CN110180998A - The production technology of aluminium alloy air inlet pipe - Google Patents
The production technology of aluminium alloy air inlet pipe Download PDFInfo
- Publication number
- CN110180998A CN110180998A CN201910548174.4A CN201910548174A CN110180998A CN 110180998 A CN110180998 A CN 110180998A CN 201910548174 A CN201910548174 A CN 201910548174A CN 110180998 A CN110180998 A CN 110180998A
- Authority
- CN
- China
- Prior art keywords
- air inlet
- inlet pipe
- aluminium alloy
- sand core
- production technology
- 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
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/15—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D35/00—Equipment for conveying molten metal into beds or moulds
- B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention belongs to the manufacturing fields of engine air inlet tube, and in particular to a kind of production technology of aluminium alloy air inlet pipe.The production technology, using low-pressure casting process, comprising the following steps: (1) inner cavity sand core is made using precoated sand core production method, is dried after the coating refractory coating of inner cavity sand core surface；(2) by after drying inner cavity sand core be coated with the metal mold external mold combination sealings of thermal insulation coatings；(3) forced exhaust is carried out to the mold after sealing using vacuum pump, after vacuumizing, Al-alloy metal liquid is poured by the way of quickly filling type, after molten metal solidification, stopping pumping obtaining blank；(4) by blank by cleaning, after bulge test to get aluminium alloy air inlet pipe finished product.The technique that the present invention fills type by using forced exhaust and quickly carries out low pressure casting, greatly increases production efficiency and yield rate, the qualification rate of product is made to be increased to 98% or more.
Description
Technical field
The invention belongs to the manufacturing fields of engine air inlet tube, and in particular to a kind of life of aluminium alloy air inlet pipe
Production. art.
Background technique
Engine air inlet tube refers to the gas for needing machine burning, imports the tracheae inside machine.Air inlet pipe must protect
Enough circulation areas are demonstrate,proved, turning and the abrupt change of cross-section is avoided, improves the finish etc. of pipe surface, to reduce resistance.
At present in engine aluminum alloy air inlet pipe, water pipe production field, important process has sand casting and metal
Two kinds of type gravitational casting.The shortcomings that sand casting process is that production efficiency is lower, and energy consumption is high, product size low precision, and appearance is thick
Rough, yield rate is low.The shortcomings that metal mold gravity casting technique is that the production cycle is slow, and product yield is low, and leak is serious, is produced into
This is higher.
Summary of the invention
It in view of the deficiencies of the prior art, can the object of the present invention is to provide a kind of production technology of aluminium alloy air inlet pipe
Production efficiency is improved, is reduced energy consumption and production costs, while improving the quality and yield rate of air inlet pipe product.
The production technology of aluminium alloy air inlet pipe of the present invention, using low-pressure casting process, comprising the following steps:
(1) inner cavity sand core is made using precoated sand core production method, is dried after the coating refractory coating of inner cavity sand core surface；
(2) by after drying inner cavity sand core be coated with the metal mold external mold combination sealings of thermal insulation coatings；
(3) forced exhaust is carried out to the mold after sealing using vacuum pump, after vacuumizing, is poured by the way of quickly filling type
Al-alloy metal liquid is infused, after molten metal solidification, stopping pumping obtaining blank；
(4) by blank by cleaning, after bulge test to get aluminium alloy air inlet pipe finished product.
Wherein:
Precoated sand core production method described in step (1) uses the thermosetting phenolic resin of 40~70 mesh, gas forming amount≤9mL/
G, room temperature bending strength >=4MPa, hot bending strength >=4MPa.
Precoated sand core production method described in step (1) uses high-temperature roasting sand.
Fireproof coating described in step (1) is talcum powder.
Preferred 395 coating of Henkel of thermal insulation coatings of the outer die coating of metal mold described in step (2).
The liter liquid speed degree that type is quickly filled described in step (3) is 48~52mm/s, preferably 50mm/s, filling time 1
~2 seconds.
The aluminium alloy air inlet pipe with a thickness of 5~7mm.
The bulge test is to block product two ends, has air inlet on the plug of one end, will when increasing to certain pressure
Into the water, bubbling is exactly leakage to product, and not bubbling is simultaneously able to maintain a period of time, and non-leakage, then shows product qualification.
Compared with prior art, beneficial effects of the present invention are as follows:
The present invention is combined by inner cavity sand core with metal mold external mold, and is used forced exhaust simultaneously and quickly filled the work of type
Skill carries out low pressure casting, greatly increases production efficiency and yield rate, reduces production cost, and improves the matter of product
Amount, the air inlet pipe of preparation is flat and smooth, substantially without casting flaw, the qualification rate of product is made to be increased to 98% or more.
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated.
Embodiment 1
A kind of 6 Cylinder engine air inlet pipe, product weight 8kg, average wall thickness 5mm, material ZL107, it is desirable that appearance inner cavity is flat
It is whole smooth, no casting flaw, 5 minutes ne-leakages of 0.6MPa pressure maintaining.
The production technology of the aluminium alloy air inlet pipe, using low-pressure casting process, comprising the following steps:
(1) overlay film sand core production method is utilized, using gas forming amount≤9mL/g, room temperature bending strength >=4MPa, hot bending resistance is strong
Inner cavity sand core is made in degree >=4MPa, the thermosetting phenolic resin and high-temperature roasting sand of 40~70 mesh, and the coating of inner cavity sand core surface is slided
It is dried after mountain flour coating；
(2) by after drying inner cavity sand core be coated with the metal mold external mold combination sealing of 395 coating of Henkel；
(3) forced exhaust is carried out to the mold after sealing using vacuum pump, after vacuumizing, is poured by the way of quickly filling type
ZL107 Al-alloy metal liquid is infused, liter liquid speed degree is 50mm/s, and filling time is 2 seconds, after solidifying to molten metal, stops taking out
Gas obtains blank；
(4) blank is subjected to bulge test after cleaning at 0.6MPa.
Engine air inlet tube obtained with a thickness of 5mm, 5 minutes ne-leakages of pressure maintaining under 0.6MPa, the smooth light in appearance inner cavity
It is sliding, substantially without casting flaw, meet the requirements.Yield rate is up to 98% or more, and yield rate is up to 85%.
Embodiment 2
A kind of 6 Cylinder engine air inlet pipe, product weight 2kg, average wall thickness 5mm, material ZL107, it is desirable that appearance inner cavity is flat
It is whole smooth, no casting flaw, 5 minutes ne-leakages of 0.6MPa pressure maintaining.
The production technology of the aluminium alloy air inlet pipe, using low-pressure casting process, comprising the following steps:
(1) overlay film sand core production method is utilized, using gas forming amount≤9mL/g, room temperature bending strength >=4MPa, hot bending resistance is strong
Inner cavity sand core is made in degree >=4MPa, the thermosetting phenolic resin and high-temperature roasting sand of 40~70 mesh, and the coating of inner cavity sand core surface is slided
It is dried after mountain flour coating；
(2) by after drying inner cavity sand core be coated with the metal mold external mold combination sealing of 395 coating of Henkel；
(3) forced exhaust is carried out to the mold after sealing using vacuum pump, after vacuumizing, is poured by the way of quickly filling type
ZL107 Al-alloy metal liquid is infused, liter liquid speed degree is 50mm/s, and filling time is 1 second, after solidifying to molten metal, stops taking out
Gas obtains blank；
(4) by blank after cleaning, bulge test is carried out in 0.6MPa.
Engine air inlet tube obtained with a thickness of 5mm, 5 minutes ne-leakages of pressure maintaining under 0.6MPa, the smooth light in appearance inner cavity
It is sliding, substantially without casting flaw, meet the requirements.Yield rate is up to 99% or more, and yield rate is up to 83%.
Certainly, above content is only presently preferred embodiments of the present invention, be should not be construed as limiting to implementation of the invention
Example range.The present invention is also not limited to the example above, and those skilled in the art are in essential scope of the invention
Interior made all the changes and improvements etc., should all belong in patent covering scope of the invention.
Claims (6)
1. a kind of production technology of aluminium alloy air inlet pipe, using low-pressure casting process, it is characterised in that: the following steps are included:
(1) inner cavity sand core is made using precoated sand core production method, is dried after the coating refractory coating of inner cavity sand core surface；
(2) by after drying inner cavity sand core be coated with the metal mold external mold combination sealings of thermal insulation coatings；
(3) forced exhaust, after vacuumizing, the cast aluminum by the way of quickly filling type are carried out to the mold after sealing using vacuum pump
Alloying metal liquid, after molten metal solidification, stopping pumping obtaining blank；
(4) by blank by cleaning, after bulge test to get aluminium alloy air inlet pipe finished product.
2. the production technology of aluminium alloy air inlet pipe according to claim 1, it is characterised in that: step is covered described in (1)
Thermosetting phenolic resin of the film sand core production method using 40~70 mesh, gas forming amount≤9mL/g, room temperature bending strength >=4MPa are hot
Bending strength >=4MPa.
3. the production technology of aluminium alloy air inlet pipe according to claim 1, it is characterised in that: step is covered described in (1)
Film sand core production method uses high-temperature roasting sand.
4. the production technology of aluminium alloy air inlet pipe according to claim 1, it is characterised in that: resistance to described in step (1)
Fiery coating is talcum powder.
5. the production technology of aluminium alloy air inlet pipe according to claim 1, it is characterised in that: fast described in step (3)
The liter liquid speed degree that speed fills type is 48~52mm/s, and filling time is 1~2 second.
6. the production technology of aluminium alloy air inlet pipe according to claim 1, it is characterised in that: the aluminium alloy air inlet pipe
With a thickness of 5~7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910548174.4A CN110180998A (en) | 2019-06-24 | 2019-06-24 | The production technology of aluminium alloy air inlet pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910548174.4A CN110180998A (en) | 2019-06-24 | 2019-06-24 | The production technology of aluminium alloy air inlet pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110180998A true CN110180998A (en) | 2019-08-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910548174.4A Pending CN110180998A (en) | 2019-06-24 | 2019-06-24 | The production technology of aluminium alloy air inlet pipe |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004122134A (en) * | 2002-09-30 | 2004-04-22 | Asahi Tec Corp | Method for producing trial product for die-casting and method for trial-producing die cast product |
| CN104741580A (en) * | 2013-12-26 | 2015-07-01 | 青岛玉光精铸厂 | Low-pressure casting process of aluminum alloy turbine |
| CN105618711A (en) * | 2016-03-26 | 2016-06-01 | 山东鸿源新材料有限公司 | Casting technology of water-cooled motor shell, provided with nine turns of spiral waterways, for new energy automobile |
| CN105798262A (en) * | 2016-03-26 | 2016-07-27 | 山东鸿源新材料有限公司 | Production process for integrated type water-cooled motor shell of new energy automobile |
| CN109773160A (en) * | 2019-03-29 | 2019-05-21 | 山东鸿源新材料有限公司 | The low-pressure casting process of aluminum alloy impeller |
| CN109773117A (en) * | 2019-03-04 | 2019-05-21 | 厦门美益绿建科技有限公司 | A kind of precoated sand and damp sand room temperature film covering method |
-
2019
- 2019-06-24 CN CN201910548174.4A patent/CN110180998A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004122134A (en) * | 2002-09-30 | 2004-04-22 | Asahi Tec Corp | Method for producing trial product for die-casting and method for trial-producing die cast product |
| CN104741580A (en) * | 2013-12-26 | 2015-07-01 | 青岛玉光精铸厂 | Low-pressure casting process of aluminum alloy turbine |
| CN105618711A (en) * | 2016-03-26 | 2016-06-01 | 山东鸿源新材料有限公司 | Casting technology of water-cooled motor shell, provided with nine turns of spiral waterways, for new energy automobile |
| CN105798262A (en) * | 2016-03-26 | 2016-07-27 | 山东鸿源新材料有限公司 | Production process for integrated type water-cooled motor shell of new energy automobile |
| CN109773117A (en) * | 2019-03-04 | 2019-05-21 | 厦门美益绿建科技有限公司 | A kind of precoated sand and damp sand room temperature film covering method |
| CN109773160A (en) * | 2019-03-29 | 2019-05-21 | 山东鸿源新材料有限公司 | The low-pressure casting process of aluminum alloy impeller |
Non-Patent Citations (1)
| Title |
|---|
| 《铸造有色合金手册》编写组: "《铸造有色合金手册》", 30 April 1978, 北京：机械工业出版社 * |
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Application publication date: 20190830 |