68 results about "Machining process" patented technology

The invention belongs to the technical field of structural engineering, and particularly relates to a heat-preservation wall body for a mixed structure of a wood frame and a wooden shear wall, and assembly technology. The assembled heat-preservation wall body consists of wall studs, a wood base structural slab, a gypsum board, heat-preservation cotton, a wood-frame pillar, a mudsill board and a top beam board, wherein a horizontal interval between every two adjacent wall studs is 400 to 600 millimeters, and the wall studs on both sides are connected with the wood-frame pillar through nails; the wood base structural slab covers the wall body, is connected with the wall studs, the top beam board and the mudsill board through the nails, and is flush with the outer side of the wood-frame pillar; the gypsum board is covered on the inner side of a wallboard and is connected with the wall studs through screws; and the heat-preservation cotton is filled between inner and outer cladding boards. Materials for the assembled wall body provided by the invention can improve the natural environment in the process of growth, have the advantages of low energy consumption in the machining process, regeneration and natural degradation after abandonment, and have the functions of quick construction, vibration prevention, energy conservation, heat preservation, heat insulation and the like; the heat-preservation wall body has the advantages of high industrial production degree, high production efficiency, less on-site wet operation, a plurality of operational surfaces and quick construction; and the materials, such as dimension stocks, connectors, plywood, laminated wood and the like can be localized to reduce the construction cost.

The invention discloses a processing technology of a metal face frame of a liquid crystal television, and the processing technology comprises a processing procedure of folding edges and a processing procedure of ambient round angles. The processing technology is characterized in that an aluminum sheet with a cut in the middle is fixed between a concave pattern plate and a fixing plate in the processing procedure of folding edges, wherein the edge of a concave pattern cavity of the concave pattern plate is added with a ring of pressed rib pressed into the aluminum sheet, and the inner edge of the aluminum sheet is pressed by a convex pattern plate to form the folding edge; in the processing procedure of ambient round angles, three pairs of concave-convex pattern insert block components are adopted to bend, punch and shape the four round angles at the connecting places of the four straight edges on the folding edges in three steps, and the radiuses of the arc surfaces on the three convex pattern insert blocks of the concave-convex pattern insert block components are decreased sequentially. The processing technology of the invention can press the folding edges with smaller round angle radius and the four round angles at the connecting places of the four straight edges on the folding edges, and effectively prevent rupture at the four round angles in the processing course, which improves the product quality greatly.

The invention relates to the technical field of metal materials and provides a superconducting niobium pipe and a preparation method thereof. The preparation method comprises the specific steps of: forging superconducting niobium ingots, wherein the temperature during a forging process is lower than or equal to 60 DEG C; carrying out first thermal treatment on the forged superconducting niobium ingots; coating a lubricating agent on the surfaces of the superconducting niobium ingots after the first thermal treatment, and carrying out reverse extrusion; and carrying out secondary thermal treatment on the superconducting niobium ingots after the reverse extrusion, so as to obtain the superconducting niobium pipe. According to the superconducting niobium pipe and the preparation method thereof, the forging temperature is controlled in a forging process, and the lubricating agent is coated on the surfaces of the niobium ingots in an extrusion process, so that the carbon absorption, the hydrogen absorption and the oxygen absorption of the niobium ingots in a machining process are effectively avoided, and the decreasing amplitude of the residual resistivity of the prepared superconducting niobium pipe is relatively small.

The invention discloses a method of preparing high-strength heat conducting graphite flakes with flow guiding and heat conducting functions. The method includes the steps of raw material preparing, pre-crushing, pre-screening, deironing, secondary crushing, secondary screening, mixing, profiling and heating, graphitizing at high temperature, back film preparing, heat conducting tank pressing and cutting. The machining process is scientific and reasonable in step, the machining process in the prior art is improved, the raw material is processed in a refined mode, the granularity of the graphite flakes is more uniform, the qualification rate of the finished product is increased, and electrical conductivity and heat conductivity of the heat conducting graphite flakes are improved; by means of the process, the chemical stability of the graphite flakes can be improved, thermal expansion is reduced, and the graphite flakes are easy to machine and shape.

The invention relates to a machining method and special device for vehicle aluminum alloy heat exchange water tank radiator pipe. It puts the machining radiator pipe between two rollers of special device, which has flux on the surface. The flux would coat equally onto the surface of radiator pipe. The special device includes upper roller and down roller. The down part of driving upper roller drainage wheel and down roller is dipped in stock solution slot containing flux solution. The invention decreases a machining process, shortens machining time, improves producing efficiency, and decreases pollution to environment. The defective fraction of using the method could be under 0.3%. And the surface of the product is smoothing and bright.