CN110499487A - A kind of ammonia nozzle structure for high magnetic induction grain-oriented silicon steel Nitrizing Treatment - Google Patents
A kind of ammonia nozzle structure for high magnetic induction grain-oriented silicon steel Nitrizing Treatment Download PDFInfo
- Publication number
- CN110499487A CN110499487A CN201810468127.4A CN201810468127A CN110499487A CN 110499487 A CN110499487 A CN 110499487A CN 201810468127 A CN201810468127 A CN 201810468127A CN 110499487 A CN110499487 A CN 110499487A
- Authority
- CN
- China
- Prior art keywords
- ammonia
- jet pipe
- fumarole
- steel band
- nozzle structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 261
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 129
- 229910000976 Electrical steel Inorganic materials 0.000 title claims abstract description 17
- 230000006698 induction Effects 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 49
- 239000010959 steel Substances 0.000 claims abstract description 49
- 239000007921 spray Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 9
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 9
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 9
- 238000005121 nitriding Methods 0.000 abstract description 12
- 238000000354 decomposition reaction Methods 0.000 abstract description 4
- 238000010943 off-gassing Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
- C23C8/26—Nitriding of ferrous surfaces
Abstract
The present invention relates to a kind of ammonia nozzle structures for high magnetic induction grain-oriented silicon steel Nitrizing Treatment, the ammonia nozzle structure, including furnace shell, ammonia jet pipe, the ammonia jet pipe can put in and exit furnace shell, the direction of motion that the ammonia jet pipe puts in and exits is vertical with the direction of motion of steel band, the ammonia jet pipe is equipped with several fumaroles, it is characterized by: the direction of motion of the oblique opposite steel band of fumarole, the angle Wei 〆 that the fumarole and the ammonia jet pipe line of centres and vertical line are in, the invention is due to using spray orifice outgassing direction and strip traffic direction in the structure of a clamp angle 〆, the ammonia of ejection and the time of contact of steel band are long, provide the decomposition amount of ammonia, improve the service efficiency and nitriding quality of ammonia.
Description
Technical field
The present invention relates to technical field of metal material heat treatment, more particularly to high magnetic induction grain-oriented silicon steel Nitrizing Treatment technology
A kind of field, and in particular, to ammonia nozzle structure for high magnetic induction grain-oriented silicon steel Nitrizing Treatment.
Technical background
The nitrogen treatment of metal material, which refers to, makes nitrogen-atoms penetrate into workpiece surface in a kind of medium certain at a certain temperature
Chemical heat treatment process.NH3 gas starts to thermally decompose at 570 DEG C as follows: the N that NH3 → (N) Fe+3/2H2 is decomposited,
With and diffuse into steel surface formed Fe2-3N gas nitriding.Before high magnetic induction grain-oriented silicon steel secondary recrystallization, ALN particle is got over
More, finished product magnetic induction intensity is bigger.Nitrogen is added in steel, needs higher hot-rolled temperature, and will cause slab matter
Measure defect.Carrying out Nitrizing Treatment in the cold rolling decarburizing annealing stage can be with the effective solution above problem.
The ammonia nozzle structure of the high magnetic induction grain-oriented silicon steel Nitrizing Treatment of the prior art as shown in figure 2 a andb, heat-treatment furnace
1 two sides of furnace shell be equipped with and can horizontally enter into the ammonia jet pipe of furnace shell, when carrying out Nitrizing Treatment, the steel band of Nitrizing Treatment to be made
Or workpiece vertically moves in furnace shell, Fig. 2A is to be shown as the vertical section of the steel band direction of motion, and the direction of motion of steel band is
Into paper or paper direction is left, is respectively equipped with ammonia jet pipe leaving certain distance above and below steel band.Such as Fig. 2 B
Shown, steel band of the upper and lower ammonia jet pipe into movement vertically sprays ammonia.Furnace gas is unevenly distributed after decomposing because of NH3, is led
It causes to carry out nitriding low efficiency.
In existing nitriding unit, ammonia nitriding is passed through there are two types of modes, first is that ammonia being passed through by furnace shell side wall
Pipe directly sprays to inside burner hearth, and the atmosphere of ammonia is formed in furnace, carries out Nitrizing Treatment to high magnetic induction grain-oriented silicon steel (see Fig. 1).
Another kind is passed through using stainless steel jet pipe, wherein stainless steel jet pipe is spacing 100mm, aperture 3mm, jet angle
Degree is that vertical strip sprays.
It is passed through in mode in the first ammonia, because ammonia is passed through from two sides, causes along burner hearth cross-sectional direction ammonia
Concentration distribution is uneven, eventually leads to high magnetic induction grain-oriented silicon steel nitriding amount along cross-sectional direction and two sides height occurs, centre is low to be showed
As influencing the electromagnetic performance of finished product.
It is passed through in mode in second of ammonia, ammonia is passed through using high temperature resistant stainless steel pipe, advantage is the high temperature at 900 DEG C
Under state, stainless steel tube performance is stablized, and thermal deformation will not occur, be conducive to continuous production.The disadvantage is that the Ni in stainless steel is to promote
The catalyst decomposed into ammonia, during ammonia is passed through, the ammonia in jet pipe is decomposed reaction, generation nitrogen and hydrogen
Gas, the ammonia amount for finally spraying to high magnetic induction grain-oriented silicon steel surface will be reduced, and affect nitrogenizing effect.In addition, because of spray orifice spacing
It is excessive, it causes the ammonia amount for being ejected into belt steel surface to be unevenly distributed, causes nitrogenizing effect poor.
Therefore, market needs to solve the nitridation technique that injection ammonia amount was unevenly distributed, caused nitrogenizing effect difference, the application
It develops after study, has createed a kind of ammonia nozzle structure for high magnetic induction grain-oriented silicon steel Nitrizing Treatment of the invention.
Summary of the invention
It is an object of the invention to disclose a kind of ammonia nozzle structure for high magnetic induction grain-oriented silicon steel Nitrizing Treatment, the knot
Structure is used for high magnetic induction grain-oriented silicon steel Nitrizing Treatment, is evenly distributed and designs to solve ammonia flow, pressure in nitriding process.
The purpose of the present invention is as follows to realize: a kind of ammonia for high magnetic induction grain-oriented silicon steel Nitrizing Treatment
Gas nozzle structure, including furnace shell, ammonia jet pipe, the ammonia jet pipe can put in and exit furnace shell, which puts in and exit
The direction of motion it is vertical with the direction of motion of steel band, the ammonia jet pipe be equipped with several fumaroles, it is characterised in that: jet hole deviation
To the direction of motion of opposite steel band, the angle Wei 〆 that the fumarole and the ammonia jet pipe line of centres and vertical line are in.
Several fumarole orientations are parallel with the axis of air jet pipe.
Spacing between the fumarole is 40mm to 100mm, and the aperture of fumarole is 2mm to 4mm.
The angle Wei 〆 that the fumarole and the ammonia jet pipe line of centres and vertical line are in is 300To 600, optimum angle 450
The vertical range of the ammonia jet pipe and steel band is 200mm-300mm.
The ammonia jet pipe material is silicon carbide, and silicon carbide material has preferable high-temperature stability, ensure that high temperature
Under state, thermal deformation will not occur for jet pipe.Ammonia decomposition catalyst Ni is free of in silicon carbide material, not will lead to ammonia and is being passed through
Accelerated decomposition in the process.
After a kind of ammonia nozzle structure for high magnetic induction grain-oriented silicon steel Nitrizing Treatment of the invention, bring as follows
's
The utility model has the advantages that
1, due to using the structure that spray orifice outgassing direction and strip traffic direction are in a clamp angle 〆, the ammonia of ejection with
The time of contact of steel band is long, provides the decomposition amount of ammonia, improves the service efficiency of ammonia.
2, the structure using spray orifice outgassing direction and strip traffic direction in a clamp angle 〆, the ammonia of ejection are also due to
The contact surface of gas and steel band increases, and more evenly, nitriding is high-quality for contact of the ammonia with steel band.
3, it is also due to the structure using spray orifice outgassing direction with strip traffic direction in a clamp angle 〆, ammonia reaches
The distance of steel strip surface is greater than the vertical distance for reaching steel band, relatively lower speed when ammonia contacts steel strip surface, avoids
Speed when ammonia is ejected into belt steel surface is unsuitable too fast, and influences the uniformity of nitriding.
4, it is also due to the ammonia jet pipe using silicon carbide material, state when ammonia is in jet pipe is more stable, will not
It decomposes in advance reaction, improves the utilization efficiency of ammonia.Construction for a more detailed understanding of the present invention, below with reference to attached
Figure, by specific embodiment, the present invention is described in detail.
Detailed description of the invention
The structural schematic diagram of burner hearth before Fig. 1 Nitrizing Treatment；
Ammonia nozzle structure schematic diagram in Fig. 2A prior art Nitrizing Treatment；
Fig. 2 B shows the side structure schematic diagram of Fig. 2A；
Ammonia nozzle structure schematic diagram in Nitrizing Treatment Fig. 3 A of the invention；
Fig. 3 B shows the side structure schematic diagram of Fig. 3 A；
Fig. 4 is the position view between the fumarole of upper and lower ammonia jet pipe of the invention.In attached drawing:
1-furnace shell；
2-steel bands, A-steel band direction of travel；
3 lower ammonia jet pipes, fumarole 31；
4-upper ammonia jet pipes, fumarole 41；
5-ammonia flows；
The angle of 〆-ammonia flow and vertical line；
H-vertical range of the ammonia jet pipe center from steel band.
Specific embodiment
Ammonia nozzle structure schematic diagram in Nitrizing Treatment Fig. 3 A of the invention；As shown, a kind of take for high magnetic strength
To the ammonia nozzle structure of silicon steel Nitrizing Treatment, including furnace shell 1, ammonia jet pipe 3 and 4, ammonia jet pipe 3 is located at below steel band 2,
Ammonia jet pipe 4 is located at the upper surface of steel band 2, and ammonia jet pipe 3 and 4 is driven by ammonia jet driving device 7 and 6 and controlled, ammonia respectively
Gas blowout tube drive device 7 controls ammonia jet pipe 3 and puts in and exit furnace shell 1, and ammonia jet driving device 6 controls ammonia jet pipe 4 and stretches
Into with exit furnace shell 1, control ammonia jet pipe 3 and 4 put in furnace shell 1 when, ammonia jet driving device 7 and 6 simultaneously to ammonia spray
Conveying has the ammonia of setting pressure in pipe 3 and 4, and gas pressure can be according to the vertical range with steel band 1 in the jet pipe 3 and 4
Size is adjusted.
The ammonia jet pipe 3 and 4 is simultaneously operable, and also be can according to need single ammonia jet pipe 3 or 4 and is worked independently.In
When needing to carry out Nitrizing Treatment to the one side of steel band 2, start one of ammonia jet pipe of ammonia jet pipe 3 and 4；When needing to steel
When all carrying out Nitrizing Treatment with 2 top and bottom, while starting the work of ammonia jet pipe 3 and 4.Ammonia jet pipe 3 and/or 4 can put in and move back
Furnace shell 1 out, the direction of motion which puts in and exit are vertical with the direction of motion of steel band 2.
Fig. 3 B shows the side structure schematic diagram of Fig. 3 A, as shown, the ammonia jet pipe 3 is located at the lower section of steel band 2, the ammonia
Gas blowout pipe 3 is equipped with several fumaroles 31, and the fumarole 31 is oblique upwards against the direction of motion of steel band 2, ammonia jet pipe center
The angle Wei 〆 of ray and vertical line between point and the fumarole 31, penetrating between ammonia jet pipe central point and the fumarole 31
The angle Wei 〆 that line and vertical line are in is 300To 600, optimum angle 450。
The ammonia jet pipe 4 is located at the top of steel band 2, which is equipped with several fumaroles 41, and the fumarole 41 is oblique
To the direction of motion A for being held down against steel band 2, the angle of ray and vertical line between ammonia jet pipe central point and the fumarole 41
Wei 〆, the angle Wei 〆 that ray and vertical line between ammonia jet pipe central point and the fumarole 41 are in is 300To 600, best to press from both sides
Angle is 450。
The fumarole 31 that ammonia jet pipe 3 is arranged in is arranged in a linear, and the direction of straight line is parallel with the axis of air jet pipe 3.Its
Described in each fumarole 31 between spacing be 40mm to 100mm, the aperture of fumarole 31 is 2mm to 4mm.The ammonia
The vertical range of gas blowout pipe 3 and steel band 2 is 200mm-300mm.
The fumarole 41 that ammonia jet pipe 4 is arranged in is arranged in a linear, and the direction of straight line is parallel with the axis of air jet pipe 4.Its
Described in each fumarole 41 between spacing be 40mm to 100mm, the aperture of fumarole 41 is 2mm to 4mm.The ammonia
The vertical range of gas blowout pipe 4 and steel band 2 is 200mm-300mm.
Fig. 4 is the position view between the fumarole of upper and lower ammonia jet pipe of the invention, as shown in figure 4, being located at ammonia
The distance between the fumarole 41 on the both sides on gas blowout pipe 4 is B2；It is located between the fumarole 31 on the both sides on lower ammonia jet pipe 3
Distance be also B2, the width of steel band is B1, and the width of B2 is greater than the width of B1.The width of B1 can be completely covered in the width range of B2
Degree.In a particular embodiment, the wide B1 of steel band is 1000mm, and the distance between fumarole of two sides on ammonia pipe B2 is
1100mm.Ammonia equably covers steel band to be processed, guarantees the consistent of the Nitrizing Treatment quality of whole steel band.
The ammonia jet pipe material is silicon carbide, and silicon carbide material has preferable high-temperature stability, ensure that high temperature
Under state, thermal deformation will not occur for jet pipe.The present invention uses silicon carbide material, both ensure that jet pipe will not occur under the condition of high temperature
Thermal deformation, and can guarantee during being passed through ammonia, the stability of molecule of ammonia will not promote ammonia to decompose, mention
The nitriding efficiency of high ammonia.
It in a further embodiment, is the uniformity for guaranteeing nitrogenizing effect, speed when ammonia is ejected into belt steel surface is not
It is preferably excessive, through testing, in the place apart from nitriding jet pipe 200mm, it is best with 100Pa to spray pressure.So involved in the present invention
Nitriding jet pipe on, spray pitch of holes about 50mm, spray angle and strip operation discovery are on the contrary, about 45 degree of angle, nozzle entry
Place's pressure is 300-500Pa, and the vertical range of spray tube center distance strip is 20cm.
The present apparatus is preferably silicon carbide material, is that one end can be passed through ammonia, the closed pipe assembling structure of the other end.Along spray
Length of tube direction is provided with fumarole, aperture 3mm according to 50mm spacing.Spray orifice edge needs the strip center line of Nitrizing Treatment symmetrical
Arrangement, for nozzle hole number depending on strip width processed, outermost spray orifice spacing is greater than bandwidth 1000mm.Spray orifice goes out when installation
Gas direction and strip traffic direction angle are 45 °, spray the reverse strip traffic direction of gas.
It is the explanation to design of the invention, working principle and most preferred embodiment above, which should not be construed as to this
The limitation of invention claims also belongs to protection model of the invention according to other implementations of present inventive concept
It encloses.
Claims (10)
1. a kind of ammonia nozzle structure for high magnetic induction grain-oriented silicon steel Nitrizing Treatment, including furnace shell, ammonia jet pipe, ammonia spray
Pipe can put in and exit furnace shell, and the direction of motion which puts in and exit is vertical with the direction of motion of steel band, the ammonia
Jet pipe be equipped with several fumaroles, it is characterised in that: the direction of motion of oblique opposite the steel band of fumarole, ammonia jet pipe center and this
The angle Wei 〆 of connection ray and vertical line between fumarole.
2. ammonia nozzle structure according to claim 1, it is characterised in that: between ammonia jet pipe center and the fumarole
The angle Wei 〆 that connection ray and vertical line are in is 300 to 600.
3. ammonia nozzle structure according to claim 4, it is characterised in that: angle Wei 〆 is 450。
4. ammonia nozzle structure according to claim 1, it is characterised in that: several fumaroles are arranged in a linear,
The axis parallel of the straight line and air jet pipe.
5. ammonia nozzle structure according to claim 1, it is characterised in that: the spacing between the fumarole is 40mm
To 100mm, the aperture of fumarole is 2mm to 4mm.
6. ammonia nozzle structure according to claim 5, it is characterised in that: the spacing between the fumarole is
30mm, the aperture of fumarole are 3mm.
7. ammonia nozzle structure according to claim 1, it is characterised in that: the ammonia jet pipe it is vertical with steel band away from
It is 150mm-300mm from H, it is preferable that the vertical range H of the ammonia jet pipe and steel band is 200mm.
8. ammonia nozzle structure according to claim 1, it is characterised in that: the fumarole of the ammonia jet pipe two sides it
Between distance be greater than the width of steel band, the width of steel band is completely covered in the range of fumarole.
9. ammonia nozzle structure according to claim 1, it is characterised in that: the ammonia jet pipe material is silicon carbide.
10. according to ammonia nozzle structure described in 1 to 9 any one of the claims, it is characterised in that: in the top of steel band
Equipped with an ammonia jet pipe, another ammonia jet pipe is equipped in the lower section of steel band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810468127.4A CN110499487A (en) | 2018-05-16 | 2018-05-16 | A kind of ammonia nozzle structure for high magnetic induction grain-oriented silicon steel Nitrizing Treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810468127.4A CN110499487A (en) | 2018-05-16 | 2018-05-16 | A kind of ammonia nozzle structure for high magnetic induction grain-oriented silicon steel Nitrizing Treatment |
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| Publication Number | Publication Date |
|---|---|
| CN110499487A true CN110499487A (en) | 2019-11-26 |
Family
ID=68585118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810468127.4A Pending CN110499487A (en) | 2018-05-16 | 2018-05-16 | A kind of ammonia nozzle structure for high magnetic induction grain-oriented silicon steel Nitrizing Treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116288136A (en) * | 2023-03-23 | 2023-06-23 | 首钢智新迁安电磁材料有限公司 | Nitriding device and nitriding method for oriented silicon steel |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH059704A (en) * | 1991-06-28 | 1993-01-19 | Nkk Corp | Production of high-silicon steel strip by continuous line |
| JP2004217958A (en) * | 2003-01-10 | 2004-08-05 | Nippon Steel Corp | Nitriding method for metallic material |
| JP2007270338A (en) * | 2006-03-31 | 2007-10-18 | Dowa Holdings Co Ltd | Nitriding furnace and nitriding treatment method |
| KR20130055916A (en) * | 2011-11-21 | 2013-05-29 | 주식회사 포스코 | Apparatus for uniform nitriding with decarburizing and nitriding annealing of grain-oriented electrical steel sheet |
| CN203923363U (en) * | 2014-06-18 | 2014-11-05 | 鞍钢集团工程技术有限公司 | Spray beam for a kind of oriented silicon steel nitriding |
| CN205741190U (en) * | 2016-05-18 | 2016-11-30 | 武汉武森轧钢成套技术有限公司 | It is applicable to nitriding furnace air supply system and the nitriding furnace thereof of orientation silicon steel |
| JP2017137547A (en) * | 2016-02-05 | 2017-08-10 | トヨタ自動車株式会社 | Nitriding method |
| CN208485937U (en) * | 2018-05-16 | 2019-02-12 | 武汉尚瑞科技有限公司 | A kind of ammonia nozzle structure for high magnetic induction grain-oriented silicon steel Nitrizing Treatment |
-
2018
- 2018-05-16 CN CN201810468127.4A patent/CN110499487A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH059704A (en) * | 1991-06-28 | 1993-01-19 | Nkk Corp | Production of high-silicon steel strip by continuous line |
| JP2004217958A (en) * | 2003-01-10 | 2004-08-05 | Nippon Steel Corp | Nitriding method for metallic material |
| JP2007270338A (en) * | 2006-03-31 | 2007-10-18 | Dowa Holdings Co Ltd | Nitriding furnace and nitriding treatment method |
| KR20130055916A (en) * | 2011-11-21 | 2013-05-29 | 주식회사 포스코 | Apparatus for uniform nitriding with decarburizing and nitriding annealing of grain-oriented electrical steel sheet |
| CN203923363U (en) * | 2014-06-18 | 2014-11-05 | 鞍钢集团工程技术有限公司 | Spray beam for a kind of oriented silicon steel nitriding |
| JP2017137547A (en) * | 2016-02-05 | 2017-08-10 | トヨタ自動車株式会社 | Nitriding method |
| CN205741190U (en) * | 2016-05-18 | 2016-11-30 | 武汉武森轧钢成套技术有限公司 | It is applicable to nitriding furnace air supply system and the nitriding furnace thereof of orientation silicon steel |
| CN208485937U (en) * | 2018-05-16 | 2019-02-12 | 武汉尚瑞科技有限公司 | A kind of ammonia nozzle structure for high magnetic induction grain-oriented silicon steel Nitrizing Treatment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116288136A (en) * | 2023-03-23 | 2023-06-23 | 首钢智新迁安电磁材料有限公司 | Nitriding device and nitriding method for oriented silicon steel |
| CN116288136B (en) * | 2023-03-23 | 2023-10-20 | 首钢智新迁安电磁材料有限公司 | Nitriding device and nitriding method for oriented silicon steel |
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