CN204700246U - A kind of sand core structure for bend pipe casting - Google Patents
A kind of sand core structure for bend pipe casting Download PDFInfo
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- CN204700246U CN204700246U CN201520255959.XU CN201520255959U CN204700246U CN 204700246 U CN204700246 U CN 204700246U CN 201520255959 U CN201520255959 U CN 201520255959U CN 204700246 U CN204700246 U CN 204700246U
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- bend pipe
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Abstract
The utility model relates to a kind of sand core structure for bend pipe casting, and the core print cross section at described core two ends is polygon, and wherein the core print of one end is provided with spacing sand block, and spacing sand block and core print are integral type structure.Described spacing sand block is arranged on bend pipe outside.Described core print cross section inscribed circle diameter is greater than bend pipe internal diameter.The utility model has the advantages that: the polygonized structure of sand core head makes the two ends of bend pipe fix, simultaneously, core print with spacing sand block supports the cylindrical core of whole bend pipe, in mould turnover and casting process, bend pipe core can not roll or topple over, can prevent bend pipe size from occurring deviation, ensure that wall thickness and the quality of bend pipe.
Description
Technical field
The utility model relates to thermal power generation overcritical bend pipe cast casting production field, particularly relates to a kind of sand core structure for bend pipe casting.
Background technology
Steam turbine is the important component part of thermal power plant air water system, and bend pipe will bear the load of various complexity and low, high cycle fatigue, high temperature, high pressure, high flow rate etc. test as a part for steam turbine in reheat vapor cycle process.Therefore, high to the material of bend pipe, casting technique and performance requirement.
Usually, the core of bend pipe is cylindrical whole core.Due to columniform feature, under bend pipe casting and molding in the past in core process, there is core left-right and front-back and topple over, roll, core print does not have the effect of fixed support core, after which results in bend pipe cast, occurs the phenomenon of dimension overproof.The quality of the bend pipe of impact.
Summary of the invention
For overcoming the deficiencies in the prior art, the purpose of this utility model is to provide a kind of sand core structure for bend pipe casting, avoids in casting process molten steel to lift to core the drift that case power causes core, avoids the generation that bend pipe size off-gage phenomenon occurs.
For achieving the above object, the utility model is achieved through the following technical solutions:
For a sand core structure for bend pipe casting, the core print cross section at described core two ends is polygon, and wherein the core print of one end is provided with spacing sand block, and spacing sand block and core print are integral type structure.
Described spacing sand block is arranged on bend pipe outside.
Described core print cross section inscribed circle diameter is greater than bend pipe internal diameter.
Described spacing sand block is arranged on the larger one end of the radian of bend pipe.
Compared with prior art, the beneficial effects of the utility model are:
The polygonized structure of sand core head makes the two ends of bend pipe fix, and meanwhile, the core print with spacing sand block supports the cylindrical core of whole bend pipe, in mould turnover and casting process, bend pipe core can not roll or topple over, and can prevent bend pipe size from occurring deviation, ensure that wall thickness and the quality of bend pipe.
Accompanying drawing explanation
Fig. 1 is the end view drawing of core print.
Fig. 2 is the end view drawing (being with spacing sand block) of core print.
Fig. 3 is bend pipe sand mould structure schematic diagram.
Fig. 4 is core schematic diagram under the moulding of bend pipe core.
In figure: 1-core print 2-spacing sand block 3-core 4-sandbox 5-bend pipe intermediate point.
Detailed description of the invention
Below in conjunction with Figure of description, the utility model is described in detail, but it should be noted that enforcement of the present utility model is not limited to following embodiment.
See Fig. 1-Fig. 4, a kind of core 3 structure for bend pipe casting, core print 1 cross section at described core 3 two ends is polygon, and wherein the core print 1 of one end is provided with spacing sand block 2, and spacing sand block 2 is integral type structure with core print 1.
Wherein, spacing sand block 2 is arranged on bend pipe outside.Core print 1 cross section inscribed circle diameter is greater than bend pipe internal diameter.One end that the radian that spacing sand block 2 is arranged on bend pipe is larger, i.e. the outer arc side of bend pipe.
Embodiment:
Bend pipe core 3 core print 1 adopts square, makes 2 square core prints 1 at bend pipe core 3 two end.Wherein side core print 1 directly forms spacing sand block 2 (its material is identical with core print 1), this core print 1 is made to be far longer than bend pipe core 3 size in width size, the whole core 3 that core print 1 with spacing sand block 2 has not only supported bend pipe makes the cylindrical whole core 3 of bend pipe roll and to topple over, and also ensure that the intensity of the whole core 3 of bend pipe.
The circle of spacing sand block 2 and bend pipe end face is tangent to be blocked, and has limited the movement of bend pipe sand mold, rotation.
Restriction due to core print 1 shape makes the size at bend pipe core 3 two ends and direction all be limited, if under the moulding of bend pipe core process ensure in the middle of certain any size, the size of whole bend pipe can be determined.
Special, the shape of bend pipe is that the transition of Multi-section eccentric circle forms, and the wall thickness of independent measurement every section bend pipe has certain difficulty, and the square core print 1 of bend pipe is correct and check that bend pipe core 3 times core sizes provide easy approach.
Square core print 1 devises larger wedge degree to facilitate lower core at die joint place, see Fig. 1, Fig. 2.
Bend pipe shape in this example is that one section of camber is comparatively large, and another section is straight section, selects the larger one end of radian to increase spacing sand block 2, even if this end core print 1 size is larger.Because the side that toppling direction many deflections camber of whole cylinder core 3 is large.
In Fig. 3, core print 1 size in left side much larger than right side, the cylindrical core 3 of the whole bend pipe that square core print 1 has supported.
Under bend pipe moulding in core process, square core print 1 is tangent with bend pipe profile sand mold, it is made to block fixing, square core print 1 makes the two ends of bend pipe fix, in mould turnover and casting process, bend pipe core 3 can not roll or topple over, as long as the bend pipe wall thickness measuring bend pipe intermediate point 5 place in measuring process just can determine the size of whole bend pipe.
The utility model has the advantage of: the core print 1 of core 3 adopts polygonized structure, the two ends of bend pipe are fixed, simultaneously, core print 1 with spacing sand block 2 supports the cylindrical core 3 of whole bend pipe, in mould turnover and casting process, bend pipe core 3 can not roll or topple over, and can prevent bend pipe size from occurring deviation, ensure that wall thickness and the quality of bend pipe.Both the check measurement having facilitated operation in production and bend pipe in turn ensure that size and the quality of bend pipe.
Claims (4)
1., for a sand core structure for bend pipe casting, it is characterized in that, the core print cross section at described core two ends is polygon, and wherein the core print of one end is provided with spacing sand block, and spacing sand block and core print are integral type structure.
2. a kind of sand core structure for bend pipe casting according to claim 1, it is characterized in that, described spacing sand block is arranged on bend pipe outside.
3. a kind of sand core structure for bend pipe casting according to claim 1, it is characterized in that, described core print cross section inscribed circle diameter is greater than bend pipe internal diameter.
4. a kind of sand core structure for bend pipe casting according to claim 1, is characterized in that, described spacing sand block is arranged on the larger one end of the radian of bend pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520255959.XU CN204700246U (en) | 2015-04-24 | 2015-04-24 | A kind of sand core structure for bend pipe casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520255959.XU CN204700246U (en) | 2015-04-24 | 2015-04-24 | A kind of sand core structure for bend pipe casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204700246U true CN204700246U (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520255959.XU Active CN204700246U (en) | 2015-04-24 | 2015-04-24 | A kind of sand core structure for bend pipe casting |
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| Country | Link |
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| CN (1) | CN204700246U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107598099A (en) * | 2017-09-21 | 2018-01-19 | 宁波市平熔金属制品有限公司 | A kind of core rod of the flanged hollow cast steel thin-winding pipe casting mould in both ends |
| CN108620540A (en) * | 2018-05-29 | 2018-10-09 | 泉州联创厨卫有限公司 | A kind of gravity casting apparatus of kirsite tap |
| CN109175272A (en) * | 2018-11-14 | 2019-01-11 | 安徽应流集团霍山铸造有限公司 | A kind of bend pipe class sand casting sandbox and its sand core |
-
2015
- 2015-04-24 CN CN201520255959.XU patent/CN204700246U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107598099A (en) * | 2017-09-21 | 2018-01-19 | 宁波市平熔金属制品有限公司 | A kind of core rod of the flanged hollow cast steel thin-winding pipe casting mould in both ends |
| CN107598099B (en) * | 2017-09-21 | 2024-04-12 | 宁波市平熔金属制品有限公司 | Mold core of casting mold for hollow cast steel thin-wall bent pipe with flanges at two ends |
| CN108620540A (en) * | 2018-05-29 | 2018-10-09 | 泉州联创厨卫有限公司 | A kind of gravity casting apparatus of kirsite tap |
| CN109175272A (en) * | 2018-11-14 | 2019-01-11 | 安徽应流集团霍山铸造有限公司 | A kind of bend pipe class sand casting sandbox and its sand core |
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