2results about How to "Improve sintering stability" patented technology

The invention discloses a carbon ceramic closing resistor for a high-voltage circuit breaker and a preparation method of the carbon ceramic closing resistor, and belongs to the technical field of power elements. The problems of poor resistor compactness, non-uniform performance, insufficient mechanical property and the like caused by high pressing and sintering difficulty, process instability and high and non-uniform resistor porosity of the carbon ceramic resistor are solved. The preparation process of the resistor comprises the following steps: by taking aluminum oxide and quartz as ceramic phases, presintered kaolin, mullite and potassium feldspar as clay phases and carbon black or graphite as conductive phases, pre-coating the ceramic phases with the clay phases, carrying out vacuum calcination on pre-coated powder, mixing the pre-coated powder with the secondarily added clay phases and the conductive phases, carrying out spray granulation, pressing a green body, sintering and spraying. And obtaining the carbon ceramic closing resistor. According to the invention, the kaolin is pre-sintered, and the clay phase is pre-coated with the ceramic phase, so that the subsequent blank pressing uniformity and density are increased, the structural defects of the carbon ceramic resistor are reduced, and in combination with the spark plasma sintering technology, the batch rapid production of the resistor can be realized.

The utility model relates to the green body sintering support technical field, specifically disclose green body anti -deformation support's vertical sintering support, including the protection frame, it includes protection frame body and sets up a plurality of placing groove in protection frame body, sets up the closed structure at protection frame body opening, lock catch structure is used for fixing closed structure at protection frame body opening, placing frame sets up in protection frame body, and it includes placing frame body and sets up a plurality of limit rods at placing frame body top, limit rod both sides are equipped with limit slot, limit rod both ends are connected extension block, the whole in the utility model adopts vertical design, and placing frame is easy to place into protection frame body, and can choose the placing frame of different layers according to green body height, and the cooperation of placing mould and placing frame can support and hang in the air to green body, improve sintering stability, the distance between limit rod on placing frame is adjustable, and can adapt different placing mould according to sintering green body.