CN105436435A - Molding box structure for evaporative pattern casting process - Google Patents
Molding box structure for evaporative pattern casting process Download PDFInfo
- Publication number
- CN105436435A CN105436435A CN201511006785.4A CN201511006785A CN105436435A CN 105436435 A CN105436435 A CN 105436435A CN 201511006785 A CN201511006785 A CN 201511006785A CN 105436435 A CN105436435 A CN 105436435A
- Authority
- CN
- China
- Prior art keywords
- sandbox
- gauze
- sand
- line
- casting process
- 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
- B22C21/00—Flasks; Accessories therefor
- B22C21/12—Accessories
-
- 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
- B22C9/04—Use of lost patterns
- B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
Abstract
The invention discloses a molding box structure for an evaporative pattern casting process. Sand, a first gauze element, a second gauze element, a porous steel plate and an air suction chamber are sequentially arranged from top to bottom inside a molding box, wherein the sand is mixed sand of fine sand and medium sand; the fineness modulus of the fine sand is 2.0 to 1.8; the fineness modulus of the medium sand is 2.8 to 2.4.
Description
Technical field
The invention belongs to lost foam casting process technical field, be specifically related to a kind of lost foam casting process sandbox structure.
Background technology
New casting technique with fastest developing speed at present during lost foam casting, and coating technology is this technique successfully one of key, most lost foam casting manufacturer of current China adopts self-control coating to deal with production, and the cast(ing) surface obtained is coarse, even produce casting flaw.
Existing motor casing generally adopts sand casting, also needs to make fuse, complex process during moulding, wall thickness not easily ensures, percent defective is high, and production efficiency is low, also has at present and adopts lost foam process casting valve body, core need not be played, only need use foamed polystyrene bead, through foaming, make lost foam pattern, through combination bonding, surface brush fireproof coating, oven dry, bury case with dry sand, pours into a mould under negative pressure, evaporative pattern gasification disappears, form foundry goods, but white mould intensity is low, then through brushing, drying, bury the operations such as case, easily cause distortion, percent defective is high.
Summary of the invention
Goal of the invention: for the problem and shortage of above-mentioned prior art, the object of this invention is to provide a kind of lost foam casting process sandbox structure.
Technical scheme: the invention discloses a kind of lost foam casting process sandbox structure, sand, the first gauze, the second gauze, stephanoporate steel plate and pumping chamber is provided with from top to bottom successively in described sandbox, described sand is the mixed sand of fine sand and medium sand, described fine sand modulus of fineness is 2.0-1.8, and described medium sand modulus of fineness is 2.8-2.4.
As further optimization of the present invention, the first gauze hole of the present invention is greater than the second gauze.
As further optimization of the present invention, the first gauze of the present invention is aluminium alloy gauze, and described second gauze is glass fibre gauze.
As further optimization of the present invention, be provided with hollow pump-line in pairs in sandbox of the present invention, in the lower end of described hollow pump-line and pumping chamber, the upper end of this hollow pump-line is fixed in sandbox by fixed support.
As further optimization of the present invention, the height that the upper end of hollow pump-line of the present invention is positioned at sandbox is no more than 2/5 of sandbox height.
As further optimization of the present invention, hollow pump-line of the present invention is arranged in sandbox in a few font structure, and the upper end spacing of adjacent hollow pump-line is 1.3-1.5 times of this hollow pump-line lower end width.
Beneficial effect: the present invention compared with prior art, have the following advantages: adopt sandbox structure of the present invention, disappearance Bai Mo adds sand and buries in case operation, working effect is better, avoid the appearance of elephant skin phenomenon bottom large workpiece, the casting structure intensity of its casting is also higher, not yielding, yield rate is high, has good economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
1-sandbox body, 2--first gauze, 3--second gauze, 4--stephanoporate steel plate, 5--pumping chamber, 6--hollow pump-line.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail; but illustrate that protection scope of the present invention is not limited to the concrete scope of the present embodiment simultaneously; based on the embodiment in the present invention; those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
It should be noted that, in describing the invention, except as otherwise noted, the implication of " multiple " is two or more; Term " on ", D score, "left", "right", " interior ", " outward ", " front end ", " rear end ", " head ", the orientation of the instruction such as " afterbody " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.
As shown in Figure 1, a kind of lost foam casting process sandbox structure of the present embodiment, comprise sandbox body 1, sand, the first gauze 2, second gauze 3, stephanoporate steel plate 4 and pumping chamber 5 is provided with from top to bottom successively in this sandbox body 1, sand is the mixed sand of fine sand and medium sand, mixed volume is than best with 1:1 mixed effect, the present embodiment can adopt full fine sand to be filled in sandbox, also full medium sand can be adopted to be filled in sandbox, be not limited to adopt mixed sand, the fine sand modulus of fineness of the present embodiment is 2.0-1.8, and be preferably 2.0, medium sand modulus of fineness is 2.8-2.4.Be preferably 2.6.
Because the present embodiment adopts fine sand and medium sand mixing, and the first gauze 2 is positioned at above the second gauze 3, therefore the first gauze 2 hole that the present embodiment adopts is greater than the second gauze 3.Guarantee is bled effect, and first gauze 2 of the present embodiment adopts aluminium alloy gauze, and the second gauze 3 is glass fibre gauze.
Hollow pump-line 6 is provided with in pairs in the sandbox body 1 of the present embodiment, according to the size of sandbox body 1 reality, select the quantity of hollow pump-line 6, during to guarantee to bleed in sandbox body 1, sandbox internal gas pressure is even, in order to avoid cause workpiece damage, in the lower end of the hollow pump-line 6 of the present embodiment and pumping chamber 5, the upper end of this hollow pump-line 6 is fixed in sandbox body 1 by fixed support, and the height that the upper end of hollow pump-line 6 is positioned at sandbox body 1 is no more than 2/5 of sandbox body 1 height.
Hollow pump-line 6 concrete structure of the present embodiment is arranged in sandbox body 1 for a few font structure, the upper end spacing of adjacent hollow pump-line 6 be the 1.3-1.5 of this hollow pump-line 6 lower end width doubly, avoid adjacent hollow pump-line 6 to influence each other work.
Embodiments of the invention provide in order to example with for the purpose of describing, and are not exhaustively or limit the invention to disclosed form.Many modifications and variations are apparent for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (6)
1. a lost foam casting process sandbox structure, it is characterized in that: comprise sandbox body, sand, the first gauze, the second gauze, stephanoporate steel plate and pumping chamber is provided with from top to bottom successively in described sandbox body, described sand is the mixed sand of fine sand and medium sand, described fine sand modulus of fineness is 2.0-1.8, and described medium sand modulus of fineness is 2.8-2.4.
2. a kind of lost foam casting process sandbox structure according to claim 1, is characterized in that: the first gauze hole of telling is greater than the second gauze.
3. a kind of lost foam casting process sandbox structure according to claim 1 and 2, it is characterized in that: described first gauze is aluminium alloy gauze, described second gauze is glass fibre gauze.
4. a kind of lost foam casting process sandbox structure according to claim 1, it is characterized in that: in described sandbox body, be provided with hollow pump-line in pairs, in the lower end of described hollow pump-line and pumping chamber, the upper end of this hollow pump-line is fixed in sandbox body by fixed support.
5. a kind of lost foam casting process sandbox structure according to claim 4, is characterized in that: the upper end of described hollow pump-line is positioned at the intrinsic height of sandbox and is no more than 2/5 of sandbox body height.
6. a kind of lost foam casting process sandbox structure according to claim 4 or 5, it is characterized in that: described hollow pump-line is arranged in sandbox body in a few font structure, the upper end spacing of adjacent hollow pump-line is 1.3-1.5 times of this hollow pump-line lower end width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511006785.4A CN105436435A (en) | 2015-12-30 | 2015-12-30 | Molding box structure for evaporative pattern casting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511006785.4A CN105436435A (en) | 2015-12-30 | 2015-12-30 | Molding box structure for evaporative pattern casting process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105436435A true CN105436435A (en) | 2016-03-30 |
Family
ID=55547318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511006785.4A Pending CN105436435A (en) | 2015-12-30 | 2015-12-30 | Molding box structure for evaporative pattern casting process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105436435A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294256A (en) * | 2016-04-05 | 2017-10-24 | 福建聚能机械制造有限公司 | A kind of cast aluminium alloy gold motor casing of built-in stainless steel spiral coil water channel |
| CN110666105A (en) * | 2019-11-21 | 2020-01-10 | 安徽亚太锚链制造有限公司 | Anchor chain accessory and casting process of mooring chain accessory |
-
2015
- 2015-12-30 CN CN201511006785.4A patent/CN105436435A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294256A (en) * | 2016-04-05 | 2017-10-24 | 福建聚能机械制造有限公司 | A kind of cast aluminium alloy gold motor casing of built-in stainless steel spiral coil water channel |
| CN110666105A (en) * | 2019-11-21 | 2020-01-10 | 安徽亚太锚链制造有限公司 | Anchor chain accessory and casting process of mooring chain accessory |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160330 |
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| WD01 | Invention patent application deemed withdrawn after publication |