CN205393465U - Foundry goods elongated hole shaping psammitolite structure - Google Patents
Foundry goods elongated hole shaping psammitolite structure Download PDFInfo
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- CN205393465U CN205393465U CN201620133899.9U CN201620133899U CN205393465U CN 205393465 U CN205393465 U CN 205393465U CN 201620133899 U CN201620133899 U CN 201620133899U CN 205393465 U CN205393465 U CN 205393465U
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Abstract
The utility model provides a foundry goods elongated hole shaping psammitolite structure, including the fire -resistant sleeve pipe of tip, fire -resistant sleeve pipe passes through, the technology steel pipe, sleeve pipe bonding resin layer, outer psammitolite layer, interior psammitolite layer and terminal surface seal the layer, pass through fire -resistant sleeve pipe setting between the fire -resistant sleeve pipe of tip, the three passes through sleeve pipe bonding resin layer and docks into hollow fire -resistant sleeve pipe, the coaxial technology steel pipe that sets up in fire -resistant sheathed tube hole, be equipped with the bleeder vent on the body of technology steel pipe, set up outer psammitolite layer between technology steel pipe and fire -resistant sheathed tube hole, psammitolite layer in being equipped with in the hole of technology steel pipe, it seals the layer to be equipped with the terminal surface at the both ends on outer psammitolite layer, including the center on psammitolite layer be equipped with air outlet channel. It is low that ordinary psammitolite surface refractoriness can not only be eliminated to the long and thin cast hole's of this kind of structure psammitolite, easily by high temperature molten iron scaling loss, burn, dash the defect of decreasing or breaking, can be convenient for moreover shake out and the recovery used repeatedly of technology steel pipe, few with the sand volume, cast with low costsly.
Description
Technical field:
This utility model relates to casting field, particularly relates to the molding sand core structure of a kind of elongated casting hole, with the core refractoriness of this molding structure height, rigidity and good permeability, can reduce the Foundry Production cost of foundry goods.
Background technology:
All having designed elongated straight pore structure in many foundry goods, and the material being used for manufacturing core in Foundry Production is generally resin core sand, waterglass core sand, clay core sand, wick sand etc., wherein resin core sand is most widely used.Owing to core major part in casting mold is surrounded by the molten metal of high temperature, the defects such as sepage, scab, pore, deformation it are easily generated in foundry goods hole, therefore core sand is except the performance should with general molding sand, also requires have higher refractoriness, intensity, rigidity and breathability, deformability, collapsibility.
In order to improve the refractoriness of core, intensity, rigidity and breathability, currently mainly take following two kinds of schemes:
The first, choose the seamless steel pipe that internal diameter is consistent with casting elongated hole diameter, seamless steel pipe outer surface carries out rust cleaning dry or coating process, then steel pipe is put into core box and produce core, and steel pipe fills up resin sand or other implant with proof strength, rear steel pipe to be cast will be embedded on foundry goods, thus obtaining required elongated hole.And use seamless steel pipe to be bumped into foundry goods when casting, would be likely to occur gap between steel pipe and foundry goods, be not suitable for the foundry goods that performance requirement is high, and require that steel pipe with the good welding of molten metal but is not melt and melts.But the elongated blowhole place of foundry goods often wall thickness is big, thermal center is big, and radiating condition is poor, particularly in the long liquid effect of high-temperature liquid metal, not only steel pipe is melted, and the core sand melt surface in pipe, cause sepage in blowhole skew, pipe, scab to clear up, cause foundry goods to scrap.Furthermore easily occurring gas hole defect when dealing with improperly due to steel tube surface or be contaminated, and steel pipe need to eliminate rust dry or coating and cannot reclaiming, cost is high.
Second, adopt resin core sand, in core box, put into inner wall belt passage steel pipe bone, roughing sand uses special sand such as chromite sand, the nice foundry sand etc. that refractoriness is higher, thus ensureing the refractoriness of core, intensity, rigidity and breathability, and extraordinary roughing sand is expensive, and casting cost is high.
Foundry goods Elongated hole sand core molding is disclosed at Chinese patent (CN203695877U), provide a kind of core degree of packing high, it includes core box and is coaxially plugged on the arbor in core box, described arbor is seamless steel pipe, being provided with annular gap between the outside wall surface and core box of arbor, be filled with resin sand in annular gap, the arbor surface corresponding with resin sand is provided with several passages, one end of passage turns in resin sand, and the other end turns on the centre bore in arbor.
Although it is inadequate that the program solves the core degree of packing existed in prior art, but cannot effectively aerofluxus, scab and pore very easily occur, foundry goods manufacturing cost is difficult to reduce.
Utility model content:
For the deficiency overcoming prior art to exist, this utility model provides a kind of foundry goods elongated hole molding sand core structure, the elongated hole molding core refractoriness of this structure is high, bending strength is high, anti-crushing performance is strong, good permeability, the dimensional accuracy of casting elongated hole obtained, form accuracy are high, and technique steel pipe is reusable, Foundry Production cost is low, can stably meet high-volume Foundry Production requirement.
The technical scheme that this utility model is taked is as follows:
A kind of foundry goods elongated hole molding sand core structure, it is characterized in that: include end refractory sleeve, transition refractory sleeve, technique steel pipe, sleeve pipe adhering resin layer, outer layer core layer, interior core layer and sealed port of butt end layer, transition refractory sleeve is arranged between the refractory sleeve of end, three is butted into the refractory sleeve of hollow by sleeve pipe adhering resin layer, the endoporus of refractory sleeve is coaxially disposed technique steel pipe, the body of technique steel pipe is provided with air-vent, outer layer core layer is set between technique steel pipe and the endoporus of refractory sleeve, the endoporus of technique steel pipe is provided with interior core layer, it is provided with sealed port of butt end layer at the two ends of outer layer core layer, it is provided with outlet passageway at the center of interior core layer.
Further, the body of technique steel pipe is evenly provided with air-vent.
Further, the diameter of described air-vent is 1～3 millimeter.
Further, the radial thickness of outer layer core layer is 5～10 millimeters.
Further, docked by stepped bore axle fit structure between end refractory sleeve with transition refractory sleeve.
nullOwing to this utility model adopts the brick matter refractory sleeve with excellent fire resistance and excellent air permeability as the core outer surface of elongated casting hole，Brick matter refractory sleeve is provided by specialized vendor，Precision is high，Length can arbitrarily determine，Docking mode is adopted to lengthen between brick matter refractory sleeve，To meet technological requirement，According to stepped bore axle docking structure，The automatic coaxial that can realize between end refractory sleeve with transition refractory sleeve docks，Outer layer core layer is set between technique steel pipe and refractory sleeve and can improve the core bending strength of elongated casting hole，The taking-up technique steel pipe that shakes out after being easy to cast form again，It is more conducive to follow-up refractory sleeve and smashes removing，Arrange on the body of technique steel pipe air-vent in order that aerofluxus during casting，Both ends of the surface at technique steel pipe and refractory sleeve are provided with sealed port of butt end layer，Its objective is envelope Du's outer layer core layer，The dry sand in outer layer core layer is prevented to run off.Arranging the purpose of interior core layer in the endoporus of technique steel pipe is improve the intensity of whole elongated casting hole core, rigidity further, interior core layer centrally disposed outlet passageway in order that when being easy to cast gas concentrate discharge.
It is low that the core adopting the elongated casting hole of this structure can not only eliminate normal sands wicking surface refractoriness, easily by high temperature liquid iron scaling loss, burn, the defect that punching is damaged or thrust, ensure the shape quality of elongated casting hole, improve the qualification rate of cast member, and the recovery with technique steel pipe of being easy to shake out is reused, compared with prior art, this utility model is adopted to carry out the casting of elongated casting hole, the elongated casting hole not only dimensional accuracy obtained, form accuracy and hole shape linearity are all higher than prior art, and technique steel pipe and dry sand are all reusable, sand using amount is few, casting cost is low.
Accompanying drawing illustrates:
Fig. 1 is a kind of structural representation of the present utility model；
Fig. 2 is another kind of structural representation of the present utility model；
In figure: the refractory sleeve of 1-end；2-transition refractory sleeve；3-technique steel pipe；4-sleeve pipe adhering resin layer；5-outer layer core layer；Core layer in 6-；7-sealed port of butt end layer；8-air-vent；9-outlet passageway.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described.
nullEmbodiment 1: a kind of foundry goods Elongated hole sand core molding structure，Including end refractory sleeve 1、Transition refractory sleeve 2、Technique steel pipe 3、Sleeve pipe adhering resin layer 4、Outer layer core layer 5、Interior core layer 6 and sealed port of butt end layer 7，Transition refractory sleeve 2 is arranged between end refractory sleeve 1，Three is butted into the refractory sleeve of hollow by sleeve pipe adhering resin layer 4，Technique steel pipe 3 is arranged in the endoporus of refractory sleeve，It is coaxially disposed between the two，The body of technique steel pipe 3 is evenly provided with air-vent 8，The diameter of described air-vent 8 is 1～5 millimeter，Outer layer core layer 5 is arranged between technique steel pipe 3 and the endoporus of refractory sleeve，The radial thickness of outer layer core layer 5 is 3～10 millimeters，The endoporus of technique steel pipe 3 is provided with interior core layer 6，Both ends of the surface at outer layer core layer 5 are provided with sealed port of butt end layer 7，It is provided with outlet passageway 9 at the center of interior core layer 6.
Embodiment 2: difference from Example 1 is in that the docking structure between end refractory sleeve 1 and transition refractory sleeve 2, the stepped bore axle fit structure that both pass through in this example realizes being coaxial docking.
Embodiment of the present utility model is much not limited to upper example, as long as adopting all technical schemes of technical thought of the present utility model all to belong to protection domain of the present utility model.
Claims (5)
- null1. a foundry goods elongated hole molding sand core structure，It is characterized in that: include end refractory sleeve (1)、Transition refractory sleeve (2)、Technique steel pipe (3)、Sleeve pipe adhering resin layer (4)、Outer layer core layer (5)、Interior core layer (6) and sealed port of butt end layer (7)，Transition refractory sleeve (2) is arranged between end refractory sleeve (1)，Three is butted into the refractory sleeve of hollow by sleeve pipe adhering resin layer (4)，The endoporus of refractory sleeve is coaxially disposed technique steel pipe (3)，The body of technique steel pipe (3) is provided with air-vent (8)，Outer layer core layer (5) it is provided with between technique steel pipe (3) and the endoporus of refractory sleeve，The endoporus of technique steel pipe (3) is provided with interior core layer (6)，It is provided with sealed port of butt end layer (7) at the two ends of outer layer core layer (5)，It is provided with outlet passageway (9) at the center of interior core layer (6).
- 2. foundry goods elongated hole molding sand core structure according to claim 1, is characterized in that: be evenly provided with air-vent (8) on the body of technique steel pipe (3).
- 3. foundry goods elongated hole molding sand core structure according to claim 1 or claim 2, is characterized in that: the diameter of described air-vent (8) is 1～3 millimeter.
- 4. foundry goods elongated hole molding sand core structure according to claim 1, is characterized in that: the radial thickness of outer layer core layer (5) is 5～10 millimeters.
- 5. foundry goods elongated hole molding sand core structure according to claim 1, be is characterized in that: docked by stepped bore axle fit structure between end refractory sleeve (1) with transition refractory sleeve (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620133899.9U CN205393465U (en) | 2016-02-23 | 2016-02-23 | Foundry goods elongated hole shaping psammitolite structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620133899.9U CN205393465U (en) | 2016-02-23 | 2016-02-23 | Foundry goods elongated hole shaping psammitolite structure |
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| CN205393465U true CN205393465U (en) | 2016-07-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694817A (en) * | 2017-03-28 | 2017-05-24 | 辽宁爱维尔铸业股份有限公司 | Double-disk flange and through-wall flange spheroidal graphite cast iron straight pipe integral casting technology |
| CN107282891A (en) * | 2017-06-29 | 2017-10-24 | 大连金河铸造有限公司 | The modified technique and sand core structure of casting through hole casting |
| CN109954838A (en) * | 2017-12-25 | 2019-07-02 | 科华控股股份有限公司 | A kind of elongated hole forming sand core structure of casting |
-
2016
- 2016-02-23 CN CN201620133899.9U patent/CN205393465U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694817A (en) * | 2017-03-28 | 2017-05-24 | 辽宁爱维尔铸业股份有限公司 | Double-disk flange and through-wall flange spheroidal graphite cast iron straight pipe integral casting technology |
| CN107282891A (en) * | 2017-06-29 | 2017-10-24 | 大连金河铸造有限公司 | The modified technique and sand core structure of casting through hole casting |
| CN107282891B (en) * | 2017-06-29 | 2024-02-02 | 大连金河铸造有限公司 | Improved casting process of casting through hole and sand core structure |
| CN109954838A (en) * | 2017-12-25 | 2019-07-02 | 科华控股股份有限公司 | A kind of elongated hole forming sand core structure of casting |
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