CN204075135U - Vacuum drying oven cooling nozzle - Google Patents
Vacuum drying oven cooling nozzle Download PDFInfo
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- CN204075135U CN204075135U CN201420496760.1U CN201420496760U CN204075135U CN 204075135 U CN204075135 U CN 204075135U CN 201420496760 U CN201420496760 U CN 201420496760U CN 204075135 U CN204075135 U CN 204075135U
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Abstract
A kind of vacuum drying oven cooling nozzle, comprise vacuum furnace, nozzle, extended jet nozzle, thermocouple, deep-small hole die casting, number row nozzle is provided with in described vacuum furnace, often arrange nozzle to distribute with decile in vacuum furnace, it is characterized in that described nozzle installs extended jet nozzle additional, the length of extended jet nozzle is set to 50 ~ 250mm according to the depth of deep-small hole die casting profile, the distance of extended jet nozzle end face and mould cavity surface is 450 ~ 600mm, charging tray is provided with in vacuum furnace, deep-small hole die casting to be placed on charging tray and to be in vacuum furnace center, several thermocouple is placed on the surface of deep-small hole die casting.The utility model has the advantages that and deep-small hole die casting cooling velocity is obviously promoted, surface cool speed is accelerated, thus solves the cooling rate problem of deep-small hole die casting recess, promotes heat treatment performance, solves deep-small hole die casting surface cooling rate problem of non-uniform.
Description
Technical field
The utility model relates to a kind of mould vacuum heat treatment equipment, particularly a kind of vacuum drying oven cooling nozzle.
Background technology
Die casting was more and more extensive in the application of each field in recent years, and to the development of ultra-large type die casting, shape becomes increasingly complex, and die cavity is more and more darker, thus has had higher requirement to mold materials and heat treated performance.Current die casting generally adopts vacuum air-quenching furnace to heat-treat, because mould distance cold air source is far away during cooling, cause gas directly can not blow key position to mould, general vacuum heat treatment equipment all cannot make bottom mold cavity or root reaches cooling rate faster, thus the local of mould does not reach good performance when making heat treatment, because performance is undesirable, cause in use mould, at this position, initial failure occurs, and the key position of the bottom of die cavity and root die-cast product exactly, affect the presentation quality of die-cast product, finally because the outward appearance of product cannot reach requirement, and cause the premature failure of mould.Thus how improving the cavity bottom of mould and the heat treatment performance of root, will be the emphasis problem studied in industry.
Cooling velocity during quenching is faster, and the heat treatment performance of its mould is better, so how to make the quench cooling rate of the cavity bottom of deep-small hole die casting and root improve the research direction becoming and improve heat treatment performance.Once this problem is resolved, significantly will promotes greatly and the heat treatment performance of deep-small hole mould, thus will effectively improve the life-span of deep-small hole die casting.During due to current vacuum heat treatment equipment heat treatment deep-small hole die casting, the bottom of die cavity or root cooling rate are comparatively slow, and when the gas distance mould sprayed in nozzle when cooling is far away, will reduces cooling rate, and affect die & mold treatment performance.Mold shape is of all kinds simultaneously, have die punch step etc., from nozzle to concave die cavity or the diverse location such as punch root distance different, cause cooling rate uneven, thus make deep-small hole die casting various point locations heat treatment performance disunity, even cause distortion and cracking risk that mould is large.Cause thermal effectiveness undesirable because cooling velocity is uneven, its main cause be cold air spacing from deep-small hole die casting away from, as long as so solve problem distant between cold air source and deep-small hole die casting, the distance how furthered between die cavity and cold air source, thus improving the cooling rate of mold cavity, this is the problem of the utility model research.
Summary of the invention
The purpose of this utility model is the defect for existing in prior art, provides a kind of vacuum drying oven cooling nozzle.The technical solution of the utility model comprises: vacuum furnace, nozzle, extended jet nozzle, thermocouple, deep-small hole die casting, number row nozzle is provided with in described vacuum furnace, often arrange nozzle to distribute with decile in empty heating furnace, generally with 30 ° of one row's distribution, whole vacuum furnace is divided into 12 row's nozzles, often row arranges 6 nozzles, it is characterized in that described nozzle installs extended jet nozzle additional, the length of extended jet nozzle is set to 50 ~ 250mm according to the depth of deep-small hole die casting profile, reaches 450 ~ 600mm to make the distance of extended jet nozzle end face and mould cavity surface.Be provided with charging tray in vacuum furnace, deep-small hole die casting to be placed on charging tray and to be in vacuum furnace center, and several thermocouple is placed on the surface of deep-small hole die casting.
The profile of the described extended jet nozzle processed by graphite type material is cylinder, inside is processed with circular hole, its inner first half section is round table-like, extended jet nozzle is sleeved on jet hole, the wall at the rear portion of extended jet nozzle is provided with the screwed hole of several fixing extended jet nozzle, and extended jet nozzle is fixed on nozzle through screwed hole by bolt.
The utility model has the advantages that and efficiently solve deep-small hole die casting surface cooling rate problem of non-uniform.During cooling, extended jet nozzle will spray cold air, directly be sprayed onto die surface, and the gas of heating, through over-heat-exchanger, sprays again in extended jet nozzle, form a kind of circulation, reach the object that deep-small hole die casting evenly and rapidly cools.Deep-small hole die casting cooling velocity is obviously promoted, and surface cool speed is accelerated, thus solves the cooling rate problem of deep-small hole die casting recess, promotes heat treatment performance.
Accompanying drawing explanation
Fig. 1 vacuum furnace nozzle plane layout drawing;
The structural representation of Fig. 2 extended jet nozzle and nozzle suit;
The left TV structure schematic diagram of Fig. 3 extended jet nozzle and nozzle suit;
The A-A face sectional structure schematic diagram of Fig. 4 extended jet nozzle and nozzle suit;
In Fig. 5 embodiment, deep-small hole die casting is placed on the structural representation on charging tray;
A-A face sectional structure schematic diagram in Fig. 6 Fig. 6;
B-B face sectional structure schematic diagram in Fig. 7 Fig. 6;
In figure: 1 nozzle, 2 extended jet nozzles, 3 vacuum furnaces, 4 deep-small hole die castings, 5 screwed holes, 6 bolts, 7 thermocouples.
Detailed description of the invention
Embodiment of the present utility model is further illustrated below in conjunction with accompanying drawing:
Be provided with 12 row's nozzles in the vacuum furnace 3 of the present embodiment, often arrange nozzle in vacuum furnace 3 with 30 ° of decile distributions.See the positions in Fig. 1, figure with 0 ° ~ 330 ° being 12 row's nozzles, the position of often arranging nozzle is provided with 6 nozzles 1, in vacuum furnace 3, has 72 nozzles 1.Each nozzle 1 is provided with extended jet nozzle 2, the profile of the extended jet nozzle 2 processed by graphite type material is cylinder, inside is processed with circular hole, its inner first half section is round table-like, extended jet nozzle 2 is sleeved on jet hole 1, the wall at the rear portion of extended jet nozzle 2 is provided with the screwed hole 5 of several fixing extended jet nozzle, and extended jet nozzle 2 is fixed on nozzle 1 through screwed hole 5 by bolt 6.Extended jet nozzle is 50 ~ 250mm according to the length that the depth of deep-small hole die casting is arranged, the present embodiment deep-small hole die casting 4 has die punch, mould shove charge position varies, utilize the selective extended jet nozzle 2 installing 72 diverse locations and varying number or different length additional of prolonging nozzle 1 that the cooling rate of deep-small hole die casting 4 can be made to accelerate or evenly cooling, thus reach desirable die & mold treatment performance.Select the length of suitable extended jet nozzle 2 and loading position and quantity according to the concrete shape of deep-small hole die casting 4 and shove charge position, thus make the distance between the nozzle face installed after extended jet nozzle 2 and the face, chamber of deep-small hole die casting 4 reach 450 ~ 600mm.Such solution causes cooling bad and uneven problem because nozzle face and deep-small hole die casting surface distance differ.Be provided with charging tray in vacuum furnace 3, deep-small hole die casting 4 to be placed on charging tray and to be in vacuum furnace center, and 9 thermocouples 7 are placed on the surface of deep-small hole die casting 4.
During cooling, extended jet nozzle 2 will spray cold air, directly be sprayed onto the surface of deep-small hole die casting 4, and heating gas, through over-heat-exchanger, then again from ejection in extended jet nozzle 2, forms a kind of circulation, reaches the object that deep-small hole die casting 4 cools.
The present embodiment, after adopting same Technology for Heating Processing quench cooled, is compared with the data not installing extended jet nozzle 2 additional, is referred to table 1.
Table 1: do not install extended jet nozzle and the test data contrast table installing extended jet nozzle additional additional.
As can be seen from the above table, after nozzle 1 installs extended jet nozzle 2 additional, cooling velocity obviously promotes, and surperficial cooling rate generally improves about 50%.Thus the cooling rate problem of deep-small hole die casting 4 recess can be solved, promote heat treatment performance.Install diverse location additional and varying number invention nozzle solves die surface cooling rate problem of non-uniform equally simultaneously.
By testing above and can finding out, through installing the mode of extended jet nozzle 2 additional, cooling rate will obviously be promoted.
The application of the nozzle of the present embodiment has stronger versatility, except the mould of die class talked about above, for the mould of all the other types, such as: mold thickness heterogeneity, the mould that namely thickness difference is larger, can be extended by nozzle equally, the thick end of mould is made to strengthen cooling, thus reach more consistent with thin end cooling rate, thus reduce distortion and cracking risk, improve the heat treatment performance of material.For various types of mould, regulate the distance of die face and nozzle face between 450 ~ 600mm by prolonging nozzle, mold integral can be controlled and cool even situation and cooling velocity.
According to above experiment and production practices, can say and thoroughly solve the slow and cooling uniformity problem of all die & mold treatment quenching Local cooling, heat-treatability can be promoted, and quenching is not easy to crack, this will be a qualitative leap in die & mold treatment industry, will produce very far-reaching influence to the life-span extending mould.
Claims (2)
1. a vacuum drying oven cooling nozzle, comprise: vacuum furnace, nozzle, extended jet nozzle, thermocouple, deep-small hole die casting, number row nozzle is provided with in described vacuum furnace, often arrange nozzle to distribute with decile in vacuum furnace, it is characterized in that described nozzle installs extended jet nozzle additional, the length of extended jet nozzle is set to 50 ~ 250mm according to the depth of deep-small hole die casting profile, the end face of extended jet nozzle and the distance of mould cavity surface are 450 ~ 600mm, charging tray is provided with in vacuum furnace, deep-small hole die casting to be placed on charging tray and to be in vacuum furnace center, several thermocouple is placed on the surface of deep-small hole die casting.
2. vacuum drying oven cooling nozzle according to claim 1, it is characterized in that described extended jet nozzle processes its profile by graphite type material is cylinder, inside is provided with circular hole, the inside first half section of extended jet nozzle is round table-like, extended jet nozzle is sleeved on jet hole, the wall at the rear portion of extended jet nozzle is provided with the screwed hole of several fixing extended jet nozzle, and extended jet nozzle is fixed on nozzle through screwed hole by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420496760.1U CN204075135U (en) | 2014-08-29 | 2014-08-29 | Vacuum drying oven cooling nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420496760.1U CN204075135U (en) | 2014-08-29 | 2014-08-29 | Vacuum drying oven cooling nozzle |
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| Publication Number | Publication Date |
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| CN204075135U true CN204075135U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420496760.1U Active CN204075135U (en) | 2014-08-29 | 2014-08-29 | Vacuum drying oven cooling nozzle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105364045A (en) * | 2014-08-29 | 2016-03-02 | 一胜百模具技术（上海）有限公司 | Nozzles for vacuum furnace cooling |
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2014
- 2014-08-29 CN CN201420496760.1U patent/CN204075135U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105364045A (en) * | 2014-08-29 | 2016-03-02 | 一胜百模具技术（上海）有限公司 | Nozzles for vacuum furnace cooling |
| WO2016029713A1 (en) * | 2014-08-29 | 2016-03-03 | 一胜百模具技术（上海）有限公司 | Nozzle for cooling vacuum furnace |
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