CN110076290A - A kind of gate valve body model casting casting process - Google Patents
A kind of gate valve body model casting casting process Download PDFInfo
- Publication number
- CN110076290A CN110076290A CN201910402583.3A CN201910402583A CN110076290A CN 110076290 A CN110076290 A CN 110076290A CN 201910402583 A CN201910402583 A CN 201910402583A CN 110076290 A CN110076290 A CN 110076290A
- Authority
- CN
- China
- Prior art keywords
- mold bulk
- riser
- casting
- molten steel
- valve body
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
-
- 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
Abstract
The present invention relates to valve body casting process technical fields, and disclose a kind of gate valve body model casting casting process, including mold bulk, gate pad is fixedly installed on the left of the mold bulk, the bottom of the gate pad is fixedly installed with c-type riser corresponding with mold bulk.The gate valve body model casting casting process, the impurity on formwork surface is mixed in molten steel, it is easy to appear casting flaw, if this part of molten steel stays in the shell of valve body, it necessarily will form casting flaw, influence product quality, by being provided with the first riser and the second riser and top riser, increase the mode of riser, to accommodate this part of molten steel, to ensure that the castability of valve body, pass through anti-type runner, keep transition rounder and more smooth, molten steel can effectively be increased in the intracorporal filling speed of shell, and because of casting deformation and crackle caused by cooling when optimizing molten steel cooling, the quality and precision of the casting of mold bulk can be effectively improved.
Description
Technical field
The present invention relates to valve body casting process technical field, specially a kind of gate valve body model casting casting process.
Background technique
Gate valve belongs to the switch element in special equipment on pressure pipeline, and in fields such as petroleum, chemical industry and metallurgy, application is wide
General, the valve body and valve deck of gate valve belong to crucial pressure-bearing class part, and application field has higher requirement to it, and gate valve is one
A opening and closing element flashboard, the direction of motion and flow direction of flashboard are perpendicular, and gate valve can only make standard-sized sheet and Quan Guan, cannot make adjustments and
Throttling, gate valve are sealed by valve seat and rams contact, and usual sealing surface meeting deposited metal material is to increase wearability, such as heap
1Cr13, STL6 and stainless steel etc. are welded, flashboard has rigid flashboard and flexible disc, and according to the difference of flashboard, gate valve is divided into rigid lock
Valve and resilient gate valve.
Such part mainly uses the blank of casting and forming to be process at present, so the requirement to spray is very high,
Traditional casting technique yield rate is lower, is easy the casting flaws such as shrinkage porosite, stomata, cold shut occur in key position, seriously affects
The qualification rate of product also leaves very big security risk to client, such as the gate valve proposed in Chinese patent CN104275441B
The dedicated evaporative pattern of body casting, the invention can play the role of interference and feeding, make by increasing by a riser on valve body evaporative pattern
Each position of valve body relative equilibrium in setting time is obtained, integral strength is high, and it is not easy to break, realize the system by the way of evaporative pattern
The technique of standby steel casting, cast(ing) surface is smooth, at low cost, but still has improved space, so propose a kind of gate valve
Valve body model casting casting process solves the problems, such as to propose among the above.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of gate valve body model casting casting process, have and improve valve
The advantages that quality of body casting, reduces rejection rate, produces considerable economic benefit solves such current part and mainly adopts
It is process with the blank of casting and forming, so the requirement to spray is very high, traditional casting technique yield rate is lower, holds
Easily there are the casting flaws such as shrinkage porosite, stomata, cold shut in key position, seriously affects the qualification rate of product, also left to client
The problem of very big security risk.
(2) technical solution
To realize the above-mentioned quality for improving valve body moulding, rejection rate is reduced, considerable economic benefit purpose, this hair are produced
It is bright to provide the following technical solutions: a kind of gate valve body model casting casting process, including mold bulk, a left side for the mold bulk
Side is fixedly installed with gate pad, and the bottom of the gate pad is fixedly installed with c-type riser corresponding with mold bulk, the casting
The right side back side of mould main body is fixedly installed with the first riser, and the right side of the mold bulk is just being fixedly installed with the second riser, institute
It states and is fixedly installed with top riser at the top of mold bulk, the bottom of first riser and the second riser offers anti-type stream
Road.
Preferably, the gate pad is wedge shaped, and the left side of mold bulk is flange face, the company of mold bulk and gate pad
Mode is connect as welding.
A kind of gate valve body model casting casting process, comprising the following steps:
1) it by mold bulk, places to shaping box, shaping box and mold bulk is fixed by fixed equipment, it is fixed
After the completion, mold bulk is sealed mold bulk by sealing film, then toward fine sand is added inside shaping box, fills mold
After the completion of filling, fine sand is slightly compacted until appropriate location for main body；
2) output shaft of shaping box and vibration motor in step 1) is attached, after stable connection, starting shock motor, fortune
After row appropriate time, the fine sand inside shaping box is handled, if fine sand splashes to the top of mold bulk, then it is appropriate to root out
Fine sand, then be compacted, finally tear the sealing film in step 1)；
3) raw material are put into high temperature furnace, is melted, form molten steel after thawing, high-temperature molten steel is drained in constant temperature oven
Portion ensures the temperature of molten steel, then takes out molten steel appropriate, transport mold master into step 2 by corresponding storage device
At the top of body；
4) pouring step 3) in storage device, molten steel is filled into the inside into mold bulk by gate pad average rate, filling is to casting
After the appropriate degree of mould main body, storage device is resetted, vibration motor is restarted, and after running appropriate time, suspends vibration motor, then
Topple over storage device, the first riser, the second riser, top riser and the gate pad toward mold bulk process suitable molten steel respectively；
5) after the completion of filling in step 4) to mold bulk, at starting shock motor ten to 20 seconds, stop starting motor, it is quiet
After only cooling down appropriate time, normal-temperature water is added on the fine sand inside shaping box, accelerates the cooling of mold bulk, to mold bulk
After being cooled to room temperature, mold bulk is taken out.
Preferably, in the step 1), when filling fine sand, fine sand should be with the first riser, the second riser and top riser apart
Two to three centimetres.
Preferably, in the step 4), toward mold bulk inside filling molten steel should be to 6 the percent of mold bulk volume
Ten to percent 70.
Preferably, the anti-type runner is in circular arc, and two connection rings of the center of circle of anti-type runner and mold bulk
The center of circle is corresponding.
(3) beneficial effect
Compared with prior art, the present invention provides a kind of gate valve body model casting casting process, have it is following the utility model has the advantages that
1, the gate valve body model casting casting process mixes the impurity on formwork surface in molten steel, is easy to appear casting flaw, such as
This part of molten steel of fruit stays in the shell of valve body, necessarily will form casting flaw, influences product quality, by being provided with first
Riser and the second riser and top riser, increase the mode of riser, to accommodate this part of molten steel, to ensure that the casting of valve body
Quality keeps transition rounder and more smooth by anti-type runner, can effectively increase molten steel in the intracorporal filling speed of shell, and optimize
Because casting deformation and crackle caused by cooling, can effectively improve the quality and essence of the casting of mold bulk when molten steel is cooling
Degree.
2, the gate valve body model casting casting process, passes through the horizontal casting of mold bulk, gate placement method in valve body
There are biggish contact surface in blue position, this position, while the uniform middle flange for having wall thickness thicker, can be rapidly from riser
The molten steel come in is transferred to enclosure interior, is flowing herein by flange flow path portion bit stream to flange after molten steel passes through valve body
Throat, we are appropriate to increase wall thickness at this, has adjusted transition arc, guarantees that molten steel can be passed through with most fast speed
The region, preferably fills type, solves such current part and the blank of casting and forming is mainly used to be process, so to casting
The requirement of blank is very high, and traditional casting technique yield rate is lower, is easy the casting such as shrinkage porosite, stomata, cold shut occur in key position
The problem of making defect, seriously affecting the qualification rate of product, also leave very big security risk to client.
Detailed description of the invention
Fig. 1 is mold bulk structural schematic diagram in the present invention.
In figure: 1 mold bulk, 2 first riser, 3 top risers, 4 second riser, 5 c-type riser, 6 anti-type runners, 7 cast gates
Seat.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
A kind of gate valve body model casting casting process, including mold bulk 1, the left side of mold bulk 1 are fixedly installed with
Gate pad 7, gate pad 7 is wedge shaped, and the left side of mold bulk 1 is flange face, the connection type of mold bulk 1 and gate pad 7
For welding, the bottom of gate pad 7 is fixedly installed with c-type riser 5 corresponding with mold bulk 1, the right side back side of mold bulk 1
It is fixedly installed with the first riser 2, the right side of mold bulk 1 is just being fixedly installed with the second riser 4, and the top of mold bulk 1 is fixed
Top riser 3 is installed, the bottom of the first riser 2 and the second riser 4 offers anti-type runner 6, and anti-type runner 6 is in circular arc,
And the center of circle of anti-type runner 6 is corresponding with the center of circle of two connection rings of mold bulk 1, gate valve body model casting teemer
Skill mixes the impurity on formwork surface in molten steel, casting flaw is easy to appear, if this part of molten steel stays in the shell of valve body
In, it necessarily will form casting flaw, influence product quality, by being provided with the first riser 2 and the second riser 4 and top riser 3, increase
Add the mode of riser, to accommodate this part of molten steel, to ensure that the castability of valve body, by anti-type runner 6, makes transition
It is rounder and more smooth, because cooling causes when can effectively increase molten steel in the intracorporal filling speed of shell, and optimize molten steel cooling
Casting deformation and crackle, the quality and precision of the casting of mold bulk 1 can be effectively improved, which pours
Casting process, by the horizontal casting of mold bulk 1, gate placement flange position in valve body, there is biggish contact surface in this position,
The molten steel come in from riser, rapidly can be transferred to enclosure interior, molten steel by the uniform middle flange for having wall thickness thicker simultaneously
It is the throat of flowing herein, we are appropriate to increase at this by flange flow path portion bit stream to flange after valve body
Wall thickness has adjusted transition arc, guarantees that molten steel can preferably fill type, solve at present with most fast speed by the region
Such part mainly uses the blank of casting and forming to be process, so the requirement to spray is very high, traditional founder
Skill yield rate is lower, is easy the casting flaws such as shrinkage porosite, stomata, cold shut occur in key position, seriously affects the qualification rate of product,
Also the problem of leaving very big security risk to client.
A kind of gate valve body model casting casting process, comprising the following steps:
1) it by mold bulk 1, places to shaping box, shaping box and mold bulk 1 is fixed by fixed equipment, Gu
After the completion of fixed, mold bulk 1 is sealed mold bulk 1 by sealing film, then toward fine sand is added inside shaping box, fills
Mold bulk 1 after the completion of filling, fine sand is slightly compacted until appropriate location, when filling fine sand, fine sand should with the first riser 2,
Second riser 4 and top riser 3 are at a distance of two to three centimetres；
2) output shaft of shaping box and vibration motor in step 1) is attached, the model XVM-A of vibration motor, is connected
After firm, starting shock motor is handled the fine sand inside shaping box, after running appropriate time as fine sand splashes to casting
The top of mould main body 1 is then rooted out fine sand appropriate, then is compacted, and the sealing film in step 1) is finally torn；
3) raw material are put into high temperature furnace, is melted, form molten steel after thawing, high-temperature molten steel is drained in constant temperature oven
Portion ensures the temperature of molten steel, then takes out molten steel appropriate, transport mold master into step 2 by corresponding storage device
1 top of body；
4) pouring step 3) in storage device, molten steel is filled by 7 average rate of gate pad into the inside of mold bulk 1, filling is extremely
After the appropriate degree of mold bulk 1, toward mold bulk 1 inside filling molten steel should be to ten to hundred 6 the percent of 1 volume of mold bulk
/ seven ten, storage device is resetted, vibration motor is restarted, and after running appropriate time, suspends vibration motor, then topple over storage
Device, the first riser 2, the second riser 4, top riser 3 and gate pad 7 toward mold bulk 1 process suitable molten steel respectively；
5) after the completion of filling in step 4) to mold bulk 1, at starting shock motor ten to 20 seconds, stop starting motor,
After static cooling appropriate time, normal-temperature water is added on the fine sand inside shaping box, accelerates the cooling of mold bulk 1, to mold
After main body 1 is cooled to room temperature, mold bulk 1 is taken out.
The beneficial effects of the present invention are: the gate valve body model casting casting process, the miscellaneous of formwork surface is mixed in molten steel
Matter is easy to appear casting flaw, if this part of molten steel stays in the shell of valve body, necessarily will form casting flaw, influences
Product quality increases the mode of riser, by being provided with the first riser 2 and the second riser 4 and top riser 3 to accommodate this portion
Steel splitting water by anti-type runner 6, keeps transition rounder and more smooth, can effectively increase molten steel to ensure that the castability of valve body
In the intracorporal filling speed of shell, and optimize when molten steel cools down because of casting deformation and crackle caused by cooling, it can be effective
Improve the quality and precision of the casting of mold bulk 1.
Also, the gate valve body model casting casting process, by the horizontal casting of mold bulk 1, gate placement is in valve body
There are biggish contact surface in middle flange position, this position, while the uniform middle flange for having wall thickness thicker, can rapidly from
The molten steel that riser is come in is transferred to enclosure interior, is stream herein by flange flow path portion bit stream to flange after molten steel passes through valve body
Dynamic throat, we are appropriate to increase wall thickness at this, has adjusted transition arc, guarantees that molten steel can be with most fast speed
By the region, type is preferably filled, such current part is solved and the blank of casting and forming is mainly used to be process, so right
The requirement of spray is very high, and traditional casting technique yield rate is lower, is easy shrinkage porosite, stomata, cold shut occur in key position
Etc. casting flaws, the problem of seriously affecting the qualification rate of product, also leave very big security risk to client.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of gate valve body model casting casting process, including mold bulk (1), it is characterised in that: the mold bulk (1)
Left side be fixedly installed with gate pad (7), the bottom of the gate pad (7) is fixedly installed with C corresponding with mold bulk (1)
The right side back side of type riser (5), the mold bulk (1) is fixedly installed with the first riser (2), the right side of the mold bulk (1)
Side is just being fixedly installed with the second riser (4), is fixedly installed with top riser (3) at the top of the mold bulk (1), and described first emits
The bottom of mouth (2) and the second riser (4) offers anti-type runner (6).
2. a kind of gate valve body model casting casting process according to claim 1, which is characterized in that the gate pad
(7) wedge shaped, and the left side of mold bulk (1) is flange face, the connection type of mold bulk (1) and gate pad (7) is welding.
3. a kind of gate valve body model casting casting process, which comprises the following steps:
1) it by mold bulk (1), places to shaping box, is consolidated shaping box and mold bulk (1) by fixed equipment
It is fixed, after the completion of fixed, mold bulk (1) is sealed mold bulk (1) by sealing film, then toward adding inside shaping box
After the completion of filling, fine sand is slightly compacted until appropriate location for fine sand, landfill mold bulk (1)；
2) output shaft of shaping box and vibration motor in step 1) is attached, after stable connection, starting shock motor, fortune
After row appropriate time, the fine sand inside shaping box is handled, if fine sand splashes to the top of mold bulk (1), is then rooted out
Fine sand appropriate, then be compacted, finally tear the sealing film in step 1)；
3) raw material are put into high temperature furnace, is melted, form molten steel after thawing, high-temperature molten steel is drained in constant temperature oven
Portion ensures the temperature of molten steel, then takes out molten steel appropriate, transport mold master into step 2 by corresponding storage device
At the top of body (1)；
4) pouring step 3) in storage device, molten steel is filled into the inside into mold bulk (1) by gate pad (7) average rate, is filled out
After being charged to the appropriate degree of mold bulk (1), storage device is resetted, vibration motor is restarted, and after running appropriate time, pause shake
Dynamic motor, then topple over storage device, toward the first riser (2), the second riser (4), top riser (3) and the cast gate of mold bulk (1)
Seat (7) processes suitable molten steel respectively；
5) after the completion of filling in step 4) to mold bulk (1), at starting shock motor ten to 20 seconds, stop starting electricity
Machine after static cooling appropriate time, adds normal-temperature water on the fine sand inside shaping box, accelerates the cooling of mold bulk (1), to
After mold bulk (1) is cooled to room temperature, take out mold bulk (1).
4. a kind of gate valve body model casting casting process according to claim 1, which is characterized in that the step 1)
In, when filling fine sand, fine sand should be with the first riser (2), the second riser (4) and top riser (3) at a distance of two to three centimetres.
5. a kind of gate valve body model casting casting process according to claim 1, which is characterized in that the step 4)
In, it should be to 70 60 the percent to percent of mold bulk (1) volume toward mold bulk (1) internal filling molten steel.
6. a kind of gate valve body model casting casting process according to claim 1, which is characterized in that the anti-type runner
It (6) is in circular arc, and the center of circle of anti-type runner (6) is corresponding with the center of circle of two connection rings of mold bulk (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910402583.3A CN110076290A (en) | 2019-05-15 | 2019-05-15 | A kind of gate valve body model casting casting process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910402583.3A CN110076290A (en) | 2019-05-15 | 2019-05-15 | A kind of gate valve body model casting casting process |
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| Publication Number | Publication Date |
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| CN110076290A true CN110076290A (en) | 2019-08-02 |
Family
ID=67420170
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| CN201910402583.3A Pending CN110076290A (en) | 2019-05-15 | 2019-05-15 | A kind of gate valve body model casting casting process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112296303A (en) * | 2020-10-20 | 2021-02-02 | 吴忠仪表有限责任公司 | Wax mould casting head and valve body casting method thereof |
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| CN108907095A (en) * | 2018-07-30 | 2018-11-30 | 河南圣得威机械科技有限公司 | Casting method based on 3D printing technique quick cast large-scale precision casting |
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| CN103537649A (en) * | 2012-10-29 | 2014-01-29 | 洛阳希诺能源科技有限公司 | Composite casting technology of excavator bucket teeth |
| CN103658534A (en) * | 2013-12-13 | 2014-03-26 | 浙江福瑞科流控机械有限公司 | Negative-pressure precision casting process of cold-mold protective shell |
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Application publication date: 20190802 |