CN105057597B - The technique for solving brake drum top surface R angles shrinkage porosite - Google Patents
The technique for solving brake drum top surface R angles shrinkage porosite Download PDFInfo
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- CN105057597B CN105057597B CN201510514343.4A CN201510514343A CN105057597B CN 105057597 B CN105057597 B CN 105057597B CN 201510514343 A CN201510514343 A CN 201510514343A CN 105057597 B CN105057597 B CN 105057597B
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- brake drum
- heating block
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Abstract
The technique that the present invention discloses a kind of solution brake drum top surface R angles shrinkage porosite, including core, rising head, running channel, the casting is revolving body, the core is arranged in the centre bore of revolving body, the rising head is arranged on the top at the top of casting die cavity, the rising head is pressed on casting die cavity and core, the core upper end sets depression, depression is connected with rising head, place heating block in depression, molten iron enter after filling casting from the running channel it is described emit intraoral, heating block reacts heating, make to emit intraoral molten iron additional heat, from top to bottom to feeding a casting.The present invention realizes the feeding of grey casting brake drum top surface by the way of blank riser built-in heating block.In the intraoral placement heating block that emits of casting, heating block reacts heating molten iron, and the high temperature liquid iron in blank riser can realize the feeding to casting top surface, feeding distance up to fillet at, shrinkage porosite at fillet can be made to reduce to acceptable 12 grades and even to be disappeared.
Description
Technical field
It is to be related to solve brake drum top more specifically the present invention relates to auto parts and components and accessories manufacturing technical field
The technique of face R angles shrinkage porosite.
Background technology
Brake drum class product is mostly annular cast, and structure is simpler, but shrinkage defect easily occurs at top surface fillet
（See Fig. 1 label A pointed locations）, can not then be used more than three-level shrinkage porosite.At present, generally entered using the side riser more slightly higher than casting
Row feeding, Quench is carried out to thermal center position in side riser feeding less than in the case of using cooling muscle, but above two scheme is all
There is unstable phenomenon.
The content of the invention
The present invention is solution the deficiencies in the prior art, there is provided a kind of excellent solution brake drum of rational in infrastructure, castability
The technique of top surface R angles shrinkage porosite, to solve the problems, such as shrinkage porosite of the brake drum class cast product top surface including fillet etc..
The technical solution adopted for the present invention to solve the technical problems is：A kind of work of solution brake drum top surface R angles shrinkage porosite
Skill, including core, rising head, running channel, the casting is revolving body, and the core is arranged in the centre bore of revolving body, described to emit
Mouth is arranged on the top at the top of casting die cavity, and the rising head is pressed on casting die cavity and core, and the core upper end sets depression,
Depression is connected with rising head, and heating block is placed in depression, and molten iron emits intraoral, generates heat after filling casting from the running channel into described
Block reacts heating, makes to emit intraoral molten iron additional heat, from top to bottom to feeding a casting.
The rising head is ring-type, in uniform three heating blocks of the depression inner periphery of core.
The heating block is as obtained in thermite.
The running channel is arranged on outside the cylindrical bulge loop of brake drum, and molten iron injects along running channel from the cylindrical bulge loop of brake drum.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention realizes the feeding of grey casting brake drum top surface by the way of blank riser built-in heating block.In casting
Emit intraoral placement heating block, heating block reacts heating molten iron, the high temperature liquid iron in blank riser can be realized to casting top
The feeding in face, feeding distance up to fillet at, can make shrinkage porosite at fillet reduce to acceptable 1-2 grades even disappear.
Brief description of the drawings
Fig. 1 is the dead head structure schematic diagram of the technique that the present invention solves brake drum top surface R angles shrinkage porosite.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, is only used for explaining the present invention, and is not considered as limiting the invention.
Referring to Fig. 1, the invention provides a kind of technique of solution brake drum top surface R angles shrinkage porosite, including core 2, rising head 3,
Running channel（It is not shown）, casting is revolving body, and core is arranged in the centre bore of revolving body, and rising head is arranged on the top of casting die cavity 1
Top, rising head 3 is pressed on casting die cavity 1 and core 2, and core upper end sets depression, and depression is connected with rising head, is put in being recessed
Put heating block 4, molten iron enters in rising head after filling casting from running channel, heating block reacts heating, makes to emit intraoral molten iron benefit
Heat is filled, from top to bottom to feeding a casting.
Rising head 3 is ring-type, in uniform three heating blocks of the depression inner periphery of core.Heating block is obtained by thermite
's.Running channel is arranged on outside the cylindrical bulge loop 11 of brake drum, and molten iron injects along running channel from the cylindrical bulge loop 11 of brake drum.
Rising head is blank riser, and a cuboid for 41* 21* thickness 10 wide long is installed in the lower section of blank riser.After moulding
A groove for above-mentioned size is then formed on sand mold, three heating blocks are placed in three grooves.During cast, molten iron is full of
Enter in blank riser after casting, heating block reacts heating molten iron, the high temperature liquid iron in blank riser can be realized to casting
The feeding of part top surface, feeding distance up to fillet at, can make shrinkage porosite at fillet reduce to acceptable 1-2 grades even disappear.
Heating block applies to the thermite in casting manufacture.It is the riser heating such as a kind of open riser and the common rising head of sand mold
It is incubated the product of covering.There is thermit reaction in heating block, its combustion heating in rising head makes the molten steel solidification time lengthening of rising head
4-5 times, soaking time, so as to ensure the feeding effect of casting, substantially increases casting quality up to 30 clocks.
Above disclosure is only specific embodiment of the invention, does not constitute limiting the scope of the invention, for this
For the those of ordinary skill of technical field that the present invention belongs to, under the premise of general idea of the invention is not departed from, according to the present invention
What technical scheme was made needs not move through the variations and alternatives of creative work, should all fall within the scope and spirit of the invention.
Claims (2)
1. the technique of a kind of solution brake drum top surface R angles shrinkage porosite, including core, rising head, running channel, casting is revolving body, the sand
Core is arranged in the centre bore of revolving body, it is characterised in that：The rising head is arranged on the top at the top of casting die cavity, the rising head
It is pressed on casting die cavity and core, the core upper end sets depression, depression is connected with rising head, and heating block is placed in depression,
Molten iron enter after filling casting from the running channel it is described emit intraoral, heating block reacts heating, makes to emit intraoral molten iron supplement
Heat, from top to bottom to feeding a casting；The rising head is ring-type, in uniform three heating blocks of the depression inner periphery of core；Emit
Mouth is blank riser, and a cuboid of 41mm* 21mm* thickness 10mm wide long is installed in the lower section of blank riser；Then exist after moulding
A groove for above-mentioned size is formed on sand mold, three heating blocks are placed in three grooves；The heating block is by aluminothermy
Obtained in agent.
2. the technique of solution brake drum top surface R angles according to claim 1 shrinkage porosite, it is characterised in that：The running channel is set
Outside the cylindrical bulge loop of brake drum, molten iron injects along running channel from the cylindrical bulge loop of brake drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510514343.4A CN105057597B (en) | 2015-08-21 | 2015-08-21 | The technique for solving brake drum top surface R angles shrinkage porosite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510514343.4A CN105057597B (en) | 2015-08-21 | 2015-08-21 | The technique for solving brake drum top surface R angles shrinkage porosite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105057597A CN105057597A (en) | 2015-11-18 |
| CN105057597B true CN105057597B (en) | 2017-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510514343.4A Active CN105057597B (en) | 2015-08-21 | 2015-08-21 | The technique for solving brake drum top surface R angles shrinkage porosite |
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| CN (1) | CN105057597B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113680973A (en) * | 2021-09-01 | 2021-11-23 | 西峡县众德汽车部件有限公司 | Double-flow-passage volute top partition plate air hole and shrinkage porosity solving process |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3344966B2 (en) * | 1999-04-12 | 2002-11-18 | 保土谷アシュランド株式会社 | Method for manufacturing sleeve for feeder |
| CN2905267Y (en) * | 2006-03-14 | 2007-05-30 | 张敏 | Composite type heat-insulation heating casting head envelope structure |
| CN201779184U (en) * | 2010-09-07 | 2011-03-30 | 江苏金石铸锻有限公司 | Phi640 brake disc for coaches |
| CN103317100B (en) * | 2012-03-21 | 2016-05-04 | 中集车辆（集团）有限公司 | A kind of method of manufacturing S. G. Cast Iron Wheel Hub |
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| CN105057597A (en) | 2015-11-18 |
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