CN102031360B - Steel belt direct electrical continuous heater of pressure plate electrode - Google Patents
Steel belt direct electrical continuous heater of pressure plate electrode Download PDFInfo
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- CN102031360B CN102031360B CN 201010514999 CN201010514999A CN102031360B CN 102031360 B CN102031360 B CN 102031360B CN 201010514999 CN201010514999 CN 201010514999 CN 201010514999 A CN201010514999 A CN 201010514999A CN 102031360 B CN102031360 B CN 102031360B
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- steel band
- pressing plate
- plate electrode
- heating unit
- continuous heating
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Abstract
The invention provides a steel belt direct electrical continuous heater of a pressure plate electrode, comprising an unreeling wheel, a reeling wheel and a steel belt arranged between the unreeling wheel and the reeling wheel, wherein two pressure plate electrifying devices corresponding to the steel belt are arranged between the unreeling wheel and the reeling wheel, an insulation box corresponding to the steel belt is arranged between the two pressure plate electrifying devices, and the two electrifying devices are connected with a secondary electrode of a transformer through copper bars. The invention has the advantages of simple structure, convenience for use and uniform heating temperature, no damage on the steel belt and high heat efficiency of 90-50 percent.
Description
Technical field
The present invention relates to steel band thermal treatment field, be specifically related to a kind of continuous heating unit of the direct energising of steel band of pressing plate electrode.
Background technology
Energy-saving and emission-reduction are long-range strategy policies of national economic development, concerning an enterprise, energy-conservationly can reduce product cost, thereby can improve competitiveness of product.Steel band thermal treatment will consume great amount of heat energy, energy-conservationly just seems even more important.Steel band is when heat-treating; All to heat steel band; Generally all heat with the resistance box stove; This device is to be heated to muffle tube and refractory brick on every side thereof about 900 degree through thermal radiation with the high temperature resistance silk of switching on earlier, is heated to the 840-870 degree to the steel band in the muffle tube through thermal radiation again, makes the steel band complete austenitizing.This equipment volume is huge, and area of dissipation is big, and calorific loss is big, adds the heat transfer path complicacy again, and its thermo-efficiency has only about 35-45%.Another shortcoming of this device is that its thermal inertia is very big, and the change of temperature is difficulty very, per hour can only change tens degree. therefore,, not only cause the inaction waste of electric energy but also make operation very inconvenient even stove temporarily need not also must let stove often open.
Also having a kind of steel band heating installation is to adopt high-frequency induction heating, and its thermo-efficiency can reach 50-70%, but its equipment is complicated, and especially the design difficulty of its ruhmkorff coil is big, and the ruhmkorff coil that design a steel band homogeneous heating is very difficult.Main is that steel band just loses magnetism after temperature surpasses Curie temperature, and it is very slow that rate of heating just becomes, and this has just limited promoting the use of of it.
Very early the someone propose to conductor directly switch on the heating imagination, this heating means do not need heat passage, can directly change electric energy into the heat energy of steel band, thereby its thermo-efficiency are very high; The thermal inertia of this device is very little, and stove can use with the opening, and can not cause the inaction loss of electric energy; More, can reach per second hundreds of to several thousand degree because directly the rate of heating of energising heating is very fast.Rate of heating is fast more, and the austenite matrix particle of formation is just more little, makes that the martensite bar body that forms subsequently is also very little, can increase intensity and toughness after the steel band thermal treatment like this, thereby improve the steel band thermal treatment quality.
Though directly ohmic heating technology has this many advantages, generally do not used for a long time.Particularly the continuous heating of steel band never have fine application should technology.Its reason is that the design difficulty of directly energising heating counter electrode is very big, and the especially continuous heating of steel band, the design of electrode are more difficult.The electric current of heating is very big because steel band is directly switched on, and steel band is in constant motion, and makes to relatively move between steel band and electrode, therefore is easy to produce electrical spark, damages steel band.
Technical problem to be solved by this invention is to provide a kind of continuous heating unit of the direct energising of steel band of pressing plate electrode, and simple in structure, easy to use, Heating temperature is even, can not damage steel band, and thermo-efficiency is high.
For solving above-mentioned existing technical problem; The present invention adopts following scheme: a kind of steel band of pressing plate electrode is the continuous heating unit of energising directly; Comprise hai roll wheel, winding wheel, be located at the steel band between hai roll wheel and the winding wheel; Be provided with two pressing plate energising devices corresponding with steel band between said hai roll wheel and the winding wheel, be provided with the insulation can corresponding with steel band between said two pressing plates energising device, said two devices of switching on pass through copper bar and are connected with the transformer secondary output electrode.
As preferably; Said pressing plate energising device comprises insulcrete, is located at upper water box and lower header on the insulcrete; The bottom of said upper water box, the top of lower header are equipped with a pressing plate that is connected with copper bar, and the both sides that are positioned at steel band between said two pressing plates are equipped with a protecting sheet corresponding with steel band.In upper water box and lower header, all be connected with water, pressing plate and protecting sheet are cooled off, casing is made with steel plate, and casing is provided with water-in and water outlet, and guide water board is housed in the casing, makes current cross casing, good cooling results along the path flow of spiraling.
As preferably, said insulcrete is provided with four root posts, and the top of said four root posts is provided with the retaining plate of connection; Be socketed with slide block on said four root posts; Said slide block links to each other with upper water box, and upper water box can be moved up and down, and said retaining plate is provided with compressed air cylinder; It links to each other with upper water box, is used for making upper water box vertically to move up and down.
As preferably, said insulation can comprises shell, inner casing, is located at the insulating cotton layer between shell and the inner casing.High insulating effect.
As preferably, said protecting sheet adopts expanded graphite plate.Expanded graphite plate conducts electricity very well, and soft and flexible, frictional coefficient is very little, and can conduct electricity conducts heat can protect steel band again.
As preferably, said insulation can is provided with infra-red thermometer and protection gas inlet.Infra-red thermometer is used for measuring the temperature of steel band, and it is connected with automatic temperature regulation device, is used for controlling temperature of steel strips automatically at setting range.Feed mouth and be used for feeding protection gas, prevent the steel band oxidation.
Beneficial effect:
The present invention adopts technique scheme that a kind of continuous heating unit of the direct energising of steel band of pressing plate electrode is provided, and it is simple in structure, and is easy to use, and Heating temperature is even, can not damage steel band, and thermo-efficiency can reach 90-95%.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
As shown in Figure 1; A kind of steel band of pressing plate electrode continuous heating unit of directly switching on; Comprise hai roll wheel 1, winding wheel 2, be located at the steel band 3 between hai roll wheel 1 and the winding wheel 2; Be provided with two pressing plates energising devices 4 corresponding with steel band 3 between said hai roll wheel 1 and the winding wheel 2, said two pressing plates are switched on and are provided with the insulation can 5 corresponding with steel band 3 between the device 4, and said two devices 4 of switching on pass through copper bar 6 and are connected with transformer secondary output electrode 7.Said pressing plate energising device 4 comprises insulcrete 41, is located at upper water box 42 and lower header 43 on the insulcrete 41; The top of the bottom of said upper water box 42, lower header 43 is equipped with a pressing plate 44 that is connected with copper bar 6, and the both sides that are positioned at steel band 3 between said two pressing plates 44 are equipped with a protecting sheet 45 corresponding with steel band 3.Said insulcrete 41 is provided with four root posts 46; The top of said four root posts 46 is provided with the retaining plate 47 of connection; Be socketed with slide block 48 on said four root posts 46; Said slide block 48 links to each other with upper water box 42, and said retaining plate 47 is provided with compressed air cylinder 49, and said upper water box 42 links to each other with compressed air cylinder 49.Said insulation can 5 comprises shell 51, inner casing 52, is located at the insulating cotton layer 53 between shell 51 and the inner casing 52.Said protecting sheet 45 adopts expanded graphite plate.Said insulation can 5 is provided with infra-red thermometer 8 and protection gas inlet 9.Simple in structure, easy to use, Heating temperature is even, can not damage steel band, and thermo-efficiency can reach 90-95%.
The effect of upper water box 42 and lower header 43 is cooling pressing plates 44.Pressing plate 44 adopts copper sheet, imports steel band 3 to electric current with it.Protecting sheet 45 adopts expanded graphite plates, conducts electricity very well, and soft and flexible, frictional coefficient is very little, not only has been used for conductive and heat-conductive but also be used for protecting steel band 3.The plastic plate that insulcrete 41 usefulness are thicker is done, and its effect is entire electrode and ground insulation.Insulation can 5 provides a sealed space for steel band 3, can oxidation so that feed the steel band 3 that makes heating behind the protection gas, and played the effect of insulation.The shell 51 of insulation can 5 can adopt ceramic tile, and inner casing 52 adopts stainless steel plate, is filled with insulating cotton layer 53, high insulating effect between shell 51 and the inner casing 52.This device provides power supply by an X-former.The big current low voltage magnetic of its transformer adopting voltage regulator/transformer, primary voltage is 380 volts, secondary voltage is the 9-30 volt.Be in series with a magnetic modulation coil on the iron core of magnetic voltage regulator/transformer, regulate direct current, can regulate the secondary voltage of output easily, thereby realize the automatic control of temperature of steel strips through it.
Claims (5)
1. the steel band of a pressing plate electrode continuous heating unit of directly switching on; Comprise hai roll wheel (1), winding wheel (2), be located at the steel band (3) between hai roll wheel (1) and the winding wheel (2); It is characterized in that: be provided with between said hai roll wheel (1) and the winding wheel (2) two with the corresponding pressing plate of steel band (3) devices (4) of switching on; Be provided with the insulation can (5) corresponding between said two pressing plates energising devices (4) with steel band (3); Said two energising devices (4) are connected with transformer secondary output electrode (7) through copper bar (6); Said pressing plate energising device (4) comprises insulcrete (41), is located at upper water box (42) and lower header (43) on the insulcrete (41); The top of the bottom of said upper water box (42), lower header (43) is equipped with a pressing plate (44) that is connected with copper bar (6), and the both sides that are positioned at steel band (3) between said two pressing plates (44) are equipped with a protecting sheet (45) corresponding with steel band (3), and said pressing plate (44) adopts copper sheet.
2. the steel band of a kind of pressing plate electrode according to claim 1 continuous heating unit of directly switching on; It is characterized in that: said insulcrete (41) is provided with four root posts (46); The top of said four root posts (46) is provided with the retaining plate (47) of connection, is socketed with slide block (48) on said four root posts (46), and said slide block (48) links to each other with upper water box (42); Said retaining plate (47) is provided with compressed air cylinder (49), and said upper water box (42) links to each other with compressed air cylinder (49).
3. the steel band of a kind of pressing plate electrode according to claim 1 continuous heating unit of directly switching on, it is characterized in that: said insulation can (5) comprises shell (51), inner casing (52), is located at the insulating cotton layer (53) between shell (51) and the inner casing (52).
4. the steel band of a kind of pressing plate electrode according to claim 1 continuous heating unit of directly switching on is characterized in that: said protecting sheet (45) adopts expanded graphite plate.
5. the steel band of a kind of pressing plate electrode according to claim 1 continuous heating unit of directly switching on is characterized in that: said insulation can (5) is provided with infra-red thermometer (8) and protection gas inlet (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010514999 CN102031360B (en) | 2010-10-14 | 2010-10-14 | Steel belt direct electrical continuous heater of pressure plate electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010514999 CN102031360B (en) | 2010-10-14 | 2010-10-14 | Steel belt direct electrical continuous heater of pressure plate electrode |
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| Publication Number | Publication Date |
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| CN102031360A CN102031360A (en) | 2011-04-27 |
| CN102031360B true CN102031360B (en) | 2012-08-08 |
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| CN 201010514999 Active CN102031360B (en) | 2010-10-14 | 2010-10-14 | Steel belt direct electrical continuous heater of pressure plate electrode |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104946863A (en) * | 2014-03-24 | 2015-09-30 | 广东兴发铝业有限公司 | Self-electric-heating quenching furnace and self-electric-heating quenching method |
| CN107523679A (en) * | 2017-08-31 | 2017-12-29 | 大连东非特钢制品有限公司 | Heated by electrodes heat treatment method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2420078Y (en) * | 2000-01-17 | 2001-02-21 | 刘远祯 | Automatic control heat exchange acid liquid heater |
| CN2851273Y (en) * | 2005-07-15 | 2006-12-27 | 广州广盛特种钢具有限公司 | Continuous marquenching device for steel strip |
| EP1812608A1 (en) * | 2004-10-29 | 2007-08-01 | Aga Ab | Method and arrangement for heating extended steel products. |
| CN201350702Y (en) * | 2009-01-19 | 2009-11-25 | 三门峡市易兴人造板设备有限公司 | Heating device of continuous flat press type hot pressing machine |
| CN201834951U (en) * | 2010-10-14 | 2011-05-18 | 浙江佰耐钢带有限公司 | Steel belt direct-electrification continuous heating device of pressure plate electrode |
-
2010
- 2010-10-14 CN CN 201010514999 patent/CN102031360B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2420078Y (en) * | 2000-01-17 | 2001-02-21 | 刘远祯 | Automatic control heat exchange acid liquid heater |
| EP1812608A1 (en) * | 2004-10-29 | 2007-08-01 | Aga Ab | Method and arrangement for heating extended steel products. |
| CN2851273Y (en) * | 2005-07-15 | 2006-12-27 | 广州广盛特种钢具有限公司 | Continuous marquenching device for steel strip |
| CN201350702Y (en) * | 2009-01-19 | 2009-11-25 | 三门峡市易兴人造板设备有限公司 | Heating device of continuous flat press type hot pressing machine |
| CN201834951U (en) * | 2010-10-14 | 2011-05-18 | 浙江佰耐钢带有限公司 | Steel belt direct-electrification continuous heating device of pressure plate electrode |
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| CN102031360A (en) | 2011-04-27 |
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Effective date of registration: 20160427 Address after: 322105, 16, Li Dong Road East Li street community, Dongyang City, Zhejiang Province, Jinhua Patentee after: Dongyang Hengye Steel Co. Ltd. Address before: 322105, No. 16 Li Dong Road, Li Jia Industrial Zone, Zhejiang, Dongyang Patentee before: Zhejiang Bainai Steel Belt Co., Ltd. |