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A heat-treatment-free cast aluminium alloy material and a producing process thereof

A technology of casting aluminum alloy and heat-free treatment, which is applied in the field of metal materials, can solve the problems of consuming a lot of energy, energy and time, and increase production costs, and achieve the effects of reducing energy consumption, reducing loss, and simplifying the process

Inactive Publication Date: 2015-05-27
JIANGXI HUAYOU MACHINERY
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  • Abstract
  • Description
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Problems solved by technology

And heat treatment needs to consume a lot of energy, energy and time, which increases the production cost

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0020] (1) Material selection by weight percentage: 7-10% silicon, 5-6% tin, 1.3-2% copper, 0.5-1% manganese, 0.5-1% zinc, 0.8-1% iron , The rest is aluminum, the total weight ratio is 100%, and the ingredients are mixed in proportion;

[0021] (2) Preheat the melting furnace to 700 ~ 730℃, and then put the mixture of ingredients in step 1 into the melting furnace for 45 minutes;

[0022] (3) Set the melting furnace temperature to 730 ~ 750℃, and add 0.5-1% DLJ-4 refining agent based on the weight of molten aluminum;

[0023] (4) Continue to stir the aluminum alloy liquid in the melting furnace to heat the aluminum alloy liquid up and down uniformly. Keep the temperature of the melting furnace set to 730 ~ 750°C and refining for 10 to 12 minutes. After the refining agent turns red, remove the slag fish out;

[0024] (5) Sampling is sent for inspection and spectrum analysis and the composition is adjusted according to step 1, to be poured;

[0025] (6) The smelting time should not exce...

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Abstract

A heat-treatment-free cast aluminium alloy material and a producing process thereof are disclosed. The cast aluminium alloy material and the producing process are characterized in that the cast aluminium alloy material comprises following components by weight: 7-10% of silicon, 5-6% of stannum, 1.3-2% of copper, 0.5-1% of manganese, 0.5-1% of zinc and 0.8-1% of iron, with the balance being aluminum and the total weight percent being 100%. A heat treatment step is omitted in the producing process, thus reducing investment for equipment, staffs and energy. The hardness reaches 76-80 HB and the tensile strength is 270 MPa, so that hardness and strength of components are enhanced, the yield of the components is increased and the service lifetime of the components is prolonged. Machinability is improved, so that the machining efficiency is increased by 20% and loss of machine tools and cutters is reduced. Accordingly, the cast aluminium alloy material and the producing process thereof reduce the energy consumption, increase the yield, simplify steps, reduce the cost and reduce pollution.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a heat-free casting aluminum alloy material and a production process thereof. Background technique [0002] Casting aluminum alloys can directly obtain aluminum alloys and aluminum alloy castings of parts by metal casting forming process. The content of alloy elements in this type of alloy is generally more than that of the corresponding deformed aluminum alloy. The existing cast aluminum alloys are mainly aluminum-silicon alloys, which are composed of Al, Si, Cu, and Mg. When higher strength and better cutting performance are required, heat treatment is required to meet the above requirements. Moreover, the heat treatment needs to consume a lot of energy, energy and time, which increases the production cost. Contents of the invention [0003] In order to solve the deficiencies of the prior art, the present invention provides a heat-free casting aluminum alloy formula ...

Claims

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Application Information

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IPC IPC(8): C22C21/02
CPCC22C21/02C22C21/003
Inventor 喻友贵何建文
Owner JIANGXI HUAYOU MACHINERY
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