4results about How to "Eliminate grinding process" patented technology

The present application provides a ball nose end mill which is suitable for finish machining, can obtain a processed surface with excellent gloss in cutting machining of a plane perpendicular to the tool rotation axis of a die or the like at the front end of the tool, and can omit the polishing process or reduce the polishing machining time. A plurality of chip discharge grooves (2) which are open at the front end and extend from the front end side of the tool toward the base end side of the tool are formed on the outer periphery of a tool body (1), a ball nose edge (5) is provided at the intersection ridge line portion of a rake face (3) of the chip discharge groove (2) and a front end relief face (4) of the tool body (1), a plane (6) perpendicular to the tool rotation axis (a) of the tool body (1) is provided at the front end of the tool, and the intersection ridge line portion of the plane (6) and the rake face (3) is configured as a center side cutting edge (7) connected to the ball nose edge (5).

The present application discloses a preparation method of a bimetallic composite plate by a Bridgman method, wherein the bimetallic composite plate is composed of a metal substrate and a cladding plate, wherein the cladding plate is obtained by sintering after granulating metal powder, and the steps include: (1) the metal substrate is corrected and leveled, and the top surface is sequentially rusted, degreased and roughened, and cleaned for use; (2) the metal powder is mixed and granulated, poured on the top surface of the metal substrate, and smoothed after vibration; (3) the metal substrate with the top surface covered with metal mixed particles is horizontally sent into a regional sintering furnace, inert gas protection is introduced, and heated to the liquefaction sintering temperature of the metal particles, the temperature zone width is 10-50cm, and the regional high temperature is gradually passed at a speed of 30-200cm / h to complete sintering; (4) cooling gas is blown to the metal substrate at the bottom of the regional sintering furnace outlet, and the bimetallic composite plate is obtained after the other side is naturally cooled. The method sets the regional temperature control and cooling crystallization mode for the preparation of the bimetallic plate, so that the bimetallic composite plate has high density, strength and material consistency.

The utility model relates to a heating disc structure of an electric kettle, which comprises a kettle body and a heating disc which are all made of glass, the heating disc is composed of an aluminum heat conduction disc and a horseshoe-shaped heating tube, and the heating tube is brazed on the bottom surface of the aluminum heat conduction disc. The whole top surface of the aluminum heat conduction disc is flatly arranged, and the top surface is attached to the outer bottom surface of the kettle body; according to the electric kettle, the heating disc is composed of the single-layer high-heat-conduction metal plate, the cost of raw materials is reduced, the brazing procedure of the double-layer structure of the heating disc can be omitted, and the machining cost is reduced to the maximum extent.

The application discloses a cutting and welding integrated device and method for a building steel decorative plate; the application sprays active alloy powder to a welding edge position to strip burr surface oxide scales and embed the powder to form a to-be-welded active layer; the active alloy powder is used to remove the burr surface oxide scales by using powder spraying kinetic energy to expose pure metal and embed the powder in the welding edge position to form a to-be-welded active layer with gradient distribution; in arc discharge, the burr tip forms a stable arc striking channel to avoid arc running away and cause the thin decorative plate to be burnt through; the embedded powder absorbs excess heat energy by phase change latent heat in the molten pool formed by layer-by-layer melting, thereby reducing the polishing process, and the burrs originally belonging to processing waste are converted into self-melting filler; meanwhile, the internal slag inclusion and opening layering defects in the splicing of dissimilar metal composite plates are radically solved, and the welding firmness between the steel decorative plates is improved.