CN105057603A - Process for eliminating shrinkage porosity of hub casting - Google Patents
Process for eliminating shrinkage porosity of hub casting Download PDFInfo
- Publication number
- CN105057603A CN105057603A CN201510515058.4A CN201510515058A CN105057603A CN 105057603 A CN105057603 A CN 105057603A CN 201510515058 A CN201510515058 A CN 201510515058A CN 105057603 A CN105057603 A CN 105057603A
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- Prior art keywords
- rising head
- casting
- ingate
- molten iron
- heating
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Abstract
The invention discloses a process for eliminating shrinkage porosity of a hub casting. The casting, an internal casting head and an ingate are included in the process. The casting is a rotary body. The internal casting head is arranged in an inner cavity of the casting. The ingate is connected with the internal casting head and an upper annular platform of the inner cavity of the casting. Heating blocks are placed in the internal casting head. Molten iron enters the internal casting head after the casting is filled with the molten iron, and the heating blocks react to conduct heating, so that heat is complemented for the molten iron in the internal casting head and passes through the ingate to conduct feeding on the casting. The two heating blocks are placed on the internal casting head of the hub casting, react with oxygen and start to conduct self-heating after the molten iron enters the internal casting head to heat the molten iron in the internal casting head, and then sequential feeding of the casting head is realized.
Description
Technical field
The present invention relates to auto parts and components and accessory manufacturing technology field, more particularly, relate to solve Hub Castings Shrinkage Porosity technique.
Background technology
At present, Hub Castings product is mostly the annular cast of hollow, and outside is then form of flanges, and part flange has reinforcement.In the position that flange connects with circular-hole internal-wall and stopping-off piece owing to being mostly thermal center, molten iron is final set always.Because feeding distance is remote, adopt the mode of outside riser feeding to be difficult to molten iron to cover cast-internal, therefore more or less there is unsound phenomenon in Hub Castings product, and inside very easily exists shrinkage cavity or shrinkage defect.Current most producer takes interiorly solve by interior rising head scheme or reduce foundry goods shrinkage cavity shrinkage porosity.But due to technological design, science is not lack of standardization, and interior rising head does not play due effect, still there will be unsound defects such as there being shrinkage cavity shrinkage porosity.
Summary of the invention
The present invention, for solving the deficiencies in the prior art, provides a kind of rational in infrastructure, solution Hub Castings Shrinkage Porosity technique that castability is excellent, to solve Hub Castings Shrinkage Porosity problem.
The technical solution adopted for the present invention to solve the technical problems is: a kind of solution Hub Castings Shrinkage Porosity technique, comprise foundry goods, interior rising head, ingate, described foundry goods is revolving body, described interior rising head is arranged on the inner chamber of foundry goods, the upper land of rising head and core cavity in ingate connects, and places heating block in described interior rising head inside, molten iron enters in described interior rising head after filling foundry goods, heating block reacts heating, makes the molten iron additional heat in interior rising head, through ingate to feeding a casting.
Described ingate is four.
Described ingate is distributed in the inner circle of land on core cavity.
Two pieces of heating blocks are placed in described interior rising head inside.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention, in hub cast, rising head places two pieces of heating blocks, and after molten iron enters, heating block and oxygen reaction start spontaneous heating, and the molten iron in heating in rising head, realizes the order feeding of rising head.
Accompanying drawing explanation
Fig. 1 is the dead head structure schematic diagram that the present invention solves Hub Castings Shrinkage Porosity technique.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
See Fig. 1, the invention provides a kind of novel normalization process for solving or reduce wheel hub shrinkage porosite problem.Comprise foundry goods 1, interior rising head 2, ingate 21, described foundry goods is revolving body, described interior rising head is arranged on the inner chamber of foundry goods, the upper land 11 of rising head and core cavity in ingate connects, place heating block 3 in described interior rising head inside, molten iron enters in described interior rising head after filling foundry goods, and heating block reacts heating, make the molten iron additional heat in interior rising head, through ingate to feeding a casting.
Hub cast 1 arranges interior rising head 2 at the center of revolving body, realizes feeding by interior rising head, and interior rising head and foundry goods entity die cavity must have the temperature difference, and namely the temperature of rising head is higher than the temperature at foundry goods thermal center place.Therefore, in interior rising head 2, place heating block 3, after molten iron enters, heating block and oxygen reaction start spontaneous heating, and the molten iron in heating in rising head, realizes the order feeding of rising head.
Interior riser feeding will have certain pressure, namely the height of rising head is wanted rationally, higher than the riser height of general foundry goods, the riser height of hub cast 1 of the present invention by original a little less than foundry goods height, now change into than foundry goods height 50-80mm, in built-in rising head, place the heating block of two pieces of 40*40 specifications.
Interior riser feeding must ensure that Feeding channel is unimpeded, and the size of ingate 21 is wanted rationally.Therefore, widen the ingate of built-in rising head when designing and allowing, the quantity of ingate 21 is increased to four, be distributed in the inner circle of land on core cavity, and ingate size changes 10X26 into by original 7X24.
Heating block is applicable to the thermite in foundry goods manufacture, and thermite material additive is solidified into bulk, is the product that the riser heating and insulating such as a kind of open riser and the common rising head of sand mold covers.Heating block generation thermit reaction, it, in the heating of rising head combustion, makes the molten steel solidification time lengthening 4-5 times of rising head, and temperature retention time can reach 30 clocks thus ensure the feeding effect of foundry goods, substantially increases casting quality.
Below openly specific embodiments of the invention are only; do not form limiting the scope of the invention; for general technical staff of the technical field of the invention; do not departing under general idea prerequisite of the present invention; according to technical solution of the present invention do without the need to through the change of creative work and replacement, all should drop within protection scope of the present invention.
Claims (4)
1. one kind solves Hub Castings Shrinkage Porosity technique, comprise foundry goods, interior rising head, ingate, described foundry goods is revolving body, it is characterized in that: described interior rising head is arranged on the inner chamber of foundry goods, the upper land of rising head and core cavity in ingate connects, place heating block in described interior rising head inside, molten iron enters in described interior rising head after filling foundry goods, heating block reacts heating, makes the molten iron additional heat in interior rising head, through ingate to feeding a casting.
2. solution Hub Castings Shrinkage Porosity technique according to claim 1, is characterized in that: described ingate is four.
3. solution Hub Castings Shrinkage Porosity technique according to claim 2, is characterized in that: described ingate is distributed in the inner circle of land on core cavity.
4. the solution Hub Castings Shrinkage Porosity technique according to Claims 2 or 3, is characterized in that: two pieces of heating blocks are placed in described interior rising head inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510515058.4A CN105057603A (en) | 2015-08-21 | 2015-08-21 | Process for eliminating shrinkage porosity of hub casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510515058.4A CN105057603A (en) | 2015-08-21 | 2015-08-21 | Process for eliminating shrinkage porosity of hub casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105057603A true CN105057603A (en) | 2015-11-18 |
Family
ID=54487237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510515058.4A Pending CN105057603A (en) | 2015-08-21 | 2015-08-21 | Process for eliminating shrinkage porosity of hub casting |
Country Status (1)
| Country | Link |
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| CN (1) | CN105057603A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106955973A (en) * | 2017-05-18 | 2017-07-18 | 天润曲轴股份有限公司 | Cast rising head |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2598974B2 (en) * | 1988-07-31 | 1997-04-09 | 旭テック株式会社 | Casting equipment |
| JP2004358511A (en) * | 2003-06-04 | 2004-12-24 | Asahi Tec Corp | Method for releasing cast wheel of two-wheeled vehicle from die |
| CN101530893A (en) * | 2009-04-29 | 2009-09-16 | 淮阴工学院 | Gating system for light alloy castings of wheels |
| CN103317100A (en) * | 2012-03-21 | 2013-09-25 | 中集车辆（集团）有限公司 | Method for manufacturing ductile iron hub |
-
2015
- 2015-08-21 CN CN201510515058.4A patent/CN105057603A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2598974B2 (en) * | 1988-07-31 | 1997-04-09 | 旭テック株式会社 | Casting equipment |
| JP2004358511A (en) * | 2003-06-04 | 2004-12-24 | Asahi Tec Corp | Method for releasing cast wheel of two-wheeled vehicle from die |
| CN101530893A (en) * | 2009-04-29 | 2009-09-16 | 淮阴工学院 | Gating system for light alloy castings of wheels |
| CN103317100A (en) * | 2012-03-21 | 2013-09-25 | 中集车辆（集团）有限公司 | Method for manufacturing ductile iron hub |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106955973A (en) * | 2017-05-18 | 2017-07-18 | 天润曲轴股份有限公司 | Cast rising head |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151118 |