CN102847916A - Method for forming vacuum suction castings - Google Patents
Method for forming vacuum suction castings Download PDFInfo
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- CN102847916A CN102847916A CN2012103424251A CN201210342425A CN102847916A CN 102847916 A CN102847916 A CN 102847916A CN 2012103424251 A CN2012103424251 A CN 2012103424251A CN 201210342425 A CN201210342425 A CN 201210342425A CN 102847916 A CN102847916 A CN 102847916A
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- crystallizer
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- compressed air
- vacuum
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Abstract
The invention belongs to the technical field of casting, and relates to a method for forming vacuum suction castings in vacuum suction casting for copper alloy or other alloy with the low melting point. The method includes that a tee coupling is mounted on a vacuum pipeline of a crystallizer of a vacuum suction casting machine, a first end of the tee coupling is connected with a cavity of the crystallizer, a second end of the tee coupling is connected with a vacuum container, and a third end of the tee coupling is connected with a compressed air source by a compressed air control switch; and suction casting is started, the vacuum container is close after the suction casting is completed, and the compressed air control switch is switched on to cool and pressurize a casting in the cavity of the crystallizer until the casting is completely separated from the crystallizer, and the pressure applied to the casting ranges from 0.3MPa to 0.5MPa. The method has the advantages that a vacuum system is modified, the compressed air with the pressure ranging from 0.3MPa to 0.5MPa is added for assisting in cooling and forming, and forming time for the casting is shortened to 1-2 minutes from the original 6-8 minutes after the vacuum system is modified; only one operator at the station is required instead of two operators in the original mode; and workload for repairing the crystallizer and rejection rate of the crystallizer are halved.
Description
Technical field
The invention belongs to casting technology field, relate to a kind of foundry goods removing from mould method in the casting of copper alloy and other low-melting alloy suction pouring.
Background technology
Suction pouring is a kind ofly to set up vacuum by vacuum system in the casting mold die cavity, by pressure differential molten metal from bottom to top is pressed into die cavity, carries out the casting method of coagulation forming under the cooling of recirculated water.Process for suction casting is the effective way that solves bar pore, shrinkage cavity and porosity and dreg defect.
Suction pouring equipment is suction pouring machine, is comprised of several parts such as main frame, vacuum extractor, cooling water system, crystallizer, switch boards.Our employed suction pouring machine is portable.
The key component of suction pouring machine is crystallizer, and crystallizer can be described as again the suction casting mould, and foundry goods is moulding in the crystallizer die cavity.Crystallizer is by work cover, overcoat, water pipe and vacuumize trunnion etc. and form.The total figure of crystallizer sees Fig. 1.
The periphery of inner wall water cooling of crystallizer (being water-cooled metal mould), the crystallizer end opening immerses in the molten metal, its vacuum system that connects suitable for reading, molten metal rises up into crystallizer internal cavity and reach a certain height under atmospheric action, the crystallizer inner metal liquid is solidified by export-oriented center, after solidifying, crystallizer is risen, shift out liquid level, take out foundry goods.
Generally, the foundry goods removing from mould, the crystallizer flange is manually knocked in main dependence, and by knocking the vibrations of generation, under the booster action of foundry goods self gravitation, foundry goods is deviate from from casting mold, and the major defect of the method is, foundry goods removing from mould process difficulty, production efficiency is low.Artificial repeatedly knock the crystallizer flange, the sealing of damage crystallizer water-cooling circulating system causes the crystallizer fault rate high.
Summary of the invention
The objective of the invention is to alleviate operator's work workload, improve casting process production efficiency, reduce a kind of suction pouring foundry goods removing from mould method that crystallizer (being water-cooled metal mould) is consumed.
The technology of the present invention solution is, at first at the vacuum line of suction pouring machine crystallizer a three-way connection is installed, one end and the crystallizer die cavity of three-way connection join, and one at two ends and vacuum tank join in addition, and another joins by compressed air gauge tap and compressed air gas source; Then, begin to inhale casting, inhale after casting finishes, close vacuum tank, open the compressed air gauge tap, the foundry goods in the crystallizer die cavity cools off and pressurizes, and pressure is 0.3-0.5MPa, until foundry goods thoroughly breaks away from crystallizer.
The advantage that the present invention has and beneficial effect, the present invention increases the auxiliary cooling of compressed air and the removing from mould of 0.3-0.5MPa by to the improvement of vacuum system, and the foundry goods removing from mould time is by original 68 minutes, reduces to 12 minutes after the improvement.The operating personnel of this station reduce to 1 people by 2 original people.Reclamation work amount and the scrappage of crystallizer all reduce 50%.
Description of drawings
Fig. 1 is the crystallizer schematic diagram of suction pouring machine;
Fig. 2 is the technical solution of the present invention schematic diagram;
Fig. 3 is foundry goods removing from mould process phase I schematic diagram of the present invention;
Fig. 4 is foundry goods removing from mould process second stage schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is elaborated.
Vacuum line on the crystallizer 2 of original suction pouring machine is installed a three-way connection 1, one end and the crystallizer die cavity 3 of three-way connection 1 join, one at two ends join by vacuum switch 7 and vacuum tank 5 in addition, and another joins by compressed air gauge tap 6 and compressed air gas source 4; The operating pressure of compressed air gas source 4 is 0.3-0.5MPa.As shown in Figure 2.
The operation principle of invention:
The operation principle signal is such as Fig. 3, and is shown in Figure 4.In the casting process, after foundry goods suction casting is finished, close vacuum switch, foundry goods 8 is at first under the cooling of recirculated water 9, solidify gradually, then shrink slowly, foundry goods progressively produces small separating with water mold after shrinking, this moment recirculated water to the cooling effect of foundry goods since crystallizer sharply reduce with producing small separation between the foundry goods.For the removing from mould process that makes foundry goods time saving and energy saving, open the compressed air of 0.3-0.5MPa, compressed air 10 enters with producing small gap between the foundry goods along crystallizer, under the quick cooling of compressed air 10, accelerate foundry goods and further produce Solid State Contraction, foundry goods is when bearing self gravitation, be subject to compressed air to the downward applied pressure of foundry goods, the size of this pressure can be controlled by adjusting compressed-air actuated switch, guarantee smooth removing from mould, prevent from simultaneously that casting fin, knob from splashing to hurt sb.'s feelings.
Claims (1)
1. suction pouring foundry goods removing from mould method, it is characterized in that, at first at the vacuum line of suction pouring machine crystallizer a three-way connection is installed, one end and the crystallizer die cavity of three-way connection join, one at two ends and vacuum tank join in addition, and another joins by compressed air gauge tap and compressed air gas source; Then, begin to inhale casting, inhale after casting finishes, close vacuum tank, open the compressed air gauge tap, the foundry goods in the crystallizer die cavity cools off and pressurizes, and pressure is 0.3-0.5MPa, until foundry goods thoroughly breaks away from crystallizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210342425.1A CN102847916B (en) | 2012-09-14 | 2012-09-14 | A kind of suction pouring foundry goods removing from mould method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210342425.1A CN102847916B (en) | 2012-09-14 | 2012-09-14 | A kind of suction pouring foundry goods removing from mould method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102847916A true CN102847916A (en) | 2013-01-02 |
| CN102847916B CN102847916B (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210342425.1A Active CN102847916B (en) | 2012-09-14 | 2012-09-14 | A kind of suction pouring foundry goods removing from mould method |
Country Status (1)
| Country | Link |
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| CN (1) | CN102847916B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493344A (en) * | 2016-12-27 | 2017-03-15 | 惠州市朝鲲科技有限公司 | A kind of pressure booster blower impeller forming machine |
| CN115401185A (en) * | 2021-05-27 | 2022-11-29 | 科华控股股份有限公司 | Explosion-proof vacuum suction casting system filled with compressed air and working method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06182520A (en) * | 1992-10-23 | 1994-07-05 | Toyota Motor Corp | Suction casting method |
| JPH1015657A (en) * | 1996-07-05 | 1998-01-20 | Hitachi Metals Ltd | Method and device for detecting molten metal surface in vacuum suction casting |
| CN1960822A (en) * | 2004-04-01 | 2007-05-09 | 新东工业株式会社 | Method and device for pouring molten metal in vacuum molding and casting |
| CN101899599A (en) * | 2010-07-23 | 2010-12-01 | 哈尔滨工程大学 | Preparation method of magnesium and porous beta-calcium phosphate composite material and vacuum suction casting instrument |
| CN202359462U (en) * | 2011-12-08 | 2012-08-01 | 上海伊索热能技术有限公司 | Improved demoulding device suitable for wet vacuum adsorption-filtration moulding |
-
2012
- 2012-09-14 CN CN201210342425.1A patent/CN102847916B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06182520A (en) * | 1992-10-23 | 1994-07-05 | Toyota Motor Corp | Suction casting method |
| JPH1015657A (en) * | 1996-07-05 | 1998-01-20 | Hitachi Metals Ltd | Method and device for detecting molten metal surface in vacuum suction casting |
| CN1960822A (en) * | 2004-04-01 | 2007-05-09 | 新东工业株式会社 | Method and device for pouring molten metal in vacuum molding and casting |
| CN101899599A (en) * | 2010-07-23 | 2010-12-01 | 哈尔滨工程大学 | Preparation method of magnesium and porous beta-calcium phosphate composite material and vacuum suction casting instrument |
| CN202359462U (en) * | 2011-12-08 | 2012-08-01 | 上海伊索热能技术有限公司 | Improved demoulding device suitable for wet vacuum adsorption-filtration moulding |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493344A (en) * | 2016-12-27 | 2017-03-15 | 惠州市朝鲲科技有限公司 | A kind of pressure booster blower impeller forming machine |
| CN106493344B (en) * | 2016-12-27 | 2019-03-01 | 惠州市朝鲲科技有限公司 | A kind of pressure booster blower impeller molding machine |
| CN115401185A (en) * | 2021-05-27 | 2022-11-29 | 科华控股股份有限公司 | Explosion-proof vacuum suction casting system filled with compressed air and working method thereof |
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| Publication number | Publication date |
|---|---|
| CN102847916B (en) | 2015-08-05 |
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| C14 | Grant of patent or utility model | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 710021 Xu Jia Bay, Xi'an, Shaanxi, Beijiao Patentee after: AECC AVIATION POWER CO,LTD. Address before: 710021 Xu Jia Bay, Xi'an, Shaanxi, Beijiao Patentee before: AVIC AVIATION ENGINE Corp.,PLC Address after: 710021 Xu Jia Bay, Xi'an, Shaanxi, Beijiao Patentee after: AVIC AVIATION ENGINE Corp.,PLC Address before: 710021 Xu Jia Bay, Xi'an, Shaanxi, Beijiao Patentee before: XI'AN AVIATION POWER Co.,Ltd. |
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Effective date of registration: 20230516 Address after: Room 2807, Shaanxi Water Building, No. 2206 Hongqi Road, Economic and Technological Development Zone, Xi'an City, Shaanxi Province, 710000 Patentee after: Xi'an Gangyan Gaona Aviation Components Co.,Ltd. Address before: 710021 Xu Jia Bay, Xi'an, Shaanxi, Beijiao Patentee before: AECC AVIATION POWER CO,LTD. |
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| TR01 | Transfer of patent right |