23 results about "Bead shape" patented technology

The invention provides a profiling welding path planning method based on image processing and geometric forming simulation, electronic equipment and a storage medium, and relates to the technical field of welding. The profiling welding path planning method can more accurately simulate complex welding bead shapes, boundary calculation and posture changes in the actual welding process, and comprises the steps that a welding bead forming prediction model is constructed; establishing a groove section image; the groove section image is read based on the image processing technology, and weld bead layering is conducted on the groove; calculating the number of pixels occupied by a weld bead section formed by the molten drops in the groove; calculating the pixels of the current layer of welding bead based on an image processing technology, and completing welding bead partitioning of the current layer of welding bead according to the calculated number of the pixels occupied by the welding bead section formed by the molten drops in the groove; calculating the gravity center of the current welding bead, and taking the gravity center as a molten drop target drop point of the current welding bead; and optimizing the starting point of the droplet transition, and taking the direction of the gravity center point of the current welding bead pointing to the starting point of the droplet transition as a planning posture.

To provide a composite filler having an electric insulation property that is higher than the conventional electric insulation property while having a heat dissipation (a thermal conductivity).SOLUTION: A composite filler forms a core shell structure formed by a core material that is made of carbon, metal, zinc oxide, or zirconium oxide, and a shell material adhered to a front surface of the core material. The shell material is formed by adhering a fumed oxide particle to one part or a whole part of the front surface of the core material by mixing the fumed oxide particle with the core material through a dry ball mill. The fumed oxide particle is a particle that the number of primary particles in a real spherical type is aggregated and fused, and thus a bulky aggregation particle is formed, and that is changed from the aggregated particle to an agglomeration particle. In a composite filler, the core material is 30 to 85 volume%, the shell material is 15 to 70 volume%, a heat transmission ratio is 0.075 W / m K or more, a volume resistance is 1.0×105 Ω cm or more, and an insulation damage voltage is 1kV / mm or more.SELECTED DRAWING: Figure 1

A system for forming a steel material includes a first binder, a second binder, a punch and a carrier blank. The first binder and the second binder are configured to form a draw bead shape in the steel material by compressing the steel material between a draw bead protrusion and a draw bead channel. The punch is configured to form the steel material relative to the first binder and the second binder. The carrier blank is positioned on a surface of the steel material and is configured to cover a portion of the draw bead shape during formation of the draw bead shape in the steel material.

To provide an electroslag welding flux that can increase toughness of a weld metal part and an HAZ part while maintaining good bead shape.SOLUTION: An electroslag welding flux comprises by mass% to a total mass: SiO2 of 20 to 30%; CaO of 15 to 40%; MnO of 10 to 30%; MgO of 5 to 15%; Al2O3 of 5 to 20%; CaF2 of 3 to 10%; TiO2 of 0.5 to 4%; a total of FeO and FeO conversion value of metal Fe of 0.1 to 3%; a total of NiO and a NiO conversion value of metal Ni of 0 to 2%; B2O3 of 0 to 2%; BaO of 0 to 0.1%; Na2O of 0 to 0.1%; K2O of 0 to 0.1%; Li2O of 0 to 0.1%; ZrO2 of 0 to 0.1%; oxides other than the above of 0 to 5% in total; fluorides other than the above of 0 to 3% in total; carbonates of 0 to 0.5% in total; and the reminder comprising impurities.SELECTED DRAWING: None

To provide an analysis method for porosity measurement in a weld bead cross section capable of obtaining a quality result at a high level by suppressing variations in measurement results.SOLUTION: An analysis TP production step of producing an analysis TP (test piece) from a weld zone of a work welded with a non-ferrous material; an image input step of inputting a weld bead cross-sectional image obtained by imaging the weld bead cross-section in the analysis TP to an analysis program; and a data generation step of generating an analysis TP (test piece) from the analysis TP using bead shape learning data previously acquired; A pre-processing step of generating a mask image of a weld bead in a weld bead cross-sectional image, a post-processing step of superimposing the weld bead cross-sectional image and the mask image to generate a processed image in which a portion other than the weld bead is cut out, and a porosity measurement step of measuring a porosity of the weld bead from the processed image, in which the learning data is a combination of a plurality of weld bead cross-sectional images obtained by polishing the weld bead cross-section with a plurality of abrasives and a resolution of the weld bead cross-sectional image.SELECTED DRAWING: Figure 1

The invention relates to a device and method capable of monitoring the contact state of a tire bead in real time, and relates to the technical field of wheels, and the device comprises one or more sensor modules arranged on a rim; the sensor module comprises a plurality of interdigital capacitive MEMS acoustic emission sensors which are arranged along the edge, close to one side of the seam allowance, of any radial section of the rim, and the monitoring direction is perpendicular to the surface of the rim. According to the method, the bottleneck of a traditional monitoring method is broken through, the real-time dynamic displacement curve of the joint of the seam allowance and the rim can be monitored in real time based on the interdigital capacitive MEMS acoustic emission sensor under the working conditions of static inflation, static load and rolling of the tire, and whether the seam allowance slides or is dislocated abnormally or not is monitored. Key information is provided for optimization of the seam allowance curve, the seam allowance shape better conforming to mechanical distribution can be designed, the risk of fatigue damage is reduced, the durability and reliability of the tire seam allowance part are improved, the service life of a tire is prolonged, and the safety of a vehicle is guaranteed.

An object is to provide a gas-shielded arc welding method and a method for manufacturing a welded joint that can prevent the intrusion of oxygen into a weld metal without using a special device and can suppress the formation of slag, and that can stably produce welded joints with a good bead shape. A gas-shielded arc welding method is a pulse welding in which a pulse peak current (Ip) and a pulse base current (Ib) are periodically repeated. In the gas-shielded arc welding method, the pulse peak current (Ip) in the pulse welding is 300 A or more and 600 A or less; the welding speed (V) is 80 cm / min or more and 200 cm / min or less; the pulse peak current (Ip), the pulse base current (Ib), a base material to contact tip distance (L), and the welding speed (V) satisfy a specific expression; and a gas containing 98 vol% or more Ar is used as a shielding gas.

This invention discloses a beaded cobalt-doped Bi 25 FeO 40 The preparation method of / BiFeO3 nanofiber microwave absorbing material involves obtaining a precursor through a static method, then adding it together with bismuth nitrate, ferric nitrate, and a spinning aid into a mixed solvent composed of N,N-dimethylformamide and anhydrous ethanol to obtain a spinning solution. The spinning solution is then spun using electrospinning technology to obtain a nanofiber membrane. Finally, the material is obtained after drying and calcination. This microwave absorbing material increases the multiple reflections and scattering of electromagnetic waves, improving electromagnetic wave absorption performance. Furthermore, the heterogeneous interface formed after the two-phase composite further increases the interfacial polarization loss, resulting in a minimum reflection loss of -56.01 dB at a thickness of 2.33 mm and an effective absorption bandwidth of 6.32 GHz, covering the entire Ku-band.

A control method for a welding bead shape at the time of manufacturing an additively manufactured object by repeatedly depositing welding beads formed by periodically repeating a forward feeding period and a backward feeding period of a welding wire as one cycle and providing an arc period and a short-circuit period during the one cycle. The method includes keeping an average feeding speed of the welding wire constant, and based on characteristic information in which a peak current value at which a welding current rises from a base current and a short-circuit time that is a length of the short-circuit period in the one cycle are associated with each other, detecting the short-circuit time and controlling the peak current value for each cycle of feeding of the welding wire so that the short-circuit time falls within a target range determined according to the characteristic information.

1. The name of the design product: tea bead shaping machine. 2. The use of the design product: used for secondary pressure shaping of tea beads, and ejecting the tea beads after shaping. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

The present invention provides a fiber-reinforced resin molded article with high strength and excellent productivity, and a method for producing the fiber-reinforced resin molded article. [Solution] The fiber-reinforced resin molded body of the present invention comprises a thermosetting resin and a fiber material, and includes a main body portion and a rib portion. Furthermore, since the main body portion has a bead, the rib portion is erected on the ridge line on the back side of the bead, the fiber material of the main body portion is continuous fiber, and the fiber material of the rib portion is short fiber with a shorter fiber length than the continuous fiber, the reinforcement by the bead shape of the main body portion and the reinforcement by the rib standing on the ridge line combine to provide a fiber-reinforced resin molded article with high strength and excellent productivity, as well as a method for manufacturing the fiber-reinforced resin molded article.

An object is to provide a gas-shielded arc welding method and a method for manufacturing a welded joint that can prevent the intrusion of oxygen into a weld metal without using a special device and can suppress the formation of slag, and that can stably produce welded joints with a good bead shape. A gas-shielded arc welding method is a pulse welding in which a pulse peak current (Ip) and a pulse base current (Ib) are periodically repeated. In the gas-shielded arc welding method, the welding speed (V) and the short-circuit frequency (F) satisfy a specific expression, and a gas containing 98 vol% or more Ar is used as a shielding gas.

The present disclosure provides a method of controlling a bead shape of a dispensed bead of material along a dispensing path, by adjusting at least one of a) a robot path parameter or b) a dispenser parameter, using at least one of i) a user input or ii) a feedback from a sensor, to vary the bead shape based on a characteristic of the workpiece. A method of optimizing a non-linear robotic trajectory of deposition of a bead material includes a) obtaining a nominal deposition path; b) selecting at least one process parameter; c) optimizing the deposition path using the at least one process parameter and at least one path or parameter tolerance to create an adjusted deposition path; d) checking for at least one issue along the adjusted deposition path; and e) finalizing the adjusted deposition path. A method of depositing a bead of material in a non-linear path includes optimizing a non-linear robotic trajectory of deposition of a bead material and depositing the bead of material in the finalized adjusted path.

To provide a metal mold design system which improves, while reducing the time and trouble of metal mold design, design efficiency of the metal mold without being influenced by worker's proficiency.SOLUTION: A metal mold design system comprises: a simulation part; a resistance estimation part; a map; and a shape selection part. The simulation part calculates: a first inflow which is an inflow of material when a bead shape of a metal mold is a first shape; and a second inflow which is an inflow of material when the bead shape thereof is a second shape. The resistance estimation part identifies a candidate resistance force that is a bead resistance force estimated within a prescribed target range of the inflow of material based on the first inflow and the second inflow. The map memorizes the relation between the bead resistance force and the bead shape. The shape selection part selects a bead shape corresponding to the candidate resistance force in the map as a candidate of the bead shape of the metal mold.SELECTED DRAWING: Figure 1

The purpose of the present invention is to provide a carbon material which exhibits a high oil absorption and thus can exhibit excellent battery characteristics and the like. The present invention is a carbon material having an oil absorption of 550 mL / 100 g or more as measured in accordance with JIS K5101-13-1: 2004 in Japan. The present invention is a method for producing the carbon material, the method comprising: a removal step for forming a carbon material precursor by removing the mold material from the carbonaceous layer covering the mold material, and removing the carbon material precursor from the carbonaceous layer covering the mold material; the carbonaceous layer covering mold material is composed of a mold material, which is an aggregate formed by aggregating and connecting a plurality of primary particles in a bead shape, and a carbonaceous layer formed so as to cover the surface of the mold material.

In one embodiment, a method includes dispensing, by a robot within a manufacturing environment, one or more linear beads of a liquid adhesive representing a target complex dispensing path onto a surface of a substrate using at least one process parameter, the linear beads extending along a longitudinal axis and based on the at least one process parameter, having a bead shape transverse to the longitudinal axis; and measuring, by a measuring device positioned within the manufacturing environment, at least one characteristic of the shape of the bead at a plurality of discrete locations along the longitudinal axis of the linear bead via a one-dimensional scan.

Provided is a Ni-based alloy flux-cored wire with which it is possible to obtain a weld metal in which the occurrence of weld defects such as pores and surface pits is suppressed, while having excellent slag stripping properties and bead shapes. A Ni-based alloy flux-cored wire in which a flux is filled in an outer skin comprising a Ni-based alloy, the Ni-based alloy flux-cored wire containing Ni, Cr, Mo, W, Mn, and Fe in prescribed amounts with respect to the total mass of the wire, the Ni-based alloy flux-cored wire containing TiO2: 3.0-10.0 mass%, the SiO2-equivalent value of metal Si and Si oxide: 1.0-3.0 mass%, the SiO2-equivalent value of Si and Si oxide: 1.0-3.0 mass%, and the balance being Fe and unavoidable impurities, with respect to the total mass of the wire, the Ni-based alloy flux-cored wire containing Ni, Cr, Mo, W, Mn, and Fe. The ZrO2 conversion value of the metal Zr and the Zr oxide is less than 1.0 mass%, the Al2O3 content is more than 0.2 mass% and less than 1.2 mass%, the MnO2 content is more than 0.2 mass% and less than 1.6 mass%, and the F content is less than 0.07 mass%.

A control method for an additive manufacturing device includes specifying a space amount indicating a size of a space of an opening portion and a representative position of the opening portion according to a shape profile, determining whether the opening portion is closed based on at least one of a comparison between the space amount and a design value of a bead shape, a comparison between information on the representative position and a target position of a welding bead included in a additive condition, and whether a penetration bead is formed, for a closing path for closing the opening portion with a welding bead to be formed based on the additive condition, and correcting the additive condition of the closing path when it is determined that the opening portion is not capable of being closed by the closing path.

The application discloses a high-reliability interface construction method for self-healing material additive manufacturing, and belongs to the technical field of metal matrix composite material additive manufacturing. The method comprises the following steps: firstly, memory alloy fibers are processed into a string bead shape through selective local etching to form a periodic "thick section-thin section" alternating structure; secondly, nanosecond pulse laser is used to construct a periodic micron groove on the surface of the fiber; and finally, the multi-scale structured fiber is combined with an aluminum-lithium alloy through laser melting deposition under the protection of argon. The molten aluminum-lithium alloy penetrates into the micron groove and coats the thick section under the capillary action, and after solidification, a "macro mechanical anchoring" and "micro mechanical hooking" double interlocking interface is formed. The method starts from physical structure design, and realizes stable and high-strength interface bonding between the aluminum-lithium alloy and the memory alloy without complex metallurgical regulation.

The present invention provides a carbon material comprising connection structures that form internal spaces inside the carbon material, with the internal spaces communicating with each other to form a communication space, wherein the existence form of the outer shape of the connection structure is controlled. A carbon material 1 according to the present invention comprises one or more connection structures 2 having an extension shape in which a plurality of hollow particle-like parts 21 are connected in a bead shape, wherein the hollow particle-like parts 21 partition and form internal spaces 23 and are defined by surrounding walls 22 composed of a carbonaceous material including a graphene structure. Pores are formed in the connection structures 2. When the existence form of the connection structures 2 is classified into four types: branched, linear, spherical, and elliptical, the proportion of the branched form to the total of the connection structures 2 classified into these four types is 10.0 to 50.0%.

This additive manufacturing device comprises: a beam heat source supply unit that outputs a beam for melting a manufacturing material; a current supply unit that causes a current to flow through the manufacturing material; a manufacturing material supply unit (16) that supplies the manufacturing material to a workpiece; and a bead shape control unit that acquires bead state information, which is information indicating the state of an underlying bead where the manufacturing material has melted and solidified on the workpiece due to Joule heat caused by the beam irradiation and the energization, and controls at least one from among an output value of the beam, a current value during energization, and a manufacturing material supply rate in accordance with the bead state information such that a new bead formed on top of the underlying bead has a determined height and width.

To provide a melting type flux for submerged arc welding, that suppresses insufficiency in scattering thickness even when a flux blow-up phenomenon occurs during submerged arc welding, and that is superior in welding workability such as arc stability, slag releasability and bead shape.SOLUTION: A melting type flux for submerged arc welding satisfies the following expression (1), when X% denotes a mass ratio of foam formation flux particles relative to the total flux mass, and Y% denotes a mass ratio of flux particles excluding the foam formation flux particles.SELECTED DRAWING: Figure 1

An object is to provide a lap fillet arc welding method and a method for manufacturing a welded joint that can prevent the intrusion of oxygen into a weld metal without using a special device and can suppress the formation of slag, and that can stably produce welded joints with a good bead shape. A lap fillet arc welding method performs joining of two steel sheets lapped one on top of the other in such a manner that the welding target position is displaced from an overlap corner formed by the two steel sheets and present at an end of the upper sheet of the two steel sheets, by 0.2 mm or more and 1.8 mm or less in a direction perpendicular to the weld seam of the lower sheet, a gas containing 98 vol% or more Ar is used as a shielding gas, and the weld metal height H (mm) and the weld metal width W (mm) satisfy expression (1) below: 0.2≤H / W≤1.2