Manufacturing method of Sn contained non-oriented electrical steel and plate coil

The invention discloses a method for preparing a Sn-containing non-oriented electrical steel, including a continuous casting process, a heating process, a rolling process and a cooling process. In the continuous casting process, the molten steel overheating is controlled in a liquidus line +15-30 DEG C. A crystallizer adopts a sine vibration curve with a vibration frequency of 260-300time/s and an amplitude of 6-7mm. A casting speed of the continuous casting is 3.0-4.5m/min. The cooling water distribution form after two cooling curve crystallizers is a sine curve. The cooling water volume is 5000L-7000L/min. Protective slag of the crystallizer is superlow carbon protective slag. The heating system adopts a tunnel kiln and heats at 1150+/-20DEG C. The continuous rolling process comprises: a beginning rolling temperature of 1070+/-30 DEG C, a final rolling temperature of 800-900 DEG C, and a reeling temperature of 650-750 DEG C. A depressing system includes that: a relative depressing rate ...

Environment protection heat-proof acrylic resin insulation paint

The invention discloses an environment-friendly heat-proof acrylic resin insulating coating, comprising nm inorganic modified acrylic acid latex, nm acrylic acid resin, inorganic filler, curing agent, wherein the weight ratio of nm inorganic modified acrylic acid latex, nm acrylic acid resin, inorganic filler and curing agent is 10-40:20-40:20-40:5-15. The coating has no chromate and the adhesiveforce thereof can be 1 lever, and the interface resistance is above 800 omega.mm², with excellent waterproof and antirust property. The coating does not come off after annealing at 750 degree with good interface resistance and corrosion resistance.

Sn contained non-oriented electrical steel and plate coil manufacturing method thereof

The invention discloses Sn contained non-oriented electrical steel. The Steel comprises the following chemical components in percentage by weight: not more than 0.0030 percent of C, 0.35-0.55 percent of Si, 0.20-0.45 percent of Mn, 0.20-0.40 percent of Als, 0.04-0.08 percent of Sn, not more than 0.10 percent of P, not more than 0.0070 percent of S and the balance of Fe and impurity elements. A hot rolling plate coil of the Sn contained non-oriented electrical steel is manufactured by a continuous sheet billet casting and rolling process, thus the production cost is reduced.

Electrical steel producing process

Process of producing semi-technological electrical steel

Furnace roller combination device of annealing furnace applied to lamellose metal material thermal treatment process

The invention discloses a furnace roller combination device of an annealing furnace applied to a lamellose metal material thermal treatment process. The device comprises a furnace roller, a furnace roller base and a furnace roller driving device, wherein the furnace roller is installed on the furnace roller base; the furnace roller combination device also comprises a furnace roller nodule self-clearing device; the furnace roller nodule self-clearing device is arranged at one side of the furnace roller; and the most top end of the furnace roller nodule self-clearing device and the rotation surface of the furnace roller are in line contact with pressure when in work. By using the technical scheme, nodular materials can be prevented from leaving imprints on the surface of the lamellose metal material, so that the smooth surface of the lamellose metal material is not damaged and the degradation of the quality of the lamellose metal material or the generation of waste products is not caused; ...

Environment protection heat-proof acrylic resin insulation paint

The invention discloses an environment-friendly heat-proof acrylic resin insulating coating, comprising nm inorganic modified acrylic acid latex, nm acrylic acid resin, inorganic filler, curing agent, wherein the weight ratio of nm inorganic modified acrylic acid latex, nm acrylic acid resin, inorganic filler and curing agent is 10-40:20-40:20-40:5-15. The coating has no chromate and the adhesive force thereof can be 1 lever, and the interface resistance is above 800 omega.mm2, with excellent waterproof and antirust property. The coating does not come off after annealing at 750 degree with good interface resistance and corrosion resistance.

Non-oriented electrical steel chromium-free insulation paint

The invention discloses a kind of non oriented electrical steel non chrome insulating coating, comprising metal phosphate, organic resin, molybdenate, wherein the weight ratio of the metal phosphate, organic resin and molybdenate is: 1:0.1-2:0.0005-0.2. The coating does not come off after annealing at 750 degree with good interface resistance and corrosion resistance when the environmental protection is ensured.

Electric steel insulating paint with high comprehensive performance

The invention provides an electric steel insulating paint with a high comprehensive performance. The electric steel insulating paint is characterized by comprising the following components in percentage by weight: 1 to 40 percent of hexavalent chromic salt, 0.01 to 10 percent of calcium salt, 0.5 to 35 percent of magnesium salt, 0.2 to 20 percent of borate, 0.05 to 15 percent of phosphate, 0.05 to 10 percent of silicon dioxide, 0.5 to 40 percent of organic resin emulsion, 0.5 to 15 percent of polyhydric alcohol, 0.05 to 1 percent of polyether modified polydimethyl siloxane and 0.03 to 3 percent of paint additive. A coating layer employing the electric steel insulating paint has the high comprehensive performance.

Non-oriented electric steel semi-organic phosphate insulating paint with good corrosion resistance

The invention discloses a non-oriented electric steel semi-organic phosphate insulating paint with good corrosion resistance. The semi-organic phosphate insulating paint comprises the following main components: water-soluble phosphate, tungstate, organic resin, water, a titanate coupling agent, an organic solvent and the like; and contents of the components of the insulating paint (parts by weight) based on 100 parts of the water-soluble phosphate by weight are as follows: 1-15 parts of the tungstate, 20-200 parts of the organic resin, 500-2000 parts of the water, 0.1-3 parts of the titanate coupling agent, 10-50 parts of the organic solvent and 0.1-3 parts of other paint addictives. The semi-organic phosphate insulating paint contains no harmful ingredients restricted by an EU directive RoHS, which can meet the requirements for environmental protection; and compared with the common phosphate coating, the coating of the semi-organic phosphate insulating paint has better corrosion resistance ...

Furnace roller composite set applied in annealing furnace in heat treatment

Disclosed is a furnace roller composite set applied in an annealing furnace in heat treatment, comprising a furnace roller, a furnace roller pedestal and a furnace roller drive unit. The furnace roller is mounted on the furnace roller pedestal. The furnace roller composite set also includes a furnace roller nodulation self-purging unit which is arranged under the furnace roller. The furnace roller nodulation self-purging unit and the furnace roller respectively connect with the anode and the cathode of a power supply or with an AC power supply. An electric field is formed between the furnace roller nodulation self-purging unit and the rotation surface of the furnace roller. The technical scheme provided in the invention prevents nodular objects from leaving moulage on surfaces of metal materials, wherein the moulage destroys the smoothness of surfaces of laminal metal materials and results in degradation of the quality of the laminal metal materials or generation of waste, and has thecharacteristics ...

Full-technique non-oriented electrical steel continuous annealing test method

The invention discloses a method for testing the continuous-annealing of complete-process non-oriented electrical steel. The method comprises the following procedures: sample plate testing preparation; thermoelectric couple welding; simulation testing; and test result detecting: the procedure of sample plate testing preparation comprises the following steps: carrying out the deoiling and degreasing treatment and heat preservation drying on the surface of the testing sample plate, evenly coating the dried surface of the sample plate with high-temperature resistant anti-oxidation coatings and further carrying out curing and sintering, wherein, the electrical steel cold-rolling hard plate is adopted as the sample plate with the dimension being 250 mm * 450 mm (450 as the rolling direction), and the surface thereof is free from defects affecting magnetic properties; in the procedure of thermoelectric couple welding, 5 or 3 pairs of thermoelectric couples are welded in diagonal distribution ...

Pickling apparatus and process for continuously cast and rolling for steel plate

Copper alloy applied to clamping and loading tools of strip steel welding equipment and its production method

The invention discloses a copper alloy which is applied to clamping and loading tools of the strip steel welding equipment and its production method, the mass percentage of the chemical components comprises: 0.5% to 2.0% of Ni, 0.05% to 0.7% of Cr, 0.05% to 0.3% of Zr, 0.05% to 0.3% of Be, 0.05% to 0.3% of rare earth, the balance Cu and the unavoidable impurity elements. The production method comprises a master alloy preparation treatment, a pure copper melting treatment for producing copper alloy, a solid solution treatment, an aging treatment and a stress-relieve treatment. The copper alloy has the advantages of high strength and hardness, the conductivity satisfies the requirement, and the copper alloy has the characteristic of heat resistance, the number of welding is greatly increased due to wear resistance and temperature resistance, the working life of conductive and clamping copper alloy components can be raised.

Low-carbon low-silicon high-efficiency non-oriented electrical steel sheet and production method thereof

The invention discloses a low-carbon low-silicon high-efficiency non-oriented electrical steel sheet which is prepared from the following components in percentage by weight: not more than 0.0060 percent of C, 0.35-0.55 percent of Si, 0.20-0.45 percent of Mn, not more than 0.10 percent of P, not more than 0.0070 percent of S, not more than 0.20-0.40 percent of AlS and the balance of Fe and inevitable impurities. The production method of the low-carbon low-silicon high-efficiency non-oriented electrical steel sheet comprises the following steps of: pretreating molten iron, smelting in a 120 tonconverter, blowing argon in a steel ladle, carrying out RH (Ruhrstahl-Heraeus) vacuum treatment, refining in a LF (Ladle Furnace), entering a thin slab blank to continuously cast, soaking in a tunnelfurnace and rolling by a continuous rolling mill train with seven stands, wherein a final rolling temperature is 800-900 DEG C and a rolling temperature is 650-750 DEG C; and adopting a rear-section laminar ...

Continuous casting and rolling process for producing IF steel form thin slab

Method for producing low-carbon low-silicon high magnetic induction non-oriented electrical steel plate by CSP process

The invention discloses a low-carbon low-silicon high magnetic induction non-oriented electrical steel plate which comprises the following components in percentage by weight: at most 0.010% of C, 0.30-0.70% of Si, 0.15-0.55% of Mn, at most 0.15% of P, at most 0.010% of S, at most 0.008% of Als and the balance of Fe and inevitable impurity elements. The production method thereof comprises the following steps: hot iron pretreatment, 120 ton converter smelting, ladle argon blowing, RH vacuum treatment, sheet billet continuous casting, soaking in a tunnel furnace and rolling in a 7-frame continuous rolling mill train. The finishing temperature is 800-950 DEG C; the winding temperature is 650-780 DEG C; and the back end laminar cooling technique is adopted after rolling. The invention carries out CSP continuous batch casting with aluminum-free molten steel for the first time, fully displays the technical advantages of beneficial effect on raw material tissues and flexible control on rolling ...

Full-technique non-oriented electrical steel continuous annealing test method

The invention discloses a method for testing the continuous-annealing of complete-process non-oriented electrical steel. The method comprises the following procedures: sample plate testing preparation; thermoelectric couple welding; simulation testing; and test result detecting: the procedure of sample plate testing preparation comprises the following steps: carrying out the deoiling and degreasing treatment and heat preservation drying on the surface of the testing sample plate, evenly coating the dried surface of the sample plate with high-temperature resistant anti-oxidation coatings and further carrying out curing and sintering, wherein, the electrical steel cold-rolling hard plate is adopted as the sample plate with the dimension being 250 mm * 450 mm (450 as the rolling direction), and the surface thereof is free from defects affecting magnetic properties; in the procedure of thermoelectric couple welding, 5 or 3 pairs of thermoelectric couples are welded in diagonal distribution ...

Non-oriented electrical steel chromium-free insulation paint

The invention discloses a kind of non oriented electrical steel non chrome insulating coating, comprising metal phosphate, organic resin, molybdenate, wherein the weight ratio of the metal phosphate, organic resin and molybdenate is: 1:0.1-2:0.0005-0.2. The coating does not come off after annealing at 750 degree with good interface resistance and corrosion resistance when the environmental protection is ensured.