CN103938042A - Aluminum alloy material with good machinability - Google Patents
Aluminum alloy material with good machinability Download PDFInfo
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- CN103938042A CN103938042A CN201410074350.2A CN201410074350A CN103938042A CN 103938042 A CN103938042 A CN 103938042A CN 201410074350 A CN201410074350 A CN 201410074350A CN 103938042 A CN103938042 A CN 103938042A
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- aluminum alloy
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Abstract
The invention relates to an aluminum alloy material with good machinability. The aluminum alloy material comprises, by mass, 4.8-5.0% of Cu, 0.3-0.35% of Sn, 0.35-0.50% of Bi, 0.6-0.65% of Zn, 0.2-0.25% of Mg, and the balance Al and inevitable impurities. The addition of Mg improves the skeleton strength of Cu in the aluminum alloy, and the increase of the dimension of Mg, Sn, Bi and Zn compounds reduces the thermal deformation coefficient and inhibits cracks.
Description
Technical field
The invention belongs to metal material field, refer to especially a kind of aluminum alloy materials with good machinability.
Background technology
In order to make aluminium alloy there is good cutting ability, be generally in aluminium alloy, to add lead to improve its cutting ability.But due to the hazardness of lead to environment and human body, must to search out and can substitute plumbous aluminum alloy materials.
Prior art proposes to add tin and bismuth manufacture to have the aluminium alloy of good cutting in aluminum alloy materials, but with plumbous aluminium alloy comparison, its fragility increases, and this aluminium alloy has crack appearance when carrying out forge hot pressure.
In order to overcome above-mentioned defect, existing have again technology to propose in the aluminium alloy that adds tin and bismuth by adding zinc to reduce the fragility in aluminium alloy, and be reduced in the possibility that occurs crack when forge hot is pressed.
But in adding the aluminium alloy of zinc, although can reduce fragility and reduce the crack when forge hot is pressed, while adding zinc, can reduce the corrosion resistance nature of aluminium alloy.
Summary of the invention
The object of the invention is existing aluminum alloy materials to form and propose to improve technical scheme, by the technical program, can overcome in aluminium alloy the not defect of leading, and the cutting ability simultaneously improving.
The present invention is achieved by the following technical solutions:
An aluminum alloy materials with good cutting, include by mass percentage the copper of 4.8-5.0%, the bismuth of the tin of 0.3-0.35%, 0.35-0.50%, the magnesium of the zinc of 0.6-0.65% and 0.2-0.25%, surplus is aluminium and inevitable impurity.
The mass ratio of described zinc and magnesium is 2.8: 1.
The invention has the beneficial effects as follows:
By add magnesium in composition, on the one hand can improve the frame strength of copper in aluminium alloy, the size of the compound by magnesium and tin, bismuth and zinc increases and thermal deformation coefficient is being reduced, the generation in inhibition crack on the other hand.
Embodiment
Describe by the following examples technical scheme of the present invention in detail, should be understood that, following embodiment is only exemplary, only can be used for explaining and technical scheme of the present invention being described, and can not to be interpreted as is the restriction to technical solution of the present invention.
An aluminum alloy materials with good cutting, include by mass percentage the copper of 4.8-5.0%, the bismuth of the tin of 0.3-0.35%, 0.35-0.50%, the magnesium of the zinc of 0.6-0.65% and 0.2-0.25%, surplus is aluminium and inevitable impurity.The mass ratio of described zinc and magnesium is 2.8: 1.
In aluminium alloy, by adding copper, the skeleton that copper can form approximate rule in aluminium alloy supports, and now magnesium forms large particle diameter crystal together with copper skeleton in conjunction with being also combined with tin, bismuth and zinc simultaneously, is enough to make the breach of fragment division to form size.And the crystal grain temperature influence forming is low, can when through steps such as quenchings, there is not crack to produce.
Embodiment 1
An aluminum alloy materials with good cutting, includes by mass percentage 4.8% copper, 0.3% tin, 0.35% bismuth, 0.6% zinc and 0.22% magnesium, and surplus is aluminium and inevitable impurity.
Embodiment 2
An aluminum alloy materials with good cutting, includes by mass percentage 5.0% copper, 0.35% tin, 0.50% bismuth, 0.65% zinc and 0.24% magnesium, and surplus is aluminium and inevitable impurity.
Embodiment 3
An aluminum alloy materials with good cutting, includes by mass percentage 4.9% copper, 0.33% tin, 0.45% bismuth, 0.62% zinc and 0.22% magnesium, and surplus is aluminium and inevitable impurity.
Embodiment 4
An aluminum alloy materials with good cutting, includes by mass percentage 5.0% copper, 0.3% tin, 0.50% bismuth, 0.65% zinc and 0.24% magnesium, and surplus is aluminium and inevitable impurity.
Claims (2)
1. an aluminum alloy materials with good cutting, it is characterized in that: include by mass percentage the copper of 4.8-5.0%, the bismuth of the tin of 0.3-0.35%, 0.35-0.50%, the magnesium of the zinc of 0.6-0.65% and 0.2-0.25%, surplus is aluminium and inevitable impurity.
2. the aluminum alloy materials with good cutting according to claim 1, is characterized in that: the mass ratio of described zinc and magnesium is 2.8: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410074350.2A CN103938042A (en) | 2014-03-03 | 2014-03-03 | Aluminum alloy material with good machinability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410074350.2A CN103938042A (en) | 2014-03-03 | 2014-03-03 | Aluminum alloy material with good machinability |
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| Publication Number | Publication Date |
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| CN103938042A true CN103938042A (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410074350.2A Pending CN103938042A (en) | 2014-03-03 | 2014-03-03 | Aluminum alloy material with good machinability |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004003007A (en) * | 2002-04-25 | 2004-01-08 | Furukawa Electric Co Ltd:The | Aluminum alloy having excellent machinability, method for forging the same, and forging thereof |
| CN101812618A (en) * | 2002-04-25 | 2010-08-25 | 古河Sky株式会社 | But the method and the forged article that have the aluminium alloy of good cutting and prepare forged article |
| JP5337326B1 (en) * | 2011-12-02 | 2013-11-06 | 古河スカイ株式会社 | Aluminum alloy material, aluminum alloy structure and manufacturing method thereof |
| CN103572183A (en) * | 2013-10-21 | 2014-02-12 | 黄宣斐 | Thermal treatment method of aluminium alloy with good cutting property |
| CN103572133A (en) * | 2013-10-21 | 2014-02-12 | 黄宣斐 | Aluminium alloy material with good forging and pressing property |
-
2014
- 2014-03-03 CN CN201410074350.2A patent/CN103938042A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004003007A (en) * | 2002-04-25 | 2004-01-08 | Furukawa Electric Co Ltd:The | Aluminum alloy having excellent machinability, method for forging the same, and forging thereof |
| CN101812618A (en) * | 2002-04-25 | 2010-08-25 | 古河Sky株式会社 | But the method and the forged article that have the aluminium alloy of good cutting and prepare forged article |
| JP5337326B1 (en) * | 2011-12-02 | 2013-11-06 | 古河スカイ株式会社 | Aluminum alloy material, aluminum alloy structure and manufacturing method thereof |
| CN103572183A (en) * | 2013-10-21 | 2014-02-12 | 黄宣斐 | Thermal treatment method of aluminium alloy with good cutting property |
| CN103572133A (en) * | 2013-10-21 | 2014-02-12 | 黄宣斐 | Aluminium alloy material with good forging and pressing property |
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Application publication date: 20140723 |