CN105964923A - Bending-free uniform-section flat internal sprue ceramic pipe connected between internal pouring gate and cavity - Google Patents
Bending-free uniform-section flat internal sprue ceramic pipe connected between internal pouring gate and cavity Download PDFInfo
- Publication number
- CN105964923A CN105964923A CN201610357905.3A CN201610357905A CN105964923A CN 105964923 A CN105964923 A CN 105964923A CN 201610357905 A CN201610357905 A CN 201610357905A CN 105964923 A CN105964923 A CN 105964923A
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- China
- Prior art keywords
- flat
- section
- opening part
- ceramic pipe
- internal
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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
Abstract
The invention provides a bending-free uniform-section flat internal spure ceramic pipe connected between an internal pouring gate and a cavity. The bending-free uniform-section flat internal spure ceramic pipe connected between the internal pouring gate and the cavity comprises a ceramic pipe body, a round opening part and a flat opening part. The ceramic pipe body is a smooth curved surface connected between the round opening part and the flat opening part in a transition mode. The section of the round opening part is round, and the section of the flat opening part is rectangular. The sectional area of the round opening part is the same as that of the flat opening part. The sectional areas of different positions on the smooth curved surface of the ceramic pipe body are also the same. The sectional area of the ceramic pipe body is the same as the sectional area of the round opening part and the sectional area of the flat opening part. The round opening part is used for being in lap joint with the tail end of the internal pouring gate. The flat opening part is used for being connected with the casting cavity. According to the bending-free uniform-section flat internal spure ceramic pipe connected between the internal pouring gate and the cavity, the sectional area of the round opening part, the sectional area of the flat opening part and the sectional area of the ceramic pipe body are the same, so that original cylindrical uniform-diameter and bent uniform-section L-shaped pipes are replaced by the bending-free uniform-section gradually-changing ceramic pipe, and the purposes of reducing the number of hot joints in the contact portion of the internal pouring gate and a casting and reducing shrinkage defects nearby are achieved.
Description
Technical field
The present invention relates to machine casting technical field, particularly relate to a kind of uiform section without bending being connected between ingate and die cavity flat ingate earthenware.
Background technology
The most most important ring of foundry goods is casting process, especially nodular iron casting, and for avoiding producing turbulent flow, volume conductance cause generation oxidizing slag in casting process, in current industry, commonly used low temperature waters the pouring technology that bottom is injected soon.It is high that China Machine Press in 2003 publishes foundry goods temperature of lower in pointing out this technique casting mold in " casting handbook-casting technique volume second edition " chapter 3 " casting Technology Design ", it is unfavorable for feeding, easily produce shrinkage defect, especially be connected T-shaped with foundry goods of running channel is easier to form thermal center, therefore it is required that the longitudinal section of running channel from seam in " close to remote thickness thin ".
Additionally need because of technological design, the cast gate that circular cross section diameter is bigger cannot be placed in foundry goods thin-walled position, because the diameter of ingate has been above the wall thickness of thin-section casting die cavity, so using the ingate of circular cross-section cannot produce thin-wall product, serious restriction is containing thin-wall product technological design.
In the patent of Application No. 201520240916.4, open a kind of ingate earthenware, including earthenware body, it is characterized in that pipe portion and flat tube portion that described earthenware body includes being wholely set, described pipe portion is connected with described flat tube portion rounding off, the area of the endoporus in described flat tube portion is more than the area of the endoporus in described pipe portion, and described pipe portion is for overlapping the end of ingate, and described flat tube portion is used for connecting casting mold die cavity.
In this patent, endoporus area by flat tube portion is designed as the area of the endoporus more than pipe portion, so when liquid flows, during pipe portion enters flat tube portion, owing to the area in flat tube portion becomes big, make liquid flow process occurs turbulent flow, sudden change, cause liquid slag inclusion and then flow in die cavity, and owing to the change of the area in flat tube portion is big, there is gap in pressure internal from running gate system to die cavity, air can be involved in and then flow in die cavity by liquid, so because of the increase of endoporus area in flat tube portion in this patent, volume gas and the slag inclusion of liquid can be caused, after entering die cavity, foundry goods is caused to form pore, pinprick, dreg defect.
Summary of the invention
It is necessary to propose a kind of uiform section without bending being connected between ingate and die cavity flat ingate earthenware that can make liquid stabilising flowing, not suddenly change.
A kind of uiform section without bending being connected between ingate and die cavity flat ingate earthenware, including porcelain tube body, lay respectively at the round mouth portion at porcelain tube body two ends and flat oral area, described porcelain tube body is the smooth surface that transition is connected between round mouth portion and flat oral area, the cross sectional shape in described round mouth portion is circular, the cross sectional shape of flat oral area is rectangle, described round mouth portion and flat oral area have identical area of section, the smooth surface of porcelain tube body also has identical area of section at diverse location, the area of section of porcelain tube body and round mouth portion, the area of section of flat oral area is identical, described round mouth portion is for overlapping the end of ingate, flat oral area is used for connecting casting mold die cavity.
In the present invention, round mouth portion and flat oral area and porcelain tube body have identical area of section, replace original equal diameter cylindrical and bending uiform section L-type pipe with this without the earthenware of bending uiform section gradual change, reduce running channel with foundry goods contact site thermal center with the purpose of shrinkage defect near reducing.
And, owing to the area of section of the flat oral area of rectangular end is identical with the area of section in the round mouth portion of round nose, according to mathematical knowledge it is known that, in the difformity structure that area is identical, the girth of circular configuration is minimum, therefore in unit distance, the girth of rectangular end is more than the girth of round nose, i.e. the surface area of rectangular end is more than the surface area of round nose, namely the area of dissipation of rectangular end is more than the area of dissipation of round nose, when the molten metal of equivalent is entered by the round mouth portion of round nose with certain speed, during being exited into foundry goods die cavity by the flat oral area of rectangular end again, not only do not have liquid sudden change turbulent flow, can also effectively prevent the generation of thermal center, avoid volume gas and the slag inclusion of liquid, and then avoid foundry goods to form pore, pinprick, dreg defect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the uiform section without bending being connected between ingate and the die cavity flat ingate earthenware of a kind of better embodiment.
Fig. 2 is the structural representation of another angle of Fig. 1.
In figure: porcelain tube body 10, round mouth portion 20, flat oral area 30.
Detailed description of the invention
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, the accompanying drawing used required in embodiment will be briefly described below, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
See Fig. 1, Fig. 2, embodiments provide a kind of uiform section without bending being connected between ingate and die cavity flat ingate earthenware, including porcelain tube body 10, lay respectively at round mouth portion 20 and the flat oral area 30 at porcelain tube body 10 two ends, porcelain tube body 10 is connected to the smooth surface between round mouth portion 20 and flat oral area 30 for transition, the cross sectional shape in round mouth portion 20 is circular, the cross sectional shape of flat oral area 30 is rectangle, round mouth portion 20 and flat oral area 30 have identical area of section, the smooth surface of porcelain tube body 10 also has identical area of section at diverse location, the area of section of porcelain tube body 10 and round mouth portion 20, the area of section of flat oral area 30 is identical, round mouth portion 20 is for overlapping the end of ingate, flat oral area 30 is used for connecting casting mold die cavity.
Further, will not produce thermal center for gate location after making liquid metal filling and dispel the heat as early as possible, the area of the rectangular end of the flat oral area 30 contacted with foundry goods is big as far as possible, the modulus that modular design is the round nose less than round mouth portion 20 of the rectangular end of flat oral area 30.
Further, minimum for the area making smooth surface, reduce scattering and disappearing of molten metal heat with the least, the modulus of the round nose in round mouth portion 20 is the half of the radius distance value of the circular cross-section of round nose.
The present invention at least has the advantages that
1) position that casting section thickness is relatively thin can be placed on, solve the problem that conventional ingate cannot be placed.
2) by using smoothly transitting of prismatic circular port and rectangular port, the generation of foundry goods thermal center can effectively be prevented.
3) can to realize ingate relatively thin with foundry goods link position wall thickness for ingate, it is simple to the cleaning of postorder foundry goods.
4) smooth surface of ingate, is possible to prevent the turbulent flow that molten iron causes before entering die cavity because of the sudden change in ingate cross section
Module or unit in embodiment of the present invention device can merge according to actual needs, divide and delete.
Above disclosed only present pre-ferred embodiments, certainly the interest field of the present invention can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that the claims in the present invention are made, still fall within the scope that invention is contained.
Claims (3)
1. one kind is connected to the flat ingate earthenware of the uiform section without bending between ingate and die cavity, it is characterized in that: include porcelain tube body, lay respectively at the round mouth portion at porcelain tube body two ends and flat oral area, described porcelain tube body is the smooth surface that transition is connected between round mouth portion and flat oral area, the cross sectional shape in described round mouth portion is circular, the cross sectional shape of flat oral area is rectangle, described round mouth portion and flat oral area have identical area of section, the smooth surface of porcelain tube body has identical area of section at diverse location, the area of section of porcelain tube body and round mouth portion, the area of section of flat oral area is identical, described round mouth portion is for overlapping the end of ingate, flat oral area is used for connecting casting mold die cavity.
The flat ingate earthenware of uiform section without bending being connected between ingate and die cavity the most as claimed in claim 1, it is characterised in that: the modulus of the rectangular end of described flat oral area is less than the modulus of the round nose in round mouth portion.
The flat ingate earthenware of uiform section without bending being connected between ingate and die cavity the most as claimed in claim 2, it is characterised in that: the half of the radius distance value of the circular cross-section that modulus is round nose of the round nose in described round mouth portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610357905.3A CN105964923B (en) | 2016-05-26 | 2016-05-26 | Be connected between ingate and cavity without the flat ingate ceramic tube of bending cross-section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610357905.3A CN105964923B (en) | 2016-05-26 | 2016-05-26 | Be connected between ingate and cavity without the flat ingate ceramic tube of bending cross-section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105964923A true CN105964923A (en) | 2016-09-28 |
| CN105964923B CN105964923B (en) | 2018-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610357905.3A Active CN105964923B (en) | 2016-05-26 | 2016-05-26 | Be connected between ingate and cavity without the flat ingate ceramic tube of bending cross-section |
Country Status (1)
| Country | Link |
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| CN (1) | CN105964923B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110355344A (en) * | 2019-08-28 | 2019-10-22 | 东北大学 | A kind of thin-walled pack alloy structural member running gate system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202411341U (en) * | 2011-12-15 | 2012-09-05 | 洛阳市兴荣工业有限公司 | Casting in-gate brick tube for complex thin-wall cast |
| CN102744370A (en) * | 2012-07-25 | 2012-10-24 | 湖南江滨机器（集团）有限责任公司 | Pouring system for permanent mold gravity casting aluminum piston |
| CN103600033A (en) * | 2013-09-22 | 2014-02-26 | 日月重工股份有限公司 | Casting structure |
| CN103978158A (en) * | 2014-04-17 | 2014-08-13 | 宁夏共享集团有限责任公司 | Ceramic casting system |
| CN204603216U (en) * | 2015-04-21 | 2015-09-02 | 宁波永祥铸造有限公司 | A kind of ingate earthenware |
-
2016
- 2016-05-26 CN CN201610357905.3A patent/CN105964923B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202411341U (en) * | 2011-12-15 | 2012-09-05 | 洛阳市兴荣工业有限公司 | Casting in-gate brick tube for complex thin-wall cast |
| CN102744370A (en) * | 2012-07-25 | 2012-10-24 | 湖南江滨机器（集团）有限责任公司 | Pouring system for permanent mold gravity casting aluminum piston |
| CN103600033A (en) * | 2013-09-22 | 2014-02-26 | 日月重工股份有限公司 | Casting structure |
| CN103978158A (en) * | 2014-04-17 | 2014-08-13 | 宁夏共享集团有限责任公司 | Ceramic casting system |
| CN204603216U (en) * | 2015-04-21 | 2015-09-02 | 宁波永祥铸造有限公司 | A kind of ingate earthenware |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110355344A (en) * | 2019-08-28 | 2019-10-22 | 东北大学 | A kind of thin-walled pack alloy structural member running gate system |
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| Publication number | Publication date |
|---|---|
| CN105964923B (en) | 2018-09-18 |
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