7results about How to "Accurate ingredients" patented technology

The utility model belongs to the field of fertilizer batching, in particular relates to a fertilizer production ground platform batching device, and provides the following scheme aiming at the problems that the existing device cannot realize high-position automatic accurate batching, so that the labor intensity of workers is high, the efficiency is low, the batching precision is difficult to guarantee, and the quality of fertilizer products is influenced. The device comprises a rack, a plurality of conveying belts and a storage box, a plurality of frames are fixedly arranged at the top of the rack, a plurality of funnels are fixedly arranged at the positions, located at the bottoms of the frames, of the rack, and the funnels are communicated with the frames; a stirring mechanism is arranged on the material storage box and is used for stirring and fusing various raw materials. Through the arrangement of the rack, the conveying belt and the storage box, a high-position batching mode is constructed, the labor force is effectively saved, the strength of manual carrying and mixing is reduced, meanwhile, the batching process is more accurate by virtue of stable operation and accurate control of the device, and the production efficiency and the product quality are improved.

The application provides a rare earth-titanium-boron composite vacuum seal welding high-density cored wire and a preparation method thereof, and belongs to the technical field of metallurgical auxiliary materials. The preparation method comprises the following steps: weighing lanthanum-cerium rare earth alloy powder, titanium powder and boron powder for batching, and then uniformly mixing under a protective atmosphere to obtain mixed powder; filling the mixed powder into a low-carbon steel cylinder after pretreatment under a protective atmosphere, and then preliminarily sealing to obtain a composite blank; performing a reduction reaction on the composite blank in hydrogen, and then performing seal welding under a vacuum condition to obtain a composite blank after vacuum seal welding; heating the composite blank after vacuum seal welding, and then performing hot drawing to obtain the cored wire. The cored wire provided by the application realizes stable composite addition of rare earth, titanium and boron with high recovery rate, and significantly improves the structure and performance of 20Mn2 steel and the like, and solves the problems of cold heading cracking, insufficient toughness and aging embrittlement.

The invention discloses an automatic batching device and method for alloy casting, the device comprises a conveying and guiding mechanism and a shearing blade, the conveying and guiding mechanism comprises a baffle ring, a metal wire feeding system and a sleeve, a metal wire sequentially penetrates through the baffle ring, the metal wire feeding system and the sleeve, and the baffle ring has the effect of restraining the movement range of the metal wire; the metal wire can smoothly move forwards, and the sleeve can enable the metal wire to more straightly move forwards, so that the batching precision is improved; the shearing blade is located behind the sleeve and aligned with the wire. According to the invention, accurate, rapid and automatic batching can be realized.

The invention belongs to the technical field of food production and processing, and particularly relates to a precise powder batching device for food production and processing, which comprises a stirring barrel, a sealing cover is mounted at the top of the stirring barrel, a feed hopper communicated with an inner cavity of the stirring barrel is embedded in the top of the sealing cover, a discharge pipe is arranged right below the bottom end of the stirring barrel, and the discharge pipe is connected with the stirring barrel. Supporting plates which are connected with each other are fixedly connected to one side, opposite to the discharging pipe, of the bottom end of the stirring barrel; a stirring mechanism for stirring powder is arranged in the stirring barrel, the stirring mechanism comprises a first motor fixedly mounted at the top of the sealing cover, and the bottom end of an output shaft of the first motor penetrates through the stirring barrel and is fixedly connected with a rotating rod. Furthermore, the effects of further prolonging the powder mixing time and the mutual collision diffusion frequency of different powder materials are achieved, so that the powder materials which are continuously flapped, impacted and rotationally raised are mixed more uniformly.

The utility model relates to a kind of road construction modified asphalt production device, belong to road asphalt equipment technical field, including rack, batching tank, stirring tank, discharge pipe, material conveying pipe, colloid mill, circulation pipe, material conveying pipe another end is connected with finished product delivery pump, the top of batching tank and two stirring tanks are all fixed with matrix asphalt inlet pipe, the top of batching tank is connected with weighing bin, weighing bin is connected with weighing frame by tension sensor, weighing frame is fixed on rack, the upper portion of weighing bin is equipped with screw conveyor, filter is connected between material conveying pipe and colloid mill, filter and circulation pipe are all connected with a section of bellows between colloid mill.The utility model can accurately measure the dosage of modifier by weighing bin and tension sensor, ensure the accuracy of modified asphalt batching;Material is ground by colloid mill and then returns to stirring tank by circulation pipe for cyclic treatment, cooperating with the stirring equipment arranged in stirring tank, the uniformity of material mixing can be significantly improved.

This invention discloses a stepwise thermal control method for improving the process and performance of laser additive manufacturing of nickel-based superalloys. It is based on a dual-laser additive manufacturing process, which includes a first laser and a second laser beam. During the printing process, for each printed layer, the first laser beam is first applied at 20 J / mm². 3 -40 J / mm 3 A low-energy-density laser preheats and partially melts the alloy powder layer on the substrate to optimize its adhesion and improve its stability. A second laser beam at 70 J / mm² is then used. 3 -110 J / mm 3 The high unit volume laser energy density completely melts the alloy powder layer; the alloy powder layer uses nickel-based high-temperature alloy powder. Therefore, this invention can suppress the burn-off of key elements (such as Al, Cr, Nb, etc.) in the alloy powder layer during the melting stage, achieving precise control of component composition and improving surface quality and dimensional accuracy.