CN105855465A - Vacuum-free casting technology for metal dies - Google Patents
Vacuum-free casting technology for metal dies Download PDFInfo
- Publication number
- CN105855465A CN105855465A CN201610232473.3A CN201610232473A CN105855465A CN 105855465 A CN105855465 A CN 105855465A CN 201610232473 A CN201610232473 A CN 201610232473A CN 105855465 A CN105855465 A CN 105855465A
- Authority
- CN
- China
- Prior art keywords
- sand mold
- metal
- casting
- vacuum
- smelting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a vacuum-free casting technology for metal dies. The vacuum-free casting technology comprises the steps of S1, sand mold manufacturing; S2, die material smelting; S3, die casting; and S4, casting taking out. In the die material smelting step, die materials are selected and placed into a smelting machine for being smelted, a stirring machine stirs molten metal, metal solvents are added into the molten metal in the stirring process, nitrogen gas is guided into the smelting machine after 3-5 hours, and the molten metal is smelted for 5-8 hours in the vacuum state; in the die casting step, the molten metal is injected into a sand core from a feeder head at the lower end of a sand mold, casting stops when the molten metal flows out from a feeder head at the upper end, and then the sand mold is cooled. According to the vacuum-free casting technology, the nitrogen gas is injected for creating the vacuum environment when smelting begins, and therefore the molten metal is prevented from being oxidized; aluminum alloy slag removal covering agents and efficient solvents are added in the smelting process for modifying and homogenizing the metal, dross is skimmed after floating, and therefore the quality of the dies is higher and the quality of the castings is improved.
Description
Technical field
The present invention relates to metal die Casting Technology field, particularly relate to a kind of metal die without vacuum casting process.
Background technology
Mould, in industrial production in order to be molded, to be blow molded, to extrude, die casting or the method such as forging forming, smelting, punching press obtain various moulds and the instrument of required product.In brief, mould is used to the instrument of formed article, and this instrument is made up of various parts, and different moulds is made up of different parts.It mainly realizes the processing of article profile by the change of institute's moulding material physical state.Mould is in the majority with metalwork at present, but Mold Metal foundry goods exists some problems；Mold materials smelt time, often doping metals impurity, affect die life and outward appearance；Secondly, when casting, mould has pore doping when shaping, affects die life and outward appearance equally..
Summary of the invention
The invention aims to solve shortcoming present in prior art, and a kind of metal die proposed is without vacuum casting process.
Metal die, without vacuum casting process, comprises the following steps:
S1, sand mold make；Making mold shell sand mold, the upper and lower side at sand mold is equipped with rising head；
S2, mold materials are smelted；Choosing mold materials to render to smelt in smelting machinery, be stirred molten condition metal liquid by mixer simultaneously, stirring puts into metal solvent in molten condition metal liquid simultaneously；After 3-5h, in smelting machinery, it is filled with nitrogen makes molten condition metal liquid carry out under vacuum conditions smelting 5-8h；
S3, die casting；In core, inject molten condition metal liquid from the lower end rising head of sand mold, when molten condition metal liquid flows out from upper end rising head, stop casting, sand mold is cooled down；
S4, taking-up foundry goods；From the sand mold of cooling, take out mould i.e. complete metal die without vacuum pressing and casting.
Preferably, sand mold includes inside and outside sand mold, and outer sand mold sets casting gate and rising head, and casting gate is positioned at outer sand mold bottom, and rising head is positioned at outer sand mold top.
Preferably, metal solvent is aluminium alloy scarfing cinder coverture, efficient solvent, completes metal and go bad, make uniformly after interpolation, and scum silica frost floats, excludes.
Preferably, the shaft of mixer is lift, and the speed of mixer is 60-100 rev/min.
The present invention just pours nitrogen when smelting and starting, and manufactures vacuum environment, it is to avoid metal liquid aoxidizes, smelting: add aluminium alloy scarfing cinder coverture, efficient solvent, complete metal and go bad, make uniformly, scum silica frost floats, excludes, so that the quality of mould is higher, improve the quality of foundry goods；Sand mold includes inside and outside sand mold, and outer sand mold sets casting gate and rising head, and casting enters running channel from cast gate, overflows from rising head, it is to avoid the impurity gas in mould when casting, makes not have in mould pore, thus affects the mold use life-span.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is explained orally further.
Embodiment 1
A kind of metal die that the present embodiment proposes, without vacuum casting process, comprises the following steps:
S1, sand mold make；Making mold shell sand mold, the upper and lower side at sand mold is equipped with rising head；
S2, mold materials are smelted；Choosing mold materials to render to smelt in smelting machinery, be stirred molten condition metal liquid by mixer simultaneously, stirring puts into metal solvent in molten condition metal liquid simultaneously；After 3-5h, in smelting machinery, it is filled with nitrogen makes molten condition metal liquid carry out under vacuum conditions smelting 5-8h；The shaft of described mixer is lift, and the speed of mixer is 60 revs/min.Metal solvent is aluminium alloy scarfing cinder coverture, completes metal and go bad, make uniformly after interpolation, and scum silica frost floats, excludes.
S3, die casting；In core, inject molten condition metal liquid from the lower end rising head of sand mold, when molten condition metal liquid flows out from upper end rising head, stop casting, sand mold is cooled down；
S4, taking-up foundry goods；From the sand mold of cooling, take out mould i.e. complete metal die without vacuum pressing and casting.
Embodiment 2
A kind of metal die that the present embodiment proposes, without vacuum casting process, comprises the following steps:
S1, sand mold make；Making mold shell sand mold, the upper and lower side at sand mold is equipped with rising head；
S2, mold materials are smelted；Choosing mold materials to render to smelt in smelting machinery, be stirred molten condition metal liquid by mixer simultaneously, stirring puts into metal solvent in molten condition metal liquid simultaneously；After 3-5h, in smelting machinery, it is filled with nitrogen makes molten condition metal liquid carry out under vacuum conditions smelting 5-8h；The shaft of described mixer is lift, and the speed of mixer is 100 revs/min.Metal solvent is aluminium alloy efficient solvent, completes metal and go bad, make uniformly after interpolation, and scum silica frost floats, excludes.
S3, die casting；In core, inject molten condition metal liquid from the lower end rising head of sand mold, when molten condition metal liquid flows out from upper end rising head, stop casting, sand mold is cooled down；
S4, taking-up foundry goods；From the sand mold of cooling, take out mould i.e. complete metal die without vacuum pressing and casting.
The above; it is only the present invention preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the technical scope that the invention discloses; according to technical scheme and inventive concept equivalent or change in addition thereof, all should contain within protection scope of the present invention.
Claims (4)
1. metal die is without vacuum casting process, it is characterised in that comprise the following steps:
S1, sand mold make；Making mold shell sand mold, be provided with casting gate in the bottom of sand mold, top is provided with rising head；
S2, mold materials are smelted；Choosing mold materials to render to smelt in smelting machinery, be stirred molten condition metal liquid by mixer simultaneously, stirring puts into metal solvent in molten condition metal liquid simultaneously；After 3-5h, in smelting machinery, it is filled with nitrogen makes molten condition metal liquid carry out under vacuum conditions smelting 5-8h；
S3, die casting；In core, inject molten condition metal liquid from the lower end rising head of sand mold, when molten condition metal liquid flows out from upper end rising head, stop casting, sand mold is cooled down；
S4, taking-up foundry goods；From the sand mold of cooling, take out mould i.e. complete metal die without vacuum pressing and casting.
Metal die the most according to claim 1 is without vacuum casting process, it is characterised in that sand mold includes inside and outside sand mold, and outer sand mold sets casting gate and rising head, and casting gate is positioned at outer sand mold bottom, and rising head is positioned at outer sand mold top.
Metal die the most according to claim 1 is without vacuum casting process, it is characterised in that metal solvent is aluminium alloy scarfing cinder coverture, efficient solvent, completes metal and go bad, make uniformly after interpolation, and scum silica frost floats, excludes.
Metal die the most according to claim 1 is without vacuum casting process, it is characterised in that the shaft of mixer is lift, and the speed of mixer is 60-100 rev/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610232473.3A CN105855465A (en) | 2016-04-15 | 2016-04-15 | Vacuum-free casting technology for metal dies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610232473.3A CN105855465A (en) | 2016-04-15 | 2016-04-15 | Vacuum-free casting technology for metal dies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105855465A true CN105855465A (en) | 2016-08-17 |
Family
ID=56637708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610232473.3A Pending CN105855465A (en) | 2016-04-15 | 2016-04-15 | Vacuum-free casting technology for metal dies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105855465A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07155897A (en) * | 1993-12-02 | 1995-06-20 | Enkei Kk | Mold structure and casting method |
| US6666254B2 (en) * | 2000-03-27 | 2003-12-23 | Actech Gmbh Advanced Casting Technologies Giessereitechnologie | Method for the uphill casting of cast pieces in sand moulds with controlled solidification |
| CN101020972A (en) * | 2007-03-16 | 2007-08-22 | 魏勇 | Slag eliminating agent for aluminium or aluminium alloy |
| CN101758203A (en) * | 2008-11-12 | 2010-06-30 | 郑东海 | Process for smelting and lower-pressure casting of aluminum alloy wheel hub |
| CN102107260A (en) * | 2010-12-07 | 2011-06-29 | 陕西宏远航空锻造有限责任公司 | Method for casting large-scale K403 high-temperature alloy die for isothermal forging |
| CN102296212A (en) * | 2011-09-13 | 2011-12-28 | 成都银河动力有限公司 | P-Fe alloy type inoculant and method for applying P-Fe alloy type inoculant to aluminum-silicon alloy melting |
| CN103276262A (en) * | 2013-06-18 | 2013-09-04 | 天津松岩铝制品有限公司 | High intensity Al-Si-Cu alloy and smelting method thereof |
| CN103447462A (en) * | 2013-09-12 | 2013-12-18 | 四川四方铸造有限责任公司 | Manufacturing process of intermediate casting of diesel engine |
-
2016
- 2016-04-15 CN CN201610232473.3A patent/CN105855465A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07155897A (en) * | 1993-12-02 | 1995-06-20 | Enkei Kk | Mold structure and casting method |
| US6666254B2 (en) * | 2000-03-27 | 2003-12-23 | Actech Gmbh Advanced Casting Technologies Giessereitechnologie | Method for the uphill casting of cast pieces in sand moulds with controlled solidification |
| CN101020972A (en) * | 2007-03-16 | 2007-08-22 | 魏勇 | Slag eliminating agent for aluminium or aluminium alloy |
| CN101758203A (en) * | 2008-11-12 | 2010-06-30 | 郑东海 | Process for smelting and lower-pressure casting of aluminum alloy wheel hub |
| CN102107260A (en) * | 2010-12-07 | 2011-06-29 | 陕西宏远航空锻造有限责任公司 | Method for casting large-scale K403 high-temperature alloy die for isothermal forging |
| CN102296212A (en) * | 2011-09-13 | 2011-12-28 | 成都银河动力有限公司 | P-Fe alloy type inoculant and method for applying P-Fe alloy type inoculant to aluminum-silicon alloy melting |
| CN103276262A (en) * | 2013-06-18 | 2013-09-04 | 天津松岩铝制品有限公司 | High intensity Al-Si-Cu alloy and smelting method thereof |
| CN103447462A (en) * | 2013-09-12 | 2013-12-18 | 四川四方铸造有限责任公司 | Manufacturing process of intermediate casting of diesel engine |
Non-Patent Citations (1)
| Title |
|---|
| 魏超: "《液体火箭发动机特种铸造技术》", 31 October 2014 * |
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Application publication date: 20160817 |
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| RJ01 | Rejection of invention patent application after publication |