical properties, and achieve economic benefits, fine grains, and Effect of reducing machining allowance

Inactive Publication Date: 2017-05-10
过冬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical properties still cannot meet the needs of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1

[0028] A method for preparing a magnesium-aluminum alloy automobile engine bracket by squeeze casting, the method includes the following steps:

[0029] (1) The weight percentages of the raw material components of the magnesium-aluminum alloy are: 3.5% Si, 1.8% Fe, 1% Ti, 0.25% Cu, 0.01% Mn, 15.5% Mg, Zn<0.1%, Ni<0.05%, Pb <0.05%, Sn <0.05%, and the rest is Al.

[0030] (2) When the configured magnesium-aluminum alloy raw material components are heated to 320℃ in an oven, the crucible melting furnace is heated at the same time, and a layer of covering agent is sprinkled on the bottom of the crucible melting furnace to remove the preheated magnesium-aluminum alloy raw materials The components are added to the crucible melting furnace;

[0031] (3) When the temperature is increased to 600°C, argon gas is introduced, and the flow rate of argon gas is 5% / min of the solvent in the crucible melting furnace;

[0032] (4) After the magnesium-aluminum alloy raw material comp...

Example Embodiment

[0040] Example 2

[0041] A method for preparing a magnesium-aluminum alloy automobile engine bracket by squeeze casting, the method includes the following steps:

[0042] (1) The weight percentages of the raw material components of the magnesium aluminum alloy are: 5.5% Si, 2% Fe, 1.2% Ti, 0.15% Cu, 0.05% Mn, 10.2% Mg, Zn<0.1%, Ni<0.05%, Pb <0.05%, Sn <0.05%, and the rest is Al.

[0043] (2) When the configured magnesium-aluminum alloy raw material components are heated to 345℃ in an oven, the crucible melting furnace is heated at the same time, and a layer of covering agent is sprinkled on the bottom of the crucible melting furnace to remove the preheated magnesium-aluminum alloy raw materials The components are added to the crucible melting furnace;

[0044] (3) When the temperature is increased to 500°C, argon gas is introduced, and the flow rate of argon gas is 8% / min of the solvent in the crucible melting furnace;

[0045] (4) After the magnesium-aluminum alloy raw material comp...

Example Embodiment

[0052] Example 3

[0053] A method for preparing a magnesium-aluminum alloy automobile engine bracket by squeeze casting, the method includes the following steps:

[0054] (1) The weight percentages of the raw material components of the magnesium aluminum alloy are: 4.5% Si, 1.7% Fe, 1.1% Ti, 0.18% Cu, 0.02% Mn, 13.5% Mg, Zn <0.1%, Ni <0.05%, Pb <0.05%, Sn <0.05%, and the rest is Al.

[0055] (2) When the configured magnesium-aluminum alloy raw materials are heated to 336°C in an oven, the crucible melting furnace is heated at the same time, and a layer of covering agent is sprinkled on the bottom of the crucible melting furnace to remove the preheated magnesium-aluminum alloy raw materials. The components are added to the crucible melting furnace;

[0056] (3) When the temperature is increased to 550°C, argon gas is introduced, and the flow rate of argon gas is 6.5% / min of the solvent in the crucible melting furnace;

[0057] (4) After the magnesium-aluminum alloy raw material compon...

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Abstract

The invention relates to a squeeze casting preparation method for a magnalium automobile engine support. Magnalium comprises the following raw material components by weight percent: 3.5-5.5% of Si, 1-2.5% of Fe, 0.5-2% of Ti, 0.15-0.25% of Cu, 0.01-0.05% of Mn, 10.2-15.5% of Mg, less than 0.1% of Zn, less than 0.05% of Ni, less than 0.05% of Pb, less than 0.05% of Sn and the balance of Al, wherein Fe/Ti is more than 1 and less than 2. The squeeze casting preparation method comprises the following steps: preheating the raw material components at 320-345 DEG C, and then, adding into a heated crucible melting furnace; and continually heating to 500-600 DEG C, then pumping in argon, after that, heating to 760-780 DEG C, transferring into a crane ladle, performing heat preservation, refining, casting, and then conducting solution and aging strengthening to obtain the automobile engine support with superior mechanical property. The prepared automobile engine support has the tensile strength of 320 MPa or above and the yield strength of 100-110 MPa.

Description

technical field [0001] The invention relates to a method for preparing an automobile engine bracket, in particular to a method for preparing a magnesium-aluminum alloy automobile engine bracket by squeeze casting. It belongs to the technical field of alloy manufacturing. Background technique [0002] In the fierce competition in the world automobile market, all countries are developing in the direction of high quality, high reliability, light weight, energy saving and low cost. In terms of materials, it is lightweight, replacing some steel (iron) parts with aluminum alloys, in order to meet the requirements of high-quality, low-cost development of automobiles; in terms of technology, it is scientific, using advanced technology to replace traditional technology to achieve The purpose of improving blank precision, reducing machining allowance, reducing raw material consumption, and reducing cost. To further expand the application of aluminum alloy materials in automobile str...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22C1/02C22C1/06B22D18/02C22F1/047
CPCC22C21/08B22D18/02C22C1/026C22C1/06C22F1/047
Inventor 过冬
Owner 过冬
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