CN104325089A - Preparation method of spiral hole in casting piece - Google Patents
Preparation method of spiral hole in casting piece Download PDFInfo
- Publication number
- CN104325089A CN104325089A CN201410595302.8A CN201410595302A CN104325089A CN 104325089 A CN104325089 A CN 104325089A CN 201410595302 A CN201410595302 A CN 201410595302A CN 104325089 A CN104325089 A CN 104325089A
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- CN
- China
- Prior art keywords
- threaded hole
- preparation
- foundry goods
- core
- casting
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- 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.)
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Classifications
-
- 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
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- 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 relates to the field of casting and particularly relates to a preparation method of a spiral hole in a casting piece. Figure 1 shows the schematic diagram of the spiral hole. The preparation method comprises the following steps: carrying out modeling according to the designed structure of the casting piece; manufacturing a spiral hole core by adopting high-temperature-resistant fiber and a metal skeleton. The size of the spiral hole core is the same as that of a formed hole, and the spiral hole core is placed in a mold during casting; after the casting piece is taken out, the spiral hole core is pulled out, and the spiral hole meeting the design requirements can be obtained. The preparation method has the advantage that the problem that the conventional casting method and machining method cannot prepare the spiral hole is solved.
Description
Technical field
The present invention relates to casting field, particularly the preparation method of threaded hole in a kind of foundry goods.
Background technology
The preparation of threaded hole is that common machining or traditional sand mould casting method are all difficult to realize, therefore, on current parts, the preparation of threaded hole adopts metal winding pipe (this metal winding pipe is identical with casting material) as threaded hole core more, again by casting threaded hole, but, this kind of method strictly must control casting of metals temperature, once the higher or misoperation of pouring temperature design, metal winding pipe may be fused, workpiece is caused to scrap, if pouring temperature design is too low, then may cause metal winding pipe and metallic matrix associativity bad, be unfavorable for workpiece quality equally.The present invention proposes to utilize high-temperature fibre as the surfacing of threaded hole core, and this threaded hole core, as the framework material of Kong Xin, is inserted preexisting hole position in type and fixes by the metal utilizing fusing point larger than metallic matrix in casting process; After taking out foundry goods, extracted out by this threaded hole core, can be met the threaded hole of designing requirement radius of curvature, superiority of the present invention is to solve the problem that routine casting method can not cast out threaded hole.
Summary of the invention
For above-mentioned technical problem, object of the present invention provides the preparation method of threaded hole in a kind of foundry goods, it adopts and metal wellability and all bad high-temperature fibre of the reactivity surfacing as threaded hole core, the higher metallic framework of intensity is as the framework material of threaded hole core, after not only can ensureing foundry goods cooling, threaded hole core can be extracted out smoothly, can also ensure that hole wall chemical composition does not change, the threaded hole of shaping better quality.
The object of the invention is to be achieved through the following technical solutions:
A. by high-temperature fibre uniform winding on spirality metal skeleton, namely obtain threaded hole core, the size of this threaded hole core and the measure-alike of institute's forming hole.Threaded hole core schematic cross-section 1:1 is hole wicking surface material, and 2 is hole core crab material;
B. threaded hole core inserted preexisting hole position in die cavity and fix;
C. the liquid metal that melting obtains is poured in casting mold, after cooled and solidified, obtain foundry goods;
D., after taking out foundry goods, threaded hole core is extracted out, can threaded hole be obtained.
According to such scheme, adopt high-temperature fibre as the surfacing of threaded hole core, the higher metallic framework of intensity is as the framework material of threaded hole core, hole wicking surface material and metal wellability and reactive bad, in casting process, do not react with metallic matrix, blowhole inwall chemical composition and matrix phase can be guaranteed together, obtain the foundry goods of comparatively high-quality; And metallic framework has some strength, can ensure that foundry goods cooling rear screw hole core is extracted out smoothly.
Accompanying drawing explanation
Fig. 1 is patent hole of the present invention core schematic cross-section.
Detailed description of the invention
The present embodiment is to cast diameter for 8mm, and length of run is 300mm, and the spiral nibs of internal diameter 30mm is that example is described.Moulding is carried out according to the casting structure of design; According to the shape of threaded hole, by carbon fiber uniform winding on spirality brandreth (for ensureing that threaded hole core can be extracted out smoothly from foundry goods, spirality brandreth can fracture from centre, spiral-shaped orifices core is extracted out from foundry goods both sides after foundry goods cooling), namely obtain threaded hole core, this threaded hole core is measure-alike with threaded hole that will be shaping, namely threaded hole core is diameter 8mm, length of run is 300mm, the threaded hole core of internal diameter 30mm, threaded hole core is inserted preexisting hole position in die cavity; Pour in casting mold by the metal aluminium liquid after melting, pouring temperature is 700 DEG C, after cooled and solidified, obtain foundry goods; After taking out foundry goods, threaded hole core is extracted out, obtain threaded hole.
Above-described embodiment is beneficial to explanation the present invention, instead of limitation of the present invention, and improvement of the present invention under the concept thereof of invention, all belongs to the scope of the claims in the present invention protection.
Claims (9)
1. the preparation method of threaded hole in foundry goods, comprises the steps:
Step a. utilizes high-temperature fibre and metallic framework to make and obtains threaded hole core, is located by the threaded hole core identical with hole dimension and is fixed in casting mold;
The molten metal that melting obtains by step b. pours in casting mold, prepares the foundry goods being with porose core after cooled and solidified;
After step c takes out foundry goods, hole core is extracted out, threaded hole can be prepared in foundry goods.
2. the preparation method of threaded hole in a kind of foundry goods according to claim 1, it is characterized in that: the preparation of this threaded hole core, that hole core crab material size is on demand bent into spirality, evenly, closely and do not reveal the resistant to elevated temperatures fibrous material of winding on metallic framework surface thereon, also again by hole chip bending after fibrous material evenly, closely and can not being revealed being wrapped on the core crab of hole of metallic framework surface, the surfacing of selected threaded hole core can be carbon fiber also can be other fibrous materials resistant to elevated temperatures.
3. the preparation method of threaded hole in a kind of foundry goods according to claim 1, is characterized in that: the framework material of selected threaded hole core can be Iron and Iron Alloy, can be also other metals, as long as meet its fusing point to be greater than metallic matrix fusing point.
4. the preparation method of threaded hole in a kind of foundry goods according to claim 1, is characterized in that: threaded hole bends the number of turns and do not limit, and can extract out smoothly as long as meet hole core after the casting.
5. the preparation method of threaded hole in a kind of foundry goods according to claim 1, it is characterized in that: the metal material of melting is not limit, metal matrix material comprises Al, Al alloy, Fe, Fe alloy, Cu, Cu alloy, Mg, Mg alloy, metal and the metal alloys such as Ag, Ag alloy.
6. the preparation method of threaded hole in a kind of foundry goods according to claim 1, is characterized in that: threaded hole spiral way is not limit, and can be left-hand screw also can be right-hand screw.
7. the preparation method of threaded hole in a kind of foundry goods according to claim 1, is characterized in that: threaded hole internal diameter, external diameter and curl up than etc. parameter do not limit, complete metapore core can extract out as long as meet casting.
8. the preparation method of threaded hole in a kind of foundry goods according to claim 1, is characterized in that: the method for employing can be the various casting methods such as gravitational casting, compression casting, low pressure casting, lost foam casting.
9. the preparation method of threaded hole in a kind of foundry goods according to claim 1, it is characterized in that: extract metallic matrix internal helicoid hole core out, can extract out after metallic matrix is cooled to room temperature, also just can solidify at metallic matrix and extract out to being cooled to any time between room temperature completely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410595302.8A CN104325089A (en) | 2014-10-30 | 2014-10-30 | Preparation method of spiral hole in casting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410595302.8A CN104325089A (en) | 2014-10-30 | 2014-10-30 | Preparation method of spiral hole in casting piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104325089A true CN104325089A (en) | 2015-02-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410595302.8A Pending CN104325089A (en) | 2014-10-30 | 2014-10-30 | Preparation method of spiral hole in casting piece |
Country Status (1)
| Country | Link |
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| CN (1) | CN104325089A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2897556A (en) * | 1957-09-04 | 1959-08-04 | Sperry Rand Corp | Method of coring holes in castings |
| US6374899B1 (en) * | 1999-11-04 | 2002-04-23 | Ykk Corporation | Method and apparatus for production of cast article having small hole |
| CN201519741U (en) * | 2009-10-29 | 2010-07-07 | 申明堂 | Metal mold casting device |
| CN103331434A (en) * | 2013-07-10 | 2013-10-02 | 沈阳工业大学 | Method for preparing long deep through hole with super-large length-diameter ratio in metal |
| CN103480801A (en) * | 2013-09-18 | 2014-01-01 | 沈阳工业大学 | Novel preparation method for casting crankshaft oil bore |
| CN103639366A (en) * | 2013-09-19 | 2014-03-19 | 沈阳工业大学 | Preparation method for U-shaped hole in casting |
-
2014
- 2014-10-30 CN CN201410595302.8A patent/CN104325089A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2897556A (en) * | 1957-09-04 | 1959-08-04 | Sperry Rand Corp | Method of coring holes in castings |
| US6374899B1 (en) * | 1999-11-04 | 2002-04-23 | Ykk Corporation | Method and apparatus for production of cast article having small hole |
| CN201519741U (en) * | 2009-10-29 | 2010-07-07 | 申明堂 | Metal mold casting device |
| CN103331434A (en) * | 2013-07-10 | 2013-10-02 | 沈阳工业大学 | Method for preparing long deep through hole with super-large length-diameter ratio in metal |
| CN103480801A (en) * | 2013-09-18 | 2014-01-01 | 沈阳工业大学 | Novel preparation method for casting crankshaft oil bore |
| CN103639366A (en) * | 2013-09-19 | 2014-03-19 | 沈阳工业大学 | Preparation method for U-shaped hole in casting |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150204 |