CN102231922A - Far-infrared radiation heater - Google Patents
Far-infrared radiation heater Download PDFInfo
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- CN102231922A CN102231922A CN2011101530270A CN201110153027A CN102231922A CN 102231922 A CN102231922 A CN 102231922A CN 2011101530270 A CN2011101530270 A CN 2011101530270A CN 201110153027 A CN201110153027 A CN 201110153027A CN 102231922 A CN102231922 A CN 102231922A
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- infrared radiation
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- radiation heater
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Abstract
The invention relates to a far-infrared radiation heater, which comprises far-infrared radiation source and a far-infrared radiation reflector. The far-infrared radiation source is a quartz heating tube and a nickel-chromium heating wire is arranged in the quartz heating tube. A far-infrared radiation reflector coating is coated on an inner wall of the quartz heating tube. The far-infrared radiation heater is characterized in that the far-infrared radiation reflector coating comprises the following components: 28 to 45wt% of ZnO; 22 to 36wt% of ZrO2; 12 to 32wt% of MgO and the balance SiO2. A far-infrared radiation heater provided in the invention has advantages of long service life and high infrared radiation efficiency and is especially suitable for drying painting and coating.
Description
Technical field
The present invention relates to a kind of infrared radiation heater, particularly, the present invention relates to a kind of far-infrared radiation heater.
Background technology
After coating is covered in matrix surface, is transformed into process that compact and complete solid films by liquid or the pressed powder state of sleeping soundly and is called coating or film dry or solidifies.
The coating drying is one of key link of japanning construction, has only after continuous coated that final formation solidifies its various functions of coating competence exertion.Have only and select correct drying mode and technology, just can obtain desirable expection coating, finish the whole technological requirement of coating application.The coating drying process is except the effect that influences coating application, because it is the process of a power consumption height, length consuming time, thereby the efficient and the economy of coating application is also had significant impact.
The dry run of coating generally is to be become solid-stately by liquid state, and viscosity increases gradually, and performance reaches the process that regulation requires gradually.Change procedure experience dry tack free, partial desiccation, bone dry three phases.
(1) dry tack free: be that the flowable state of clump of filming is dried to touch with finger and is not stained with lacquer on the time finger of filming but the stickness of feeling to film, leaves stage of finger trace on filming.
(2) partial desiccation is the drying regime that can not stay fingerprint during with light finger extrusion film, is a kind of drying regime of semihard.
(3) bone dry is to suppress to film with finger also not stay fingerprint, films with the finger friction and does not also stay the drying regime of scar, film this moment energy resistance to compression, anti-polishing.But the standard of the different bone dries of filming often also has specific requirement, and the method for standard is that the mechanical properties such as hardness that test is filmed are judged the drying or the state of cure of filming.
Actual conditions during according to drying can be divided into air dry, heat drying and three kinds of situations of special drying.The infrared radiation drying is one of heat drying mode of using always.
As everyone knows, infrared radiation can be divided into three wave bands by its radiation wavelength, and its wavelength of near infrared band is 750nm-2500nm, and the radiant body temperature is 2000-2200 ℃, and thermal element start-up time is 1-2 second, and radiation source is bright look; Its wavelength of middle-infrared band is 2500nm-4000nm, and the radiant body temperature is 800-900 ℃, and thermal element start-up time is 60-90 second, and radiation source is kermesinus; Its wavelength of far infrared band is 4-50um, 400-600 ℃ of radiant body temperature, and thermal element start-up time is 15 minutes, it is dark-coloured that radiation source is.Be applied in industrial infrared radiation heater, to the different workpiece that is heated, its heating and absorption infrared radiation wavelength have nothing in common with each other, so must and absorbing required wavelength with the workpiece heating, the wavelength that infrared radiation heater provides mates mutually, just can get a desired effect, its performance index comprise energy-saving effect, heat up and cooling fast, infrared radiation heater useful life etc.
The employed material of high emissivity infrared radiator of various countries' development mostly is ceramic material.According to the vibration symmetry principle, the symmetry during particle vibration is low more, and the variation of dipole moment is just big more, and its infrared radiation is just strong more.The symmetry of molecular structure malleable molecule in vibration processes of forming owing to the ceramic material polyatom changes dipole moment.Therefore, many ceramic materials all have higher emissivity.Ceramic material also has acid and alkali-resistance, premium properties such as anticorrosive, anti-oxidant, high temperature resistant.So the infrared radiation ceramic material more and more is subject to people's attention.
60～seventies of 20th century, the U.S., Japan etc. are to SiC, Fe
2O
3Carried out theoretical research Deng compound monocrystal material with good radiation characteristic; Because the at high temperature easily oxidized and feasible infrared emittance in use of SiC reduces; the Enecoat infrared radiation coating product that Britain HethertBeven company and Europe, Australia's joint operation are released; SiC and chemical addition agent are mixed; after presintering; additive can form silicon dioxide protective film at silicon carbide; can effectively prevent the high-temperature oxydation of carborundum, prolong its useful life.But the emissivity of homogenous material constantly changes with wavelength, and the emission of object also all presents certain selectivity with absorption.Be chosen in the filler that different-waveband has high emissivity respectively and carry out compoundization, make coating in different temperature and wave-length coverage, high emissivity be arranged.
Though all materials all have the ultrared ability that absorbs, every kind of material is the infrared wavelength range of easy absorption and inequality.The infrared ray absorbing sensitizing range that general coating is filmed is at the far infrared band of 4-10um, so best to the red dried effect of filming with the far-infrared radiation mode of heating.
Summary of the invention
The object of the present invention is to provide a kind of far-infrared radiation heater, and it has the advantages that the life-span is long, infrared radiation efficient is high, be particularly suitable for being used for drying is carried out in japanning and coating.
To achieve these goals, the present invention is achieved through the following technical solutions:
A kind of far-infrared radiation heater comprises far-infrared radiation source, far infrared radiation reflector; Wherein far-infrared radiation source is a quartz heating-pipe, is provided with the nickel chromium triangle heater strip in it, and the quartz heating-pipe inwall is coated with the far infrared radiation reflector coatings; It is characterized in that described far infrared radiation coating comprises following component: ZnO:28-45wt%; ZrO
2: 22-36wt%; The SiO of MgO:12-32wt% and surplus
2
Preferably, wherein the content of ZnO is 32-42wt%.
Preferably, ZrO wherein
2Content be 25-32wt%.
Preferably, wherein the content of MgO is 15-28wt%.
Preferably, the composition of described far infrared radiation coating and content are respectively: ZnO:32wt%; ZrO
2: 25wt%; The SiO of MgO:15wt% and surplus
2
Preferably, the composition of described far infrared radiation coating and content are respectively: ZnO:42wt%; ZrO
2: 32wt%; The SiO of MgO:15wt% and surplus
2
Preferably, the thickness of described far infrared radiation coating is between 5um-30um, for example between the 10um-20um.
Wherein, described far infrared radiation coating can deposit by technology known in the art, for example, sputtering method such as magnetron sputtering, spraying process such as electric arc spraying, vapour deposition method such as electron beam evaporation plating method, chemical vapour deposition (CVD) such as plasma enhanced chemical vapor deposition etc.
The coating that preferably, can prepare said components and content by methods such as coating brushing, sprayings.Preferredly prepare above-mentioned coating by spraying method.
Preferably, described spraying comprises: methods such as flame-spraying, electric arc spraying, plasma spraying, laser spraying or cold spraying.Preferred the application can adopt flame spray powder coating or electric arc spraying.
Adopt hot-spraying technique to prepare coating, heat spraying method directly melts dusty material, directly clash into the coating that matrix surface forms high adhesion with high speed kinetic energy, it is chimeric mutually by melting the grain distortion to be coated with interlayer, strength of coating and bond strength all are much better than the coating with the preparation of coating brushing method, can reach 20 years general useful life, and can keep very high infrared radiation property for a long time.
The radiance of the far infrared radiation coating of the application's preparation adopts the IRE-2 infrared radiation tester of Shanghai Institute of Technical Physics of Chinese Academy of Sciences development, according to the method for GB7287.9-87 regulation, between 500 its infrared emittances of degree test are up to 90-95%.
Adhesion test shows to coating and matrix (carborundum), the far infrared radiation coating's adhesion that adopts the preparation of electric arc spraying or plasma spraying method is up to 25-35MPa, because infrared radiating coating generally is not a stress surface during work, so this bond strength can satisfy the situation of real work fully.
In addition, the applicant also tests the thermal shock resistance of coating, the infrared radiating coating of preparation was heated 120 hours under the high temperature of 600 degree, the visual inspection coating surface does not have significant change, and also show by the infrared emittance test, emissivity has reduced less than 2%, demonstrates this coating and still have excellent infrared radiation property under harsh hot conditions.
Far-infrared radiation heater with prior art is compared, and the present invention has the following advantages:
(1) wavelength of far-infrared radiation heater of the present invention mainly concentrates in the scope of 4.5-10um, with the infrared-sensitive district basically identical that is coated with paint film, thereby is particularly suitable for being coated with the drying of paint material.
(2) mainly adopt the high metal oxide ceramic material of infrared reflectivity as the reflector, reflectivity is up to more than 90%, overcome in the prior art metal material as the easy oxidation in reflector, the low shortcoming of reflectivity.
(3) far infrared radiation coating ability 600 degree high temperature of the present invention test for a long time, and not obviously decline of performance (working temperature generally is lower than 500 degree).
Specific embodiment
Below will make further instructions the present invention by specific embodiment.
Embodiment 1
A kind of far-infrared radiation heater comprises far-infrared radiation source, far infrared radiation reflector; Wherein far-infrared radiation source is a quartz heating-pipe, is provided with the nickel chromium triangle heater strip in it, and the quartz heating-pipe inwall is coated with the far infrared radiation reflector coatings; It is characterized in that described far infrared radiation coating comprises following component: ZnO:32wt%; ZrO
2: 25wt%; The SiO of MgO:15wt% and surplus
2The thickness of coating is 10mm, adopts the arc spray process preparation.The reflectivity of 500 degree is 92%.
Embodiment 2
A kind of far-infrared radiation heater comprises far-infrared radiation source, far infrared radiation reflector; Wherein far-infrared radiation source is a quartz heating-pipe, is provided with the nickel chromium triangle heater strip in it, and the quartz heating-pipe inwall is coated with the far infrared radiation reflector coatings; It is characterized in that described far infrared radiation coating comprises following component ZnO:42wt%; ZrO
2: 32wt%; The SiO of MgO:15wt% and surplus
2The thickness of coating is 20mm, adopts the plasma spraying method preparation.The reflectivity of 500 degree is 95%.
Use infrared radiation lamp of the present invention and can be used for the coating curing stove.Show by curing contrast experiment, compare that save the about 50-75% of electric power, shortened more than 30% curing time with the common quartz lamp mode of being heating and curing to automobile brake disc organosilicon zinc-rich coating.
The above only is preferred embodiment of the present invention, and is all within the claimed technical scheme scope of the application's claim, and any modification of being done and/or be equal to is replaced and/or improvement etc., all should be included within protection scope of the present invention.The application's protection range is as the criterion with the technical scheme of claim and the technical scheme that is equal to thereof, and is not subjected to specification to specifically describe the restriction of part.
Claims (5)
1. a far-infrared radiation heater comprises far-infrared radiation source, far infrared radiation reflector; Wherein far-infrared radiation source is a quartz heating-pipe, is provided with the nickel chromium triangle heater strip in it, and the quartz heating-pipe inwall is coated with the far infrared radiation reflector coatings; It is characterized in that described far infrared radiation coating comprises following component: ZnO:28-45wt%; ZrO
2: 22-36wt%; The SiO of MgO:12-32wt% and surplus
2
2. the described far-infrared radiation heater of claim 1, the content that it is characterized in that described ZnO is 32-42wt%.
3. the described far-infrared radiation heater of claim 1 is characterized in that described ZrO
2Content be 25-32wt%.
4. the described far-infrared radiation heater of claim 1, the content that it is characterized in that described MgO is 15-28wt%.
5. each described far-infrared radiation heater of claim 1-4 is used it in the curing or drying equipment that is coated with paint material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101530270A CN102231922A (en) | 2011-06-09 | 2011-06-09 | Far-infrared radiation heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101530270A CN102231922A (en) | 2011-06-09 | 2011-06-09 | Far-infrared radiation heater |
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| Publication Number | Publication Date |
|---|---|
| CN102231922A true CN102231922A (en) | 2011-11-02 |
Family
ID=44844444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101530270A Pending CN102231922A (en) | 2011-06-09 | 2011-06-09 | Far-infrared radiation heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102231922A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104540255A (en) * | 2014-12-03 | 2015-04-22 | 昆山微容电子企业有限公司 | Tin melting apparatus of capacitor production line |
| CN109121235A (en) * | 2017-06-23 | 2019-01-01 | 阿克伟斯卢讯韩国有限公司 | Utilize the manufacturing method and manufacture system of the electric heater of planar heating substance |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1066488A (en) * | 1991-05-07 | 1992-11-25 | 刘希圣 | Far infrared material and automobile energy-saving device |
| CN2235179Y (en) * | 1995-07-27 | 1996-09-11 | 罗会炳 | Directional strong radiation far-infrared heater |
-
2011
- 2011-06-09 CN CN2011101530270A patent/CN102231922A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1066488A (en) * | 1991-05-07 | 1992-11-25 | 刘希圣 | Far infrared material and automobile energy-saving device |
| CN2235179Y (en) * | 1995-07-27 | 1996-09-11 | 罗会炳 | Directional strong radiation far-infrared heater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104540255A (en) * | 2014-12-03 | 2015-04-22 | 昆山微容电子企业有限公司 | Tin melting apparatus of capacitor production line |
| CN109121235A (en) * | 2017-06-23 | 2019-01-01 | 阿克伟斯卢讯韩国有限公司 | Utilize the manufacturing method and manufacture system of the electric heater of planar heating substance |
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Application publication date: 20111102 |