CN109175291A - A kind of half melt minute-pressure molding preparation method of middle-size and small-size zinc-containing alloy axle sleeve - Google Patents
A kind of half melt minute-pressure molding preparation method of middle-size and small-size zinc-containing alloy axle sleeve Download PDFInfo
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- CN109175291A CN109175291A CN201811068785.0A CN201811068785A CN109175291A CN 109175291 A CN109175291 A CN 109175291A CN 201811068785 A CN201811068785 A CN 201811068785A CN 109175291 A CN109175291 A CN 109175291A
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- zinc
- containing alloy
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- axle sleeve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/007—Semi-solid pressure die casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
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Abstract
The present invention relates to the preparation process field of middle-size and small-size zinc-base axis products, half melt minute-pressure of specifically a kind of middle-size and small-size zinc-containing alloy axle sleeve molds preparation method.Including half melt zinc-containing alloy melt of preparation, quantitatively injects in the recessed model cavity of mold, upper male mould is made by clamp force to apply minute-pressure and cooling and demolding to half melt zinc-containing alloy melt in lower cavity die.When through the invention to solve to produce small-sized zinc-containing alloy axle sleeve using casting method, there is shrinkage cavity and porosity and component segregation problem in casting bottom, while improving the mechanical property and anti-attrition wear-resisting property of small-sized zinc-containing alloy axle sleeve.
Description
Technical field
The present invention relates to the preparation process field of middle-size and small-size zinc-base axis products, specifically a kind of middle-size and small-size zinc-base is closed
Half melt minute-pressure of golden axle sleeve molds preparation method.
Background technique
ZA27 zinc-containing alloy relies on its good mechanical property and anti-attrition wear-resisting property, successfully replaces copper alloy, Pasteur
Alloy is widely used in producing the anti-attritions wear resistant products such as all kinds of axle sleeves, bearing shell, sliding block, slide plate.Currently, most associated productions
Enterprise manufactures zinc-containing alloy axle sleeve using Regular casting methods, but since zinc-containing alloy is with primary alloy constituent specific gravity difference
Greatly, the features such as alloy graining temperature range is wide, causing the zinc-containing alloy axle sleeve manufactured by Regular casting methods, that there are ingredients is inclined
Phenomena such as analysis, bottom shrinkage porosite, to greatly affected the yield rate and service performance of zinc-containing alloy axle sleeve.
In order to improve the homogeneity of ingredients of zinc-containing alloy axle sleeve microstructure, shrinkage porosity defect of contraction cavity is eliminated, its mechanics is improved
Performance and anti-attrition wear-resisting property, some enterprises manufacture medium-and-large-sized zinc-containing alloy axle sleeve using inner core water-cooled casting method and achieve
Relatively good effect, but for small-sized zinc-containing alloy axle sleeve, moulds of industrial equipment used in inner core water-cooled casting method are complicated, work
Die-filling tool is influenced there are water cooling core manufacture difficulty by sand layer and water cooling core, and casting casting process is inconvenient, cooling
Rear axle housing is not easy to take out from moulds of industrial equipment, and is difficult to that casting is effectively avoided component segregation and bottom contracting defect, small-sized zinc-base occur
Alloy sleeve qualified casting is low, performance is poor.
Summary of the invention
The present invention is intended to provide a kind of half melt minute-pressure suitable for the production of middle-size and small-size zinc-containing alloy axle sleeve molds preparation side
Method, when solving to produce small-sized zinc-containing alloy axle sleeve using casting method, there is shrinkage cavity and porosity in casting bottom and component segregation is asked
Topic, while improving the mechanical property and anti-attrition wear-resisting property of small-sized zinc-containing alloy axle sleeve.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows: a kind of middle-size and small-size zinc-containing alloy axle sleeve
Half melt minute-pressure molds preparation method, comprising the following steps:
1) half melt zinc-containing alloy melt, is prepared；
It 2), will be in the recessed model cavity of the half melt zinc-containing alloy melt quantitative that prepared in step 1) injection mold；
3), the upper male mould of mold is mounted on the lower cavity die in step 2 to carry out mould assembly, adjust upper male mould and lower cavity die it
Between clamp force so that upper male mould in recessed model cavity half melt zinc-containing alloy melt apply minute-pressure；
4) clamp force in step 3) between upper male mould and lower cavity die, is maintained, is opened after the solidification of half melt zinc-containing alloy melt
It takes out, obtains zinc-containing alloy axle sleeve.
Preferably, the method for half melt zinc-containing alloy melt is prepared in step 1) are as follows: firstly, to zinc-containing alloy continuous heating
To being completely melt, secondly, the zinc-containing alloy being completely melt is cooled under its liquidus temperature 40-50 DEG C, finally, remaining permanent
Temperature is simultaneously sufficiently stirred and makes within 3-5 minutes zinc-containing alloy melt composition paste, obtains half melt zinc-containing alloy melt.
Preferably, mold is metal pattern die, is quantitatively injected before half melt zinc-containing alloy melt in step 2 first by mould
Tool is preheated to 180-200 DEG C.
Preferably, in step 2, the quality of the half melt zinc-containing alloy melt injected into the recessed model cavity of mold is institute
1.05-1.10 times of the zinc-containing alloy axle sleeve quality that need to be prepared.
Preferably, in mold recessed model cavity depth be greater than required preparation zinc-containing alloy axle sleeve height 3-5mm；Step
3) minute-pressure described in refers to that adjustment clamp force enters upper male mould under recessed model cavity 3-5mm state, and upper male mould is to recessed model
The pressure that half melt zinc-containing alloy melt in chamber generates.
Preferably, the upper male mould of mold is equipped with vent plug.
Preferably, in step 4), maintaining the time of the clamp force in step 3) between upper male mould and lower cavity die is 1.0-
2.0 minute.
Beneficial effect
The present invention passes through the zinc-containing alloy melt of half melt of preparation, and dendrite when by zinc-containing alloy melt solidification and crystallization is changed into
Equiax crystal controls solid volume fraction in melt under constant temperature and maintains 40-45%, quantitative to pour into half melt zinc-containing alloy melt
In the recessed model cavity of preheated mold, upper male mould applies minute-pressure, zinc by zinc-containing alloy melt of the clamp force to solidification after molding
Based alloy melt forms equiaxed grain structure after being frozen into zinc-containing alloy axle sleeve, and dense structure, ingredient is uniform, and eliminates in tissue
Shrinkage porosity defect of contraction cavity, the mechanical property and wear-resisting property of zinc-containing alloy axle sleeve are improved compared with conventional cast method.It solves using casting
The method of making manufactures the component segregation occurred when small-sized zinc-containing alloy axle sleeve and casting rarefaction defect, is prepared using the present invention middle-size and small-size
When kirsite axle sleeve, equipment is simple, and small investment is at low cost, high-efficient.
Specific embodiment
Technical solution of the present invention is further elaborated combined with specific embodiments below.
A kind of half melt minute-pressure of middle-size and small-size zinc-containing alloy axle sleeve of embodiment 1 molds preparation method, comprising the following steps:
1), the preparation of half melt zinc-containing alloy melt；ZA27 zinc-containing alloy is chosen, firstly, to zinc-containing alloy continuous heating to complete
Running down, secondly, the zinc-containing alloy being completely melt merging crucible, which is cooled to 450 DEG C, (is cooled to zinc-containing alloy liquidus curve temperature
50 DEG C below degree), finally, maintaining constant temperature and being sufficiently stirred to make within 3 minutes zinc-containing alloy melt composition paste, obtain half melt
Zinc-containing alloy melt.
2), prepare mold, mold is metal pattern die, including being equipped with the upper male mould of vent plug and the zinc of type chamber and required preparation
The corresponding lower cavity die of based alloy axle sleeve shape, is then preheated to 180 DEG C for mold, half melt that will finally prepare in step 1)
Zinc-containing alloy melt quantitative injects in the recessed model cavity of mold, and the quality of half melt zinc-containing alloy melt of injection is required system
1.05 times of standby zinc-containing alloy axle sleeve quality.
3), the upper male mould of mold is mounted on the lower cavity die in step 2 to carry out mould assembly, adjusts upper male mould and recessed
Clamp force between mould, so that upper male mould applies minute-pressure to half melt zinc-containing alloy melt in recessed model cavity；The present embodiment
In, the depth of recessed model cavity is greater than the zinc-containing alloy axle sleeve height 3mm of required preparation in mold；Minute-pressure described in step 3) is
Refer to that adjustment clamp force enters upper male mould under recessed model cavity 3mm state, upper male mould is to half melt zinc-base in recessed model cavity
The pressure that alloy melt generates.
4) clamp force 1.0 minutes in step 3) between upper male mould and lower cavity die, are maintained, to half melt zinc-containing alloy melt
It is opened and takes out after solidification, obtain zinc-containing alloy axle sleeve.
A kind of half melt minute-pressure of middle-size and small-size zinc-containing alloy axle sleeve of embodiment 2 molds preparation method, comprising the following steps:
1), the preparation of half melt zinc-containing alloy melt；ZA27 zinc-containing alloy is chosen, firstly, to zinc-containing alloy continuous heating to complete
Running down, secondly, the zinc-containing alloy being completely melt merging crucible, which is cooled to 455 DEG C, (is cooled to zinc-containing alloy liquidus curve temperature
45 DEG C below degree), finally, maintaining constant temperature and being sufficiently stirred to make within 4 minutes zinc-containing alloy melt composition paste, obtain half melt
Zinc-containing alloy melt.
2), prepare mold, mold is metal pattern die, including being equipped with the upper male mould of vent plug and the zinc of type chamber and required preparation
The corresponding lower cavity die of based alloy axle sleeve shape, is then preheated to 190 DEG C for mold, half melt that will finally prepare in step 1)
Zinc-containing alloy melt quantitative injects in the recessed model cavity of mold, and the quality of half melt zinc-containing alloy melt of injection is required system
1.07 times of standby zinc-containing alloy axle sleeve quality.
3), the upper male mould of mold is mounted on the lower cavity die in step 2 to carry out mould assembly, adjusts upper male mould and recessed
Clamp force between mould, so that upper male mould applies minute-pressure to half melt zinc-containing alloy melt in recessed model cavity；The present embodiment
In, the depth of recessed model cavity is greater than the zinc-containing alloy axle sleeve height 4mm of required preparation in mold；Minute-pressure described in step 3) is
Refer to that adjustment clamp force enters upper male mould under recessed model cavity 4mm state, upper male mould is to half melt zinc-base in recessed model cavity
The pressure that alloy melt generates.
4) clamp force 1.5 minutes in step 3) between upper male mould and lower cavity die, are maintained, to half melt zinc-containing alloy melt
It is opened and takes out after solidification, obtain zinc-containing alloy axle sleeve.
A kind of half melt minute-pressure of middle-size and small-size zinc-containing alloy axle sleeve of embodiment 3 molds preparation method, comprising the following steps:
1), the preparation of half melt zinc-containing alloy melt；ZA27 zinc-containing alloy is chosen, firstly, to zinc-containing alloy continuous heating to complete
Running down, secondly, the zinc-containing alloy being completely melt merging crucible, which is cooled to 460 DEG C, (is cooled to zinc-containing alloy liquidus curve temperature
40 DEG C below degree), finally, maintaining constant temperature and being sufficiently stirred to make within 5 minutes zinc-containing alloy melt composition paste, obtain half melt
Zinc-containing alloy melt.
2), prepare mold, mold is metal pattern die, including being equipped with the upper male mould of vent plug and the zinc of type chamber and required preparation
The corresponding lower cavity die of based alloy axle sleeve shape, is then preheated to 200 DEG C for mold, half melt that will finally prepare in step 1)
Zinc-containing alloy melt quantitative injects in the recessed model cavity of mold, and the quality of half melt zinc-containing alloy melt of injection is required system
1.10 times of standby zinc-containing alloy axle sleeve quality.
3), the upper male mould of mold is mounted on the lower cavity die in step 2 to carry out mould assembly, adjusts upper male mould and recessed
Clamp force between mould, so that upper male mould applies minute-pressure to half melt zinc-containing alloy melt in recessed model cavity；The present embodiment
In, the depth of recessed model cavity is greater than the zinc-containing alloy axle sleeve height 5mm of required preparation in mold；Minute-pressure described in step 3) is
Refer to that adjustment clamp force enters upper male mould under recessed model cavity 5mm state, upper male mould is to half melt zinc-base in recessed model cavity
The pressure that alloy melt generates.
4) clamp force 2.0 minutes in step 3) between upper male mould and lower cavity die, are maintained, to half melt zinc-containing alloy melt
It is opened and takes out after solidification, obtain zinc-containing alloy axle sleeve.
Tensile strength and section are carried out for zinc-containing alloy axle sleeve prepared by embodiment 1, embodiment 2 and embodiment 3
Shrinking percentage experiment, and compared with the ZA27 axle sleeve of Regular casting methods preparation, as a result as shown in Table 1:
The zinc-containing alloy axle sleeve prepared through the invention it can be seen from the experimental result of table one is prepared compared to conventional method
Axle sleeve, apparent reinforcement has been obtained in tensile strength and the contraction percentage of area, has had more excellent mechanical property and anti-attrition
Wear-resisting property, so that the yield rate and properties of product of zinc-containing alloy axle sleeve increase substantially.
Claims (7)
1. a kind of half melt minute-pressure of middle-size and small-size zinc-containing alloy axle sleeve molds preparation method, it is characterised in that: the following steps are included:
1) half melt zinc-containing alloy melt, is prepared；
It 2), will be in the recessed model cavity of the half melt zinc-containing alloy melt quantitative that prepared in step 1) injection mold；
3), the upper male mould of mold is mounted on the lower cavity die in step 2 to carry out mould assembly, adjust upper male mould and lower cavity die it
Between clamp force so that upper male mould in recessed model cavity half melt zinc-containing alloy melt apply minute-pressure；
4) clamp force in step 3) between upper male mould and lower cavity die, is maintained, is opened after the solidification of half melt zinc-containing alloy melt
It takes out, obtains zinc-containing alloy axle sleeve.
2. a kind of half melt minute-pressure of middle-size and small-size zinc-containing alloy axle sleeve according to claim 1 molds preparation method, special
Sign is: the method for half melt zinc-containing alloy melt is prepared in step 1) are as follows: firstly, to zinc-containing alloy continuous heating to completely molten
Change, secondly, the zinc-containing alloy being completely melt is cooled under its liquidus temperature 40-50 DEG C, finally, maintaining constant temperature and abundant
Stirring makes zinc-containing alloy melt composition paste in 3-5 minutes, obtains half melt zinc-containing alloy melt.
3. a kind of half melt minute-pressure of middle-size and small-size zinc-containing alloy axle sleeve according to claim 1 molds preparation method, special
Sign is: mold is metal pattern die, is first preheated to mold before half melt zinc-containing alloy melt is quantitatively injected in step 2
180-200℃。
4. a kind of half melt minute-pressure of middle-size and small-size zinc-containing alloy axle sleeve according to claim 1 molds preparation method, special
Sign is: in step 2, the quality of the half melt zinc-containing alloy melt injected into the recessed model cavity of mold is required preparation
1.05-1.10 times of zinc-containing alloy axle sleeve quality.
5. a kind of half melt minute-pressure of middle-size and small-size zinc-containing alloy axle sleeve according to claim 1 molds preparation method, special
Sign is: the depth of recessed model cavity is greater than the zinc-containing alloy axle sleeve height 3-5mm of required preparation in mold；Described in step 3)
Minute-pressure refers to that adjustment clamp force enters upper male mould under recessed model cavity 3-5mm state, and upper male mould is to half in recessed model cavity
The pressure that melt zinc-containing alloy melt generates.
6. a kind of half melt minute-pressure of middle-size and small-size zinc-containing alloy axle sleeve according to claim 1 molds preparation method, special
Sign is: the upper male mould of mold is equipped with vent plug.
7. a kind of half melt minute-pressure of middle-size and small-size zinc-containing alloy axle sleeve according to claim 1 molds preparation method, special
Sign is: in step 4), maintaining the time of the clamp force in step 3) between upper male mould and lower cavity die is 1.0-2.0 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811068785.0A CN109175291A (en) | 2018-09-13 | 2018-09-13 | A kind of half melt minute-pressure molding preparation method of middle-size and small-size zinc-containing alloy axle sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811068785.0A CN109175291A (en) | 2018-09-13 | 2018-09-13 | A kind of half melt minute-pressure molding preparation method of middle-size and small-size zinc-containing alloy axle sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN109175291A true CN109175291A (en) | 2019-01-11 |
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| CN201811068785.0A Pending CN109175291A (en) | 2018-09-13 | 2018-09-13 | A kind of half melt minute-pressure molding preparation method of middle-size and small-size zinc-containing alloy axle sleeve |
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Citations (5)
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|---|---|---|---|---|
| EP2574411A2 (en) * | 2011-09-30 | 2013-04-03 | T.C.S. Molding Systems S.P.A. | Rheocasting method and apparatus |
| WO2015053373A1 (en) * | 2013-10-09 | 2015-04-16 | 国立大学法人東北大学 | Semisolid casting and forging device and method, and cast and forged product |
| CN105344973A (en) * | 2015-11-13 | 2016-02-24 | 燕山大学 | Magnesium alloy semi-solid state blank preparing device and method |
| CN106735065A (en) * | 2016-12-27 | 2017-05-31 | 昆明理工大学 | A kind of shaping dies of semi-solid rheological extrusion casint shaft sleeve parts |
| CN206405409U (en) * | 2016-12-27 | 2017-08-15 | 昆明理工大学 | A kind of shaping dies of semi-solid rheological extrusion casint shaft sleeve parts |
-
2018
- 2018-09-13 CN CN201811068785.0A patent/CN109175291A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2574411A2 (en) * | 2011-09-30 | 2013-04-03 | T.C.S. Molding Systems S.P.A. | Rheocasting method and apparatus |
| WO2015053373A1 (en) * | 2013-10-09 | 2015-04-16 | 国立大学法人東北大学 | Semisolid casting and forging device and method, and cast and forged product |
| CN105344973A (en) * | 2015-11-13 | 2016-02-24 | 燕山大学 | Magnesium alloy semi-solid state blank preparing device and method |
| CN106735065A (en) * | 2016-12-27 | 2017-05-31 | 昆明理工大学 | A kind of shaping dies of semi-solid rheological extrusion casint shaft sleeve parts |
| CN206405409U (en) * | 2016-12-27 | 2017-08-15 | 昆明理工大学 | A kind of shaping dies of semi-solid rheological extrusion casint shaft sleeve parts |
Non-Patent Citations (3)
| Title |
|---|
| 王怀林: "《汽车典型零部件的铸造工艺》", 31 August 2003, 北京理工大学出版社 * |
| 蔡珣: "《材料科学与工程基础》", 31 July 2010, 上海交通大学出版社 * |
| 高存贞，杨涤心: "高铝锌合金研究现状及进展", 《热加工工艺》 * |
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Application publication date: 20190111 |
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