17 results about "Necking" patented technology

The invention discloses a preparation method of a cyclic reducing high-performance external gradient structure aluminum magnesium alloy pipe blank, and belongs to the technical field of metal plastic processing, the method adopts a cyclic reducing die, and a male die sliding plate vertically descends in a single time to drive a sliding assembly to do horizontal reciprocating motion, so that the pipe blank is subjected to multiple times of diameter expansion-necking circulation. In the expanding stage, the die core and the female die box body are matched to expand the outer diameter of the pipe blank; in the necking-down stage, metal flows directionally under the guidance of a back pressure cavity, large plastic strain is accumulated on the outer side of the pipe wall to achieve grain refinement, strain capacity on the inner side is decreased progressively, an outer gradient structure is formed, and the pipe blank can be subjected to the diameter expanding stage again through vertical upward reset of the male die sliding plate. According to the scheme, geometric forming and external gradient structure construction are synchronously completed in single-pass machining, the forming precision is high, gradient controllability is high, external fine grains of the prepared pipe are resistant to abrasion, internal coarse grains of the prepared pipe are good in toughness, the pipe is suitable for the high-end fields such as aerospace, the mold universality and maintainability are excellent, and the production efficiency is greatly improved.

The utility model relates to a terminal sleeve forming machine which mainly comprises a first sleeve distributing device, a pinch roller device, a second sleeve distributing device, a material pipe separating device, a material pipe hot pressing device, a material pipe clamping device and a heating device. One-time operation of a plurality of plastic sleeves is achieved through the first sleeve distributing device, the pressing wheel device, the second sleeve distributing device, the material pipe separating device and the material pipe clamping device, the distance can be fixed, manufacturing is facilitated, and the material pipe hot-pressing device and the heating device can conduct pipe body plastic pressing groove and necking on the cylindrical plastic sleeves. Therefore, the plastic sleeve which completes the plastic compression of the groove and the necking can achieve the effects of fixing the position of the terminal and protecting the terminal from being separated.

The invention relates to the technical field of material test, in particular to a high-temperature tensile sample deformation modeling method, which comprises the following steps of: comparing the lengths of a round rod-shaped sample before and after tensile fracture to find out the original length of the part, participating in deformation, of the sample before deformation; the outer surface of the sample presents a certain taper and is regarded as a curved surface formed by rotating a curve corresponding to a quadratic function around a symmetric axis of the curve, which corresponds to the continuous change of the section diameter of the necking area along with stretching in a high-temperature state of the sample; according to the rule that the volume of the part, participating in deformation, of the sample is not changed before and after deformation, a function relation between the tensile deformation amount and the section radius of the necking area is found, a deformation model of the sample in the high-temperature tensile state is accurately described, and a foundation is laid for judging the high-temperature mechanical property of the material. And a reliable basis is provided for contents such as crack generation and rolling force prediction in the continuous casting process.

The application relates to a necking square flowmeter water distributor and relates to the technical field of pipeline water supply equipment. The square part of the water inlet main pipe and the water return main pipe is formed by high compression necking of a stainless steel round pipe through a special die. The pipe wall is uniform, not thinned, free of hidden crack dangers, higher in pressure resistance, higher in safety, and low in processing cost. The two ends of the main pipe body are provided with mounting heads, the mounting heads are fixedly provided with connecting end heads; the two ends of the main pipe are provided with threaded ports for connecting a heating system, the threaded ports are not turned on the main pipe wall, but are separately processed by thickening pipe fittings, and are then fixed on the end portions of the main pipe through welding; the outer wall and the mounting head are connected through welding, the thickness of the pipe wall at the two ends of the water inlet main pipe and the water return main pipe is guaranteed, the strength of the two ends of the water inlet main pipe and the water return main pipe is improved, the threads at the two ends of the water inlet main pipe and the water return main pipe are thick and strong, the strength is high, the through-stop gauge requirement is fully met, the torsional performance is excellent, and the threads are not easy to slip and break.

The application discloses a method for predicting and evaluating the overall formability and local formability of high-strength steel. u The uniaxial tensile test is carried out, and the strain is uniformly distributed before the material reaches the tensile strength or necking instability, which reflects the overall formability of the material. The effective strain range with the necking as the center is about 20 mm, the thickness-based fracture strain of a sample with a complete fracture is determined as the evaluation index of the local formability. The method can well predict and evaluate the overall formability and local formability of advanced high-strength steel, and has the advantages of simple operation, reliable result, wide application range and low cost.

The utility model discloses a thin-wall metal pipe necking die and a thin-wall metal pipe necking device adopting the same, the thin-wall metal pipe necking die comprises a rotary lifting mechanism, a thin-wall metal pipe necking die and a clamp, the thin-wall metal pipe necking die comprises a sleeve, a necking assembly and a lubricating assembly, the necking assembly comprises a necking mandrel and a necking threading die, and the lubricating assembly is arranged on the sleeve. When the thin-wall metal pipe is necked down, the clamp clamps the lower end of the thin-wall metal pipe, the rotary lifting mechanism drives the necking die to rotate and move downwards, the upper end of the thin-wall metal pipe enters a gap between the threading die forming part and the mandrel forming part, the upper end of the thin-wall metal pipe is deformed and the pipe diameter is reduced under the rotary extrusion action of the necking die, and a necking part is formed and becomes a reducer pipe. The necked thin-wall metal pipe belongs to the same component and is free of welding seams, the reducing requirement in a pipeline system can be met without introducing a new reducing pipe, welding seams of the pipeline system are effectively reduced, the phenomena of running, emitting, dripping and leaking of the pipeline system are reduced, and the stability and reliability of the pipeline system are improved.

The utility model relates to steel pipe processing equipment technical field provides a seamless steel pipe necking mechanism, including base and locate on the base's feeding unit, necking unit, blanking unit and positioning unit, positioning unit includes locating plate, limit stop and first lift cylinder, and the locating groove that places for steel pipe is set up on locating plate, and locating plate and limit stop cooperate and fix steel pipe, feeding unit can convey steel pipe to locating groove, blanking unit is located between two locating plates for moving out steel pipe in locating groove from locating groove, one side of locating plate is connected with baffle, and the end of baffle can insert into the feeding of blocking steel pipe in feeding unit, the utility model discloses can realize the full automation of steel pipe necking, and necking efficiency is high.

1. The name of the design product: pot body stamping production line. 2. The use of the design product: for miscellaneous pot necking, winding, flanging, bottom buckling, paper buckling processing. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

The utility model discloses a concrete slump testing cylinder, which comprises a slump cylinder, a plurality of hydraulic cylinders, a plurality of hydraulic cylinders, a plurality of hydraulic cylinders, a plurality of hydraulic cylinders and a plurality of hydraulic cylinders, the funnel is detachably arranged at the upper end of the slump cylinder; the sliding rail is arranged on the side wall of the slump cylinder in the generatrix direction of the slump cylinder, and scale marks are arranged on the sliding rail; the sliding block is connected to the sliding rail in a sliding manner; and the cross rod is horizontally arranged on the sliding rail. Compared with the prior art, the concrete slump tester has the following advantages and effects that the sliding block which is in sliding connection is arranged and drives the transverse rod to move synchronously, so that the transverse rod can be automatically arranged on concrete in a cross-arm manner, the slump value can be quickly and accurately read by observing the scale marks on the sliding block and the sliding rail, other tools do not need to be carried and used, and the test convenience is improved.

The utility model discloses a plastic cup which comprises a cup bottom, the edge of the cup bottom is connected with a connecting ring, the upper side of the connecting ring is necked down, the upper side of the connecting ring is connected with a star-shaped bottom plate, the upper side of the star-shaped bottom plate is connected with a cup wall structure, and the cup wall structure comprises a plurality of first folding faces connected with the star-shaped bottom plate. A short concave edge is arranged at the intersection position of the first folding face, an arc connecting face is connected between the short concave edge and the upper side of the first folding face, through the arrangement of the reinforcing ribs, the first folding face, the second folding face and the top arc face, the strength of the cup wall structure can be enhanced, and the cup is not prone to deformation when being picked up; due to the arrangement of the short concave edge, the long convex edge and the long concave edge, friction between the hand and the cup wall structure can be increased, and therefore the cup can be conveniently taken up; in addition, the strength of the cup bottom can be enhanced by arranging the reinforcing convex part, the connecting ring, the convex rib part and the concave surface part.

The invention discloses a pipe fitting necking device which comprises a base plate, a feeding mechanism and an upper clamping piece are installed on the base plate, a longitudinal moving mechanism is installed on the feeding mechanism, the longitudinal moving mechanism is in driving connection with a mounting plate, a material taking mechanism is installed on the mounting plate, and a necking assembly and an inner supporting assembly are installed on the left side and the right side of the upper clamping piece correspondingly. The necking assembly comprises a second linear driver arranged on the upper clamping piece, the second linear driver is in driving connection with a necking piece, the inner supporting assembly comprises a third linear driver arranged on the upper clamping piece, the third linear driver is in driving connection with a core rod, and the material taking mechanism comprises two fixing bases and a moving base located between the two fixing bases. And lower clamping pieces are mounted on the fixed seat and the movable seat.

The utility model relates to the technical field of coating equipment, in particular to a coating machine which comprises a shell, a coating box and a drying assembly, the coating box is arranged at the bottom of the shell, a coating nozzle is arranged above the coating box, an extrusion opening is formed above the coating nozzle, a movable block is arranged on the inner side of the coating box, a first necking opening is formed in the bottom of one side of the coating box, and a second necking opening is formed in the bottom of the other side of the coating box. Second necks are formed in the two sides of one end of the coating box, a material barrel is arranged on one side of the shell, and a conveying pump is arranged on one side of the material barrel. Through the arrangement of the first necking and the second necking, the sectional area of one end of the coating box is smaller than the sectional area of the other end of the coating box, so that pressure is generated when materials flow in the coating box, and the pressure promotes part of the materials to flow towards the coating nozzle during flowing and leave the coating box from the extrusion opening for coating; and the movable block moves upwards and seals the extrusion opening, and the material still keeps flowing in the coating box before, so that the material is prevented from being solidified due to easy stopping of flowing.

The invention discloses a method for adjusting the necking amount of strip steel in the continuous annealing process. The method comprises the following steps of: constructing a transverse discrete model of strip steel between a single pair of furnace rollers; collecting field production data of a continuous annealing unit and typical parameters of furnace rollers in a current unit furnace; establishing a necking amount calculation model of the strip steel at a continuous annealing section; defining characteristic parameters in the necking amount calculation model; and the strip steel necking amount needed by the strip steel in the continuous annealing stage is obtained. According to the method, the strip steel necking amount required by the strip steel in the continuous annealing stage can be accurately calculated and obtained, the necking condition of the strip steel is rapidly and effectively adjusted, the strip steel width is controlled before edge cutting, and extra cost caused by the fact that the strip steel width does not reach the standard is reduced.

The utility model belongs to the technical field of plastic and metal composite pipe processing, and discloses a metal pipe connecting pipe structure for plastic lining metal pipe processing, which comprises at least two thin-wall metal pipes, a reducing section is integrally formed at one end of each thin-wall metal pipe, and a necking chamfer is formed between the reducing section and the thin-wall metal pipe. An inner chamfer matched with the necking chamfer is formed at the other end of the thin-wall metal tube; and in a connection state, the reducing section of the thin-wall metal pipe is inserted into one end, with the inner chamfer, of the adjacent thin-wall metal pipe, and the corresponding reducing chamfers of the two adjacent thin-wall metal pipes are attached to the inner chamfers. The connecting pipe section can be directly retained in the finished plastic lining metal pipe, so that the waste of waste treatment caused by abandoning the connecting pipe section is avoided; the thin-wall metal pipe can be used according to the length of a finished pipe; and the length of a finished pipe can be freely cut.

The utility model discloses a necking device for assembling a copper bracket, and relates to the technical field of automatic equipment. Comprising a necking device body, the necking device body comprises a vibration material disc, a straight vibration feeder, a material pushing air cylinder, a carrying mechanism and a necking assembly, the straight vibration feeder is located between the vibration material disc and the material pushing air cylinder, and the carrying mechanism is used for carrying workpieces to be machined on the material pushing air cylinder to the necking assembly. The vibration material disc, the straight vibration feeder and the material pushing air cylinder are matched to achieve automatic arrangement and conveying of workpieces, manual intervention is reduced, the carrying mechanism accurately grabs and transfers the workpieces through negative pressure adsorption, positioning deviation is avoided, three necking sliding blocks at equal intervals are adopted to be matched with an arc-shaped driving groove, a port of a copper bracket is synchronously extruded under driving of a translation necking air cylinder, and therefore the copper bracket can be automatically arranged and conveyed. And the clamping jaw air cylinder fixes the copper bracket workpiece, coaxial positioning is combined with the fixed guide plate, the machining stability is guaranteed, the requirements of precision parts are met, and the machining efficiency is guaranteed.

The utility model discloses an integrated Y-shaped pile structure of a greenhouse, and belongs to the technical field of agricultural greenhouse construction. The structure comprises a Y-shaped pile main body, a cross-shaped necking and a spiral sheet. The Y-shaped pile body is composed of a straight rod, a V-shaped support and a V-shaped rod, the V-shaped support is fixed to the top of the straight rod, the two ends of the V-shaped rod are connected with the V-shaped support at the top of the straight rod, and a cross rod support is arranged below the middle of the V-shaped rod. The length of the straight rod is 120 mm, and a cross-shaped necking opening with the length of 60 mm is formed in the bottom of the straight rod and used for enhancing the soil cutting effect and friction force. The spiral piece is welded to the periphery of the bottom of the straight rod, the radius of the spiral piece is 10 cm, the spinning soil penetrating capacity is improved, and the installation process is simplified. Through the design of the cross-shaped necking and the spiral pieces, the construction difficulty and the time cost are effectively reduced, the stability and the construction efficiency of the pile body are improved, and the greenhouse pile is suitable for rapid construction of greenhouses.