7 results about "Semi-formed" patented technology

The utility model relates to the technical field of pipeline production, in particular to a color strip pipe extrusion production tool which comprises a shell body, the interior of the shell body is hollow, a core body is sleeved on the shell body, a gap between the shell body and the core body forms a flow channel for outputting and forming conventional pipe materials, and a bent flow guide channel is arranged on the side wall of the shell body. The flow guide groove is formed in the front end of the shell body and sealed through the shell pressing plate, and the color pipe materials are conveyed into the flow guide groove through the flow guide channel to be collected, output into the flow channel through the notch in the inner side of the flow guide groove and attached to the two sides of the semi-formed material pipe, so that the color pipe materials and the material pipe are formed together, and the control force on color material lines on the outer wall of the material pipe is increased; and the mistake proofing requirement of a customer is met to the greatest extent while the efficient production of the material pipe is ensured.

This utility model relates to the field of automotive seat air-conditioning front backrest technology, specifically to a semi-sewn, semi-formed fabric applied to automotive seats. The automotive seats have complex and flat shaped areas. The semi-sewn, semi-formed fabric includes a formed fabric body and a sewn fabric body. The formed fabric body covers the complex shaped areas of the product body; the sewn fabric body covers the flat shaped areas of the product body; the formed fabric body and the sewn fabric body are fixedly connected to form an integrated structure. By clearly defining the formed fabric body for curved surfaces, irregular contours, or concave-convex structures, the fit between the product body and the seat foam is improved, ensuring the stability and sealing of the structure around the functional holes, avoiding poor ventilation due to deformation of the sewn product. This solves the technical problem that the non-woven fabric structure of the air-conditioning front backrest is generally based on flat fabric, which lacks three-dimensional forming ability. When covering complex shaped areas, it is prone to wrinkles, uneven stretching, or poor fit, leading to unstable ventilation.

The invention discloses a point switch friction material and a preparation method and application thereof, and belongs to the technical field of rail transit point switch friction materials, the preparation method comprises the following steps: adding resin, a functional filler, a lubricant, a stabilizer and rubber into a crushed fiber reinforcement, and stirring and mixing to obtain a mixture; carrying out hot-pressing curing to obtain a semi-formed material; and carrying out curing treatment to obtain the friction material of the switch machine. The fiber-reinforced resin-based composite friction material is prepared by optimizing the mass ratio of the resin, the fiber reinforcement body and other components and adopting specific hot-pressing curing and step-by-step heat preservation curing processes, and the dynamic friction coefficient of the fiber-reinforced resin-based composite friction material is 0.3-0.4; the problems that an existing switch machine copper-based friction material is large in abrasion, unstable in output torque, abnormal in sound and complex in speed reducer assembly process are effectively solved, and meanwhile the application field of the composite friction material is expanded. The friction material of the switch machine is promoted to be converted from copper-based powder metallurgy to fiber-reinforced resin-based composite, and the reliability development of a railway signal system is assisted.

The application discloses a kind of annular forgings forging process method, belongs to annular forgings forging technical field, and its technical scheme main points are as follows: a. blanking: raw material is detected after passing, is input heating furnace and is heated;B. pre-forging: the billet after heating is laid on the forging die and is flattened, and pre-forging cavity is set on the forging die, the billet after flattening is placed in pre-forging cavity and is pre-forged, and preliminary forging is formed;C. punching: after pre-forging, annular forgings is placed to composite die and is punched, and after removing the metal of the part in the middle of the skin, it is heated in the furnace;D. final forging: after heating in the furnace, annular forgings is placed in final forging cavity on the forging die and is finally forged;E. edge cutting: after final forging, composite die is used to cut the edge of the forging;F. sand blasting and polishing: the billet after final forging is sand blasted and polished.The scheme can realize the semi-forming of forging, shorten the production cycle, improve the production efficiency and have high quality.

The invention discloses a preparation method of a high-strength and high-toughness aluminum nitride ceramic substrate. The preparation method comprises the following steps: step 1, premixing an additive; step 2, adding raw material powder and premixing; step 3, preparing the raw material mixture into a flaky raw material mixture; step 4, preparing a semi-formed green body; and step 5, taking out the semi-formed green body from the box-type furnace, putting the semi-formed green body into another horizontal furnace, heating the semi-formed green body in a micro-negative-pressure nitrogen environment at the temperature of 1300-1600 DEG C for 13 hours, carrying out decarburization treatment to obtain a semi-formed sheet, and then carrying out heat treatment and sintering on the semi-formed sheet in the same horizontal furnace at the temperature of 1700-1800 DEG C in nitrogen with one atmospheric pressure for 5 hours to obtain the semi-formed sheet. The sintered aluminum nitride ceramic substrate is obtained; and 6, carrying out post-section surface treatment on the aluminum nitride ceramic substrate to obtain a finished product. According to the invention, the composite additive of the zirconium oxide powder and the silicon nitride whisker powder is combined with degreasing and decarburization treatment in a nitrogen atmosphere, so that the composite additive has a remarkable effect on realizing high strength, high toughness and high thermal conductivity.

The invention relates to the technical field of composite materials, and particularly discloses a manufacturing method and a nondestructive testing method for out-of-plane wrinkles of a composite material. The manufacturing method of the composite material out-of-plane wrinkles comprises the following steps that a plurality of laying layers are stacked on a wrinkle forming tool with a groove, and a semi-formed piece with a protruding part is formed through vacuum compaction and solidification; and the other side, opposite to the protruding part, of the semi-formed part is placed on a supporting tool, a plurality of laying layers are stacked on the side, provided with the protruding part, of the semi-formed part, and a test piece with out-of-plane simulation wrinkles is formed through vacuum compaction curing. According to the method, an external support for deforming fibers is not introduced, so that the formed out-of-plane simulated wrinkles are closer to real out-of-plane wrinkle defects, the simulation effect is relatively good, the surface flatness is good, effective simulation of the out-of-plane wrinkle defects in the fiber composite material is realized, and during subsequent nondestructive testing, the defect of the out-of-plane wrinkle in the fiber composite material can be effectively overcome. And interference on detection signals caused by redundant supports is avoided.

The invention discloses a production method of a high-moisture-proof and waterproof ball table plate. The production method comprises the following steps: obtaining wood fibers; wood fibers, a binder and a waterproof agent are mixed and preliminarily dried, and a mixture is obtained; paving and hot-pressing the mixture to obtain a semi-formed plate; and the semi-formed plate is maintained and polished, and the ball table plate is obtained. The semi-formed plate is obtained through hot pressing of the wood fibers, the binder and the waterproof plate, then the ball table plate is obtained through maintenance and polishing, the obtained ball table plate is good in waterproof performance and can be completely used outdoors, and even if protection of an outer protection layer outside the ball table plate is lost in the using process, the ball table plate cannot be damaged. And the use performance of the table board is basically not influenced.