CN205332784U - Outer hot type vacuum heating furnace furnace temperature uniformity degree device - Google Patents
Outer hot type vacuum heating furnace furnace temperature uniformity degree device Download PDFInfo
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- CN205332784U CN205332784U CN201520926395.8U CN201520926395U CN205332784U CN 205332784 U CN205332784 U CN 205332784U CN 201520926395 U CN201520926395 U CN 201520926395U CN 205332784 U CN205332784 U CN 205332784U
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Abstract
The utility model relates to an outer hot type vacuum heating furnace furnace temperature uniformity degree device, include bell or furnace gate, reflection of radiation screen, bell or furnace gate bottom is fixed with multilayer reflection of radiation screen, and the interval of the interval between bell or furnace gate bottom and the first layer reflection of radiation screen and each layer reflection of radiation between shielding is the same, and is a definite value, the equipartition distributes on the reflection of radiation screen has six outer hole for the layering in to furnace heat radiation reflect back in the furnace. The utility model discloses an installation furnace temperature uniformity degree device has improved the interior temperature field of former furnace body effectively on the bell, improves the interior heating temperature degree of consistency of furnace body and makes more than the regional expansion one time of the interior effective temperature of original furnace body, especially to having bright prospects under the condition that the heating temperature degree of consistency was had relatively high expectations in the furnace body. The utility model is not only simple in structure, processing low cost, the equipment is simple moreover, and the change of furnace temperature gradient is showing, thereby improves the product charge capacity and improve production efficiency.
Description
Technical field
This utility model relates to a kind of adjustment furnace temp field device, especially a kind of external-heat vacuum furnace furnace temperature decision device。
Background technology
In product manufacturing, part heat treatment often carries out。For relatively more accurate and require that the part commonly used vacuum furnace heating now not allowing oxidation in heat treatment process is implemented, and whether the temperature field of stove is desirable, whether the furnace uniformity is good and whether regional extent is big has become the key improving product quality, improving production efficiency。
In the production of the existing product precision component of company, a small-sized external-heat well vacuum heating furnace (size of burner hearth ￠ 200 × 500) is used to carry out heat treatment (structure is Fig. 1 such as), have found that bell place is the sealing ensureing vacuum hearth, bell place adopt O RunddichtringO seal, and O RunddichtringO must flow through again bell pass to cooling water-cooled guarantee normal use。Temperature field in the low temperature very disruptive at bell place burner hearth, destroy the uniformity of in-furnace temperature, when after material heat treatment, performance requirement is stricter, the uniformity of in-furnace temperature is just far from meeting requirement, often only having the 30% of furnace depth to use, its production efficiency is not high and product quality homogeneity is necessarily poor。
Must seek to change temperature field in furnace for realistic problem, expand the uniformity scope of in-furnace temperature。
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of external-heat vacuum furnace furnace temperature decision device, this device can make the gradient in the temperature field of in-furnace temperature significantly be diminished by big gradient under vacuum, so that furnace temperature decision increases substantially, and the effective coverage of the furnace temperature definite value of required control is made to expand at double。
In order to solve above-mentioned technical problem, this utility model have employed following technical scheme:
A kind of external-heat vacuum furnace furnace temperature decision device, including bell or fire door, radiation reflective screen, multilamellar radiation reflective screen it is fixed with bottom described bell or fire door, and identical with the spacing between ground floor radiation reflective screen and the spacing between each layer radiation reflective screen bottom bell or fire door, and it is certain value；On described radiation reflective screen, uniform distribution has six exit orifice, for layering, heat radiation reflective in burner hearth is melted down in thorax。
Described ground floor radiation reflective screen is connected by bolt and the fixing nut being welded on bell or fire door bottom surface are fixing with bell or fire door, is mutually permanently connected by fixing bolt and fixing nut between adjacent radiation reflective screen。
The external diameter ￠ D of described radiation reflective screen is slightly less than burner hearth internal diameter, on radiation reflective screen on the circumference of ￠ D1 the uniform hole having 6 ￠ d of six deciles, be connected with each other bottom adjacent radiation reflective screen or fixing bell or fire door for fixing bolt。
The beneficial effects of the utility model: this utility model by installing furnace temperature decision device on bell, effectively improve the temperature field in former body of heater, improve in body of heater the heating-up temperature uniformity and make effective temperature region in original body of heater expand more than one times, when higher, there are bright prospects especially for heating-up temperature uniformity requirements in body of heater。
Adopting external-heat vacuum furnace of the present utility model to improve furnace temperature decision device, be not only simple in structure, low processing cost, and assemble simple, in-furnace temperature gradient changes notable, improves product useful load thus improving production efficiency。
This utility model solves to change temperature field in furnace, makes to produce between the effective district of former furnace temperature and bell the little thermograde excursion of a wide region, thus the problem expanding the homogeneous zones scope of in-furnace temperature。There is provided a kind of can under the premise substantially not changing former furnace construction, on former fire door (or bell), only increase raising furnace temperature decision device, solve the not high problem too little with effective temperature region in body of heater of the heating-up temperature uniformity in body of heater, external-heat vacuum furnace that is now widely available and that manufacture is had wide market prospect, the raising adopting external-heat vacuum furnace to carry out heat treated product quality is had considerable economic benefit。
Accompanying drawing explanation
Fig. 1 is well formula External heated vacuum furnace schematic diagram；
Fig. 2 is the bell equipped with furnace temperature decision device；
Fig. 3 is furnace temperature decision device of the present utility model；
Fig. 4 is the radiation reflective screen on furnace temperature decision device of the present utility model；
Fig. 5 is the well formula External heated vacuum furnace schematic diagram installing furnace temperature decision device additional；
Fig. 6 is the horizontal External heated vacuum furnace schematic diagram installing furnace temperature decision device additional。
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described further。
As shown in Figures 1 to 6, a kind of external-heat vacuum furnace furnace temperature decision device, including bell or fire door 1, furnace temperature decision device 3。Furnace temperature decision device 3 is made up of radiation reflective screen 304 and securing member。
It is fixed with multilamellar radiation reflective screen 304 by securing member bottom bell or fire door 1, and bottom bell or fire door, spacing L1 between spacing and each layer radiation reflective screen 304 between 1 with ground floor radiation reflective screen 304 is identical, and be certain value。On radiation reflective screen 304, uniform distribution has six exit orifice d, for layering, heat radiation reflective in burner hearth is melted down in thorax。
As it is shown on figure 3, furnace temperature decision device 3 of the present utility model, including fixing nut 1, bolt 302, fixing nut 2 303, radiation reflective screen 304。Fixing nut 1 is by being fixedly welded on bell or the bottom of fire door 1, bolt 302 is for keeping determining deviation to be fixed on bottom bell or fire door 1 a piece of radiation reflective screen 304 of the bottom against bell or fire door 1, and respectively each radiation reflective screen 304 is combined fixing, fixing nut 2 303 is screwed on fixing bolt 302, interfixing adjacent radiation reflective screen 304 at fixing bolt 2 303 and guarantee adjacent radiation radiation shield determining deviation, the spacing L1 of radiation reflective screen 304 is determined by fixing nut 2 303 adjustment。On radiation reflective screen 304, uniform distribution has 6 exit orifice d, and heat radiation reflective in burner hearth is melted down in thorax by layering。
Bottom bell or fire door 1, on the circumference of ￠ D1, trisection (120 DEG C of distributions) is uniform is welded and fixed nut 1。Connect and three uniform fixing bolts 302 of a piece of radiation reflective screen 304 bottom bell or fire door 1 are provided with two fixing nuts 2 303, radiation shield is fixed tightly on fixing bolt 302 by one of them nut, another nut is also tight with fixing nut 1 on bolt, and guarantees that radiation shield is L1 with bell or fire door 1 bottom space。
Bolt 302 installed by a piece of radiation reflective screen 304 bottom bell or fire door 1, and another sheet radiation reflective screen 304 is fixed for connection in another group hole remaining。Installation guaranteeing, radiation shield spacing is L1。New installation radiation reflective screen 304 another group hole remaining that connects is used for connecting fixing new a piece of radiation reflective screen 304, guarantees that radiation reflective screen 304 spacing is L1 in installation。Radiation reflective screen 304 is installed and is completed remaining radiation reflective screen 304 according to said method, guarantees that radiation reflective screen 304 spacing is L1 in installation。
As shown in Figure 4, the circular radiation radiation shield 304 of furnace temperature decision device of the present utility model, its external diameter ￠ D is slightly less than bell or the external diameter of fire door 1, radiation reflective screen 304 6 decile uniform processing ￠ d hole, aperture is closed by bolt 302 diameter compatible and is determined, reliable for reducing heat transfer and bonding strength between radiation shield, chooses M5 ~ M8 bolt, every radiation reflective screen 304 is separated by the circumference of ￠ D1 three Kong Weiyi groups of 120 DEG C, remaining for another group。
As shown in Figure 6, of the present utility model the external-heat horizontal vacuum furnace that furnace temperature decision device is equally applicable to is installed additional。
Claims (3)
1. an external-heat vacuum furnace furnace temperature decision device, including bell or fire door (1), radiation reflective screen (304), it is characterized in that: described bell or fire door (1) bottom are fixed with multilamellar radiation reflective screen (304), and bell or fire door (1) bottom identical with the spacing between ground floor radiation reflective screen (304) and the spacing between each layer radiation reflective screen (304), and be certain value；The upper uniform distribution of described radiation reflective screen (304) has six exit orifice, for layering, heat radiation reflective in burner hearth is melted down in thorax。
2. external-heat vacuum furnace furnace temperature decision device according to claim 1, it is characterized in that: described ground floor radiation reflective screen (304) is by bolt (302) and is welded on that the fixing nut of bell or fire door (1) bottom surface is fixing with bell or fire door (1) to be connected, be mutually permanently connected by fixing bolt (302) and fixing nut between adjacent radiation reflective screen (304)。
3. external-heat vacuum furnace furnace temperature decision device according to claim 1, it is characterized in that: the external diameter ￠ D of described radiation reflective screen (304) is slightly less than burner hearth internal diameter, on radiation reflective screen (304) on the circumference of ￠ D1 the six uniform holes having 6 ￠ d of decile, be used for fixing bolt (302) and be connected with each other adjacent radiation reflective screen (304) or fixing bell or fire door (1) bottom。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520926395.8U CN205332784U (en) | 2015-11-19 | 2015-11-19 | Outer hot type vacuum heating furnace furnace temperature uniformity degree device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520926395.8U CN205332784U (en) | 2015-11-19 | 2015-11-19 | Outer hot type vacuum heating furnace furnace temperature uniformity degree device |
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| Publication Number | Publication Date |
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| CN205332784U true CN205332784U (en) | 2016-06-22 |
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| CN201520926395.8U Active CN205332784U (en) | 2015-11-19 | 2015-11-19 | Outer hot type vacuum heating furnace furnace temperature uniformity degree device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300096A (en) * | 2015-11-19 | 2016-02-03 | 上海衡拓液压控制技术有限公司 | Furnace temperature uniformity device of external heating type vacuum heating furnace |
| CN110530156A (en) * | 2019-09-19 | 2019-12-03 | 苏州拓升智能装备有限公司 | A kind of heat reflector means and tube type vacuum heating equipment |
-
2015
- 2015-11-19 CN CN201520926395.8U patent/CN205332784U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300096A (en) * | 2015-11-19 | 2016-02-03 | 上海衡拓液压控制技术有限公司 | Furnace temperature uniformity device of external heating type vacuum heating furnace |
| CN110530156A (en) * | 2019-09-19 | 2019-12-03 | 苏州拓升智能装备有限公司 | A kind of heat reflector means and tube type vacuum heating equipment |
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