49results about How to "Shorten product cycle" patented technology

The invention provides an electric smelting forming method for a nuclear power station pressure vessel shell. The method is efficient and low in cost and has the good mechanical property. The method comprises the steps that an electric smelting head and a base material are connected to two electrodes of a power source, and in the forming process, a metal raw material wire is conveyed to the surface of the base material through a conveying mechanism and the electric smelting head; under accumulation protection of a granular auxiliary material, an electric arc is generated between the raw material wire and the base material, and a molten slag pool is formed by smelting part of the accumulated laid auxiliary material; a current flows through the raw material wire and the molten auxiliary material slag pool to form resistant heat and electric slag heat; under the effect of three composite high-energy heat sources of the electric arc heat, the resistance heat and the electric slag heat, the raw material wire is smelted, and a local smelting pool is formed on the surface of the base material; the raw material wire and the auxiliary material are continuously conveyed; according to hierarchy slicing data of a forming component, a computer is adopted to control relative moving of the electric smelting head and the base material; and the aim that the smelting pool is rapidly cooled on the base material and solidified and stacked layer by layer, and finally the nuclear power station pressure vessel shell is formed is achieved.

An electric melting method for forming a nuclear power plant evaporator cylinder: an electric melting head (6) and a substrate (2) respectively are connected to either electrode of a power source (12), when forming, a raw material wire (1) is fed to a surface of the substrate (2) via a wire feeder mechanism (5) and the electric melting head (6), under the protection of a stack of a granular auxiliary material (3), the raw material wire (1) is molten under the effects of three heat sources, namely electric arc heat, resistance heat, and electroslag heat, a partly molten pool (11) is formed on the surface of the substrate (2), conveyance of the raw material wire (1) and the auxiliary material (3) is continued, a computer is employed to control relative movements of the electric melting head (6) and of the substrate (2) on the basis of layer slicing data of a forming component, rapid cooling and layer-by-layer solidification and deposition of the molten pool (11) on the substrate is implemented, and finally, the nuclear power plant evaporator cylinder is formed. The method is highly efficient and inexpensive. The nuclear power plant evaporator cylinder formed is provided with great mechanical properties.

The invention provides a preparation method of an aluminum-coated magnesium composite rod wire rod. The preparation method comprises the following steps that the surface of a magnesium alloy core material is cleaned, and then is placed in the central position of a crystallizer and is fixedly connected with a traction device; after an aluminum alloy is heated and melted, the aluminum alloy is poured into a casting inner cavity of the crystallizer, aluminum alloy liquid is in contact with the magnesium alloy core material, the aluminum alloy layer is formed by cooling and solidifying the surfaceof the core material, and meanwhile, the traction device is started, and the composite blank is pulled out from the lower part of the crystallizer, so that continuous coating can be realized; the size ratio of the inner diameter of the casting inner cavity of the crystallizer to the inner diameter of the magnesium alloy core material is 1.5-2.3:1; and after the aluminum-coated magnesium compositeblank is heated, continuous multi-pass rolling is carried out, and the aluminum-clad magnesium composite bar materials with different section sizes and section shapes are prepared by adjusting the rolling pass and the shape of rolling holes. The material has good tissue performance, and is low in cost, high in efficiency and wide in applicability.

The invention discloses a method of eliminating skin wrinkles of a large surface based on a gradient gap die and belongs to the field of techniques of removing skin formation wrinkles. Batch production of high-quality skin can be implemented herein by optimally designing die gaps and manufacturing; the method herein is applicable to the formation of skin parts of various high-intensity materials,particularly manufacturing of titanium alloy skin parts; pressure-pressure stress state is a main cause to wrinkling; gaps are reasonably designed, gradient frictional resistance is utilized to form acontrollable resistance field, and therefore, mobility during plate forming process is limited, the pressure-pressure stress state in plates is reduced, wrinkle removal is achieved, and high-qualityparts with corrugation meeting technical requirements are met. The method herein may be used as a new method to eliminate wrinkles in thermal formation of titanium alloy large-surface skin so as to obtain high-quality parts.