4results 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 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%.