CN1904535A - Heat diffusion treatment equipment capable of precision temperature control and having long service life - Google Patents
Heat diffusion treatment equipment capable of precision temperature control and having long service life Download PDFInfo
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- CN1904535A CN1904535A CN 200610019786 CN200610019786A CN1904535A CN 1904535 A CN1904535 A CN 1904535A CN 200610019786 CN200610019786 CN 200610019786 CN 200610019786 A CN200610019786 A CN 200610019786A CN 1904535 A CN1904535 A CN 1904535A
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Abstract
The invention is a kind of thermal diffusion treating equipment. It can control temperature precisely and has long service life. It includes a heat treating stove, a crucible and a thermocouple. The heat treating stove adopts the couple thermocouple controlling temperature well external-heat crucible thermal diffusion treating stove. It includes a well external-heat crucible TD salt bath cladding stove (11) and a well warming-up backfire stove. The couple thermocouple and the controlling tank (16) are connected. One is the temperature controlling thermocouple used to measure the temperature of the outer surface of the crucible. It inserts into the hearth through the flank of the well heating camp stove. The other is the center thermocouple used to measure the salt bath temperature in the crucible. It inserts into the salt bath in the crucible through the stove cover (1).The invention can control temperature precisely and treat big and small workpieces. The service life is long and the application is wide. It adapts to popularize and apply.
Description
Technical field
The present invention relates to the use apparatus field of heat diffusion treatment (TD processing), the heat diffusion treatment equipment of particularly a kind of accurate temperature controlling and long service life.
Background technology
Though TD handles to have been promoted abroad and uses, but in China owing to there are some technological difficulties: the aging and activation as salt bath, workpiece deformation, salt bath furnace is with problems such as metal material and equipment, make this advanced technologies have certain difficult point in actual applications, up to the present, also be in the laboratory development stage basically.And the equipment that uses in the laboratory generally adopts the external-heat crucible furnace, and there is following problem in this equipment:
(1) traditional crucible furnace does not install the side thermocouple additional, only depends on the center thermocouple temperature measurement, and salt temperature and fire box temperature that it records differ greatly, and cause electric furnace heating wire to blow, and crucible burns, and melts salt temperature inequality;
(2) the crucible material is 1Cr18Ni9Ti, and long-term use easily is corroded;
(3) thermocouple seriously corroded promptly can eating thrown behind 3,4 stoves, scrap.
For this reason, we have carried out the improvement to treatment facility.
Summary of the invention
Technical problem to be solved by this invention is: provide the heat diffusion treatment equipment of a kind of accurate temperature controlling and long service life, to overcome the deficiency that existing equipment exists.
The technical scheme that the present invention solves its technical problem employing is: adopt the outer hot crucible heat diffusion treatment stove of well formula of double-thermocouple temperature control, it comprises the outer hot crucible TD salt bath coating stove of a well formula and a well formula preheating-tempering furnace; Double-thermocouple links to each other with switch board, wherein one is the temperature-control heat couple of measuring the crucible peripheral temperature, insert in the burner hearth its side by pit furnace, and another root is a center thermocouple of measuring salt temperature in the crucible, and it is by in the salt bath in the bell insertion crucible.
Advantage of the present invention is that temperature control is accurate, and service life of equipment is long, and applied range, can realize the processing of large and small workpiece, is suitable for applying.
Description of drawings
Fig. 1 is the structural representation of the outer hot crucible TD salt bath coating stove 11 of well formula of the present invention.
Fig. 2 is the vertical view of the outer hot crucible TD salt bath coating stove 11 of well formula.
Fig. 3 is the body of heater of the outer hot crucible TD salt bath coating stove 11 of well formula and the layout connection diagram of switch board 16.
The specific embodiment
Heat diffusion treatment equipment provided by the invention, its structure is as depicted in figs. 1 and 2: the outer hot crucible heat diffusion treatment stove of well formula that adopts the double-thermocouple temperature control, it comprises the outer hot crucible TD salt bath coating stove 11 of a well formula (being called for short TD salt bath coating stove) and a well formula preheating-tempering furnace, but the crucible 8 of a plurality of different size sizes of TD salt bath coating stove adapted is suitable for various large and small processing.Double-thermocouple links to each other with switch board 16, wherein one is the temperature-control heat couple 7 of measuring the crucible peripheral temperature, it is in the side insertion burner hearth of TD salt bath coating stove by pit furnace, and it mainly acts on is to measure the interior temperature of burner hearth and control the actual temperature of stove by maximum temperature is set; Another root is a center thermocouple 9 of measuring salt temperature in the crucible, and it inserts in the interior salt bath of crucible by bell 1, and the temperature of the salt bath that obtains like this can be more accurate, also can not corrode thermocouple.Two thermocouple signals can accurately be controlled temperature and programming rate by AI instrument associating temperature control, can avoid blowing electric furnace heating wire again.
Crucible 8 can be cast long service life by the heat-proof corrosion-resistant metal material of suitable proportioning nickel and chromium; Its main component and percentage composition are: Fe is 10～30, and Cr is 10～30, and Ni is 40～80.
TD salt bath coating stove can adopt RJ
2The well formula resistance furnace of series, its technical parameter is: rated power is 30～50KW, and maximum operating temperature is 1200 ℃, and size suggestion in operating room's is Φ (600～300) * 500.The crucible 8 of the multiple model of TD salt bath coating stove adapted can be made multiple TD and handle.The bottom of crucible 8 can be fixed on the bottom surface of burner hearth 3 inner chambers by support 5, and below, the edge on the top of crucible 8 is provided with retainer plate 2.Sequence number 4 is a furnace enclosure, and burner hearth 3 adopts energy-saving refractory material to build by laying bricks or stones and forms, and heat-insulating material has all been filled up in the gap of burner hearth that refractory material is built and shell.Heating element heater 6 is installed in putting on the brick of burner hearth 3, and this element can be selected resistant to elevated temperatures resistance wire for use.
Preheating-tempering furnace can adopt the shaft furnace of RJ2 series, and its technical parameter is: rated power is 15～30KW, and maximum operating temperature is 650 ℃.
Usually new stove all will carry out baker, to remove moisture content in the stove, improves insulating properties, and make the furnace lining mortar joint sintering of laying bricks, strengthen furnace lining structure intensity, the furnace lining behind baker, the refractory material generation cracking that causes because of heating up rapidly in the process also capable of reducing using damages the phenomenon of furnace lining.
This treatment facility can adopt the switch board of KRJ-60 or other model to carry out temperature control.The figure adjustment system is adopted in the input of this switch board, and built-in thermocouple commonly used and thermal resistance gamma correction form are measured precise and stablely, can reach ± 2 ℃ deviation.In order to cooperate the use of TD salt bath coating stove and tempering furnace, corresponding to the switch board of TD salt bath coating stove and tempering furnace, their AI instrument separately must be imported, export specification and functional requirement before use parameter correctly is set to it.
When this treatment facility was installed, TD salt bath coating stove can be arranged voluntarily according to the workshop concrete condition.The layout annexation of TD salt bath coating stove and switch board 16 is as shown in Figure 3: TD salt bath coating stove links to each other with the output interface of switch board 16 by power line 12, tripper wiring 13, center thermocouple wiring 14, temperature-control heat couple wiring 15.But the pipeline line still must keep the wiring position of appointment when position changed.The deployment tube period of the day from 11 p.m. to 1 a.m should should be greater than 7～8 times of caliber with the bending radius of minimum.Tube end should be in the place that is above the ground level 200mm when pipe was imbedded ground, and screwed and shut with nut.
This treatment facility need carry out the intensification of certain hour (for example 1.2 hours) to empty stove when working beginning at every turn, can remove moisture in the stove like this, improves insulating properties.After intensification finishes, to fill to handle with the workshop crane gear and send into burner hearth with the crucible of basic salt and begin to heat, but in order to guarantee to use the safe handling of equipment, need take interim the intensification during work, as 200 ℃-400 ℃-600 ℃, the rest may be inferred up to handling the temperature that needs, and can avoid resistance wire impaired like this, and can make furnace temperature even.In the course of the work, temperature-control heat couple is measured the gained temperature data and is input to the electric cabinet of control, when temperature during near design temperature, the controllable silicon components and parts of controlling in the electric cabinet are started working, adjust the output of electric current, the size of current of output begins to reduce, when temperature reaches design temperature, electric furnace is stopped power supply, but because the inertia that temperature rises, temperature-control heat couple and center thermocouple begin to descend, when temperature drops to uniform temperature because the inertia temperature that heats up continues to rise then, electric furnace begins output current again, from the pointer of ammeter as can be seen, pointer is intermittent swing, is not stable always output maximum current, but in the size of adjusting electric current according to the temperature that measures, so periodic output current and stop output current, temperature slowly is stabilized to design temperature, can realize that long-time insulation carries out TD and handle this moment.
Because the salt bath that TD handles, when particularly adopting the borax salt bath, corrosivity is very big, facts have proved, general anchor clamps are behind two stoves, and it is disconnected promptly to be corroded in its salt bath surface, and crucible has been used about eight stoves, penetration phenomenon promptly occurs, for this reason, need to select preferable corrosion resistant material, make crucible and anchor clamps.Practice shows, in borax bath, nickel improves corrosion resistance bigger contribution, just can obtain high-temperature corrosion-resistance performance preferably but must combine with the Cr element, when Ni content is 40～80%, Cr content is 10～30% o'clock comparatively ideals, therefore having adopted the main component by own founding is Fe-(10～30) %, the material of Cr-(10～30) % and Ni-(40～80) % is made, and, under the condition less than operating room's size, crucible can be designed to the size of a series of different sizes according to the needs of producer, handles with the TD that realizes different big smallclothes.When crucible size during much smaller than operating room's size, can adopt and in burner hearth, add refractory brick, the crucible pad is put, and, crucible is stabilized at circular retainer plate 2 of burner hearth end face design.When carrying out the TD processing, do not contact, designed a work rest and fixed workpiece, have with a certain distance from the crucible bottom to guarantee workpiece with the crucible bottom in order to guarantee workpiece.Work rest can be welded with stainless steel material.
Claims (5)
1. the heat diffusion treatment equipment of accurate temperature controlling and long service life, be provided with heat-treatment furnace, crucible and thermocouple, it is characterized in that heat-treatment furnace adopts the outer hot crucible heat diffusion treatment stove of well formula of double-thermocouple temperature control, it comprises the outer hot crucible TD salt bath coating stove (11) of a well formula and a well formula preheating-tempering furnace; Double-thermocouple links to each other with switch board (16), wherein one is the temperature-control heat couple (7) of measuring the crucible peripheral temperature, in its side insertion burner hearth by pit furnace, another root is a center thermocouple (9) of measuring salt temperature in the crucible, and it inserts in the interior salt bath of crucible by bell (1).
2. heat diffusion treatment equipment according to claim 1 is characterized in that described crucible (8) cast by the heat-proof corrosion-resistant metal material, and its main component and percentage composition are: Fe is 10～30, and Cr is 10～30, and Ni is 40～80.
3. heat diffusion treatment equipment according to claim 1 is characterized in that: the outer hot crucible TD salt bath coating stove (11) of well formula is RJ
2The well formula resistance furnace of series, its rated power is 30～50KW, maximum operating temperature is 1200 ℃.
4. heat diffusion treatment equipment according to claim 1 is characterized in that: preheating-tempering furnace adopts RJ
2The shaft furnace of series, its rated power is 15～30KW, maximum operating temperature is 650 ℃.
5. heat diffusion treatment equipment according to claim 1 is characterized in that: the switch board model is KRJ-60.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100197867A CN100478637C (en) | 2006-08-01 | 2006-08-01 | Heat diffusion treatment equipment capable of precision temperature control and having long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100197867A CN100478637C (en) | 2006-08-01 | 2006-08-01 | Heat diffusion treatment equipment capable of precision temperature control and having long service life |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1904535A true CN1904535A (en) | 2007-01-31 |
| CN100478637C CN100478637C (en) | 2009-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100197867A Expired - Fee Related CN100478637C (en) | 2006-08-01 | 2006-08-01 | Heat diffusion treatment equipment capable of precision temperature control and having long service life |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767946A (en) * | 2011-05-04 | 2012-11-07 | 上海浔兴拉链制造有限公司 | Zinc furnace |
| CN105333725A (en) * | 2014-08-11 | 2016-02-17 | 王金青 | Well resistance aging furnace |
| CN107475777A (en) * | 2017-07-14 | 2017-12-15 | 中国科学院上海光学精密机械研究所 | High-accuracy oil bath annealing furnace for KDP crystalloids |
| CN109827444A (en) * | 2019-01-23 | 2019-05-31 | 深圳市能佳自动化设备有限公司 | A kind of control method, device and the computer readable storage medium of Multi-layer warming furnace |
| CN112725725A (en) * | 2020-12-07 | 2021-04-30 | 江苏省镔鑫钢铁集团有限公司 | Deformed steel bar thermal diffusion treatment method and treatment equipment |
-
2006
- 2006-08-01 CN CNB2006100197867A patent/CN100478637C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767946A (en) * | 2011-05-04 | 2012-11-07 | 上海浔兴拉链制造有限公司 | Zinc furnace |
| CN105333725A (en) * | 2014-08-11 | 2016-02-17 | 王金青 | Well resistance aging furnace |
| CN107475777A (en) * | 2017-07-14 | 2017-12-15 | 中国科学院上海光学精密机械研究所 | High-accuracy oil bath annealing furnace for KDP crystalloids |
| CN109827444A (en) * | 2019-01-23 | 2019-05-31 | 深圳市能佳自动化设备有限公司 | A kind of control method, device and the computer readable storage medium of Multi-layer warming furnace |
| CN112725725A (en) * | 2020-12-07 | 2021-04-30 | 江苏省镔鑫钢铁集团有限公司 | Deformed steel bar thermal diffusion treatment method and treatment equipment |
| CN112725725B (en) * | 2020-12-07 | 2021-12-24 | 江苏省镔鑫钢铁集团有限公司 | Deformed steel bar thermal diffusion treatment method and treatment equipment |
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| Publication number | Publication date |
|---|---|
| CN100478637C (en) | 2009-04-15 |
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Granted publication date: 20090415 Termination date: 20110801 |