CN204603220U - Combined type ventilation shell core - Google Patents
Combined type ventilation shell core Download PDFInfo
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- CN204603220U CN204603220U CN201520319825.XU CN201520319825U CN204603220U CN 204603220 U CN204603220 U CN 204603220U CN 201520319825 U CN201520319825 U CN 201520319825U CN 204603220 U CN204603220 U CN 204603220U
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- shell core
- steel pipe
- exhaust
- ventilation
- combined type
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Abstract
The utility model discloses combined type ventilation shell core, comprise the shell core made according to casting dimension, it also comprises with the ventilation steel pipe of shell core inner space and fills in the rod iron plug of ventilating in steel pipe, ventilation steel pipe is divided into ventilating part and exhaust portion, exhaust portion is positioned at outside shell core, exhaust portion is provided with an exhaust hole, the inner chamber of shell core, ventilate steel pipe and an exhaust composition exhaust passage, hole.The beneficial effects of the utility model are: adopt combined type ventilation shell core can play the effect of smooth gas discharge when pouring into a mould, effectively prevent gas and enter foundry goods formation pore, ensure that shell core intensity, and shell core consistency of thickness can be ensured, do not cause peritonaeum sand to waste, and there is structure feature simple, easy to use.
Description
Technical field
The utility model relates to combined type ventilation shell core, belongs to die casting technical field.
Background technology
Metal type and sand casting, when casting has the foundry goods of comparatively enclosed cavity, often adopt peritonaeum resin sand blowing shell core.Wherein, sand casting often adopts the manual oil core making consolidation.During blowing shell core, be comparatively difficult to ensure card blowout hollow shell core, be particularly more difficult to ensure card hollow at the less shell core of size, and can not ensure shell core consistency of thickness when blowing shell core, blowing the thick peritonaeum sand that causes wastes, and blows thin shell core insufficient strength, easily damages.When therefore blowing shell core, shell core blows more abundant, is comparatively difficult to ensure the shell core of the unified shell core thickness of card blowout, is particularly more difficult to ensure card at the less shell core of size.When casting, the peritonaeum resin sand making shell core is subject to the heat effect of high temperature alloy liquid, resin and sand will produce a large amount of gas, the foundry goods that casting has comparatively enclosed cavity is difficult to Exhaust Gas, gas will enter into aluminium alloy, shell core blows to obtain the more abundant factor more exacerbating gas and produce, and along with cooled and solidified forms pore in foundry goods, causes more castability defect.
Summary of the invention
The purpose of this utility model is to provide a kind of combined type ventilation shell core, can overcome the deficiencies in the prior art, prevents gas from entering foundry goods and forms pore.
The purpose of this utility model is achieved through the following technical solutions: combined type ventilation shell core, comprise the shell core made according to casting dimension, it also comprises with the ventilation steel pipe of shell core inner space and fills in the rod iron plug of ventilating in steel pipe, ventilation steel pipe is divided into ventilating part and exhaust portion, exhaust portion is positioned at outside shell core, exhaust portion is provided with an exhaust hole, the inner chamber of shell core, ventilate steel pipe and an exhaust composition exhaust passage, hole.
The diameter 1-2mm less of the external diameter of ventilation steel pipe of described rod iron plug.
The length of described ventilation steel pipe is not less than 5-10mm, and the length of exhaust portion 22 is 5-10mm.
Described exhaust is propped up hole and is evenly distributed on the outer wall of ventilation steel pipe.
The beneficial effects of the utility model are: adopt combined type ventilation shell core can play the effect of smooth gas discharge when pouring into a mould, effectively prevent gas and enter foundry goods formation pore, ensure that shell core intensity, and shell core consistency of thickness can be ensured, do not cause peritonaeum sand to waste, and there is structure feature simple, easy to use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is sectional view of the present utility model.
Wherein, 1-shell core, 2-ventilates steel pipe, 3-rod iron plug, a 4-exhaust hole, 5-exhaust passage, 21-ventilating part, 22-exhaust portion.
Detailed description of the invention
The technical solution of the utility model is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As shown in Figure 1, Figure 2, combined type ventilation shell core, comprise the shell core 1 made according to casting dimension, it also comprises with the ventilation steel pipe 2 of shell core 1 inner space and fills in the rod iron plug 3 of ventilating in steel pipe 2, the quantity of ventilation steel pipe 2 is determined according to the cavity structure of shell core 1, and ventilation steel pipe 2 is divided into ventilating part 21 and exhaust portion 22, and exhaust portion 22 is positioned at outside shell core 1, exhaust portion 22 is provided with an exhaust hole 4, the inner chamber of shell core 1, ventilation steel pipe 2 and an exhaust hole 4 form exhaust passage 5.
The diameter 1-2mm less of the external diameter of ventilation steel pipe 2 of described rod iron plug 3.
The length of described ventilation steel pipe 2 is not less than 5-10mm, and the length of exhaust portion 22 is 5-10mm.
Described exhaust is propped up hole 4 and is evenly distributed on the outer wall of ventilation steel pipe 2.
First, be vented according to large little makings tube wall band of casting cavity and shell core 1 size the ventilation steel pipe 2 propping up hole 4.When blowing shell core, this ventilation steel pipe 2 being inserted location in core box and places, be placed with the rod iron plug 3 that diameter is less than exhaust steel pipe 2 internal diameter 1-2mm in exhaust steel pipe 2, set solid gas steel pipe 2 inner space filled by rod iron plug 3, and sand can be prevented to be blown into.Pre-hot box blows shell core to 260-300 degree (reference temperature), and the core box after peritonaeum resin sand is blown into heating is heated, and resin sand sintering forms combined type with ventilation steel pipe 2 and to ventilate shell core.After having blown shell core, take out rod iron 4.During casting, the inner chamber of combined type ventilation shell core, exhaust hole 4 form exhaust passage 5 with ventilation steel pipe 2, and the gas that shell core during casting produces by the heat effect of high-temperature liquid metal is propped up hole 4 ejectment to outside casting mold by being vented, and the gas prevented enters foundry goods.
Specific embodiment described herein is only sit the utility model to illustrate.The utility model person of ordinary skill in the field can make amendment miscellaneous or supplements or adopt similar mode to substitute to described specific embodiment, but can not depart from spirit of the present utility model or surmount the scope that appended claims defines.All employings are equal to the technical scheme of replacement or equivalent deformation formation, all drop on the protection domain of the utility model claim.
Claims (4)
1. combined type ventilation shell core, comprise the shell core (1) made according to casting dimension, it is characterized in that: it also comprises with the ventilation steel pipe (2) of shell core (1) inner space and fills in the rod iron plug (3) of ventilating in steel pipe (2), ventilation steel pipe (2) is divided into ventilating part (21) and exhaust portion (22), (22 are positioned at shell core (1) outward to exhaust portion, exhaust portion (22) is provided with an exhaust hole (4), the inner chamber of shell core (1), ventilate steel pipe (2) and an exhaust hole (4) composition exhaust passage (5).
2. combined type ventilation shell core according to claim 1, is characterized in that: the diameter 1-2mm less of the external diameter of ventilation steel pipe (2) of described rod iron plug (3).
3. combined type ventilation shell core according to claim 1, it is characterized in that: the length of described ventilation steel pipe (2) is not less than 5-10mm, the length of exhaust portion (22) is 5-10mm.
4. combined type ventilation shell core according to claim 1, is characterized in that: described exhaust is propped up hole (4) and is evenly distributed on the outer wall of ventilation steel pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520319825.XU CN204603220U (en) | 2015-05-18 | 2015-05-18 | Combined type ventilation shell core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520319825.XU CN204603220U (en) | 2015-05-18 | 2015-05-18 | Combined type ventilation shell core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204603220U true CN204603220U (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520319825.XU Active CN204603220U (en) | 2015-05-18 | 2015-05-18 | Combined type ventilation shell core |
Country Status (1)
| Country | Link |
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| CN (1) | CN204603220U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106903265A (en) * | 2017-02-16 | 2017-06-30 | 共享装备股份有限公司 | Accelerate the mould of molding resin sand air-set |
| CN110976781A (en) * | 2020-01-08 | 2020-04-10 | 西华大学 | Sand casting core making process adopting rotary type telescopic core rod |
-
2015
- 2015-05-18 CN CN201520319825.XU patent/CN204603220U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106903265A (en) * | 2017-02-16 | 2017-06-30 | 共享装备股份有限公司 | Accelerate the mould of molding resin sand air-set |
| CN110976781A (en) * | 2020-01-08 | 2020-04-10 | 西华大学 | Sand casting core making process adopting rotary type telescopic core rod |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |