CN205200457U - Long and thin hole of sand mould ironcasting casting psammitolite structure - Google Patents
Long and thin hole of sand mould ironcasting casting psammitolite structure Download PDFInfo
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- CN205200457U CN205200457U CN201520303576.5U CN201520303576U CN205200457U CN 205200457 U CN205200457 U CN 205200457U CN 201520303576 U CN201520303576 U CN 201520303576U CN 205200457 U CN205200457 U CN 205200457U
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- glass fiber
- sand
- ironcasting
- sand mold
- glass fibre
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Abstract
The utility model relates to an as cast psammitolite structure of the long and thin hole of sand mould ironcasting, includes a fus, the core includes the sand mould of hollow tubulose the sand mould surface coating has two -layer casting coating, is provided with the glass fiber isolation layer between two -layer casting coating, the material of glass fiber isolation layer is alkali -free glass fiber or well alkali glass fiber or high -alkali glass fiber, the utility model discloses an isolation layer of one glass fiber material, tight barrier layer is set up behind the pouring molten iron to high temperature resistant, thermal -insulated effectual, the characteristics such as the prevention of fire is flame retardant, intensity is high, the outward appearance is smooth in make full use of glass fiber area between high temperature metal liquid and psammitolite, prevented production mechanical and chemical scab effectively. (B /)
Description
Technical field
The utility model relates to the sand core structure of a kind of sand mold ironcasting elongated bore casting, belongs to ironcasting sand casting field.
Background technology
The casting method of traditional sand mold ironcasting elongated bore is by with after the high temperature resistant cast paint of core brushing of arbor, is placed in sand mold when joining case, forms the shape of foundry goods endoporus after molten iron cast.
This kind of method because the aperture of casting is comparatively thin, length is longer, easily formed after casting pouring serious machinery or chemical scab defect cause residual sand not easy to clean or cleaning unclean.And these elongated bore are all often oil leab for machine or cooling water channel in foundry goods, do not fall once there is the cleaning of residual sand or foundry goods only will do not caused to scrap, causing serious loss to enterprise, even user.
Utility model content
The purpose of this utility model is exactly to propose a kind of structure improving sand mold ironcasting elongated bore core, prevents because elongated bore scab causes scrapping of foundry goods.
The utility model solves the technical scheme that its technical problem adopts:
A sand core structure for sand mold ironcasting elongated bore casting, comprise fuse, described fuse comprises the sand mold of hollow tubular, is coated with two-layer cast paint at described mould surface, is provided with glass fibre separation layer between two-layer cast paint; The material of described glass fibre separation layer is alkali-free glass fibre or medium-alkali glass fibre or high alkali glass fibre.
As further innovation of the present utility model, described glass fibre separation layer is entwined by glass fiber tape.
As further innovation of the present utility model, the canoe of described glass fiber tape is the spirality coaxial with sand mold.
As further innovation of the present utility model, the power of wrapping of described glass fibre separation layer is 500 ~ 600N.
As further innovation of the present utility model, the external diameter of described fuse is A, and the length of sand mold is that the ratio of B, A and B is between 1/40 to 1/5.
As further innovation of the present utility model, the coating layer thickness of institute's cast paint is between 20 ~ 30 μm.
The beneficial effects of the utility model are:
1, the utility model is by the separation layer of a glass fiber material, make full use of high temperature resistant, the feature such as good heat-insulation effect, fire protection flame retarding, intensity are high, smooth in appearance of glass fiber tape, between high temperature metal liquid and core, set up tight barrier layer after pouring molten iron, effectively prevent the generation of machinery and chemical scab.
2, power of wrapping is that 500 ~ 600N. can meet the degree of packing of fiber and can not destroy inner core.
The aperture ratio (diameter than hole length) in 1/40 ~ 1/5 scope of the arbor 13, used.If oversize, cannot precision be ensured, if too short, not adopt this kind of method to manufacture endoporus.
4, the combination of coating on refractory glass fibre is bonding, and coating layer thickness can meet the protection requirement to glass fibre in the coating of this thickness of 20 ~ 30um., and easily coating reaches time thickness.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is generalized section of the present utility model;
Figure comprises: 1, arbor; 2, resin layer of sand; 3, cast paint; 4, glass fiber tape.
Detailed description of the invention
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
embodiment 1
As shown in Figure 1, the utility model is a kind of sand mold ironcasting elongated bore casting sand core structure, comprise the arbor that high-strength metal material is made, the aperture ratio (diameter than hole length) in 1/40 ~ 1/5 scope of arbor 1, described arbor is densely covered with some passages, by above-mentioned passage at an arbor surface solidification resin layer of sand, when resin layer of sand is shaped, some volatilization gas produced and some expanding gas are discharged by passage, after shaping, arbor is taken out, obtain the sand mold of hollow tubular, cast paint is coated with on the surface of resin layer of sand, simultaneously before cast paint parches, attached glass fiber tape is twined on its surface, the material of glass fiber tape is alkali-free glass fibre (sodium oxide molybdena 0% ~ 2%, belong to aluminium borosilicate glass), the power of wrapping of glass fiber tape is 500 ~ 600N, one deck cast paint is applied again subsequently at glass fibre belt surface, coating drying to be cast just can be placed in sand mold afterwards when joining case, form the shape of foundry goods elongated bore after molten iron cast,
Certain flatness will be guaranteed in refractory glass fibre surface after winding, can enable the coating that coating is more smooth.Flatness requirement is identical with the flatness at other core positions, could meet the demand of producing.
Embodiment 2
As shown in Figure 1, the utility model is a kind of sand mold ironcasting elongated bore casting sand core structure, comprise the arbor that high-strength metal material is made, the aperture ratio (diameter than hole length) in 1/40 ~ 1/5 scope of arbor 1, described arbor is densely covered with some passages, core is made at an arbor surface solidification resin layer of sand by above-mentioned passage, cast paint is coated with on the surface of core, simultaneously before cast paint parches, attached glass fiber tape is twined on its surface, the material of glass fiber tape is medium-alkali glass fibre (sodium oxide molybdena 8% ~ 12%, the soda lime glass of genus boracic or not boracic), the power of wrapping of glass fiber tape is 500 ~ 600N, one deck cast paint is applied again subsequently at glass fibre belt surface, coating drying to be cast just can be placed in sand mold afterwards when joining case, form the shape of foundry goods elongated bore after molten iron cast.
Embodiment 3
As shown in Figure 1, the utility model is a kind of sand mold ironcasting elongated bore casting sand core structure, comprise the arbor that high-strength metal material is made, the aperture ratio (diameter than hole length) in 1/40 ~ 1/5 scope of arbor 1, described arbor is densely covered with some passages, core is made at an arbor surface solidification resin layer of sand by above-mentioned passage, cast paint is coated with on the surface of core, simultaneously before cast paint parches, attached glass fiber tape is twined on its surface, the material of glass fiber tape is alkali-free glass fibre (sodium oxide molybdena more than 13%, belong to soda lime glass), the power of wrapping of glass fiber tape is 500 ~ 600N, one deck cast paint is applied again subsequently at glass fibre belt surface, coating drying to be cast just can be placed in sand mold afterwards when joining case, form the shape of foundry goods elongated bore after molten iron cast.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on description, must determine its technical scope according to right.
Claims (6)
1. a sand core structure for sand mold ironcasting elongated bore casting, it is characterized in that: comprise fuse, described fuse comprises the sand mold of hollow tubular, is coated with two-layer cast paint at described mould surface, is provided with glass fibre separation layer between two-layer cast paint; The material of described glass fibre separation layer is alkali-free glass fibre or medium-alkali glass fibre or high alkali glass fibre.
2. the sand core structure of a kind of sand mold ironcasting elongated bore casting as claimed in claim 1, is characterized in that: described glass fibre separation layer is entwined by glass fiber tape.
3. the sand core structure of a kind of sand mold ironcasting elongated bore casting as claimed in claim 2, is characterized in that: the canoe of described glass fiber tape is the spirality coaxial with sand mold.
4. the sand core structure of a kind of sand mold ironcasting elongated bore casting as claimed in claim 1, is characterized in that: the power of wrapping of described glass fibre separation layer is 500 ~ 600N.
5. the sand core structure of a kind of sand mold ironcasting elongated bore casting as claimed in claim 1, it is characterized in that: the external diameter of described fuse is A, the length of sand mold is that the ratio of B, A and B is between 1/40 to 1/5.
6. the sand core structure of a kind of sand mold ironcasting elongated bore casting as claimed in claim 1, is characterized in that: the coating layer thickness of institute's cast paint is between 20 ~ 30 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520303576.5U CN205200457U (en) | 2015-05-13 | 2015-05-13 | Long and thin hole of sand mould ironcasting casting psammitolite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520303576.5U CN205200457U (en) | 2015-05-13 | 2015-05-13 | Long and thin hole of sand mould ironcasting casting psammitolite structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205200457U true CN205200457U (en) | 2016-05-04 |
Family
ID=55838198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520303576.5U Expired - Fee Related CN205200457U (en) | 2015-05-13 | 2015-05-13 | Long and thin hole of sand mould ironcasting casting psammitolite structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205200457U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112620583A (en) * | 2020-12-23 | 2021-04-09 | 重庆江增机械有限公司 | Manufacturing method of long and narrow hole groove on thin wall of ductile iron casting |
| CN112846143A (en) * | 2020-12-31 | 2021-05-28 | 厦门市佳嘉达机械有限公司 | High-strength and high-toughness die-casting sand core, preparation method thereof and forming process of die casting |
-
2015
- 2015-05-13 CN CN201520303576.5U patent/CN205200457U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112620583A (en) * | 2020-12-23 | 2021-04-09 | 重庆江增机械有限公司 | Manufacturing method of long and narrow hole groove on thin wall of ductile iron casting |
| CN112846143A (en) * | 2020-12-31 | 2021-05-28 | 厦门市佳嘉达机械有限公司 | High-strength and high-toughness die-casting sand core, preparation method thereof and forming process of die casting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20190513 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |