CN201470880U - Argon shielding device for casting of die casting - Google Patents
Argon shielding device for casting of die casting Download PDFInfo
- Publication number
- CN201470880U CN201470880U CN2009202086336U CN200920208633U CN201470880U CN 201470880 U CN201470880 U CN 201470880U CN 2009202086336 U CN2009202086336 U CN 2009202086336U CN 200920208633 U CN200920208633 U CN 200920208633U CN 201470880 U CN201470880 U CN 201470880U
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- casting
- argon
- pipe
- protective sleeve
- breather pipe
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Abstract
The utility model relates to an argon shielding device for casting of die casting, which is arranged between a ladle nozzle and a casting central runner, and comprises a fixed bracket, a protective sleeve and a gas inlet pipe, wherein the protective sleeve is conical with a small lower part and a large upper part, and is connected with the fixed bracket, an upper port of the protective sleeve is sheathed at the outer side of the ladle nozzle, the upper port and a lower port of the protective sleeve are respectively connected with a ring-shaped ventilating pipe, the two ventilating pipes are communicated by a communicating pipe, and the pipe walls of the ventilating pipe are downward provided with a plurality of gas outlets; and the gas inlet pipe is connected below the fixed bracket, one end of the gas inlet pipe is introduced with argon and the other end thereof is communicated with the ventilating pipe at the lower port of the protective sleeve. The argon flow formed by the gas outlets of the ventilating pipes is guided to two sides along the inner wall of the protective sleeve, completely covers the space between the ladle nozzle and the casting central runner and isolating the contacting of bared steel flow and the air, thus greatly enhancing the argon-shielding effect and obtaining molten steel with high purity and little gas content; and in addition, the argon shielding device is characterized by simple structure, repeated use and low use cost.
Description
Affiliated field
The utility model belongs to the die casting casting technique in the field of metallurgy, particularly a kind of argon protective device that is used for the die casting casting.
Background technology
The method of solidification forming of in the Ferrous Metallurgy molten steel being cast generally can be divided into: continuous casting and die casting.Though the method that die casting is produced has the low shortcoming of recovery rate than continuous casting, but it is low that it has equipment investment cost, the simple adaptable characteristics of method, some special steel grades are arranged, when adopting continuous cast method production (casting difficulty height, can't meet the quality requirement etc.) time, die casting provides the assurance of producing.But for the advantage that continuous casting can be taked totally-enclosed protection casting, when die casting is produced, provide argon shield, prevent that the effect of secondary oxidation from just seeming particularly important.
During die casting is produced; ladle nozzle is that steel stream is exposed aerial to a segment distance is arranged between casting feed trumpet (employing make a bet method) or ingot mould (employing top teeming process) upper edge; how protecting this section steel stream, avoid it to produce secondary oxidation, is the key that guarantees product quality.Now more is the means that adopt blowing argon, forms the argon shield air film between steel stream and air, avoids the catalytic oxidation of air and molten steel.Present argon protective device; be on feed trumpet, to install the argon seal that a refractory material is made additional mostly; when casting, form aerosol; these class methods; protection domain is narrower; argon flow amount is little; then still can not avoid secondary oxidation, after argon flow amount is big, is easy to generate gas (argon gas) and is involved in steel stream; in the ingot solidification process, may form rimhole; and it is after argon flow amount is big,, serious to the heat absorption of exposed steel stream because the forced flow of argon gas stream is too fast; molten steel temperature drop is too fast, forms dross.Therefore, how effectively to control argon gas stream, fully effectively avoid secondary oxidation, do not influence casting again simultaneously, the problem that will consider when being the argon protective device design.
China Patent No. CN02266115.8 discloses the totally-enclosed argon for protecting pouring device of a kind of die casting; in the middle of ladle and feed trumpet, use branch sleeve; on the ring-like carriage of barrel bore top and stop sleeve blowing argon has been improved the condition of argon shield in the casting preferably.But this method is because the Argon position of the ring-like carriage of metal, and it is far away that distance goes out behind the sleeve position of exposed steel stream, and because its flat structure, the direction control unstable (as previously mentioned, argon flow amount can not be too big) of air-flow is so exist certain defective.
Summary of the invention
The purpose of this utility model is a kind of argon protective device that is used for the die casting casting of design; make high-temperature molten steel when the ladle bottom mouth of a river is molded into the feed trumpet cast gate; be under the good totally-enclosed argon shield casting condition; thereby avoided when casting stream is exposed, secondary oxidation taking place, improved the degree of purity and the ingot quality of molten steel.
The technical solution of the utility model is,
A kind of argon protective device that is used for the die casting casting is arranged between ladle nozzle and the casting feed trumpet; Comprise: fixed support; Protection sleeve is the big little taper of, is connected with fixed support, its upper port is sheathed on the ladle nozzle outside, its upper and lower port respectively is connected with a loop draught pipe, and two breather pipes are connected by a connecting pipe, and described breather pipe tube wall offers some ventholes downwards; Air inlet pipe is connected in the fixed support below, and an end feeds argon gas, and the other end is communicated with the breather pipe of described protection sleeve lower port.
Further, the tapering of described protection sleeve is tangent with casting feed trumpet outer.
Again; the venthole quantity of described protection sleeve lower port breather pipe is greater than the upper port breather pipe: in order fully to guarantee the airtight protection to exposed molten steel; the venthole argon flow amount of protection sleeve lower port breather pipe is greater than the flow of upper end breather pipe, to guarantee the fully protection of end opening to exposed molten steel.By the quantity control to last tunger tube and following tunger tube tube wall venthole, tunger tube is 1 with following tunger tube venthole quantity ratio in the order: (4～5), the argon flow amount of promptly going up tunger tube and following tunger tube is about 1: (4～5), the argon flow amount of cooperation are 20～40Nm
3/ hour, to guarantee sufficient argon shield, the effect of airtight steel stream.
Major advantage of the present utility model is:
The argon protective device that the utility model is used for die casting casting by the control argon gas stream along the protection sleeve inwall to the both sides water conservancy diversion; the argon gas stream thigh is impacted in casting feed trumpet horn mouth upper edge; cover ladle nozzle and the space of casting and not being connected between the feed trumpet fully; isolated exposed steel stream contacts with air; avoided when casting stream is exposed, secondary oxidation taking place, made the effect of argon shield strengthen greatly.Have simple to operate, reasonable in design, effective, the high purity of molten steel of protection, characteristics that gas content is few, and apparatus structure is simple, can use repeatedly, use cost is low.
Description of drawings
Fig. 1 is the structural representation of the utility model argon protective device;
Fig. 2 is the utility model argon protective device Center Vent tube venthole schematic diagram of arranging;
Fig. 3 is the installation site schematic diagram of the utility model argon protective device.
The specific embodiment
Referring to Fig. 1～Fig. 3, the argon protective device that is used for the die casting casting of the present utility model is arranged between ladle nozzle 1 and the casting feed trumpet 2, comprising: fixed support 3; Protection sleeve 4, be the big little taper of, lateral wall is connected with fixed support 3, its upper port is sheathed on ladle nozzle 1 outside, its upper and lower port is connected with loop draught pipe 401,402 respectively, breather pipe 401 and breather pipe 402 are connected by a connecting pipe 403, and the tube wall of described breather pipe 401,402 offers some ventholes 4011,4021 respectively downwards; Air inlet pipe 5 is connected in fixed support 3 belows, and an end feeds argon gas, and the other end is communicated with the breather pipe 402 of described protection sleeve 4 lower port.
When carrying out the die casting casting operation, ladle is in place on buggy ladle, in ladle nozzle 1 outside sheathed on protection sleeve 4, buggy ladle moves to the cast gate top of casting feed trumpet 2, about cast gate upper edge distance protection sleeve 4 end opening 80mm, centering; Open the argon gas valve and feed argon gas by air inlet pipe 5, argon gas enters breather pipe 402 from air inlet pipe 5, enter breather pipe 401 by communicating pipe 403 again, form the argon gas loop, argon gas penetrates from the venthole 4021,4011 that breather pipe 402 and breather pipe 401 tube walls are arranged, form downward argon gas air curtain on the one hand below breather pipe 402, argon gas stream rushes at casting feed trumpet 2 outers, forms protection; Form even argon gas stream downwards at breather pipe 401 on the other hand and form outside tubaeform air-flow along protection sleeve 4 inwalls; the backlash of argon stream expanded by heating is to the upper edge of casting feed trumpet 2; and outwards air-flow (referring to Fig. 3) is protected in formation; secluding air, it is 6 air-breathing and form secondary oxidation and be mingled with to prevent that exposed steel from flowing.In the present embodiment, the control argon flow amount is 23Nm
3/ hour, guarantee when preventing secondary oxidation, prevent that argon gas is involved in molten steel, cause to seethe.
Referring to Fig. 2, evenly be placed with venthole 4011,4021 on the tube wall of described breather pipe 401,402 respectively, in the present embodiment, the quantity ratio of venthole 4011 and venthole 4021 is 1: 4.
Claims (4)
1. an argon protective device that is used for the die casting casting is arranged between ladle nozzle and the casting feed trumpet; It is characterized in that, comprising: fixed support; Protection sleeve is the big little taper of, is connected with fixed support, its upper port is sheathed on the ladle nozzle outside, its upper and lower port respectively is connected with a loop draught pipe, and this two breather pipe is connected by a connecting pipe, and described breather pipe tube wall offers some ventholes downwards; Air inlet pipe, an end feeds argon gas, and the other end is communicated with the breather pipe of described protection sleeve lower port.
2. the argon protective device that is used for the die casting casting as claimed in claim 1 is characterized in that, the tapering of described protection sleeve is tangent with casting feed trumpet outer.
3. the argon protective device that is used for the die casting casting as claimed in claim 1 or 2 is characterized in that the venthole quantity that described protection sleeve lower port breather pipe is offered is greater than upper port breather pipe quantity.
4. the argon protective device that is used for the die casting casting as claimed in claim 3 is characterized in that the breather pipe of described protection sleeve upper port is 1: 4～1: 5 with the breather pipe venthole quantity ratio of lower port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202086336U CN201470880U (en) | 2009-08-28 | 2009-08-28 | Argon shielding device for casting of die casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202086336U CN201470880U (en) | 2009-08-28 | 2009-08-28 | Argon shielding device for casting of die casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201470880U true CN201470880U (en) | 2010-05-19 |
Family
ID=42407121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202086336U Expired - Lifetime CN201470880U (en) | 2009-08-28 | 2009-08-28 | Argon shielding device for casting of die casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201470880U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102335740A (en) * | 2011-09-28 | 2012-02-01 | 苏州宝蠡耐火材料有限公司 | Die-casting argon-blowing protection device |
| CN103480834A (en) * | 2013-09-27 | 2014-01-01 | 中核苏阀横店机械有限公司 | Device and method for utilizing argon flow to protect molten steel injection flow |
| CN104117667A (en) * | 2014-08-01 | 2014-10-29 | 莱芜钢铁集团有限公司 | Sealing argon blowing protection device and method for nozzles of tundish for continuous casting |
| CN104525866A (en) * | 2014-12-18 | 2015-04-22 | 中核苏阀横店机械有限公司 | Device and method for preventing molten steel oxidation during pouring by utilizing CO2 gas |
| CN106825462A (en) * | 2017-01-13 | 2017-06-13 | 北京科技大学 | One kind cast steel ingot protection device and application method |
| CN106890990A (en) * | 2015-12-18 | 2017-06-27 | 中国科学院金属研究所 | A kind of totally-enclosed airtight protection device of rising pouring steel ingot feed trumpet and guard method |
| CN109226730A (en) * | 2018-11-14 | 2019-01-18 | 安徽应流集团霍山铸造有限公司 | The device of metal liquid oxidation is prevented when a kind of casting |
-
2009
- 2009-08-28 CN CN2009202086336U patent/CN201470880U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102335740A (en) * | 2011-09-28 | 2012-02-01 | 苏州宝蠡耐火材料有限公司 | Die-casting argon-blowing protection device |
| CN103480834A (en) * | 2013-09-27 | 2014-01-01 | 中核苏阀横店机械有限公司 | Device and method for utilizing argon flow to protect molten steel injection flow |
| CN104117667A (en) * | 2014-08-01 | 2014-10-29 | 莱芜钢铁集团有限公司 | Sealing argon blowing protection device and method for nozzles of tundish for continuous casting |
| CN104117667B (en) * | 2014-08-01 | 2016-01-20 | 莱芜钢铁集团有限公司 | The device and method that continuous casting intermediate inlet is protected with sealed argon-blowing |
| CN104525866A (en) * | 2014-12-18 | 2015-04-22 | 中核苏阀横店机械有限公司 | Device and method for preventing molten steel oxidation during pouring by utilizing CO2 gas |
| CN106890990A (en) * | 2015-12-18 | 2017-06-27 | 中国科学院金属研究所 | A kind of totally-enclosed airtight protection device of rising pouring steel ingot feed trumpet and guard method |
| CN106825462A (en) * | 2017-01-13 | 2017-06-13 | 北京科技大学 | One kind cast steel ingot protection device and application method |
| CN106825462B (en) * | 2017-01-13 | 2018-11-27 | 北京科技大学 | A kind of casting steel ingot protective device |
| CN109226730A (en) * | 2018-11-14 | 2019-01-18 | 安徽应流集团霍山铸造有限公司 | The device of metal liquid oxidation is prevented when a kind of casting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BAOSTEEL SPECIAL STEEL CO., LTD. Free format text: FORMER OWNER: BAOSHAN IRON + STEEL CO., LTD. Effective date: 20131216 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201900 BAOSHAN, SHANGHAI TO: 200940 BAOSHAN, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131216 Address after: 200940 No. 1269 fishery Road, Shanghai Patentee after: BAOSTEEL SPECIALSTEEL CO., LTD. Address before: 201900 Shanghai City, Mudanjiang Road No. 1813 South Patentee before: Baoshan Iron & Steel Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100519 |
|
| CX01 | Expiry of patent term |