3results about How to "Guaranteed final performance" patented technology

The invention belongs to the technical field of metal materials and powder metallurgy, and discloses a preparation method of a TiB2 enhanced AlCoCrFeNi high-entropy alloy, which comprises the following steps: S1, weighing raw materials: weighing Al, Co, Cr, Fe and Ni metal powder according to an equal atomic ratio, and weighing TiB2 powder which accounts for 5-20% of the total mass of the Al, Co, Cr, Fe and Ni metal powder; s2, mechanical alloying machining is conducted, specifically, Al, Co, Cr, Fe and Ni metal powder and TiB2 powder are mixed and then subjected to high-energy ball milling machining, and composite powder is obtained; s3, molding processing: drying and sieving the composite powder in the S2, and loading the composite powder into a mold for cold press molding to obtain a green body; and S4, atmosphere protection sintering is conducted, specifically, the green body is placed in sintering equipment under inert atmosphere protection to be sintered, and the TiB2 reinforced AlCoCrFeNi high-entropy alloy is obtained. According to the preparation method, high-dispersion distribution of TiB2 particles in alloy powder is achieved through high-energy ball milling, and a bulk material which is uniform in structure and high in density is obtained in cooperation with a sintering process.

The present application relates to mechanical assembly technical field, specifically, a kind of umbrella hoisting device and the hoisting method of gear hub type parts.The device includes: middle pole, multiple pin holes are provided on it along the axial direction;Ring is arranged on the top of middle pole;Movable hinge base is arranged on middle pole through sliding sleeve;Pin is arranged in sliding sleeve and cooperates with selected pin hole;Fixed hinge base is arranged on the bottom of middle pole;Multiple claw pole upper part is hinged with movable hinge base, and lower end is bent to form support claw;Multiple connecting rod two ends are respectively hinged with fixed hinge base and corresponding claw pole middle lower part;Pressing assembly is arranged on each claw pole and located above support claw.Movable hinge base moves relative to middle pole axial direction, and claw pole is driven to fold or unfold by connecting rod.The present application realizes axial two-way clamping to gear hub type parts annular boss by support claw and pressing assembly, avoids damaging internal tooth surface, has the advantages of compact structure, convenient operation, strong adaptability, hoisting stable and reliable.

The utility model discloses a batching device for producing a polycarboxylate superplasticizer, belongs to the technical field of concrete auxiliary materials, and aims to solve the technical problem of poor mixing effect of a batching device in the prior art. The polycarboxylate superplasticizer production batching device comprises a reaction kettle, a partition plate is arranged in the middle of the interior of the reaction kettle, the interior space of the reaction kettle is divided into an upper cavity and a lower cavity by the partition plate, the cavity above the partition plate is a premixing cavity, the cavity below the partition plate is a secondary mixing cavity, and a stirring mechanism is assembled in the premixing cavity; a discharging opening is formed in the position, close to the inner wall of the reaction kettle, of the partition plate, the discharging opening is communicated with the premixing cavity and the secondary mixing cavity, a valve is assembled in the discharging opening, and a material guide plate is arranged in the secondary mixing cavity. The batching device for producing the polycarboxylate superplasticizer has a secondary mixing function, ensures that raw materials are uniformly distributed and fully fused, greatly improves the mixing and preparing effect of the polycarboxylate superplasticizer, and ensures the final performance of the polycarboxylate superplasticizer.