Abstract: Disclosed is a non-oriented electrical steel plate having a good surface state, a high magnetic induction and a low iron loss, the contents of various chemical elements of the non-oriented electrical steel plate in mass percentage being: 0<C?0.004%, 0.1%?Si?1.6%, 0.1%?Mn?0.8%, 0.1%?Al?0.6%, Ti?0.0015%, and the balance being Fe and other inevitable impurities, with 0.2%?(Si+Al)?2.0% being met. Also disclosed is a method for manufacturing the above-mentioned steel plate, comprising the steps: a liquid iron pretreatment, smelting with a converter, RH refining, casting into slabs, hot rolling, acid pickling, cold rolling, annealing and coating. The non-oriented electrical steel plate of the present invention has an excellent magnetic property, an ultralow iron loss and a higher steel purity; in addition the surface quality of the steel plate is good and the production cost is low.

Abstract: Disclosed is a non-oriented electrical steel plate having a good surface state, a high magnetic induction and a low iron loss, the contents of various chemical elements of the non-oriented electrical steel plate in mass percentage being: 0<C?0.004%, 0.1%?Si?1.6%, 0.1%?Mn?0.8%, 0.1%?Al?0.6%, Ti?0.0015%, and the balance being Fe and other inevitable impurities, with 0.2%?(Si+Al)?2.0% being met. Also disclosed is a method for manufacturing the above-mentioned steel plate, comprising the steps: a liquid iron pretreatment, smelting with a converter, RH refining, casting into slabs, hot rolling, acid pickling, cold rolling, annealing and coating. The non-oriented electrical steel plate of the present invention has an excellent magnetic property, an ultralow iron loss and a higher steel purity; in addition the surface quality of the steel plate is good and the production cost is low.

Abstract: A method of manufacturing oriented Si steel containing Cu with high electric-magnetic property comprises: hot rolling slab; after first cold rolling, heating it to 800° C. or higher temperature and performing intermediate decarburization annealing in a protective atmosphere with PH2O/PH2 of 0.50˜0.88 for 3-8 minutes, to decrease carbon content of the steel plate to less than 30 ppm; then peening and acid-pickling to remove oxide of Fe on surface and to control oxygen content to lower than 500 ppm; secondary cold rolling to final thickness and coating separation agent in water-slurry form; drying to decrease water content to lower than 1.5%; high-temperature annealing in a protective atmosphere containing hydrogen with oxidation degree (PH2O/PH2) of 0.0001-0.2; finally applying a tension coating and leveling tension annealing.

Abstract: A method of manufacturing oriented Si steel containing Cu with high electric-magnetic property comprises: hot rolling slab; after first cold rolling, heating it to 800° C. or higher temperature and performing intermediate decarburization annealing in a protective atmosphere with PH2O/PH2 of 0.50˜0.88 for 3-8 minutes, to decrease carbon content of the steel plate to less than 30 ppm; then peening and acid-pickling to remove oxide of Fe on surface and to control oxygen content to lower than 500 ppm; secondary cold rolling to final thickness and coating separation agent in water-slurry form; drying to decrease water content to lower than 1.5%; high-temperature annealing in a protective atmosphere containing hydrogen with oxidation degree (PH2O/PH2) of 0.0001-0.2; finally applying a tension coating and leveling tension annealing.

Abstract: A self-adhesive coating for electrical steel and its uses is described. The coating includes 81-99.9 weight parts of aqueous epoxy resin emulsion, 0.07-17 weight parts of curing agent, and optionally 0.3 weight parts of accelerant. The coating optionally contains additives selected from diluent, filler, toughener, colorant, fire retardant, antirusting agent, antisettling agent, thixotropic agent or antifoamer, thickener, pigment dispersant, preservative, and the like. The coating can be used as electrical steel coating. The coating is capable of making electrical steel with a self-adhesive coating by naked-flame heat, and also there are no poisonous organic solvents to volatilize during the entire process. The coating can avoid use of an apparatus for burning organic solvents, which reduced cost.

Abstract: An adjusting distance device using a resilient lead screw automatically includes a pair of split semi-screws which have exterior screw threads resiliently retained in place inside a lead sleeve which have inner screw threads. When the resilient lead screw is in an open status, the threads of the split semi-screws will be in mesh with the threads of the lead sleeve. When the resilient lead screw is a closed status, the threads of the split semi-screws will not be in mesh with the threads of the lead sleeve, thus the lead screw can be rapidly pushed to its working position or retracted to adjust distance rapidly. The lead screw can be centered, engaged, split and self-locked automatically. This device has compact structure, can be used effectively, and can be fabricated relatively small in size. It can be used in vice or jack.

Abstract: The present invention relates to a self-adhesive coating for electrical steel and its uses. The coating comprises 81-99.9 weight parts of aqueous epoxy resin emulsion, 0.07-17 weight parts of curing agent, and optionally 0.3 weight parts of accelerant. If required, said coating can optionally contain additives selected from diluent, filler, toughener, colorant, fire retardant, antirusting agent, antisettling agent, thixotropic agent or antifoamer, thickener, pigment dispersant, preservative, and the like. The coating can be used as electrical steel coating. The present coating is capable of making electrical steel with a self-adhesive coating in a way of heat by naked-flame, and also there are no poisonous organic solvents to volatilize during the entire process. Furthermore, the coating permits to omit apparatus for burning organic solvents, and the cost is thereby reduced.