40results about How to "Guaranteed composite quality" patented technology

The invention relates to equipment for manufacturing a composite steel ingot. The equipment comprises a conductive crystallizer which is a barrel-shaped structure provided with an upper opening, a lower opening and a first diameter and a consumable electrode component comprising multiple consumable electrodes and a first power which is electrically connected with the consumable electrode component; the multiple consumable electrodes extend into the barrel-shaped structure from an upper opening of the conductive crystallizer and is a first distance away from an inner circumferential surface of the barrel-shaped structure; and the first distance is smaller than half of the first diameter. The invention further provides a method for manufacturing the composite steel ingot which comprises the steps that the consumable electrodes are inserted in slags; a power supply loop of the conductive crystallizer is conducted to realize composition of a core rod and outer-layer molten steel; and good match of the melting speed of the consumable electrodes and ingot drawing speed is realized through a liquid level detector so as to ensure stability of the steel ingot composition process. By adopting the equipment and method, manufacture of the large steel ingot can be realized; stable and orderly operation of the multi-layer composition process is ensured; problems of segregation, loosening and shrinkage cavities of the large-sized steel ingot are solved; and meanwhile, production efficiency is improved, and composition quality is ensured.

The invention discloses a spinning and clamping device of a spinning composite machine, aiming to solve the problems that feeding of a spinning shaft is instable in composite pipe processing, and elastic deformation of an outer pipe and plastic deformation of an inner pipe are directly affected by clamping force. A plurality of movable lifting sockets are adopted to reduce length of a cantilever of a spinning rod inside the spinning composite machine; when a spinning head passes a clamped position during spinning, a travel switch automatically opens a clamping device so that the inner and outer pipes can be clamped once again after being fully deformed. By the arrangement, feed travel can be kept stable during the spinning, the elastic deformation of the outer pipe and the plastic deformation of the inner pipe are unaffected by the clamping force, and composite quality of the inner and outer pipes can be guaranteed.

The invention belongs to a preparation method of a carbon nano tube reinforcement material and relates to a carbon nano tube non-woven fabric without a surfactant and solvent residue and the preparation method of the carbon nano tube non-woven fabric. The preparation method comprises the steps: mixing a carbon nano tube and the surfactant in solvent according to a certain ratio to prepare a carbon nano tube dispersing agent; preparing the carbon nano tube non-woven fabric by adopting a vacuum or pressure-assisted solution deposition method; carrying out high-temperature anoxic treatment on the obtained carbon nano tube non-woven fabric; and removing the surfactant and the solvent left in a preparation process to obtain the carbon nano tube non-woven fabric without the surfactant and the solvent residue. According to the preparation method disclosed by the invention, the residual surfactant and solvent molecules in the preparation process of the carbon nano tube non-woven fabric are completely removed when the structure of the carbon nano tube is not damaged and the structural integrity of the carbon nano tube non-woven fabric is kept through high-temperature anoxic treatment, so that the infiltrating effect of a resin matrix on the carbon nano tube non-woven fabric and the interface binding ability of the carbon nano tube and the resin matrix are improved.

The invention discloses a composite aluminum foil packing material of pearl wool. The composite aluminum foil packing material of pearl wool is prepared by curtain-coating and compounding a coating layer formed by pearl wool and an aluminum foil cast with a thickness of 15-40mum under temperatures 240 DEG C, 260 DEG C and 280 DEG C. An upper layer is the aluminum foil and a lower layer is the pearl wool. A coating material of the coating layer is a mixture of an adhesive and low-density polyethylene resin particles. The coating layer contains 30-45wt% of low-density polyethylene resin particles. The price of the low-density polyethylene resin particle is lower than that of the adhesive, so that the production cost of the composite aluminum foil packing material is reduced while the compound quality of the pearl wool and the aluminum foil is ensured.