5results about How to "Reduce post-processing steps" patented technology

The utility model provides a kind of for special-shaped vacuum bag of special-shaped mould, the special-shaped mould includes the mould cavity of trapezoidal cross section;The special-shaped vacuum bag is set on the mould cavity and seals the mould cavity;The cross-sectional shape of the special-shaped vacuum bag includes the main body structure of convex letter shape, and the main body structure includes sequentially arranged from top to bottom center protruding portion, lateral recess portion and base portion.The special-shaped vacuum bag provided by the utility model can meet the requirement of air tightness and vacuum keeping when applied to special-shaped mould, ensure the forming quality of composite material, avoid bubble, void and other problems.

The invention provides a non-ferrous metal solid hazardous waste material and flux mixed block making device, and relates to the field of metal solid hazardous waste treatment. The production device of the metal solid hazardous waste material and flux mixing block comprises a multi-stage stirring mechanism and a primary stirring mechanism for mixing wet aggregate particles and total amount of reagent powder, and the primary stirring mechanism comprises a material inlet and outlet, a liquid outlet, a water spraying part for flushing residual reagent powder and a stirring unit for stirring. According to the blocky object prepared by the non-ferrous metal solid hazardous waste material and flux mixed block making device, the foamed metal solid hazardous waste material and flux mixed block is fixed in shape and convenient to transport, aggregate and a reagent are uniformly mixed, and later steps are reduced; particularly, gaps are formed on the surface after foaming treatment to increase the contact area, and the specific surface area is also increased after the shape is fixed to facilitate reaction with other materials, so that the problem of low waste residue feeding treatment efficiency in the prior art is solved.

The utility model relates to the technical field of welding, in particular to a resistance welding electrode assembly which comprises a first electrode and a second electrode, the first electrode comprises a first electrode body and a first electrode cap, and the second electrode comprises a second electrode body and a second electrode cap. The second electrode cap is provided with a second end face, and the diameter of the first end face is larger than that of the second end face. Through accurate heat distribution, the welding parameter adjusting frequency is reduced, long-time stable welding is achieved, the production takt time can be effectively shortened, the comprehensive manufacturing cost is reduced, and the requirement of industrial production for efficient and stable welding is met.

The application relates to the technical field of casting molds and forming processes, in particular to a low-pressure casting mold for a magnetic suspension compressor shell and a use method thereof. The mold comprises a bottom mold and three opening and closing molds matched with the bottom mold; the bottom mold and the three opening and closing molds are combined with a sand core to form a casting blank cavity of the magnetic suspension compressor shell, the blank cavity is in a horizontal layout and only one sprue is arranged at a cylindrical outer center position of the blank cavity; the mold further comprises a point cooling mechanism, the point cooling mechanism comprises a plurality of interval-arranged point cooling units, the point cooling units are arranged at each slow cooling point position close to the casting and away from the sprue and at a local thick position of the casting, each point cooling unit is respectively connected with cooling liquid, each cooling position is cooled through the cooling liquid, and the metal liquid realizes sequential solidification from top to bottom and from both ends to the center after entering the blank cavity. The sequential solidification is realized through the multi-point cooling, and the forming quality and process yield of the magnetic suspension compressor shell are improved.

The invention discloses a preparation method of high-quality anhydrous sodium acetate. Comprising the following steps: dropwise adding alkali liquor into acetic acid or an acetic acid solution in a stirring state to obtain a sodium acetate solution, and preparing anhydrous sodium acetate from the sodium acetate solution by using a spray dryer. The sodium acetate solution is directly subjected to spray drying by using the spray dryer, the solution does not need to be concentrated, crystallized and dried, the operation steps are reduced, the process is simple, the yield is high, and the cost is low. The water content of the prepared sodium acetate powder is less than 1.0%, the sodium acetate content is greater than or equal to 99.0%, and the yield is greater than or equal to 98.5%.