42results about How to "Less impurity elements" patented technology

The invention discloses a high-Al electrical steel square billet for an automobile generator pole claw and a production method of the high-Al electrical steel square billet. The electrical steel square billet comprises chemical components including, by mass, 0-0.010% of C, 0-0.10% of Si, 0-0.10% of Mn, 0-0.010% of P, 0-0.010% of S, 0.30%-0.40% of Alt and the balance Fe and inevitable impurities. The production method comprises the steps of molten iron pretreatment, converter smelting, LF furnace treatment, RH furnace treatment, continuous casting and cogging. A small square billet product produced through the production method is stable and uniform in component and small in impurity element amount, and production requirements of users for the automobile generator pole claw for export are met; and through the product, the generating capacity can be improved by 5%-8%, meanwhile, the overall thickness of the pole claw can be decreased by 0.5 mm, the magnetic resistance is effectively reduced, a remarkable effect on dynamic balance and light weight is achieved, the quality requirements for stable generating capacity and low noise of the export generator pole claw can be met, and the using effect is great.

The invention provides a stone preparation method and a polishing system thereof. By preparing a silicon dioxide layer, adding an inorganic filler material and a binder, stirring and mixing molding, after being processed by a polishing system, and finally coating the surface of the stone with modified The transparent UV-curable coating of permanent composite tourmaline powder is used for clean and anti-fouling treatment. The silicon dioxide-containing layer of the prepared stone has better bonding performance with the cured coating containing the modified composite tourmaline powder, and the polishing medium is silicon, silica gel and silicon dioxide, with few impurity elements, and the stone is polished evenly. The glossiness is remarkable; the present invention further improves the glossiness of the stone surface and also increases the durability of the stone surface Corrosion and weather resistance; combined with the polishing monitoring system set in the polishing system, it can more accurately control the polishing degree of the stone.

A lithium battery tab metal strip treatment solution and tab treatment process, the treatment solution is obtained from the compounding of alkylphenol polyoxyethylene ether, glycol, alcohol amine and polyquaternary ammonium salt, the alkyl group in the treatment solution The molar concentration of phenol polyoxyethylene ether is 0.001~0.01mol / L, the molar concentration of diol is 0.0005~0.005mol / L, the molar concentration of alcohol amine is 0.001~0.01mol / L, the molar concentration of polyquaternium 0.005-0.05mol / L. The invention can effectively remove impurities on the surface of the tab metal strip without corroding the tab of the metal strip, can improve the bonding effect of the tab glue and the metal strip, and improve the electrolyte resistance and penetration resistance of the tab.