43results about How to "Maintain metallic luster" patented technology

The invention discloses an imitation aluminum composite membrane comprising a PET (Polyether) membrane layer, an adhesive layer, an aluminum foil layer and a PVC (Polyvinyl Chloride) membrane layer. The imitation aluminum composite membrane is characterized in that: the PET membrane layer and the PVC membrane layer are adhered to two sides of the aluminum foil layer through the adhesive layer (4). In the other technical scheme, the PET membrane layer is used for replacing the PVC membrane layer. According to the imitation aluminum composite membrane provided by the invention, the metallic luster and the texture of aluminum metal materials are integrally kept; meanwhile, the aluminum foil layer is located between the PET membrane layer and the PVC / PET membrane layer, so that the oxygen gas can be isolated, the oxidization is prevented and the effect of keeping the previous metallic luster of the aluminum foil for a long time is achieved; and the imitation aluminum composite membrane can be further compounded on surfaces of cold-rolled sheets, aluminum sheets, zinc-plated sheets and building materials to have the decorative, protective and beautiful functions; and the composition membrane has the advantages of simple process, convenience for operation and low cost.

The invention relates to an inhibitor in an aqueous heat exchange medium for La-Fe-Si series room temperature magnetic refrigeration materials, which belongs to the field of functional materials and can significantly improve the corrosion resistance of the La-Fe-Si series room temperature magnetic refrigeration materials in an aqueous heat exchange fluid. The inhibitor consists of the following components in percentage by weight: 0.1 to 10 weight percent of molybdenate, 0 to 5 weight percent of dichromate, 0 to 8 weight percent of nitrite, 0.5 to 3 weight percent of orthophosphate, 0.05 to 2 weight percent of silicate, 0 to 1 weight percent of borate, 0 to 3 weight percent of sodium benzoate, 0 to 0.1 weight percent of zinc sulfate, 0 to 0.5 weight percent of sodium carbonate, and 0 to 10weight percent of triethanolamine. The inhibitor has the characteristics of a small usage amount, simple using method and high corrosion inhibition efficiency, and can significantly improve the corrosion resistance of the magnetic refrigeration materials after being added into the aqueous heat exchange medium.

The invention discloses a PET-PET (Polyether) imitation stainless steel composite membrane comprising two layers of PET membrane layers, a wiredrawing aluminum foil layer, an adhesive layer and a printing and coloring layer. The composite membrane is characterized in that: the two layers of the PET membrane layers are adhered to two sides of the wiredrawing aluminum foil layer through the adhesive layer; and the printing and coloring layer is also arranged at the outer sides of the PET membrane layers which are located on a wiredrawing surface of the wiredrawing aluminum foil layer. The PET-PET imitation stainless steel composite membrane provided by the invention has special metallic luster and microgroove texture of wiredrawing stainless steel so that the effects of highly imitating the wiredrawing stainless steel are achieved; the aluminum foil treated by the wiredrawing is cladded at the inner parts of the PET membrane layers so that the oxygen gas can be isolated, the oxidation corrosion is prevented and the effect of keeping the previous metallic luster and wiredrawing texture for a long time is achieved; and the PET-PET imitation stainless steel composite membrane can be widely applied to the fields of cars, refrigerators, washing machines, kitchen equipment and the like.

The invention mainly relates to the technical field of machining, and discloses a surface treatment method for a motor case of a washing machine. The method comprises the steps: coarse grinding, fine grinding, washing, and coating. The method is simple, facilitates the operation, enables the roughness to be reduced to 0.13 microns, and enables the surface of the motor case to be smooth and repellent to water. The method enables a person to place the washing machine in a bathroom safely, enables the service life of the motor of the washing machine to be prolonged by 34%-36%, and improves the use performances of the washing machine. The coarse grinding of the motor cause, produced through casting, of the washing machine is carried out at first, so as to reduce the roughness of the motor case and to improve the work efficiency; and then the coarse grinding part is frozen for a long time and then the fine grinding of the coarse grinding part is carried out, so as to reduce the fine grinding difficulty and the heat generated by fine grinding, speed up the grinding speed, and maintaining the metallic luster of the motor case. The temperature of the motor case is quickly increased after fine grinding, and then the motor case is placed in hydrochloric acid solution, thereby achieving the quenching of the motor case, improving the strength and glossiness of the motor case, removing the dirt on the motor case, facilitating the subsequent processing, saving the operations, and improving the processing efficiency.