CN103066768A - Production craft utilizing semi-processed steel to produce motor rotor and motor stator - Google Patents
Production craft utilizing semi-processed steel to produce motor rotor and motor stator Download PDFInfo
- Publication number
- CN103066768A CN103066768A CN2013100004525A CN201310000452A CN103066768A CN 103066768 A CN103066768 A CN 103066768A CN 2013100004525 A CN2013100004525 A CN 2013100004525A CN 201310000452 A CN201310000452 A CN 201310000452A CN 103066768 A CN103066768 A CN 103066768A
- Authority
- CN
- China
- Prior art keywords
- annealing
- rotor
- cold
- rolling
- stator
- 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.)
- Granted
Links
Abstract
The invention discloses a production craft utilizing semi-processed steel to produce a motor rotor and a motor stator. The production craft utilizing the semi-processed steel to produce the motor rotor and the motor stator mainly solves the technical problems of high energy consumption, severe pollution, high cost and the like in the prior art and comprises procedures such as molten steel smelting, continuous casting, hot rolling, cold rolling, stamping, annealing, splitting, stamping and annealing. Based on quality ratios, namely, C equal to or less than 0.01, P equal to or less than 0.015, S equal to or less than 0.012, Si equal to or less than 0.60 or equal to or more than 0.4, Mn equal to or less than 0.8 or equal to or more than 0.6 and AL equal to or less than 0.25 or equal to or more than 0.15, silicon iron, ferromanganese iron and alloy are added in a rationed mode to undergo alloying and then half-processed cold rolled non-orientation electrical steel comes into being. A cold-rolled plate is produced by undergoing cast steel plate (CSP) continuous casting, hot continuous casting and cold continuous casting, undergoes annealing treatment, flattening and stretching by a flattening set, tension leveling and bundling. Finished products can be obtained by shearing out, continuously stamping and annealing a rotor stamping or a stator stamping, wherein stress can be eliminated by annealing the rotor stamping or the stator stamping. The production craft utilizing the semi-processed steel to produce the motor rotor and the motor stator is mainly applied to motor iron core production.
Description
Technical field
The present invention relates to a kind of production technology of electric machine iron core, the production technology that especially a kind of employing half technique steel is produced rotor and stator core.
Background technology
Cold rolling electric is because its complex manufacturing; with high content of technology; production difficulty is large; investment is large; domestic also only have Wuhan Iron and Steel Plant at present; Baosteel; Anshan iron and steel plant; a few steel mill such as Taiyuan Iron and Steel Co. can produce; it is that traditional handicraft is produced that these producers all adopt the strand of conventional thickness; but the large-scale commercial Application along with continuous casting and rolling (CSP) technique; another brand-new technique has been opened up in production to electrical sheet; practice and " 15 national brainstorm project " initial achievements that external CSP produces electrical sheet all show: adopt the non-oriented electrical steel of the low trade mark in the CSP production to have obvious investment; cost and quality-advantage; enforcement along with National Sustainable Development Strategies; protection of the environment; energy savings; be an important directions of current China development of iron ﹠ steel industry, adopt semi-processed cold-rolled non-oriented electrical steel to replace hot rolling electrical steels and possess energy-conservation significantly; environmental protection and cost advantage.And the production difficulty of silicon steel that adopts full technique is large and impurity is high, and production cost is also very high.
Simultaneously, it also is a very important problem that the surface coating of silicon steel sheet/silicon steel sheet/electrical sheet is processed, and at present, cold rolling non-orientation silicon steel sheet/silicon steel sheet/electrical steel surface coating mainly comprises: organic coating, half inorganic coating, inorganic coating 3 large classes:
Described organic coating is to apply one deck organic coating at the finished product electric steel plate.The silicon steel sheet of China/silicon steel sheet face coat research is started late, and lags behind advanced international standard.The production firm of motor, transformer still adopts organic electrical steel coatings, has affected to a great extent Chinese electromechanical equipment competitiveness in the international market.The progress that develops into the electrical steel surface coating technology of chemical industry provides wide prospect.The China organic coating has experienced early stage pitch sky lacquer 1611#, and then develops into the phenolic paint 9162# of epoxy, and at present, using maximum is that the dimethylbenzene acid modified alcoholic coats with lacquer 9163#.Although it is good to apply the organic coating filming performance that forms behind these organic varnishes, have better punching processability, but also exist many unsurmountable shortcomings, such as: (1) thick coating (10～15 μ m), weldability is poor, iron core overlapping coefficient low (92%).(2) the coating heat-shrinkable is large, and iron core is easily loosening, poor dimensional stability.(3) coating hardness low (generally about 0.9), organic solvent toxicity is large, and price is high, easily causes waste and environmental pollution, affects the healthy of operator.(4) interface resistance reduces gradually with operation, if run into the iron core local overheating, carbonization easily occurs, poor heat resistance.
So-called half inorganic coating is to apply the inorganic insulation coating that one deck contains organic resin at the finished product electric steel plate.We know and use the inorganic insulation coating contain organic resin to provide lubrification for the coating of solidifying, thereby mould has the rate of wear when being reduced in punching silicon steel sheet/silicon steel sheet.Phosphate, chromate inorganic solution can be mixed with the organic resin solution phase.United States Patent (USP) 2793073 has disclosed a kind of insulating coating for silicon-coating steel disc/silicon steel sheet.The organic moiety of coating is by being selected from acrylic resin or copolymer, one or more of anhydrous maleic acid, Pioloform, polyvinyl acetal, amino resins, Lignosite, phenolic resins, vinylacetate, vinyl chloride and epoxy resin.Can add granularity greater than the organic granular material of 2 μ m, for example: phenolic resins, melmacs etc. provide surface irregularity, and obtaining good weldability, the inorganic part of coating can comprise in phosphoric acid class material or the chromic acid class material one or more.Phosphoric acid class material can comprise a kind of phosphate of calcium, magnesium, zinc, and titanium dioxide, glue alms bowl silicon dioxide, aluminium oxide and boric acid.Chromic acid class material can comprise a kind of bichromate of calcium, magnesium, zinc, and titanium dioxide, colloidal alumina and a kind of organic reducing agent.Silicon steel sheet/silicon steel sheet that this usefulness half inorganic coating applies has good punching processability and anti-corrosive properties.But, the resin volatilization can produce too much pore in the welding processing process, the welding pore that produces for the volatilization that makes in this process because of resin is down to minimum, needs add particle in phosphate, the exhausted coating of chromate, but also have powder phenomenon-tion in the punching course of processing.Moreover, because this type coating contains the solubility Cr VI and becomes chromate, thereby, the processing of the coating of coating, coated steel plates, use and the disposal process of useless coating solution in can produce problem aspect the environmental pollution of safety and high price.
Described inorganic coating is to apply the thin insulating material of one deck at the finished product electric steel plate.What use for kind time is: waterglass, talcum, magnesium oxide, borax, phosphate, chromate etc.Wherein inorganic phosphate salt coating is principal item.The inorganic phosphate salt can provide good surface resistivity and thermal endurance for coating.But the film that can liquidate when the punching lamination causes undue wearing and tearing, and is difficult for producing good tack with electric steel plate.United States Patent (USP) 2753203 has been reported a kind of phosphoric acid solution that contains 7%～50% free acid, and the nearly cataloid of 150 mass parts and nearly the chromic anhybride solution of 25 mass parts, this mixed liquor can be used for the electrical sheet surface and form the inorganic insulation coating.
Total development trend is: organic coating is eliminated gradually, and inorganic coating will progressively replace half inorganic coating.But because the conditionality of inorganic coating nature and each side, at present, electrical sheet manufacturer uses more half inorganic coating that remains usually in the world.
Summary of the invention
The purpose of this invention is to provide the production technology that rotor and stator are produced in a kind of energy-saving and environmental protection, processing performance is good, production cost is lower employing half technique steel.
The technical solution adopted for the present invention to solve the technical problems is: it comprises following operation: smelting molten steel, continuous casting, hot rolling, cold rolling, punching, annealing, itemize, punching and annealing specifically comprise: molten iron preliminary treatment → converter smelting and omnidistance Argon → RH be concise → and CSP continuous casting → CSP heating furnace → CSP hot continuous rolling → pickling and cold rolling → annealing → smooth bundling → itemize → punching → annealing; In the converter steelmaking process, C≤0.01 by mass percentage, P≤0.015, S≤0.012,0.4≤Si≤0.60,0.6≤Mn≤0.8,0.15≤AL≤0.25, all the other are the ratio of Fe, and press Si recovery rate 95%, Mn recovery rate 97%, Al recovery rate 35% is metered into ferrosilicon, ferromanganese and aluminium alloy carries out alloying and makes C≤0.01, P≤0.015, S≤0.012,0.4≤Si≤0.60,0.6≤Mn≤0.8,0.15≤AL≤0.25, and all the other are the semi-processed cold-rolled non-oriented electrical steel of Fe; Again behind CSP continuous casting, CSP hot continuous rolling, carry out cold continuous rolling after the pickling and be made into cold-reduced sheet Deng cooling, after adopting annealing furnace to carry out annealing in process to cold-reduced sheet, adopt smooth unit to carry out carrying out the straightening bundling after 2 ~ 10% the smooth extension, coil of strip behind the bundling carries out the itemize cutting at banding machine, and cut by rotor or stator specification requirement and to cut rotor or stator punching, after carrying out continuous punching on the punch press of rotor or stator punching, rotor or stator punching carried out the rotor or the stator punching that get product after stress relief annealing is processed.When adopting the vacuum metling of RH stove, utilize the RH vacuum degasser that C in the molten steel is taken off below the 60ppm, and make the S of molten steel when going out the RH stove less than 100ppm; In described CSP casting process, pulling rate is controlled between 3.0～4.2m/min.
In the described CSP during Hot Strip Rolling, the control heating-up temperature is 1000～1150 ℃, and tapping temperature is 980～1120 ℃, 920～860 ℃ of finish rolling outlet temperatures, and coiling temperature is 620～660 ℃.
The above milling train of 5 passages is set, the accumulation reduction ratio of the reduction ratio of the 1st road milling train F1 〉=50%, the 1 ~ 4 road milling train F1 ~ F4 〉=90%, the reduction ratio of last 1 road milling train≤20% in the described CSP during Hot Strip Rolling.
Described pickling and cold-rolling process comprise: be sent to descaling bath after hot rolling and the cooling, adopting concentration at descaling bath is that the hydrochloric acid (HCl) of 30～150g/L carries out pickling, temperature is controlled at 80～100 ℃ in the acid cleaning process, pickling operating rate 100 ~ 180m/min, carry out the above cold continuous rolling of 3 passages after the pickling, make cold rolling total reduction greater than 75%, the reduction ratio of the 1st road milling train 〉=35% wherein, and the reduction ratio of last 1 road milling train≤10%.In cold continuous rolling process, can adopt roll shifting, roller, protruding roller control and improvement plate shape.
Described cold-reduced sheet annealing process comprises: carry out recrystallization annealing in bell type annealing furnace, annealing temperature is controlled at 650～750 ℃, and temperature retention time is controlled at 8～12 hours.It is to adopt the vacuum nitrogen continuous annealing furnace that described stress relief annealing is processed; under the protective atmosphere of N2 or N2+H2; 700～900 ℃ are carried out full annealing in continuous annealing furnace; slow cooling is to approximately passing into the water vapour processing of turning blue 450 ℃ the time again; make oxide-film that the surface of punching forms one deck densification as dielectric film, then lamination is made into rotor or stator core.
The invention has the beneficial effects as follows: adopt continuous casting and rolling technique of sheet bar to produce the semi-processed cold-rolled non-oriented electrical steel cost of investment and hang down 20～30% than adopting traditional handicraft.Properties of product are stable, and surface quality, strip shape quality, dimensional accuracy are good, can be up to state standards and customer requirement.The product good processability is good.The trade mark such as the experimental production of the present invention is BDGXB-2(50WB800), thickness is the 0.50mm semi-processed cold-rolled non-oriented electrical steel, it is 5.12W/kg that the product electromagnetic performance can reach P1.5/50, magnetic flux density is 1.712T, with present half-technique non oriented electrical steel national standard contrast, iron loss is hanged down 2.88W/kg, the high 0.012T of magnetic flux density.Adopt rotor for electromotor, the stator of the inventive method manufacturing to have good electromagnetic performance and processing performance, rotor for electromotor, the stator made with cold rolling common non-oriented electrical steel relatively have lower processing characteristics, electromagnetic performance, cost, environment-friendly advantage.In sum, the characteristics such as that the present invention has is energy-conservation, reduction of discharging, environmental protection, and also processing performance is good, production cost is lower.It can be widely used in producing in the explained hereafter such as rotor and stator core.
Embodiment
Below in conjunction with embodiment the present invention is described in further details.
Embodiment 1, it comprises following operation the present invention: smelting molten steel, continuous casting, hot rolling, cold rolling, punching, annealing, itemize, punching and annealing specifically comprise: molten iron preliminary treatment → converter smelting and omnidistance Argon → RH be concise → and CSP continuous casting → CSP heating furnace → CSP hot continuous rolling → pickling and cold rolling → annealing → smooth bundling → itemize → punching → annealing; In the converter steelmaking process, C≤0.01 by mass percentage, P≤0.015, S≤0.012,0.4≤Si≤0.60,0.6≤Mn≤0.8,0.15≤AL≤0.25, all the other are the ratio of Fe, and press Si recovery rate 95%, Mn recovery rate 97%, Al recovery rate 35% is metered into ferrosilicon, ferromanganese and aluminium alloy carries out alloying and makes C≤0.01, P≤0.015, S≤0.012,0.4≤Si≤0.60,0.6≤Mn≤0.8,0.15≤AL≤0.25, and all the other are the semi-processed cold-rolled non-oriented electrical steel of Fe; Again behind CSP continuous casting, CSP hot continuous rolling, carry out cold continuous rolling after the pickling and be made into cold-reduced sheet Deng cooling, after adopting annealing furnace to carry out annealing in process to cold-reduced sheet, adopt smooth unit to carry out carrying out the straightening bundling after 2 ~ 10% the smooth extension, coil of strip behind the bundling carries out the itemize cutting at banding machine, and cut by rotor or stator specification requirement and to cut rotor or stator punching, after carrying out continuous punching on the punch press of rotor or stator punching, rotor or stator punching carried out the rotor or the stator punching that get product after stress relief annealing is processed.When adopting the vacuum metling of RH stove, utilize the RH vacuum degasser that C in the molten steel is taken off below the 60ppm, and make the S of molten steel when going out the RH stove less than 100ppm; In described CSP casting process, pulling rate is controlled between 3.0～4.2m/min.
The chemical Composition Control of semi-processed cold-rolled non-oriented electrical steel of the present invention is as shown in the table:
Table 1 Composition Design, W
t%
| The trade mark | C | P | S | Si | Mn | AL |
| BDGXB－2 | ≤0.01 | ≤0.015 | ≤0.012 | 0.4~0.60 | 0.60~0.8 | 0.15~0.25 |
CSP casting and rolling process of the present invention: the core of CSP continuous casting process be the control molten steel from large bag-increasing C and increasing N in bag-crystallizer process, adopts the ultralow C steel crystallizer protecting residue of special middle covering agent and special use.Strand is of a size of 70 * 1000～1275mm, and pulling speed of continuous casting is controlled at about 3.0～4.2m/min.
Hot rolling technology should adopt rational temperature schedule and reduction system.For guaranteeing that the electrical sheet finished product obtains the crystal grain of alligatoring, in the described CSP during Hot Strip Rolling, the control heating-up temperature preferably is controlled at 1000～1150 ℃, and tapping temperature is controlled at 980～1120 ℃, 920～860 ℃ of finish rolling outlet temperatures, and coiling temperature is 620～660 ℃.
The above milling train of 5 passages is set in the described CSP during Hot Strip Rolling, 7 road milling trains preferably are set.The reduction ratio of the accumulation reduction ratio of the reduction ratio of the 1st road milling train F1 〉=50%, the 1 ~ 4 road milling train F1 ~ F4 〉=90%, the 7 road milling train F7≤20%.
System design should solve the problem of belt plate shape control and grain coarsening two aspects simultaneously under the hot rolling, therefore in rolling front 3～4 passages reduction ratio is controlled at the maximum magnitude that equipment allows, milling train F1 reduction ratio 〉=50%, F1 ~ F4 accumulates reduction ratio 〉=90%, the F7 passage adopts little reduction ratio to adjust plate shape and to induce grain coarsening, reduction ratio≤20%.Roll the rear tiny ferrite crystal grain that is deformed into mutually sufficient growing up the time arranged for making, roll rear cooling and should take the back segment refrigerating mode.
Described pickling and cold-rolling process comprise: be sent to descaling bath after hot rolling and the cooling, because of the tiny densification of product surface iron scale, and easily produce strip flaw, therefore should adopt hydrochloric acid to carry out pickling.Adopting concentration at descaling bath is that the hydrochloric acid (HCl) of 30～150g/L carries out pickling, temperature is controlled at 80～100 ℃ in the acid cleaning process, and pickling operating rate 100 ~ 180m/min can guarantee that strip surface quality control is good, cut edge after the pickling, cut behind the limit sheared edge smooth, without burr, non-notch.Carry out the above cold continuous rolling of 3 passages after the pickling, make cold rolling total reduction greater than 75%, the reduction ratio of the 1st road milling train 〉=35% wherein, and the reduction ratio of last 1 road milling train≤10%.In cold continuous rolling process, can adopt roll shifting, roller, protruding roller control and improvement plate shape.
Described cold-reduced sheet annealing and smooth bundling operation comprise: carry out recrystallization annealing in bell type annealing furnace, annealing temperature is controlled at 650～750 ℃, and temperature retention time is controlled at 8～12 hours.Cold-reduced sheet after the annealing carries out 2～10% smooth extensions at smooth unit, carries out the straightening bundling.
Itemize of the present invention and punching operation: the coil of strip behind the bundling is carried out bundling at banding machine, be cut into the width of rotor, stator requirement, carry out the continuous punching sheet at high velocity ram machine, punching speed is 150 ~ 500 times/min.
It is to adopt the vacuum nitrogen continuous annealing furnace that described stress relief annealing is processed; under the protective atmosphere of N2 or N2+H2; 700～900 ℃ are carried out full annealing in continuous annealing furnace; slow cooling is to approximately passing into water vapour 450 ℃ the time again; keep a period of time processing of turning blue; make oxide-film that the surface of punching forms one deck densification as dielectric film, then lamination is made into rotor or stator core.
Embodiment 2, production technology of the present invention comprises: pour in the ladle blast-melted first, blow the magnesium desulfurization by the molten iron preliminary treatment, the converter of oxygen top bottom blowing, pour the molten steel after the desulfurization converter of into oxygen top bottom blowing, in converter, add the steel scrap that accounts for total weight 12% simultaneously, in converting process, in Converter, add lime stone, fluorite, converter adopts omnidistance bottom argon blowing technology when molten steel composition [C]≤0.06%, [P]≤0.04%, [S]≤0.15%, when Molten Steel End Point is 1680 ℃, decide the oxygen tapping, when converter tapping, add double deoxidizer, omnidistance Argon in converter tapping process, measure liquid steel temperature after the Argon, decide oxygen, sampling, in molten steel, feed aluminum steel according to oxygen content in the molten steel, molten steel is sent into vacuum RH refining furnace to be smelted so that molten steel composition [C]=0.004%, [Si]=0.4%, [Mn]=0.7%, [P]=0.015%, [S]=0.008%, [Al]=0.15%, 1580 ℃ of tapping temperatures, molten steel is cast the 70mm heavy slab by thin-slab caster, the conticaster pulling rate is 3.8m/min, continuous casting billet charging temperature 〉=850 ℃, the bringing-up section temperature is 1120 ℃ in the stove, the slab tapping temperature is 1080 ℃, the finish rolling outlet temperature is 880 ℃, coiling temperature is 640 ℃, F1 reduction ratio 53.2%, F2 reduction ratio 50.3%, F7 reduction ratio 15.6%, rolling is the hot rolled plate of 2.5mm for thickness, the hot rolled plate temperature be lower than 60 ℃ take by concentration as 50～120g/L chlorohydric acid pickling, the acid tank temperature is 85 ℃, pickling time is 95 seconds, remove impurity and the iron scale on coil of strip surface, with coil of strip after the pickling rolling through cold continuous mill group be the thick coil of strip of 0.52mm, through 700 ℃ of annealing 12 hours, cold rolling coil was through the smooth processing of 5% elongation, straightening bundling after the annealing after cold rolling, coil of strip behind the bundling is divided into the billot that width is 25～120mm at banding machine, continuously punching on high velocity ram machine, punching speed is 180 times/min, produces rotor for electromotor, the stator sheet that falls apart, these rotors, stator is put into continuous annealing furnace, at N
2Or N
2+ H
2Protective atmosphere under; 780 ℃ are carried out full annealing in annealing furnace, and slow cooling is to approximately passing into water vapour 450 ℃ the time again, keep a period of time processing of turning blue; make oxide-film that the surface of punching forms one deck densification as dielectric film, then lamination is made into rotor for electromotor, stator.All the other are with embodiment 1.
The semi-processed cold-rolled non-oriented electrical steel rotor, the stator that adopt this process to produce, its iron loss is less than 5.12W/kg, and magnetic flux density is greater than 1.72T, and the user can be used for the motor manufacturing with directly purchasing according to need, owing to not having coating, having the good feature of environmental protection and cost advantage.
Embodiment 3, pour in the ladle blast-melted, blow the magnesium desulfurization by the molten iron preliminary treatment, the converter of oxygen top bottom blowing, pour the molten steel after the desulfurization converter of into oxygen top bottom blowing, in converter, add the steel scrap that accounts for total weight 12% simultaneously, in converting process, in Converter, add lime stone, fluorite, converter adopts omnidistance bottom argon blowing technology when molten steel composition [C]≤0.06%, [P]≤0.04%, [S]≤0.15%, when Molten Steel End Point is 1680 ℃, decide the oxygen tapping, when converter tapping, add double deoxidizer, omnidistance Argon in converter tapping process, measure liquid steel temperature after the Argon, decide oxygen, sampling, in molten steel, feed aluminum steel according to oxygen content in the molten steel, molten steel is sent into vacuum RH refining furnace to be smelted so that molten steel composition [C]=0.004%, [Si]=0.45%, [Mn]=0.75%, [P]=0.015%, [S]=0.008%, [Al]=0.14%, 1590 ℃ of tapping temperatures, molten steel is cast the 70mm heavy slab by thin-slab caster, the conticaster pulling rate is 3.8m/min, continuous casting billet charging temperature 〉=850 ℃, the bringing-up section temperature is 1120 ℃ in the stove, the slab tapping temperature is 1080 ℃, the finish rolling outlet temperature is 880 ℃, coiling temperature is 640 ℃, F1 reduction ratio 54.1%, F2 reduction ratio 51.2%, F7 reduction ratio 14.7%, rolling is the hot rolled plate of 2.5mm for thickness, the hot rolled plate temperature be lower than 60 ℃ take by concentration as 50～120g/L chlorohydric acid pickling, the acid tank temperature is 85 ℃, pickling time is 95 seconds, remove impurity and the iron scale on coil of strip surface, with coil of strip after the pickling rolling through cold continuous mill group be the thick coil of strip of 0.52mm, through 700 ℃ of annealing 12 hours, cold rolling coil was through the smooth processing of 8% elongation, straightening bundling after the annealing after cold rolling, coil of strip behind the bundling is divided into the billot that width is 25～120mm at banding machine, continuously punching on high velocity ram machine, punching speed is 200 times/min, produces rotor for electromotor, the stator sheet that falls apart, these rotors, stator is put into continuous annealing furnace, at N
2Or N
2+ H
2Protective atmosphere under; 780 ℃ are carried out full annealing in annealing furnace, and slow cooling is to approximately passing into water vapour 450 ℃ the time again, keep a period of time processing of turning blue; make oxide-film that the surface of punching forms one deck densification as dielectric film, then lamination is made into rotor for electromotor, stator.All the other are with above-mentioned embodiment.
The semi-processed cold-rolled non-oriented electrical steel rotor, the stator that adopt this process to produce, its iron loss is less than 5.08W/kg, and magnetic flux density is greater than 1.72T, and the user can be used for the motor manufacturing with directly purchasing according to need, owing to not having coating, having the good feature of environmental protection and cost advantage.
Claims (8)
1. production technology that adopts half technique steel to produce rotor and stator, it is characterized in that it comprises following operation: smelting molten steel, continuous casting, hot rolling, cold rolling, punching, annealing, itemize, punching and annealing specifically comprise: molten iron preliminary treatment → converter smelting and omnidistance Argon → RH be concise → and CSP continuous casting → CSP heating furnace → CSP hot continuous rolling → pickling and cold rolling → annealing → smooth bundling → itemize → punching → annealing; In the converter steelmaking process, C≤0.01 by mass percentage, P≤0.015, S≤0.012,0.4≤Si≤0.60,0.6≤Mn≤0.8,0.15≤AL≤0.25, all the other are the ratio of Fe, and press Si recovery rate 95%, Mn recovery rate 97%, Al recovery rate 35% is metered into ferrosilicon, ferromanganese and aluminium alloy carries out alloying and makes C≤0.01, P≤0.015, S≤0.012,0.4≤Si≤0.60,0.6≤Mn≤0.8,0.15≤AL≤0.25, and all the other are the semi-processed cold-rolled non-oriented electrical steel of Fe; Again behind CSP continuous casting, CSP hot continuous rolling, carry out cold continuous rolling after the pickling and be made into cold-reduced sheet Deng cooling, after adopting annealing furnace to carry out annealing in process to cold-reduced sheet, adopt smooth unit to carry out carrying out the straightening bundling after 2 ~ 10% the smooth extension, coil of strip behind the bundling carries out the itemize cutting at banding machine, and cut by rotor or stator specification requirement and to cut rotor or stator punching, after carrying out continuous punching on the punch press of rotor or stator punching, rotor or stator punching carried out the rotor or the stator punching that get product after stress relief annealing is processed.
2. the described employing half technique steel production technology of producing rotor and stator according to claim 1, it is characterized in that: when adopting the vacuum metling of RH stove, utilize the RH vacuum degasser that C in the molten steel is taken off below the 60ppm, and make the S of molten steel when going out the RH stove less than 100ppm; In described CSP casting process, pulling rate is controlled between 3.0～4.2m/min.
3. the described employing half technique steel production technology of producing rotor and stator according to claim 1, it is characterized in that: in the described CSP during Hot Strip Rolling, the control heating-up temperature is 1000～1150 ℃, tapping temperature is 980～1120 ℃, 920～860 ℃ of finish rolling outlet temperatures, coiling temperature are 620～660 ℃.
4. the described employing half technique steel production technology of producing rotor and stator according to claim 1, it is characterized in that: the above milling train of 5 passages is set in the described CSP during Hot Strip Rolling, the reduction ratio of the 1st road milling train F1 〉=50%, the accumulation reduction ratio of the 1st ~ 4 road milling train F1 ~ F4 〉=90%, the reduction ratio of last 1 road milling train≤20%.
5. the described employing half technique steel production technology of producing rotor and stator according to claim 1, it is characterized in that: described pickling and cold-rolling process comprise: be sent to descaling bath after hot rolling and the cooling, adopting concentration at descaling bath is that the hydrochloric acid (HCl) of 30～150g/L carries out pickling, temperature is controlled at 80～100 ℃ in the acid cleaning process, pickling operating rate 100 ~ 180m/min, carry out the above cold continuous rolling of 3 passages after the pickling, make cold rolling total reduction greater than 75%, the reduction ratio of the 1st road milling train 〉=35% wherein, and the reduction ratio of last 1 road milling train≤10%.
6. the described employing half technique steel production technology of producing rotor and stator according to claim 1 is characterized in that: in cold continuous rolling process, adopt roll shifting, roller, protruding roller control and improvement plate shape.
7. the described employing half technique steel production technology of producing rotor and stator according to claim 1, it is characterized in that: described cold-reduced sheet annealing process comprises: carry out recrystallization annealing in bell type annealing furnace, annealing temperature is controlled at 650～750 ℃, and temperature retention time is controlled at 8～12 hours.
8. the described employing half technique steel production technology of producing rotor and stator according to claim 1, it is characterized in that: it is to adopt the vacuum nitrogen continuous annealing furnace that described stress relief annealing is processed, at N
2Or N
2+ H
2Protective atmosphere under; 700～900 ℃ are carried out full annealing in continuous annealing furnace; slow cooling is to approximately passing into the water vapour processing of turning blue 450 ℃ the time again, makes oxide-film that the surface of punching forms one deck densification as dielectric film, and then lamination is made into rotor or stator core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310000452.5A CN103066768B (en) | 2013-01-04 | 2013-01-04 | Production craft utilizing semi-processed steel to produce motor rotor and motor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310000452.5A CN103066768B (en) | 2013-01-04 | 2013-01-04 | Production craft utilizing semi-processed steel to produce motor rotor and motor stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103066768A true CN103066768A (en) | 2013-04-24 |
| CN103066768B CN103066768B (en) | 2014-03-12 |
Family
ID=48109265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310000452.5A Expired - Fee Related CN103066768B (en) | 2013-01-04 | 2013-01-04 | Production craft utilizing semi-processed steel to produce motor rotor and motor stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103066768B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103468907A (en) * | 2013-09-18 | 2013-12-25 | 济钢集团有限公司 | Method for producing cold-rolled non-oriented electrical steel based on ASP (AnGang Strip Production) medium thin slab continuous casting and rolling process |
| CN105779877A (en) * | 2014-12-23 | 2016-07-20 | 鞍钢股份有限公司 | Efficient production method for semi-process non-oriented electrical steel |
| CN105779730A (en) * | 2014-12-23 | 2016-07-20 | 鞍钢股份有限公司 | Production method for semi-processed electrical steel |
| CN106048389A (en) * | 2016-07-18 | 2016-10-26 | 华南理工大学 | Production method of non-oriented electrical steel 50W800 by traditional hot continuous rolling process |
| CN106048390A (en) * | 2016-07-18 | 2016-10-26 | 华南理工大学 | Method for producing non-oriented electrical steel 50W800 through thin slab casting and rolling |
| CN106998120A (en) * | 2016-01-26 | 2017-08-01 | 坦普尔钢铁公司 | The method for manufacturing the improvement driver for generator |
| CN107119178A (en) * | 2017-05-03 | 2017-09-01 | 南通长江电器实业有限公司 | A kind of dynamo sheet annealing process |
| CN108913852A (en) * | 2018-06-29 | 2018-11-30 | 首钢京唐钢铁联合有限责任公司 | A method of tin plate substrate is produced based on bell-type annealing technique |
| CN110212712A (en) * | 2017-07-15 | 2019-09-06 | 芜湖乾凯材料科技有限公司 | Electric machine iron core of low stress and preparation method thereof |
| CN110385339A (en) * | 2019-06-12 | 2019-10-29 | 佛山职业技术学院 | A kind of levelling method of half technique steel |
| CN110819879A (en) * | 2019-11-22 | 2020-02-21 | 马鞍山钢铁股份有限公司 | Non-oriented silicon steel with excellent magnetic property and manufacturing method thereof |
| RU2809983C1 (en) * | 2023-06-29 | 2023-12-20 | федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский университет науки и технологий" | Method for manufacturing electric machine stator with axial magnetic flux |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100473A (en) * | 1994-06-18 | 1995-03-22 | 武汉钢铁(集团)公司 | Producing method for non-oriented electrical steel plate |
| JP2001200333A (en) * | 1991-03-20 | 2001-07-24 | Hitachi Ltd | Rotor shaft for rotary electric machine and rotary electric machine using same |
| CN101082075A (en) * | 2006-05-29 | 2007-12-05 | 宝山钢铁股份有限公司 | Process and device for coating-free electrical steel annealing and bluing |
| CN101876028A (en) * | 2009-12-22 | 2010-11-03 | 武汉钢铁(集团)公司 | Non-oriented electrical steel for variable frequency motor and production method thereof |
-
2013
- 2013-01-04 CN CN201310000452.5A patent/CN103066768B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001200333A (en) * | 1991-03-20 | 2001-07-24 | Hitachi Ltd | Rotor shaft for rotary electric machine and rotary electric machine using same |
| CN1100473A (en) * | 1994-06-18 | 1995-03-22 | 武汉钢铁(集团)公司 | Producing method for non-oriented electrical steel plate |
| CN101082075A (en) * | 2006-05-29 | 2007-12-05 | 宝山钢铁股份有限公司 | Process and device for coating-free electrical steel annealing and bluing |
| CN101876028A (en) * | 2009-12-22 | 2010-11-03 | 武汉钢铁(集团)公司 | Non-oriented electrical steel for variable frequency motor and production method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 朱涛等: "薄板坯连铸连轧工艺半工艺无取向电工钢研制", 《钢铁》 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103468907A (en) * | 2013-09-18 | 2013-12-25 | 济钢集团有限公司 | Method for producing cold-rolled non-oriented electrical steel based on ASP (AnGang Strip Production) medium thin slab continuous casting and rolling process |
| CN105779877A (en) * | 2014-12-23 | 2016-07-20 | 鞍钢股份有限公司 | Efficient production method for semi-process non-oriented electrical steel |
| CN105779730A (en) * | 2014-12-23 | 2016-07-20 | 鞍钢股份有限公司 | Production method for semi-processed electrical steel |
| CN105779877B (en) * | 2014-12-23 | 2017-10-27 | 鞍钢股份有限公司 | A kind of high-efficiency method for producing of half-technique non oriented electrical steel |
| CN106998120B (en) * | 2016-01-26 | 2021-01-08 | 腾普(常州)精机有限公司 | Method of manufacturing an improved exciter for a generator |
| CN106998120A (en) * | 2016-01-26 | 2017-08-01 | 坦普尔钢铁公司 | The method for manufacturing the improvement driver for generator |
| CN106048389A (en) * | 2016-07-18 | 2016-10-26 | 华南理工大学 | Production method of non-oriented electrical steel 50W800 by traditional hot continuous rolling process |
| CN106048390A (en) * | 2016-07-18 | 2016-10-26 | 华南理工大学 | Method for producing non-oriented electrical steel 50W800 through thin slab casting and rolling |
| CN106048390B (en) * | 2016-07-18 | 2018-12-21 | 华南理工大学 | A kind of production method of thin slab continuous casting and rolling production non-oriented electrical steel 50W800 |
| CN107119178A (en) * | 2017-05-03 | 2017-09-01 | 南通长江电器实业有限公司 | A kind of dynamo sheet annealing process |
| CN110212712A (en) * | 2017-07-15 | 2019-09-06 | 芜湖乾凯材料科技有限公司 | Electric machine iron core of low stress and preparation method thereof |
| CN110212712B (en) * | 2017-07-15 | 2021-09-07 | 芜湖乾凯材料科技有限公司 | Low-stress motor iron core and preparation method thereof |
| CN108913852A (en) * | 2018-06-29 | 2018-11-30 | 首钢京唐钢铁联合有限责任公司 | A method of tin plate substrate is produced based on bell-type annealing technique |
| CN110385339A (en) * | 2019-06-12 | 2019-10-29 | 佛山职业技术学院 | A kind of levelling method of half technique steel |
| CN110819879A (en) * | 2019-11-22 | 2020-02-21 | 马鞍山钢铁股份有限公司 | Non-oriented silicon steel with excellent magnetic property and manufacturing method thereof |
| RU2809983C1 (en) * | 2023-06-29 | 2023-12-20 | федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский университет науки и технологий" | Method for manufacturing electric machine stator with axial magnetic flux |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103066768B (en) | 2014-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103066768B (en) | Production craft utilizing semi-processed steel to produce motor rotor and motor stator | |
| CN103060680A (en) | Semi-process cold-rolling non-oriented electrical steel and production process thereof | |
| CN106048390B (en) | A kind of production method of thin slab continuous casting and rolling production non-oriented electrical steel 50W800 | |
| CN101845599B (en) | Weathering steel and manufacturing method thereof | |
| CN104141092B (en) | A kind of three-dimensional reel iron core transformer non-oriented electrical steel and production method thereof | |
| CN107245644B (en) | Based on the high magnetic strength of thin strap continuous casting, low iron loss Thin Specs non-orientation silicon steel preparation method | |
| CN101927432B (en) | Manufacturing method of high-manganese strip steel with high strength and plasticity | |
| CN103468907B (en) | Method for producing cold-rolled non-oriented electrical steel based on ASP (AnGang Strip Production) medium thin slab continuous casting and rolling process | |
| CN110218945A (en) | A kind of non-oriented electrical steel and preparation method thereof of no corrugated defect | |
| CN101935802B (en) | Method for producing 490MPa level acid-washing-free hot rolled steel plate | |
| CN107201478B (en) | A kind of Ultra-low carbon orientation silicon steel preparation method based on reducing twin-roll thin strip continuous casting technology | |
| CN104313467B (en) | A kind of smelting process of non-oriented electrical steel | |
| CN106048389A (en) | Production method of non-oriented electrical steel 50W800 by traditional hot continuous rolling process | |
| CN104831207A (en) | Thin gauge 600MPa grade hot galvanized plate production method | |
| CN109082607A (en) | A kind of non-orientation silicon steel and its hot continuous rolling process | |
| CN102274936A (en) | Method for manufacturing non-oriented silicon steel plate based on twin-roll thin strip continuous casting technology | |
| CN102925806A (en) | Y55 mark free-cutting steel plate and manufacture method thereof | |
| CN108085603B (en) | A kind of high grade non-oriented silicon steel preparation method based on thin strap continuous casting | |
| CN104726670B (en) | A kind of method that short route medium thin slab prepares high magnetic induction grain-oriented silicon steel | |
| CN101487097B (en) | High strength cold rolling packaging steel belt and production method thereof | |
| CN101956127B (en) | Manufacturing method of Sn contained non-oriented electrical steel and plate coil | |
| CN108546881A (en) | A kind of preparation method of no yield point elongation cold rolling medium managese steel strip | |
| CN106086354A (en) | A kind of production method of the coating non-oriented electrical steel 50W600 that turns blue | |
| CN106048140A (en) | Production method of non-oriented electrical steel 50w800 with blueing coating | |
| CN105369134B (en) | 400MPa grades is exempted from pickling vehicle structure hot rolled steel plate and its production method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20190104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |