CN109986057A - Domestic air conditioning shut-off valve made of a kind of aluminium alloy and preparation method thereof - Google Patents
Domestic air conditioning shut-off valve made of a kind of aluminium alloy and preparation method thereof Download PDFInfo
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- CN109986057A CN109986057A CN201910329780.7A CN201910329780A CN109986057A CN 109986057 A CN109986057 A CN 109986057A CN 201910329780 A CN201910329780 A CN 201910329780A CN 109986057 A CN109986057 A CN 109986057A
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- Prior art keywords
- valve
- shut
- air conditioning
- domestic air
- copper pipe
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Classifications
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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
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
Abstract
The embodiment of the present invention provides a kind of production method of domestic air conditioning shut-off valve made of aluminium alloy, and the production method of domestic air conditioning shut-off valve made of a kind of aluminium alloy includes: that copper pipe is put into the stop valve with mold is intracavitary；Molten aluminum injection stop valve is intracavitary, casting is completed, molten aluminum pours into an integrated entity in the intracavitary solidification of stop valve and with copper pipe；The connection type for enabling aluminum alloy to shut-off valve and copper pipe is to be cast as an entirety with copper pipe when aluminium alloy shut-off valve forms, and avoids the bad situation of the quality welded and will appear.
Description
Technical field
The present invention relates to domestic air conditioning shut-off valve and its production made of refrigeration appliance field more particularly to a kind of aluminium alloy
Method.
Background technique
Air-conditioner stop valve use in commercial refrigeration system, civilian and industrial air-conditioning equipment, production air control valve frequently with etc.
Warm die forging method manufacture, this technique require height, and mold materials valuableness, the processing difficulties, mould of isothermal forging to business equipment
It is complicated to have heating device；Furthermore Cu alloy material production is all made of in industry, material cost is higher, and process flowing line is longer；And
Also often there is leakage phenomenon in use, although existing aluminium alloy air-conditioner ends valve manufacturing method at present, because aluminium alloy is cut
Only the quality of connection of valve and copper pipe is poor and be difficult to practical application.Currently, aluminum-alloy household air-conditioner stop valve has started to rise, but
It still disputes on, main cause is that copper aluminium welding problem can not find always a preferred plan.
In realizing process of the present invention, at least there are the following problems in the prior art: air-conditioner stop valve copper for inventor's discovery
Aluminium welded connecting is of poor quality, and mold heating device is complicated, and equipment investment is big, complex process.
Summary of the invention
The embodiment of the present invention provides a kind of production method of domestic air conditioning shut-off valve made of aluminium alloy, and this method improves life
Efficiency, simplification of flowsheet are produced, and improves the quality of product.
The embodiment of the invention provides a kind of production method of domestic air conditioning shut-off valve made of aluminium alloy, a kind of aluminium
The production method of domestic air conditioning shut-off valve made of alloy includes:
It is intracavitary that copper pipe is put into the stop valve with mold；
Molten aluminum injection stop valve is intracavitary, casting is completed, molten aluminum is poured into the intracavitary solidification of stop valve and with copper pipe
One.
Preferably, the casting method that the production method of domestic air conditioning shut-off valve made of the aluminium alloy uses is low pressure casting
It makes, i.e., the molten aluminum surface in the mold of low pressure casting applies the air pressure or inert gas pressure of 0.01~0.05Mpa, aluminium
Liquid is risen by the stalk in mold, and injection stop valve is intracavitary.
Preferably, the mold of the low pressure casting includes: stalk and stop valve chamber；
Stalk is hollow posts figure, and the stalk top is provided with necking；
Stop valve chamber is connected to the top of necking；
Wherein, it is intracavitary to be connected to stop valve for the lower end of copper pipe.
Preferably, the production method of domestic air conditioning shut-off valve made of the aluminium alloy is squeeze cast form connection, i.e.,
Molten aluminum is stored in injection chamber, and pressure is generated in injection chamber by the movement of injection punch head, and molten aluminum indentation stop valve is intracavitary,
The shut-off valve for forming molten aluminum pours into an integrated entity with copper pipe.
Preferably, the mold of squeeze cast form connection includes: injection chamber, injection punch head and stop valve chamber,
Injection chamber is hollow column；
Injection punch head is movably arranged in injection chamber；
Stop valve chamber, connect with injection chamber；
Wherein, the upper end of copper pipe is arranged and to be enclosed in stop valve intracavitary.
Preferably, the mold of squeeze cast form connection further include: casting mold, the injection chamber and are cut injection punch head
Only valve-type chamber is arranged in casting mold；The movable mold half for accommodating copper pipe, is removably docking together with casting mold；Mandril, activity are set
It sets in movable mold half, is connect with the lower end of copper pipe.
Preferably, after the shut-off valve that molten aluminum is formed is connect with copper pipe, by shut-off valve pressure maintaining crystallization and freezing, mobile activity half
Mould is pushed into mandril, shut-off valve is integrally removed with copper pipe.
Preferably, the production method of domestic air conditioning shut-off valve made of the aluminium alloy further include: pouring temperature is set as
660-680 DEG C, 300-330 DEG C of temperature of mold production, production work pressure 65-70t, firing rate 38000-42000mm/s.
Preferably, the outside of the copper pipe upper end has the positioning step of connection shut-off valve.
Preferably, domestic air conditioning shut-off valve made of a kind of aluminium alloy includes: that the copper pipe to pour into an integrated entity and aluminium alloy are cut
Only valve.
Above-mentioned technical proposal has the following beneficial effects: to be poured because being embedded in shut-off valve using copper pipe, instead of
The technological means and low pressure casting of traditional welding procedure and the use of squeeze cast form connecting mold, so reaching
Improve the technical effect of shut-off valve quality and production efficiency.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the mode host visual pattern of the embodiment of the present invention one；
Fig. 2 is the mode host visual pattern of the embodiment of the present invention two；
Drawing reference numeral: 1, copper pipe；2, stop valve chamber；3, stalk；4, injection chamber；5, injection punch head；6, casting mold；7, living
Dynamic half module；8, mandril；9, air inlet；10, molten aluminum；11, crucible；12, sealing cover；14, necking.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention provides a kind of production method of domestic air conditioning shut-off valve made of aluminium alloy, a kind of aluminium
The production method of domestic air conditioning shut-off valve made of alloy includes:
It is intracavitary that copper pipe 1 is put into the stop valve with mold, stop valve chamber is for being poured shut-off valve；It can make in this way
The connection type of aluminium alloy shut-off valve and copper pipe is to be cast as an entirety with copper pipe when the molding of aluminium alloy shut-off valve, is kept away
Exempt to weld the bad situation of the quality that will appear；
Molten aluminum is injected in stop valve chamber 2, casting is completed, molten aluminum is poured into the intracavitary solidification of stop valve and with copper pipe
One；It is cast using special mold, the quality of shut-off valve can be improved, and large batch of can produce.
Preferably, as shown in Figure 1, the casting side that the production method of domestic air conditioning shut-off valve made of the aluminium alloy uses
Method is low pressure casting, i.e., the molten aluminum surface in the mold of low pressure casting applies the air pressure or inertia of 0.01~0.05Mpa
Gas pressure, molten aluminum are risen by the stalk in mold, and injection stop valve is intracavitary；Molten aluminum is slowly opened from the lower part of type chamber
Begin to fill, be solidified after keeping the pressure of a period of time.It is solidified since shut-off valve top to cast gate direction, gate portions solidification is
Stop pressurization.Copper pipe and shut-off valve are just finally cast as an entirety when shut-off valve is cooled to 600 degree or less, taken from mold
Product out.But directional solidification and molten aluminum mobility are maintained, mould temperature is higher, and setting rate is slow, slightly has the production cost of casting
It improves, and needs strictly to monitor temperature, pressure etc. during casting.Therefore, higher in quality requirement, work
The method can be used in shut-off valve molding and connection under more stringent environment.
As shown in Figure 1, it is preferred that the mold of the low pressure casting includes:
Stalk 3 and stop valve chamber 2；
Stalk 3 is hollow posts figure, and the stalk top is provided with necking 14；
Stop valve chamber 3 is connected to the top of necking；
Wherein, it is intracavitary to be connected to stop valve for the lower end of copper pipe；Stalk is used to molten aluminum suck-back entering stop valve intracavitary；
Molten aluminum 10 is stored in crucible 11, by 9 air inlet of air inlet, low pressure is formed in crucible 11, by molten aluminum 10 by a liter liquid
3 suction stop valve type of pipe is intracavitary to be carried out filling type, completes the connection with copper pipe；Stop valve chamber is arranged in casting mold 13, by close
Capping 12 seals crucible 11, and subsequent pressure maintaining carries out crystallization and freezing for a period of time, and parting takes out shut-off valve and the whole of copper pipe.
This method is to be poured molten aluminum and copper pipe using the method for suck-back.
Preferably, as shown in Fig. 2, the production method of domestic air conditioning shut-off valve made of the aluminium alloy be extrusion casint at
Type connection, i.e., molten aluminum is stored in injection chamber, and pressure is generated in injection chamber by the movement of injection punch head, and molten aluminum is pressed into and is ended
Valve-type is intracavitary, and the shut-off valve for forming molten aluminum is connect with copper pipe；Or molten state aluminium alloy or semi-solid aluminium alloy are passed through into punching
Head injects in the closed shut-off valve mold cavity for being embedded with copper pipe, and high-pressure, is allowed to crystallization and freezing molding under stress, most
The method of copper pipe and shut-off valve entirety is obtained afterwards.Extrusion casint has incorporated mechanics modification, shut-off valve and copper pipe and has been transmitted by pressure
Feeding is carried out, there is good pressure effect, is connected even closer.And condensation rate is fast, similarly suitable high quality shut-off valve at
Type with connect；The connection with copper pipe is completed after type to be filled is complete.Subsequent pressure maintaining crystallization and freezing, mobile movable mold half, push-in top
Bar removes the entirety of shut-off valve and copper pipe.In die casting, high-pressure injection causes the speed for filling mold very fast, exists in this way
Full entire mold just can be filled in molten metal before any part solidification.In this way, just it is difficult the thin-walled of filling at last
Part can also improve molding and quality of connection to avoid surface discontinuity.
Preferably, as shown in Fig. 2, the mold of squeeze cast form connection includes:
Injection chamber 4, injection punch head 5 and stop valve chamber 2,
Injection chamber 4 is hollow column；
Injection punch head 5, is movably arranged in injection chamber；According to the direction of the movement of injection punch head is optional horizontal or vertical pressure
Casting machine.For horizontal plunger die casting machine because having more advantages, injection punch head 5 does horizontal back and forth movement；Especially one action recycles
Program is more easier than vertical-plunger cold chamber die-casting machine.Therefore it is preferred that horizontal plunger die casting machine.
Stop valve chamber 2, connect with injection chamber；For injection chamber for placing molten aluminum 10, injection punch head can be in injection chamber
Piston motion is done, the indoor molten aluminum indentation stop valve of injection is intracavitary；
Wherein, the upper end of copper pipe is arranged and to be enclosed in stop valve intracavitary；In die casting, high-pressure injection leads to fill mould
The speed of tool is very fast, in this way it is any it is partially solidified before molten metal full entire mold just can be filled；In this way,
The thin-walled portion for being just difficult filling at last can also improve molding and quality of connection to avoid surface discontinuity.
Preferably, the mold of squeeze cast form connection further include: casting mold 6, the injection chamber and are cut injection punch head
Only valve-type chamber is arranged in casting mold；The movable mold half 7 for accommodating copper pipe, is removably docking together with casting mold, forms entire mould
Tool；Mandril 8, is movably arranged in movable mold half, connect with the lower end of copper pipe；The power of mandril can make shut-off valve and copper pipe point
From.
Preferably, after the shut-off valve that molten aluminum is formed is connect with copper pipe, by shut-off valve pressure maintaining crystallization and freezing, mobile activity half
Mould is pushed into mandril, shut-off valve is integrally removed with copper pipe；Mold is divided into two parts by movable mold half, ensure that casting pressure
Quality facilitates the taking-up of shut-off valve at the end of die casting.
Preferably, the production method of domestic air conditioning shut-off valve made of the aluminium alloy further include: pouring temperature is set as
660-680 DEG C, 300-330 DEG C of temperature of mold production, production work pressure 65-70t, firing rate 38000-42000mm/s.When casting temperature
When degree is near 670 degree, so that aluminum alloy melt is in crystallization front temperature gradient steepening, intergranular structure's type is brilliant at column crystal, feather,
Junction consistency is improved, and mechanical property is improved；As used lower injection speed in press casting procedure, it is contemplated that
Speed should not be excessively slow when the compensation problem molten metal after shrinking far from runner section is in filling for aluminium alloy, produces in this way
Die casting will appear the defects of misrun and shrinkage porosite.Due to having different setting rates and the heart in casting center portion and cast product surface layer
Relatively slow, the core structure coarse grains in portion.The inconsistent of setting rate can make the contraction of surface part and center portion part not in this way
Occur simultaneously, the coagulated volume and solidification shrinkage amount of center portion are also significantly larger than surface part, with aluminium alloy continuous filling with
And preparatory solidification and crystallization, between the two can type at thermal stress.Higher pressure firing rate degree will allow molten metal to shrink when progress in center portion
Supplement, can cause cast product surface layer type at a large amount of crackle to avoid thermal stress；The operating temperature of mold is set in 360 in this patent
Degree, so that the quality of casting and mechanical property are best.
Preferably, the outside of the copper pipe upper end has the positioning step of connection shut-off valve；Copper pipe step structure increases
With the contact area of aluminium alloy, enhance connection reliability；And fluid origin valve body copper pipe it is whole it is longitudinal it is possible that by
The hidden danger of power exoneration, and copper pipe step can be used as reliable force part；Prevent Joint failure.
Preferably, the mold has multiple stop valve chambers；In die casting connection one can be realized by a multi-cavity mold
The multiple moldings of secondary station, a die casting, multiple connections.The production efficiency for improving molding and connection significantly is more advantageous to big
Scale mass production.
Preferably, domestic air conditioning shut-off valve made of a kind of aluminium alloy includes: that the copper pipe to pour into an integrated entity and aluminium alloy are cut
Only valve；Copper pipe and aluminium alloy shut-off valve are poured into an integrated entity, the bad situation of the quality welded and will appear is avoided.
Technical solution of the present invention bring has the beneficial effect that:
1. the aluminum-alloy household air-conditioner stop valve after casting, compared to welding, bonding strength and performance are better than weldering
Fitting.If selecting the pack alloy of higher-strength, strength of joint is close to or is more than former brass valve.Meet normal operation
Operating pressure: 3.0-4.2MPa；
2. the aluminum-alloy household air-conditioner stop valve after casting, meets the operating ambient temperature of normal operation: -30 DEG C -+120
℃；
3. economic benefit is considerable, the country produces about 100,000,000 domestic air conditionings per year, and every air-conditioning has 2 shut-off valves, every year
Need about 200,000,000 shut-off valves.Aluminium alloy is changed to the brass of 0.1KG in each shut-off valve to calculate, and can use 6280 tons of aluminium every year
Substitute 200,000,000 tons of copper.With the calculation of price of 3.75 ten thousand yuan/ton of brass, 1.4 ten thousand yuan/ton of aluminium, being often only material cost can be saved
Save 6.621 hundred million yuan.
4. improving production efficiency, the step of shut-off valve is connect with copper pipe, simplification of flowsheet are reduced.
5. improve product quality, with the method for casting, in copper pipe embedment shut-off valve, instead of traditional welding procedure,
Improve interface quality.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (10)
1. the production method of domestic air conditioning shut-off valve made of a kind of aluminium alloy, which is characterized in that a kind of aluminium alloy is made
The production method of domestic air conditioning shut-off valve include:
It is intracavitary that copper pipe is put into the stop valve with mold；
Molten aluminum injection stop valve is intracavitary, casting is completed, molten aluminum pours into an integrated entity in the intracavitary solidification of stop valve and with copper pipe.
2. the production method of domestic air conditioning shut-off valve made of aluminium alloy as described in claim 1, which is characterized in that the aluminium
The casting method that the production method of domestic air conditioning shut-off valve uses made of alloy is low pressure casting, i.e., in the mold of low pressure casting
Interior molten aluminum surface applies the air pressure or inert gas pressure of 0.01~0.05Mpa, and molten aluminum passes through the stalk in mold
Rise, injection stop valve is intracavitary.
3. the production method of domestic air conditioning shut-off valve made of aluminium alloy as claimed in claim 2, which is characterized in that described low
The mold that die casting is made includes: stalk and stop valve chamber；
Stalk is hollow posts figure, and the stalk top is provided with necking；
Stop valve chamber is connected to the top of necking；
Wherein, it is intracavitary to be connected to stop valve for the lower end of copper pipe.
4. the production method of domestic air conditioning shut-off valve made of aluminium alloy as described in claim 1, which is characterized in that the aluminium
The production method of domestic air conditioning shut-off valve made of alloy is squeeze cast form connection, i.e., molten aluminum is stored in injection chamber, by
The movement of injection punch head generates pressure in injection chamber, by molten aluminum indentation stop valve it is intracavitary, make molten aluminum formed shut-off valve with
Copper pipe pours into an integrated entity.
5. the production method of domestic air conditioning shut-off valve made of aluminium alloy as claimed in claim 4, which is characterized in that described to squeeze
The mold of pressure casting and forming connection includes: injection chamber, injection punch head and stop valve chamber,
Injection chamber is hollow column；
Injection punch head is movably arranged in injection chamber；
Stop valve chamber, connect with injection chamber；
Wherein, the upper end of copper pipe is arranged and to be enclosed in stop valve intracavitary.
6. the production method of domestic air conditioning shut-off valve made of aluminium alloy as claimed in claim 4, which is characterized in that described to squeeze
Press the mold of casting and forming connection further include: casting mold, the injection chamber, injection punch head and stop valve chamber are arranged in casting mold；
The movable mold half for accommodating copper pipe, is removably docking together with casting mold；Mandril is movably arranged in movable mold half, with copper pipe
Lower end connection.
7. the production method of domestic air conditioning shut-off valve made of aluminium alloy as claimed in claim 4, which is characterized in that molten aluminum
After the shut-off valve of formation is connect with copper pipe, by shut-off valve pressure maintaining crystallization and freezing, mobile movable mold half is pushed into mandril, by shut-off valve
It is integrally removed with copper pipe.
8. the production method of domestic air conditioning shut-off valve made of aluminium alloy as described in claim 1, which is characterized in that the aluminium
The production method of domestic air conditioning shut-off valve made of alloy further include: the operating temperature for pouring mold is set as 360 ± 10 DEG C.Aluminium closes
Golden 660-680 DEG C of liquid temperature, 300-330 DEG C of temperature of mold production, production work pressure 65-70t, firing rate 38000-42000mm/s.
9. the production method of domestic air conditioning shut-off valve made of aluminium alloy as described in claim 1, which is characterized in that the copper
The outside of pipe upper end has the positioning step of connection shut-off valve.
10. domestic air conditioning shut-off valve made of a kind of aluminium alloy characterized by comprising the copper pipe and aluminium to pour into an integrated entity closes
Golden shut-off valve, the domestic air conditioning shut-off valve is using domestic air conditioning made of aluminium alloy described in any one of claims 1 to 9
The production method of shut-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910329780.7A CN109986057B (en) | 2019-04-23 | 2019-04-23 | Aluminum alloy made household air conditioner stop valve and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910329780.7A CN109986057B (en) | 2019-04-23 | 2019-04-23 | Aluminum alloy made household air conditioner stop valve and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN109986057A true CN109986057A (en) | 2019-07-09 |
| CN109986057B CN109986057B (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910329780.7A Active CN109986057B (en) | 2019-04-23 | 2019-04-23 | Aluminum alloy made household air conditioner stop valve and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114905028A (en) * | 2022-05-19 | 2022-08-16 | 深圳市宝田精工科技有限公司 | In-mold die-casting insert method and in-mold die-casting insert device based on optical communication module |
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| CN114905028A (en) * | 2022-05-19 | 2022-08-16 | 深圳市宝田精工科技有限公司 | In-mold die-casting insert method and in-mold die-casting insert device based on optical communication module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109986057B (en) | 2021-05-28 |
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