CN203846079U - Pit furnace for thermal treatment of annular forge pieces - Google Patents
Pit furnace for thermal treatment of annular forge pieces Download PDFInfo
- Publication number
- CN203846079U CN203846079U CN201420138038.0U CN201420138038U CN203846079U CN 203846079 U CN203846079 U CN 203846079U CN 201420138038 U CN201420138038 U CN 201420138038U CN 203846079 U CN203846079 U CN 203846079U
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- China
- Prior art keywords
- furnace
- bell
- auxiliary
- nichrome wire
- thermal treatment
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Abstract
The utility model discloses a pit furnace for thermal treatment of annular forge pieces. The pit furnace comprises a vertical furnace body, wherein a furnace cover is arranged at the top of the furnace body, main heating wires are distributed on the inner wall of the furnace body, an insulating rod extends on the lower surface of the furnace cover along the axis of the furnace body, auxiliary heating wires are wound on the surface of the insulating rod, and the main heating wires and the auxiliary heating wires are respectively and electrically connected with a power supply outside the furnace body and a power supply on the upper surface of the furnace cover. According to the pit furnace, the insulating rod is additionally arranged in the furnace body, auxiliary heating wires are arranged on the outer wall of the insulating rod, so that the temperature of the furnace core is improved, the temperatures of the furnace core and the furnace wall are the same, and the heat utilization rate is improved; the insulating rod or the auxiliary heating wires is/are not the obstacle for putting forge pieces into the pit furnace or taking out of the pit furnace, so that the pit furnace has the advantages of multiple purposes and strong flexibility.
Description
Technical field
The utility model relates to a kind of annular forging piece thermal treatment pit furnace, belongs to thermal treatment machinery apparatus field.
Background technology
Pit furnace is a kind of as equipment for Heating Processing, is suitable for the thermal treatment of the forging of circular outline.But during with this traditional pit furnace thermal treatment large-sized annular forging, the space that the stove heart is huge is easily cut off by forging, easily causes the intracardiac temperature of stove and furnace wall temperature to differ, reduce heat treatment efficiency.Prior art once proposed to set up some pegs that are horizontally placed on body of heater inside in the interior wall of body of heater, and peg is provided with some hanging heating units.But the peg that this sets up and heating unit cause picking and placeing forging difficulty toward pit furnace.While picking and placeing, forging is vulnerable to the obstruction of heating unit and the peg of suspension; And for heavy froging, comprise large-sized annular forging, toward picking and placeing forging in pit furnace, must dismantle peg and heating unit, more difficult.
Utility model content
The purpose of this utility model is to overcome the defect existing in prior art, and the uniform annular forging piece thermal treatment of temperature pit furnace in a kind of stove is provided.
For achieving the above object, the technical solution of the utility model is a kind of annular forging piece thermal treatment pit furnace, comprises vertical furnace, and the top of body of heater is provided with bell; On inboard wall of furnace body, be distributed with main nichrome wire; The lower surface of bell is provided with insulation rod along the Axis Extension of body of heater, and the surface coil of insulation rod has auxiliary nichrome wire; Main nichrome wire and auxiliary nichrome wire are electrically connected to respectively the power supply that is positioned at body of heater outside and the power supply that is positioned at bell upper surface.
Preferably, described insulation rod surface is provided with the parallel screw type groove of multiple tracks, and groove number is the twice of described auxiliary nichrome wire number, and wherein adjacent twice groove is one group, and one end of the close described bottom of furnace body of groove in groups is connected; Arbitrary described auxiliary resistance wire be embedded in one group described in groove, and the two ends of auxiliary resistance wire stretch out from one end of the close described bell of described groove, are electrically connected to the power supply of described bell upper surface.
Preferably, described auxiliary nichrome wire is at least two, and is set in parallel in insulation rod surface; After described auxiliary nichrome wire parallel connection with described in be positioned at bell upper surface power supply connect.
Preferably, described insulation rod is open tube.
Preferably, described insulation rod is detachable connection with described bell; Circuit two ends after described auxiliary nichrome wire parallel connection are electrically connected to plug, described in be positioned at described bell upper surface both ends of power be electrically connected to edge connector, plug is detachable connection with edge connector.
Preferably, described bell is penetrated with thermopair, and thermopair is between described body of heater and described insulation rod.
Advantage of the present utility model and beneficial effect are: this annular forging piece thermal treatment with pit furnace by set up an insulation rod in body of heater, outer wall at insulation rod arranges additional heated filament, improved the temperature of the stove heart, make more homogeneous of stove heart temperature and furnace wall temperature, and dwindled furnace inner space, improved heat utilization efficiency.Because insulation rod and auxiliary nichrome wire move with bell, toward this pit furnace, pick and place forging identical with conventional pit furnace, can not be subject to the obstruction of insulation rod or auxiliary nichrome wire.Through replacing bell, or insulation rod and auxiliary nichrome wire on dismounting bell, this pit furnace can also be for conventional forging as the thermal treatment of cylinder forging etc. etc., have advantages of that multi-use, handiness are strong.
Accompanying drawing explanation
Fig. 1 is the structural representation of pit furnace for the thermal treatment of the utility model annular forging piece;
Fig. 2 is the structural representation of insulation rod in Fig. 1;
Fig. 3 is the local enlarged diagram at A place in Fig. 2;
Fig. 4 is the structural representation of putting into the pit furnace after annular forging piece.
In figure: 1, body of heater; 2, bell; 3, main nichrome wire; 4, insulation rod; 5, auxiliary nichrome wire; 6, the first power supply; 7, second source; 8, thermopair; 9, annular forging piece.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples are only for the technical solution of the utility model is more clearly described, and can not limit protection domain of the present utility model with this.
The utility model is a kind of annular forging piece thermal treatment pit furnace, as shown in Figure 1, comprises vertical furnace 1, and the top of body of heater 1 is provided with bell 2; On inboard wall of furnace body, be distributed with main nichrome wire 3; The lower surface of bell 2 is provided with insulation rod 4 along the Axis Extension of body of heater 1, and the surface coil of insulation rod 4 has auxiliary nichrome wire 5; Main nichrome wire 3 is electrically connected to the first power supply 6 that is positioned at body of heater 1 outside, and auxiliary nichrome wire 5 is electrically connected to the second source 7 that is positioned at bell 2 upper surfaces.Bell 2 is penetrated with thermopair 8, and thermopair 8 is between body of heater 1 and insulation rod 4.During use, first in vertical furnace 1, put into annular forging piece 9, then cover bell 2, as shown in Figure 4.
Insulation rod 4 surfaces are provided with the parallel screw type groove 41 of multiple tracks, groove 41 numbers are the twice of auxiliary nichrome wire 5 numbers, wherein adjacent twice groove 41,42 is one group, and one end of close body of heater 1 bottom of groove 41,42 in groups is connected, as shown in Figure 2 and Figure 3; Each auxiliary resistance wire 5 is embedded in one group of groove 41,42, and the two ends of auxiliary resistance wire 5 stretch out from one end of the close bell 2 of groove 41,42, is electrically connected to the second source 7 of bell 2 upper surfaces.The object that groove is set is to isolate each auxiliary nichrome wire 5, avoids being short-circuited.Auxiliary nichrome wire 5 adopts this mounting means to be both convenient to being electrically connected to of auxiliary nichrome wire 5 and second source 7, can make again the effectively surface of covering insulation rod 4 of auxiliary nichrome wire 5.
Auxiliary nichrome wire 5 is at least two, and parallel to each other on insulation rod 4 surfaces; After auxiliary nichrome wire 5 is in parallel, connect with second source 7.A plurality of auxiliary nichrome wire 5 are set, avoid rare short or open circuit auxiliary nichrome wire 5 was all lost efficacy.
Preferably insulation rod 4 is detachable connection with bell 2; Circuit two ends after auxiliary nichrome wire 5 parallel connections are electrically connected to plug, and second source 7 two ends are electrically connected to edge connector, and plug is detachable connection with edge connector.
In addition, insulation rod 4 is preferably open tube, thereby can reduce the load-bearing requirement to body of heater 1.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. an annular forging piece thermal treatment pit furnace, is characterized in that, comprises vertical furnace, and the top of body of heater is provided with bell; On inboard wall of furnace body, be distributed with main nichrome wire; The lower surface of bell is provided with insulation rod along the Axis Extension of body of heater, and the surface coil of insulation rod has auxiliary nichrome wire; Main nichrome wire and auxiliary nichrome wire are electrically connected to respectively the power supply that is positioned at body of heater outside and the power supply that is positioned at bell upper surface.
2. annular forging piece thermal treatment pit furnace as claimed in claim 1, it is characterized in that, described insulation rod surface is provided with the parallel screw type groove of multiple tracks, groove number is the twice of described auxiliary nichrome wire number, wherein adjacent twice groove is one group, and one end of the close described bottom of furnace body of groove in groups is connected; Arbitrary described auxiliary resistance wire be embedded in one group described in groove, and the two ends of auxiliary resistance wire stretch out from one end of the close described bell of described groove, are electrically connected to the power supply of described bell upper surface.
3. annular forging piece thermal treatment pit furnace as claimed in claim 2, is characterized in that, described auxiliary nichrome wire is at least two, and is set in parallel in insulation rod surface; After described auxiliary nichrome wire parallel connection with described in be positioned at bell upper surface power supply connect.
4. the annular forging piece thermal treatment pit furnace as described in claims 1 to 3 any one, is characterized in that, described insulation rod is open tube.
5. annular forging piece thermal treatment pit furnace as claimed in claim 4, is characterized in that, described insulation rod is detachable connection with described bell; Circuit two ends after described auxiliary nichrome wire parallel connection are electrically connected to plug, described in be positioned at described bell upper surface both ends of power be electrically connected to edge connector, plug is detachable connection with edge connector.
6. annular forging piece thermal treatment pit furnace as claimed in claim 5, is characterized in that, described bell is penetrated with thermopair, and thermopair is between described body of heater and described insulation rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420138038.0U CN203846079U (en) | 2014-03-25 | 2014-03-25 | Pit furnace for thermal treatment of annular forge pieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420138038.0U CN203846079U (en) | 2014-03-25 | 2014-03-25 | Pit furnace for thermal treatment of annular forge pieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203846079U true CN203846079U (en) | 2014-09-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420138038.0U Expired - Fee Related CN203846079U (en) | 2014-03-25 | 2014-03-25 | Pit furnace for thermal treatment of annular forge pieces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203846079U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105925765A (en) * | 2016-07-07 | 2016-09-07 | 安庆市庆华精工机械有限责任公司 | Heat treatment device for high-temperature-resistant bearing |
| CN105950841A (en) * | 2016-07-07 | 2016-09-21 | 安庆市庆华精工机械有限责任公司 | Novel heat treatment device for chromium alloy steel |
-
2014
- 2014-03-25 CN CN201420138038.0U patent/CN203846079U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105925765A (en) * | 2016-07-07 | 2016-09-07 | 安庆市庆华精工机械有限责任公司 | Heat treatment device for high-temperature-resistant bearing |
| CN105950841A (en) * | 2016-07-07 | 2016-09-21 | 安庆市庆华精工机械有限责任公司 | Novel heat treatment device for chromium alloy steel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20210325 |