CN109290523A - A kind of processing method of small-bore high pound grade valve body integral sand core - Google Patents
A kind of processing method of small-bore high pound grade valve body integral sand core Download PDFInfo
- Publication number
- CN109290523A CN109290523A CN201811408129.0A CN201811408129A CN109290523A CN 109290523 A CN109290523 A CN 109290523A CN 201811408129 A CN201811408129 A CN 201811408129A CN 109290523 A CN109290523 A CN 109290523A
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- sand
- core
- frame
- height
- lump
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a kind of processing methods of small-bore high pound grade valve body integral sand core, and a sand lump I is first put in sand frame enclosing, to enclosing back-up sand in sand frame, sand-pack height is identical as sand frame height degree is enclosed, sand frame will be enclosed after waiting sand to harden to slough, and then sand lump I is processed, processes lower core box；Then plane set encloses sand frame on processed lower core box sand lump I, enclose the largest contours size that sand frame inside casing size is more than sand core, the height that sand frame height degree is more than sand core half is enclosed, to back-up sand in sand frame and lower core box is enclosed, sand-pack height is concordant with plane on sand frame is enclosed, after waiting sand hardening, wooden frame is sloughed, sand lump II is processed, processes the chamfered shape of sand core, entire sand core is taken out out of lower core box after process finishing, completes the production of integral sand core.The present invention guarantees that sand core is overall structure, and without gap, casting forming rear interior cavity size is accurate, does not criticize seam, reduces and repairs batch seam and polishing workload.
Description
Technical field
The present invention relates to resin sand casting fields, and in particular to a kind of processing system of small-bore high pound grade valve body integral sand core
Make method.
Background technique
The production method of traditional small-bore high pound grade valve body sand core, method one: opening core mould, generally Kazakhstan furan knot
Structure is divided into upper core box and lower core box two halves, back-up sand coremaking is distinguished in upper core box and lower core box, after waiting sand hardening, respectively
Then sand core and lower sand core in taking-up stick together upper sand core and lower sand core with dedicated viscous core rubber is cast.Method two: core is opened
Box mold, mold are to breathe out furan structure, i.e. core mould is made of two halves, and two halves core box is equipped with locking device, back-up sand coremaking
It is preceding first to lock two halves core mould, then the core print aperture position back-up sand from box core head, after waiting sand hardening, release two
The locking device of half core box takes out integral sand core, then locks two halves core mould again, wait the production of next group of sand core.
The shortcomings that existing one core-making method of method: sand core is divided into sand core and lower sand core two halves, and then two halves sand core is viscous
It being connected together, will lead to sand core and lower sand core after bonding divides core face to have the gap, and sand core is the inner-cavity structure to form casting, because
This casting forming rear interior cavity has fash, and because valve body bore is small, causes finishing polishing casting fin to be difficult to remove, both influenced
Casting quality and casting are beautiful, and increase polishing workload.
The shortcomings that two core-making method of existing method: core box is that two halves core box is combined with locking device, from core print
Aperture position back-up sand is not easy consolidation because back-up sand mouth is smaller after back-up sand.It is required according to casting technique, local location requirement in core box
When placing special sand, special sand can not be placed in specified position, ordinary resin sand coremaking can only be all replaced with special sand,
Because special sand is expensive, coremaking is at high cost.
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of small-bore high pound grade valve body integral sand cores
Processing method, guarantee sand core are overall structure, and without gap, casting forming rear interior cavity size is accurate, do not criticize seam, are reduced
Repair batch seam and polishing workload.
Summary of the invention
The technical problem to be solved by the present invention for the above-mentioned state of the art is to provide a kind of small-bore high pound grade valve bodies
The processing method of integral sand core.
The technical scheme of the invention to solve the technical problem is:
A kind of processing method of small-bore high pound grade valve body integral sand core, includes the following steps:
Step 1: first putting a sand lump I enclosing in sand frame, enclose the largest contours size that sand frame inside casing size is more than sand core, enclose
Sand frame height degree is more than the height of sand core half, and to back-up sand in sand frame is enclosed, sand-pack height is identical as sand frame height degree is enclosed, and waits sand hardening
After will enclose sand frame and slough, then sand lump I is processed, processes lower core box；
Step 2: plane set encloses sand frame on processed lower core box sand lump I, encloses sand frame inside casing size more than sand core
Largest contours size encloses the height that sand frame height degree is more than sand core half, to enclosing back-up sand in sand frame and lower core box, sand-pack height with enclose
Plane is concordant on sand frame, after waiting sand hardening, sloughs wooden frame, processes to sand lump II, process the chamfered shape of sand core,
Entire sand core is taken out out of lower core box after process finishing, completes the production of integral sand core.
Beneficial effects of the present invention: the present invention does not need out core mould, directly whole using three-dimensional figure and program processing
Sand core.If there is shape or technique are changed, directly modify three-dimensional figure and program file, compared to repair a die have it is more convenient.It compares
Gap is not present in the integral sand core of conventional method one, processing and fabricating, and sand core is complete.Spray forming rear interior cavity does not criticize seam,
Reconditioning fash is not needed, polishing workload is reduced；Compared to conventional method two, the sand core of processing and fabricating can be in the finger of technique requirement
Placement location special sand is positioned, and the integral sand core size of processing and fabricating is more acurrate.
Specific embodiment
Present invention is further described in detail With reference to embodiment.
A kind of processing method of small-bore high pound grade valve body integral sand core includes the following steps: step 1: first enclosing
A sand lump I is put in sand frame, encloses the largest contours size that sand frame inside casing size is more than sand core, encloses sand frame height degree more than sand core half
Highly, to back-up sand in sand frame is enclosed, sand-pack height is identical as sand frame height degree is enclosed, and will enclose sand frame after waiting sand to harden and slough, then right
Sand lump I is processed, and lower core box is processed；
Step 2: plane set encloses sand frame on processed lower core box sand lump I, encloses sand frame inside casing size more than sand core
Largest contours size encloses the height that sand frame height degree is more than sand core half, to enclosing back-up sand in sand frame and lower core box, sand-pack height with enclose
Plane is concordant on sand frame, after waiting sand hardening, sloughs wooden frame, processes to sand lump II, process the chamfered shape of sand core,
Entire sand core is taken out out of lower core box after process finishing, completes the production of integral sand core.
Above content is only citing made for the present invention and explanation, affiliated those skilled in the art are to being retouched
The specific embodiment stated does various modifications or additions or is substituted in a similar manner, as long as it does not deviate from the concept of invention
Or beyond the scope defined by this claim, it is within the scope of protection of the invention.
Claims (1)
1. a kind of processing method of small-bore high pound grade valve body integral sand core, which comprises the steps of:
Step 1: first putting a sand lump I enclosing in sand frame, enclose the largest contours size that sand frame inside casing size is more than sand core, enclose sand frame
Height is more than the height of sand core half, and to back-up sand in sand frame is enclosed, sand-pack height is identical as sand frame height degree is enclosed, will after waiting sand to harden
It encloses sand frame to slough, then sand lump I is processed, processes lower core box；
Step 2: plane set encloses sand frame on processed lower core box sand lump I, encloses the maximum that sand frame inside casing size is more than sand core
Overall size encloses the height that sand frame height degree is more than sand core half, to enclosing back-up sand in sand frame and lower core box, sand-pack height and encloses sand frame
Upper plane is concordant, after waiting sand hardening, sloughs wooden frame, processes to sand lump II, process the chamfered shape of sand core, processes
After entire sand core is taken out out of lower core box, complete the production of integral sand core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811408129.0A CN109290523B (en) | 2018-11-23 | 2018-11-23 | Method for processing and manufacturing small-caliber high-pound-grade valve body integral sand core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811408129.0A CN109290523B (en) | 2018-11-23 | 2018-11-23 | Method for processing and manufacturing small-caliber high-pound-grade valve body integral sand core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109290523A true CN109290523A (en) | 2019-02-01 |
| CN109290523B CN109290523B (en) | 2020-11-03 |
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ID=65144809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811408129.0A Active CN109290523B (en) | 2018-11-23 | 2018-11-23 | Method for processing and manufacturing small-caliber high-pound-grade valve body integral sand core |
Country Status (1)
| Country | Link |
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| CN (1) | CN109290523B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010040017A1 (en) * | 1999-07-28 | 2001-11-15 | Ronald Gustafson | Method for machining sand block into sand molding elements including sand molds and sand cores for metal casting foundry operations |
| CN102328020A (en) * | 2011-08-31 | 2012-01-25 | 刘天平 | Process method for rapidly developing cast product sample |
| CN103658544A (en) * | 2013-12-06 | 2014-03-26 | 哈尔滨东安发动机（集团）有限公司 | Designing and preparing method for conversion-free preliminary processing reference integral sand core |
| CN108160919A (en) * | 2017-12-05 | 2018-06-15 | 安徽应流集团霍山铸造有限公司 | A kind of digitlization is without molded core technique |
| CN108971437A (en) * | 2018-08-01 | 2018-12-11 | 广西玉柴机器股份有限公司 | The casting sand core production method of cylinder of diesel engine and cylinder head variant machine |
-
2018
- 2018-11-23 CN CN201811408129.0A patent/CN109290523B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010040017A1 (en) * | 1999-07-28 | 2001-11-15 | Ronald Gustafson | Method for machining sand block into sand molding elements including sand molds and sand cores for metal casting foundry operations |
| CN102328020A (en) * | 2011-08-31 | 2012-01-25 | 刘天平 | Process method for rapidly developing cast product sample |
| CN103658544A (en) * | 2013-12-06 | 2014-03-26 | 哈尔滨东安发动机（集团）有限公司 | Designing and preparing method for conversion-free preliminary processing reference integral sand core |
| CN108160919A (en) * | 2017-12-05 | 2018-06-15 | 安徽应流集团霍山铸造有限公司 | A kind of digitlization is without molded core technique |
| CN108971437A (en) * | 2018-08-01 | 2018-12-11 | 广西玉柴机器股份有限公司 | The casting sand core production method of cylinder of diesel engine and cylinder head variant machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109290523B (en) | 2020-11-03 |
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