CN202963706U - Dip-brazing furnace with preset temperature gradient - Google Patents
Dip-brazing furnace with preset temperature gradient Download PDFInfo
- Publication number
- CN202963706U CN202963706U CN 201220658512 CN201220658512U CN202963706U CN 202963706 U CN202963706 U CN 202963706U CN 201220658512 CN201220658512 CN 201220658512 CN 201220658512 U CN201220658512 U CN 201220658512U CN 202963706 U CN202963706 U CN 202963706U
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- graphite crucible
- dip
- temperature
- furnace
- brazing
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Abstract
The utility model discloses a dip-brazing furnace with a preset temperature gradient. The dip-brazing furnace comprises a furnace body and a thermal insulation layer, wherein a furnace lining is paved in the furnace body; the thermal insulation layer is arranged on the inner side wall of a graphite crucible in the furnace body; an annular partition plate, which is horizontally arranged in the graphite crucible, is used for dividing the inner cavity of the graphite crucible into a plurality of chambers which are relatively independently; a plurality of heating bodies, corresponding to the position of each chamber, are arranged in the furnace lining from top to bottom, and the power of the heating bodies is reduced from top to bottom in sequence; and a temperature monitoring device is arranged in the inner cavity of the graphite crucible. A temperature adjusting cooling device is arranged on the lower part of the furnace body, and the temperature adjusting cooling device is a cooling water tube which is arranged in the thermal-insulation layer of the graphite crucible in an annular manner. The temperature monitoring device is a thermocouple with a temperature measuring element extending to each chamber respectively. The dip-braking furnace with the temperature gradient disclosed by the utility model has the advantages that the structure is simple and the problems such as more air holes, low braking rate, unstable product quality, large energy consumption and the like of a welding piece during the dip-brazing process are well solved. Moreover, the air holes are effectively removed, the brazing rate is improved and the welding quality of the welding piece is ensured.
Description
Technical field
The utility model relates to the dip brazing stove, especially relates to a kind of dip brazing stove of preset temperature gradient.
Background technology
Dip brazing is that the local or whole of weldment immersed the solder of melting or mix in salt bath, conducts by the heat of liquid medium workpiece is heated to a kind of technology that brazing temperature realizes soldering.The dip brazing firing rate is fast, homogeneous heating, and production efficiency is high, and the distortion of weldment is little, and grain growth and decarburization phenomenon are not remarkable, and can protect weldment not oxidated, and in brazing process, temperature control accurate (± 5
oC), be easy to realize mechanization, very extensive in industrial application.But, in traditional dip brazing technique, soldering oven needs laser heating, and the temperature field in stove be in the middle of high surface low, in the process that weldment takes out, the solder on weldment top first solidifies, in brazed seam, the eliminating path of gaseous impurity is closed, and gas is difficult for discharging, and forms the defectives such as pore, cause the defectives such as the brazed seam density is poor, ratio of brazing area is low, unstable product quality.For complex-shaped weldment, gas is discharged more difficult, and product quality can't guarantee.In order to improve brazing quality, the method that generally adopts is to extend the immersion time, has increased energy resource consumption and environmental pollution.
Summary of the invention
The purpose of this utility model is to provide a kind of can improve ratio of brazing area, guarantees the dip brazing stove of the preset temperature gradient of constant product quality.
For achieving the above object, the utility model can be taked following technical proposals:
The dip brazing stove of preset temperature gradient described in the utility model comprises the body of heater that is equipped with furnace lining, is placed on the graphite crucible madial wall in body of heater and is provided with heat-insulation layer; The toroidal membrane that is horizontally set in described graphite crucible is divided into a plurality of relatively independent chambers with the graphite crucible inner chamber, corresponding with each chamber location in described furnace lining be provided with a plurality of calandrias from top to bottom, the power of described calandria reduces from top to bottom successively; Be provided with device for detecting temperature in described graphite crucible inner chamber.
The bottom of described body of heater is provided with the temperature adjustment cooling device, and described temperature adjustment cooling device is placed in the interior cooling water pipe of graphite crucible heat-insulation layer for ring.
Described device for detecting temperature is that temperature element extends into respectively the thermocouple in each chamber.
The utility model has the advantage of simple in structurely, the pore that when well having solved dip brazing, weldment exists is many, ratio of brazing area is low, unstable product quality and the problem such as energy consumption is large.The different calandria of power is set in the top and the bottom of body of heater, make and form the thermograde that the surface is high, the centre is low in molten solder/fused salt, make that the weldment upper temp that immerses in it is high, temperature of lower is low, when weldment slowly shifts out, solder in brazed seam is realized consecutive solidification, thereby promotes the filling of gas discharge and solder, has effectively eliminated pore, improve ratio of brazing area, guaranteed the welding quality of weldment.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
As shown in the figure, the dip brazing stove of preset temperature gradient described in the utility model comprises the body of heater 2 that is equipped with furnace lining 1, is placed on graphite crucible 3 madial walls in body of heater 2 and is provided with heat-insulation layer 4; Be horizontally set on the toroidal membrane in graphite crucible
5The graphite crucible inner chamber is divided into upper and lower two relatively independent chambers, correspondingly with the up and down chamber location in furnace lining 1 is provided with two calandrias 6, the power of top calandria is greater than the bottom calandria; Higher than lower chamber, be provided with temperature adjustment cooling device in the bottom of body of heater for the temperature that guarantees the molten solder/fused salt in upper chamber, this temperature adjustment cooling device can be placed in cooling water pipe 7 in graphite crucible heat-insulation layer 4 for ring; Temperature for liquid solder/fused salt in accurate upper and lower two relatively independent chambers of monitoring is provided with device for detecting temperature in the graphite crucible inner chamber, this device for detecting temperature can extend into respectively thermocouple in each chamber for temperature element 8.
During soldering, the top and the bottom that utilize the calandria of different capacity to heat respectively graphite crucible 3, make the molten solder/fused salt of different parts have different temperature, regulate the temperature of bottom molten solder/fused salt by pass into cold water in cooling water pipe 7, guarantee that the temperature of top molten solder/fused salt is higher than the bottom, namely form thermograde from bottom to top in molten solder/fused salt, and monitor with device for detecting temperature.Can set different thermogrades according to different technological requirements, satisfy the soldering requirement of different weldments.Then, weldment 9 is immersed from the endoporus of toroidal membrane 5, after placing certain hour, weldment 9 each positions are identical with the molten solder/salt-mixture of contact, also formation temperature gradient, then weldment 9 is slowly shifted out, the temperature of the solder on weldment 9 tops is higher than the temperature of bottom solder, the solder of bottom first solidifies, so form top-down consecutive solidification in brazed seam, the gas in brazed seam is discharged in process of setting, thereby has eliminated the gas hole defect in the brazed seam, improve ratio of brazing area, guaranteed quality and the stability thereof of product.
Claims (4)
1. the dip brazing stove of a preset temperature gradient, comprise the body of heater (2) that is equipped with furnace lining (1), is placed on graphite crucible (3) madial wall in body of heater (2) and is provided with heat-insulation layer (4); It is characterized in that: the toroidal membrane (5) that is horizontally set in described graphite crucible is divided into a plurality of relatively independent chambers with the graphite crucible inner chamber, corresponding with each chamber location a plurality of calandrias (6) that are provided with from top to bottom in described furnace lining (1), the power of described calandria (6) reduces from top to bottom successively; Be provided with device for detecting temperature in described graphite crucible inner chamber.
2. the dip brazing stove of preset temperature gradient according to claim 1, it is characterized in that: the bottom of described body of heater is provided with the temperature adjustment cooling device.
3. the dip brazing stove of preset temperature gradient according to claim 2 is characterized in that: described temperature adjustment cooling device is placed in cooling water pipe (7) in graphite crucible heat-insulation layer (4) for ring.
4. the dip brazing stove of preset temperature gradient according to claim 1, it is characterized in that: described device for detecting temperature is that temperature element (8) extends into respectively the thermocouple in each chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220658512 CN202963706U (en) | 2012-12-04 | 2012-12-04 | Dip-brazing furnace with preset temperature gradient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220658512 CN202963706U (en) | 2012-12-04 | 2012-12-04 | Dip-brazing furnace with preset temperature gradient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202963706U true CN202963706U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220658512 Expired - Fee Related CN202963706U (en) | 2012-12-04 | 2012-12-04 | Dip-brazing furnace with preset temperature gradient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202963706U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008813A (en) * | 2012-12-04 | 2013-04-03 | 郑州机械研究所 | Dip brazing method with a preset temperature gradient and special brazing furnace |
| CN106141468A (en) * | 2015-04-01 | 2016-11-23 | 徐林波 | Leaching casting melting welding connection and goods thereof |
-
2012
- 2012-12-04 CN CN 201220658512 patent/CN202963706U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008813A (en) * | 2012-12-04 | 2013-04-03 | 郑州机械研究所 | Dip brazing method with a preset temperature gradient and special brazing furnace |
| CN103008813B (en) * | 2012-12-04 | 2014-12-31 | 郑州机械研究所 | Dip brazing method with a preset temperature gradient |
| CN106141468A (en) * | 2015-04-01 | 2016-11-23 | 徐林波 | Leaching casting melting welding connection and goods thereof |
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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 |
Granted publication date: 20130605 Termination date: 20161204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |