CN104399892B - A kind of Novel twisted slice tube fusible pattern - Google Patents
A kind of Novel twisted slice tube fusible pattern Download PDFInfo
- Publication number
- CN104399892B CN104399892B CN201410730738.3A CN201410730738A CN104399892B CN 104399892 B CN104399892 B CN 104399892B CN 201410730738 A CN201410730738 A CN 201410730738A CN 104399892 B CN104399892 B CN 104399892B
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- CN
- China
- Prior art keywords
- twisted
- slice tube
- twisted slice
- tube
- running channel
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
Abstract
A kind of Novel twisted slice tube fusible pattern, including cup, twisted slice tube, described cup is provided below cross gate, and below cross gate, both sides are provided with rotary running channel, and described rotary running channel enters cast gate by several and connects twisted slice tube；Described enters cast gate horizontal symmetry.Present configuration is reasonable, reduce the probability that molten steel inclusion occurs, and the direction of rotation of rotary running channel is consistent with the direction of rotation of twisted blade in twisted slice tube, avoid twisted slice tube product that twisted blade local shrinkage porosite occurs, extend the service life of twisted slice tube, the RT inspection qualification rate of twisted slice tube product brings up to 98% from original 20% simultaneously, it is to avoid artificial waste, has saved production cost.
Description
Technical field
The present invention relates to the application in pyrolysis furnace, refer more particularly to a kind of Novel twisted slice tube fusible pattern.
Background technology
Twisted slice tube application in pyrolysis furnace is a major technological breakthrough of ethylene industry development.Twisted slice tube is the core of pyrolysis furnace heat transfer enhancement technology.After pyrolysis furnace installs twisted slice tube additional, when fluid is by wide with boiler tube twisted slice tube, rotating flow is become from original piston flow, increase considerably the tangential flow velocity of fluid, tube wall is formed strong souring, is significantly thinned the boundary layer thickness that thermal resistance is big, increase the overall heat-transfer coefficient of boiler tube, thus reduce the temperature of boiler tube tube wall, reach augmentation of heat transfer, extend pyrolysis furnace service cycle.The twisted slice tube first-time qualification rate that traditional full form casting process produces is relatively low, and service life is shorter, thus shortens the service cycle of pyrolysis furnace.
Twisted slice tube structure is complicated at present, it is difficult to centrifugal casting, model casting can only be used to shape, owing to boiler tube each position setting time is different, if the position feeding of final set is not enough, it is easy for forming shrinkage cavity or loose, and twisted sheet is big due to thermal capacity with the joint of tube wall, easily become the position of final set, if can not feeding, it is easy to produce casting flaw.
Summary of the invention
It is an object of the invention to provide a kind of Novel twisted slice tube fusible pattern, this invention reduces the probability that molten steel inclusion occurs, and the direction of rotation of rotary running channel is consistent with the direction of rotation of twisted blade in twisted slice tube, avoid twisted slice tube product that twisted blade local shrinkage porosite occurs, extend the service life of twisted slice tube, improve the first-time qualification rate of twisted slice tube product, it is to avoid artificial waste, save production cost.
The present invention is achieved in that a kind of Novel twisted slice tube fusible pattern, including cup, twisted slice tube, it is characterized in that: described cup is provided below cross gate, cross gate lower end lateral symmetry is provided with rotary running channel, and described rotary running channel enters cast gate by several and connects twisted slice tube.
The direction of rotation of rotary running channel of the present invention is consistent with twisted blade direction of rotation in twisted slice tube.
Of the present invention enter cast gate be symmetrical arranged.
Present configuration is reasonable, reduce the probability that molten steel inclusion occurs, and the direction of rotation of rotary running channel is consistent with the direction of rotation of twisted blade in twisted slice tube, avoid twisted slice tube product that twisted blade local shrinkage porosite occurs, extend the service life of twisted slice tube, the RT inspection qualification rate of twisted slice tube product brings up to 98% from original 20% simultaneously, it is to avoid artificial waste, has saved production cost.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of the present invention；
In figure: 1, cup, 2, cross gate, 3, rotary running channel, 4, enter cast gate, 5, twisted slice tube.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
Referring to the drawings, a kind of Novel twisted slice tube fusible pattern, including cup 1, twisted slice tube 5, it is characterized in that: described cup 1 is provided below cross gate 2, cross gate 2 lower end lateral symmetry is provided with rotary running channel 3, and described rotary running channel 3 enters cast gate 4 by several and connects twisted slice tube 5；The direction of rotation of described rotary running channel 3 is consistent with twisted blade direction of rotation in twisted slice tube 5；The described cast gate 4 that enters is symmetrical arranged.
When being embodied as, during cast, molten steel is injected cross gate by top cup 1, enters rotary running channel 3 from cross gate 2, several enter cast gate 4 and be injected separately into twisted slice tube 5 die cavity.The present invention has the advantage that 1 compared with tradition one Novel twisted slice tube fusible pattern, molten steel flow mode avoids molten steel and directly entered twisted slice tube die cavity by cup and produce frontal impact and produce eddy current, greatly reduces the probability that molten steel inclusion occurs.2, molten steel is entered rotary running channel by cross gate and is equivalent to a buffering course, this process reduces the generation amount of gas in molten steel casting process, it is ensured that molten steel smooth sequential ground injects twisted slice tube die cavity.3, the molten steel storage capacity of rotary running channel is more than the molten steel storage capacity of general type running channel, its molten steel storage capacity and setting time are only second to rising head, be conducive to solidification and the feeding of twisted slice tube foundry goods, the direction of rotation of rotary running channel is consistent with the direction of rotation of twisted blade in twisted slice tube, be conducive to the molten steel feeding to twisted slice tube blade, it is to avoid twisted slice tube product occurs that twisted blade local shrinkage porosite phenomenon produces.
Claims (1)
1. a Novel twisted slice tube fusible pattern, including cup (1), twisted slice tube (5), it is characterized in that: described cup (1) is provided below U-shaped cross gate (2), cross gate (2) lower end lateral symmetry is provided with rotary running channel (3), and described rotary running channel (3) enters cast gate (4) by several and connects twisted slice tube (5)；The direction of rotation of described rotary running channel (3) is consistent with twisted slice tube (5) interior twisted blade direction of rotation；The described cast gate (4) that enters is symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410730738.3A CN104399892B (en) | 2014-12-05 | 2014-12-05 | A kind of Novel twisted slice tube fusible pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410730738.3A CN104399892B (en) | 2014-12-05 | 2014-12-05 | A kind of Novel twisted slice tube fusible pattern |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104399892A CN104399892A (en) | 2015-03-11 |
| CN104399892B true CN104399892B (en) | 2016-08-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410730738.3A Active CN104399892B (en) | 2014-12-05 | 2014-12-05 | A kind of Novel twisted slice tube fusible pattern |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104399892B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732638A (en) * | 2019-10-22 | 2020-01-31 | 东风精密铸造安徽有限公司 | falling casting head for investment casting |
| CN113084115B (en) * | 2021-04-07 | 2022-03-01 | 江苏双勤新能源科技有限公司 | Vertical centrifugal casting equipment for manufacturing twisted sheet tube |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3312867A1 (en) * | 1982-04-12 | 1983-11-17 | Howmet Turbine Components Corp., 06830 Greenwich, Conn. | METHOD AND DEVICE FOR PRODUCING A MOLDED METAL OBJECT |
| EP0099687A1 (en) * | 1982-07-03 | 1984-02-01 | ROLLS-ROYCE plc | A mould assembly for casting metal articles and a method of manufacture thereof |
| CN1211481A (en) * | 1998-08-12 | 1999-03-24 | 傅明康 | Casting method for diesel engine cylinder cowl and its special barrel body |
| CN101618425A (en) * | 2009-07-25 | 2010-01-06 | 日月重工股份有限公司 | Method for casting rotary axis casts of aerogenerators |
| CN201744615U (en) * | 2010-08-13 | 2011-02-16 | 浙江杭机铸造有限公司 | Casting system for stepped casts |
| CN102658355A (en) * | 2012-05-06 | 2012-09-12 | 苏氏工业科学技术（北京）有限公司 | Squirrel-cage shell load bearing structure integrated with runner film tire |
| CN204294875U (en) * | 2014-12-05 | 2015-04-29 | 江苏标新久保田工业有限公司 | Novel twisted slice tube fusible pattern |
-
2014
- 2014-12-05 CN CN201410730738.3A patent/CN104399892B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3312867A1 (en) * | 1982-04-12 | 1983-11-17 | Howmet Turbine Components Corp., 06830 Greenwich, Conn. | METHOD AND DEVICE FOR PRODUCING A MOLDED METAL OBJECT |
| EP0099687A1 (en) * | 1982-07-03 | 1984-02-01 | ROLLS-ROYCE plc | A mould assembly for casting metal articles and a method of manufacture thereof |
| CN1211481A (en) * | 1998-08-12 | 1999-03-24 | 傅明康 | Casting method for diesel engine cylinder cowl and its special barrel body |
| CN101618425A (en) * | 2009-07-25 | 2010-01-06 | 日月重工股份有限公司 | Method for casting rotary axis casts of aerogenerators |
| CN201744615U (en) * | 2010-08-13 | 2011-02-16 | 浙江杭机铸造有限公司 | Casting system for stepped casts |
| CN102658355A (en) * | 2012-05-06 | 2012-09-12 | 苏氏工业科学技术（北京）有限公司 | Squirrel-cage shell load bearing structure integrated with runner film tire |
| CN204294875U (en) * | 2014-12-05 | 2015-04-29 | 江苏标新久保田工业有限公司 | Novel twisted slice tube fusible pattern |
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| Publication number | Publication date |
|---|---|
| CN104399892A (en) | 2015-03-11 |
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Address after: 214500 Jiangsu city of Taizhou province Jingjiang city new town Lishi No. 186 South Street Applicant after: JIANGSU BIAOXIN INDUSTRY CO., LTD. Address before: 214500 Jiangsu city of Taizhou province Jingjiang city new town Lishi No. 186 South Street Applicant before: Jiangsu Biaoxin Kubota Industrial Co., Ltd. |
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