CN107775289A - Hollow valve for filling low-melting alloy and preparation method thereof - Google Patents
Hollow valve for filling low-melting alloy and preparation method thereof Download PDFInfo
- Publication number
- CN107775289A CN107775289A CN201711009916.3A CN201711009916A CN107775289A CN 107775289 A CN107775289 A CN 107775289A CN 201711009916 A CN201711009916 A CN 201711009916A CN 107775289 A CN107775289 A CN 107775289A
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- hollow valve
- melting alloy
- low
- finished product
- preparation
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C25/00—Alloys based on beryllium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Valve Housings (AREA)
Abstract
The invention discloses a kind of preparation method of the hollow valve for filling low-melting alloy, the low-melting alloy is made up of the Bi containing mass percent 60% and the Cd containing mass percent 40%, it is characterised in that is comprised the following steps：Step 1：The processing of hollow valve semi-finished product, the hollow valve semi-finished product are shaped as along the shape obtained by any taken in section of the central shaft of the hollow valve, and the hollow valve semi-finished product are two：Step 2：Cast in the groove of wherein any hollow valve semi-finished product the low-melting alloy；Step 3：Matched moulds welds, the hollow valve semi-finished product that the step 2 obtains and the hollow valve semi-finished product that the step 1 obtains are subjected to welding fabrication, obtain the hollow valve for filling low-melting alloy, not only manufacturing process is simple, and the precision made is high, overcome the error of traditional drilling, the casting of low-melting alloy in addition facilitates controllable.
Description
Technical field
The present invention relates to internal combustion engine part technical field, and in particular to a kind of hollow valve and its system for filling low-melting alloy
Preparation Method.
Background technology
Valve is parts essential in internal combustion engine, and it ensures internal combustion engine at work, opens and closes on time, will
Fresh flammable blender input cylinder, and the waste gas after burning is discharged into cylinder in time.Exhaust valve fills sodium technology using hollow,
Heat-sinking capability is enhanced, improves the life-span of exhaust valve.The technology of hollow valve filled with sodium mainly has German bridle deep hole to add at present
Work technology, processing method are mainly after valve forging is molded, and carry out gun drilling in bar portion, fill sodium, vacuumize, finally blocked up
Weldering, it is air gate in axle.The processing generally use drill bit in hole, this method efficiency is low, and cost is high, it is impossible to carries out pan portion cooling.
The defects of existing in view of above-mentioned existing air outlet valve, the present inventor are based on being engaged in such product design manufacture for many years
Abundant practical experience and professional knowledge, and coordinate the utilization of scientific principle, actively it is subject to research and innovation, one kind is hollow to fill to found
Valve of low-melting alloy and preparation method thereof, it is set to have more practicality.By constantly research, design, and through trying repeatedly
After making sample and improving, the present invention having practical value is created finally.
The content of the invention
It is a primary object of the present invention to, the defects of overcoming the manufacture of existing valve to exist, and provide it is a kind of it is hollow fill it is low
Valve of melting alloy and preparation method thereof, thermal conduction effect is good, thus more suitable for practicality, and with the exploitation value in industry
Value.
A kind of preparation method of the hollow valve for filling low-melting alloy, the low-melting alloy is by containing mass percent 60%
Bi and containing mass percent 40% Cd composition, comprise the following steps：
Step 1：The processing of hollow valve semi-finished product, the hollow valve semi-finished product are shaped as along the center of the hollow valve
Shape obtained by any taken in section of axle, and the hollow valve semi-finished product are two：
Step 2：Cast in the groove of wherein any hollow valve semi-finished product the low-melting alloy；
Step 3：Matched moulds welds, by the hollow valve semi-finished product that the step 2 obtains and the hollow gas that the step 1 obtains
Door semi-finished product carry out welding fabrication, obtain the hollow valve for filling low-melting alloy.
As a kind of perferred technical scheme, the step 1 comprises the following steps：
A, the mould of the hollow valve semi-finished product blank shape is made according to the shape and size of the blank drawing of product；
B, blanking：The raw material of melting are cast in the mould；
C, it is cooled and shaped；
D, the demoulding is handled；
E, finish：The product obtained to the D carries out surface grinding process, is processed into the hollow valve of design standard requirement
External dimensions precision.
As a kind of perferred technical scheme, in the B, before blanking in the mould Cast-in-place hardfacing releasing agent.
As a kind of perferred technical scheme, in the step 2, at normal temperatures and pressures, toward the groove in die casting institute
Low-melting alloy is stated, the upper surface of the low-melting alloy and the surface of the hollow valve semi-finished product are in same plane.
As a kind of perferred technical scheme, the low-melting alloy accounts for the 1/4-1/2 of the hollow sump volume.
As a kind of perferred technical scheme, it is described to be welded as thermocompression bonding in the step 3.
As a kind of perferred technical scheme, it is 400~500 DEG C by the temperature of the thermocompression bonding, pressure is 8~15 kilograms
Power/millimeter2。
As a kind of perferred technical scheme, obtained according to the preparation method of the above-mentioned hollow valve for filling low-melting alloy
The hollow valve for filling low-melting alloy.
Using above-mentioned technical proposal, following technique effect can be obtained：
Valve is divided into by equal two parts using the axis center of therefrom air gate, low melting point of being cast in the groove of a copy of it
Alloy, then welding fabrication is carried out, not only manufacturing process is simple, and the precision made is high, overcomes the error of traditional drilling, separately
The casting of outer low-melting alloy facilitates controllable.
Brief description of the drawings
Fig. 1 is the structural representation of hollow valve semi-finished product in the present invention；
Fig. 2 is the preparation method procedure chart of the hollow valve for filling low-melting alloy of the present invention；
Wherein, 1- hollow valves semi-finished product, the hollow valves for filling low-melting alloy of 2-, 3- grooves, 4- low-melting alloys.
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, to foundation
The present invention proposes a kind of hollow valve 2 for filling low-melting alloy and preparation method thereof its embodiment, feature and its effect,
Describe in detail as after.
The invention discloses a kind of preparation method of the hollow valve 2 for filling low-melting alloy, low-melting alloy 4 is by containing quality
The Bi of percentage 60% and the Cd compositions containing mass percent 40%, or the conjunction of other fusing points any value between 90-200 DEG C
Gold, comprise the following steps：
Step 1：The processing of hollow valve semi-finished product 1, hollow valve semi-finished product 1 are shaped as appointing along the central shaft of hollow valve
Shape obtained by one taken in section, and hollow valve semi-finished product 1 are two, i.e. hollow valve semi-finished product 1 are finished product hollow valve
The half intercepted along any shaft section：
Step 2：Casting low-melting alloy 4, i.e. finished product hollow valve in the groove 3 of wherein any hollow valve semi-finished product 1
Do not cast 1 group of the hollow valve semi-finished product of low-melting alloy 4 by the hollow valve semi-finished product 1 and one of a casting low-melting alloy 4
Into；
Step 3：Matched moulds is welded, and the hollow valve semi-finished product 1 that step 2 obtains and the hollow valve semi-finished product 1 that step 1 obtains are entered
Row welding fabrication, obtain the hollow valve 2 for filling low-melting alloy.
As a kind of perferred technical scheme, step 1 comprises the following steps：
A, the mould of the blank shape of hollow valve semi-finished product 1 is made according to the shape and size of the blank drawing of product；
B, blanking：The raw material of melting are cast in mould；
C, it is cooled and shaped；
D, the demoulding is handled；
E, finish：The product obtained to D carries out surface grinding process, is processed into the outside of the hollow valve of design standard requirement
Dimensional accuracy.
As a kind of perferred technical scheme, in B, before blanking in mould Cast-in-place hardfacing releasing agent, be advantageous to the later stage
The demoulding.
As a kind of perferred technical scheme, in step 2, at normal temperatures and pressures, toward groove 3 in die casting low-melting alloy
4, the upper surface of low-melting alloy 4 is in same plane with the surface of hollow valve semi-finished product 1, is easy to two semi-finished product of later stage
Welding fabrication.
As a kind of perferred technical scheme, low-melting alloy 4 accounts for the 1/4-1/2 of the volume of groove 3.
As a kind of perferred technical scheme, in step 3, it is welded as thermocompression bonding.
As a kind of perferred technical scheme, by the temperature of thermocompression bonding be 400~500 DEG C, pressure be 8~15 kilograms/
Millimeter2。
As a kind of perferred technical scheme, obtained according to the preparation method of the above-mentioned hollow valve 2 for filling low-melting alloy
To the hollow valve 2 for filling low-melting alloy.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit according to the present invention
Any simple modification, equivalent change and modification made to above example, in the range of still falling within technical solution of the present invention.
Claims (8)
1. a kind of preparation method of the hollow valve for filling low-melting alloy, the low-melting alloy（4）By containing mass percent 60%
Bi and containing mass percent 40% Cd composition, it is characterised in that comprise the following steps：
Step 1：Hollow valve semi-finished product（1）Processing, the hollow valve semi-finished product（1）Be shaped as along the hollow valve
Central shaft any taken in section obtained by shape, and hollow valve semi-finished product（1）For two：
Step 2：Any hollow valve semi-finished product wherein（1）Groove（3）The interior casting low-melting alloy（4）；
Step 3：Matched moulds welds, the hollow valve semi-finished product that the step 2 is obtained（1）The sky obtained with the step 1
Core valve semi-finished product（1）Welding fabrication is carried out, obtains the hollow valve for filling low-melting alloy（2）.
2. the preparation method of the hollow valve for filling low-melting alloy according to claim 1, it is characterised in that the step
1 comprises the following steps：
A, the hollow valve semi-finished product are made according to the shape and size of the blank drawing of product（1）The mould of blank shape；
B, blanking：The raw material of melting are cast in the mould；
C, it is cooled and shaped；
D, the demoulding is handled；
E, finish：The product obtained to the D carries out surface grinding process, is processed into the hollow valve of design standard requirement
External dimensions precision.
3. the preparation method of the hollow valve for filling low-melting alloy according to claim 2, it is characterised in that in the B,
Before blanking in the mould Cast-in-place hardfacing releasing agent.
4. the preparation method of the hollow valve for filling low-melting alloy according to claim 1, it is characterised in that the step
In 2, at normal temperatures and pressures, toward the groove（3）Low-melting alloy described in interior die casting（4）, the low-melting alloy（4）It is upper
Surface and the hollow valve semi-finished product（1）Surface be in same plane.
5. the preparation method of the hollow valve for filling low-melting alloy according to claim 4, it is characterised in that the eutectic
Point alloy（4）Account for the groove（3）The 1/4-1/2 of volume.
6. the preparation method of the hollow valve for filling low-melting alloy according to claim 1, it is characterised in that the step
It is described to be welded as thermocompression bonding in 3.
7. the preparation method of the hollow valve for filling low-melting alloy according to claim 6, it is characterised in that by the heat
The temperature of pressure welding is 400~500 DEG C, and pressure is 8~15 kilograms/millimeter2。
8. the hollow low melting point of filling that the preparation method of the hollow valve for filling low-melting alloy according to claim 1 obtains is closed
The valve of gold（2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009916.3A CN107775289A (en) | 2017-10-25 | 2017-10-25 | Hollow valve for filling low-melting alloy and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009916.3A CN107775289A (en) | 2017-10-25 | 2017-10-25 | Hollow valve for filling low-melting alloy and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107775289A true CN107775289A (en) | 2018-03-09 |
Family
ID=61435258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711009916.3A Pending CN107775289A (en) | 2017-10-25 | 2017-10-25 | Hollow valve for filling low-melting alloy and preparation method thereof |
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| Country | Link |
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| CN (1) | CN107775289A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1189574A (en) * | 1997-01-29 | 1998-08-05 | 富士乌兹克斯株式会社 | Hollow valve in internal combustion engine |
| CN102642117A (en) * | 2012-04-20 | 2012-08-22 | 山西斯普瑞机械制造有限公司 | High-performance valve body of proportional servo valve and manufacturing method thereof |
| EP2541001A1 (en) * | 2010-02-26 | 2013-01-02 | Mitsubishi Heavy Industries, Ltd. | Method for producing metallic-sodium-filled engine valve |
| CN103122780A (en) * | 2011-11-20 | 2013-05-29 | 扬州光辉内燃机配件有限公司 | Air valve |
| CN203488220U (en) * | 2013-09-29 | 2014-03-19 | 安徽江淮汽车股份有限公司 | Exhaust valve structure of supercharged gasoline direct injection engine |
-
2017
- 2017-10-25 CN CN201711009916.3A patent/CN107775289A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1189574A (en) * | 1997-01-29 | 1998-08-05 | 富士乌兹克斯株式会社 | Hollow valve in internal combustion engine |
| EP2541001A1 (en) * | 2010-02-26 | 2013-01-02 | Mitsubishi Heavy Industries, Ltd. | Method for producing metallic-sodium-filled engine valve |
| CN103122780A (en) * | 2011-11-20 | 2013-05-29 | 扬州光辉内燃机配件有限公司 | Air valve |
| CN102642117A (en) * | 2012-04-20 | 2012-08-22 | 山西斯普瑞机械制造有限公司 | High-performance valve body of proportional servo valve and manufacturing method thereof |
| CN203488220U (en) * | 2013-09-29 | 2014-03-19 | 安徽江淮汽车股份有限公司 | Exhaust valve structure of supercharged gasoline direct injection engine |
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Application publication date: 20180309 |
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