5 results about "Surface strength" patented technology

The invention discloses a wearable steel ball with a reinforced framework. The wearable steel ball comprises the framework and a metal base body formed by casting a metal alloy on the framework, wherein the framework is of an integrated structure and is used for separating a space inside the steel ball into a plurality of spaces, and the metal base body is filled inside the framework and covers the framework. The wearable steel ball with the reinforced framework, disclosed by the invention, has good impact resistance and surface strength, and is easy to recycle and high in use efficiency.

The invention discloses a tool for crystal cutting and a crystal cutting assembly. The tool for the crystal cutting and the crystal cutting assembly mainly comprise a machine base, the upper surface of the machine base is of a rectangle-shaped structure, and a left roller conveyer and a right roller conveyor are correspondingly arranged on the left side and the right side of the machine base; a top plate horizontally arranged is arranged at the position above the machine base, and the machine base is fixedly connected with four corners of the lower surface of the top plate through vertical columns; and the vertical columns are correspondingly fixedly connected to a connecting top plate and the machine base through bolts. According to the tool for the crystal cutting and the crystal cuttingassembly, the surface strength of a crystal is enhanced by topspeed cooling, so that when a crystal cutter carries out cutting, the crushing of the crystal caused by short-term strong extrusion cannot occur, so that the actual cutting quality of the crystal is improved, and the occurrence of the condition of uneven layers due to the fact that crushing appears in crystal cutting seams is further avoided.

The invention discloses aluminum sol composite polyimide powder paint. The aluminum sol composite polyimide powder paint is prepared from the following raw materials in parts by weight: 0.6 to 1 part of sodium carboxymethyl cellulose, 0.3 to 1 part of 8-hydroxyquinoline, 2 to 4 parts of oxidized polyethylene wax, 100 to 110 parts of polyimide, 10 to 14 parts of graphite fluoride, 0.1 to 0.3 part of potassium persulfate, 1 to 2 parts of sodium nitrate, 0.1 to 0.4 part of potassium permanganate, 4 to 6 parts of sebacic acid, 0.5 to 1 part of phosphorus pentoxide, 0.1 to 0.2 part of dicyclohexylcarbodiimide, 0.1 to 0.2 part of 4-dimethylaminopyridine, 4 to 7 parts of aluminum isopropoxide, 1 to 2 parts of pyromellitic dianhydride, 0.6 to 1 part of didecyl dimethyl ammonium bromide, 0.8 to 1 part of nickel aminosulfonate, 3 to 4 parts of mannitol and a proper amount of dimethylformamide, sulfuric acid and absolute ethyl alcohol. The aluminum sol composite polyimide powder paint takes the aluminum isopropoxide as a precursor and obtained sol can be effectively improved the dispersity of filling between polymers, and the stability and surface strength of finished product are improved.

A method for measuring strength of an image forming surface of a planographic printing plate. In this method, an image forming surface of a planographic printing plate is contacted with a non-image forming surface of another planographic printing plate, a weight of predetermined mass is placed thereon, and the planographic printing plates are slid against each other in a direction along the image forming surface. A maximum value of pressure that does not generate damage when applied to the image forming surface of the lower planographic printing plate is used as strength of the image forming surface. By stacking and packaging planographic printing plates having an image forming surface strength of no less than a specified value, damage to the image forming surfaces of the planographic printing plates in a packaged state can be prevented.