64results about How to "Improve joint strength" patented technology

The invention belongs to the technical field of welding, and discloses an L-shaped laser-MIG hybrid welding device for a narrow space, and the L-shaped laser-MIG hybrid welding device for the narrow space comprises a welding gun assembly, a laser welding head assembly and a space adjusting assembly. The laser and the electric arc are combined, a laser and electric arc composite heat source is obtained, and the advantages of laser and electric arc composite welding are fully exerted; laser-MIG hybrid welding has the advantages of being high in welding speed, low in heat input, large in equipment clearance tolerance degree and high in welding quality. A welding gun wire feeding route is optimized, the precision of a wire guide assembly is improved, the straightness of a welding wire is guaranteed by combining a three-wheel straightener, and the purpose of stable wire feeding is achieved. The overall connecting piece structure is simplified, the reflecting copper mirror integrating reflection, collimation and focusing is designed, the overall size space is saved, the overall load is reduced, and more functions can be added compared with equipment of the same type under the condition that the load is limited.

The invention discloses a vacuum diffusion bonding method for a nickel-based superalloy and MoNbTaW series refractory alloy, and aims to solve the problem that the quality of a welding joint is affected due to the fact that the welding joint of the nickel-based superalloy and the MoNbTaW series refractory alloy can generate a Cr-rich brittle phase. The vacuum diffusion method comprises the following steps: 1, polishing the nickel-based high-temperature alloy and the MoNbTaW series refractory alloy; secondly, nickel sulfate, nickel chloride, nickel borate, sulfuric acid, lauryl sodium sulfate and water are mixed, an electroplating solution is obtained, the nickel-based superalloy is electroplated, an electroplated nickel grain layer is obtained, and the MoNbTaW series refractory alloy and the nickel-based superalloy are jointed; thirdly, the to-be-welded part is placed in a vacuum diffusion furnace; and 4, performing vacuum diffusion bonding. According to the method, the electronickelling grain layer is used, connection is conducted at the relatively low temperature and the relatively low pressure, only interdiffusion of the electronickelling grain layer and refractory alloy in a small range exists on a connector interface, a Cr-rich brittle phase is not generated, and cracks are prevented from being generated in the connector.

The invention relates to an epitaxial layer transfer method and a manufacturing method of a light-emitting chip, and the epitaxial layer transfer method of the light-emitting chip comprises the steps: forming a semi-solid first etching type glue layer on a bearing substrate, and forming a semi-solid second etching type glue layer on an epitaxial layer borne by a substrate; the thickness of at least one of the first etching type adhesive layer and the second etching type adhesive layer is reduced through etching; the first etching type adhesive layer and the second etching type adhesive layer which are subjected to the thinning treatment are subjected to alignment press fit; and removing the substrate. The etching type adhesive layer can be etched to any required thickness by controlling the etching rate and the etching time, so that the etching type adhesive layer which is thin enough can be manufactured. Bonding is carried out after the etching type adhesive layer is thinned, the overall thickness of a bonding layer formed after the first etching type adhesive layer and the second etching type adhesive layer are pressed can be reduced, laser stripping in the follow-up manufacturing process is facilitated, residues of the adhesive layers on the light-emitting face of the light-emitting chip can be reduced, and the light-emitting effect of the light-emitting chip is optimized.

The utility model relates to a composite porcelain bushing explosion-proof current transformer, which comprises a high-voltage shell, an explosion-proof bushing, a base and a secondary junction box, the secondary junction box is arranged on the bottom surface of the base, the high-voltage shell is connected and supported on a bottom plate at the upper end of the base through metal flanges adhered to the two ends of the porcelain bushing, a glass fiber reinforced plastic inner bushing is lined in the porcelain bushing, and the explosion-proof bushing is arranged on the bottom plate. Metal flanges are adhered to the two ends of the porcelain sleeve; the glass fiber reinforced plastic inner sleeve is connected with the shielding supporting pipe in a penetrating mode along the same center line, the shielding supporting pipe extends into the high-voltage shell and supports the secondary coil through the coil shielding cylinder, the shielding supporting pipe is located on a bottom plate at the upper end of the base, a lead is arranged in the shielding supporting pipe, and the two ends of the lead are connected into the secondary coil and the secondary junction box respectively. The shielding supporting pipe is made of hard aluminum alloy, and the space between the shielding supporting pipe and the glass fiber reinforced plastic inner sleeve is filled with insulating gas. The device is simple in structure, effectively guarantees the supporting of a high-voltage insulating part, is firm and stable in structure, can prevent the supporting sleeve from being damaged and leaked, and is safe to use.

The invention relates to the technical field of brazing materials, in particular to brazing filler metal and a preparation method and application thereof. The brazing filler metal comprises a strip-shaped wear-resisting body and at least one brazing filler metal pipe arranged on the outer side of the strip-shaped wear-resisting body in a sleeving mode, the strip-shaped wear-resisting body comprises a plurality of wear-resisting particles located on the core portion and a metal net wrapping the outer sides of the wear-resisting particles, and the outer surfaces of the wear-resisting particles are wrapped with brazing flux layers. According to the method, firstly, the wear-resistant particles are covered with the uniform brazing flux layer in a hot-cladding mode, the metal net with the proper pore inner diameter is adopted to wrap the wear-resistant particles to be fixed and bound into strips or rods, finally, the brazing filler metal pipe is arranged outside in a sleeving mode, the high-strength, high-wear-resistant and component-replaceable brazing filler metal is obtained, and the method is easy to operate, easy to implement and high in efficiency. According to the brazing filler metal, the feasibility that brazing filler metal components are replaced at any time according to the brazing performance requirement is achieved, the diversity requirement for workpiece brazing is met, and a connector of a brazing workpiece is high in strength and good in abrasion resistance.

The purpose of the present disclosure is to provide a contact piece in which there is no oxide film between the bonding surfaces of the base and the contact and the bonding property between the contact and the base is improved. The manufacturing method of the contact piece disclosed in the present disclosure is characterized by comprising: a step of forming a groove portion whose depth is longer than the width from the surface of the contact; a step of placing the base on a mounting table of an ultrasonic bonder; a step of placing the contact on the base on the mounting table in a manner that the base and the surface forming the groove portion are in contact; a step of bringing an ultrasonic horn of the ultrasonic bonder into contact with the contact; and a step of applying ultrasonic energy from the ultrasonic horn to bond the contact and the base.

This invention relates to the field of molding and joining equipment for plastic sheets, specifically to a far-infrared hot-melt overlapping plastic box forming device, comprising a frame, a lower pressure mold fixedly connected to the frame, and a pressing mechanism. The pressing mechanism is disposed above the lower pressure mold and can move in a direction perpendicular to the surface of the lower pressure mold to press the joint of the sheet. A first clamping mechanism and a second clamping mechanism are respectively disposed on both sides of the lower pressure mold, which are used to clamp the two sections of the sheet to be joined. This invention, by fixing the first clamping mechanism and rotatably disposing of the second clamping mechanism, uses a rotating shaft to drive the second clamping mechanism to rotate around the axis, so that the sheet held by the second clamping mechanism automatically changes its spatial posture during the rotation, and drives the unconstrained sheet to move synchronously, thereby automatically converting the sheet from the initial enclosed state to a flat enclosed state that is easy for hot-melt pressing.

The present invention relates to a cylinder liner. By suppressing the gap generated in the joint between the outer peripheral surface of the cylinder liner substrate and the cylinder body, the joint strength between the cylinder liner and the cylinder body is improved. The cylinder liner (10) for casting has a substrate (12) and a plurality of protrusions formed on a base surface (12S) as the outer peripheral surface of the substrate (12), and the drag coefficient CD defined by the following mathematical formula (5) is 10 to 35%. In which, S p is the cross-sectional area of ​​the cylindrical protrusion area, S0 is the cross-sectional area of ​​the cylindrical outer area without protrusion, S1 is the hypothetical flow path area, P1 is the dynamic pressure of the molten metal, ρ is the molten metal density, U is the flow velocity of the molten metal in the cylindrical outer area measured by the visualization experiment, PD is the dynamic pressure, SA is the projection area of ​​the protrusion, SB is the obstacle area, and R1 is the resistance. Mathematical formula (1) is S p +S0=S1, mathematical formula (2) is P1=ρU 2 / 2, mathematical formula (3) is PD=P1×S1, mathematical formula (4) is R1=P1×SB, and mathematical formula (5) is CD=R1 / PD.

A method for manufacturing a dissimilar material joined body (10), in which a rivet (40) is driven into a first member (20), protrusions (43B) and recesses (43C) of the rivet (40) are fitted to the first member (20), and a center shaft part (42) of the rivet (40) is inserted into the first member (20), the rivet (40) having a head part (41) and the center shaft part (42), the center shaft part (42) having a substantially cylindrical shape and a plurality of protrusions (43B) and recesses (43C) on an outer peripheral surface (43A). A center shaft portion (42) of a rivet (40) inserted through a first member (20) is brought into contact with a second member (30) made of a material different from that of the first member (20), a gap between a head portion (41) of the rivet (40) and the second member (30) is pressurized and energized, and the rivet (40) and the second member (30) are welded to form a dissimilar material joined body (10).

In a vehicle headlamp, a projection lens formed of acrylic resin and a lens holder formed of polycarbonate are joined by laser welding. The projection lens is formed to be transparent and has a joining surface. The lens holder is formed to be transparent and has a welding surface for joining the joining surface. Laser light with a wavelength of 1550nm to 1640nm that can pass through the projection lens is irradiated on the welding surface, thereby joining the projection lens and the lens holder to each other.

[Problem] To provide a metal-clad laminate and a method for manufacturing the same, whereby it is possible to bond a metal foil to an LCP film with high strength while improving the anisotropy of the LCP film. [Solution] The present invention provides a method for producing a metal-clad laminate, the method comprising: a lamination step for laminating a first liquid crystal polymer film, a second liquid crystal polymer film, and a lamination precursor of a first metal foil such that the surface of the first liquid crystal polymer film and the surface of the second liquid crystal polymer film directly face each other; a heating step for heating the lamination precursor for 1-60 minutes at a temperature of 15-45 DEG C higher than a first melting point, which is the higher one of the melting points of the first liquid crystal polymer film and the second liquid crystal polymer film, in an environment having a vacuum degree of 200 hPa or less; and a pressurization step in which cooling is started after the heating step has ended, and the lamination precursor is pressurized in the lamination direction at a first pressure of 0.5-5 MPa. In the lamination step, the first liquid crystal polymer film and the second liquid crystal polymer film are laminated such that the extension direction of the first liquid crystal polymer film and the extension direction of the second liquid crystal polymer film form an angle of 80-100 DEG.

An arc welded joint and an arc welding method are provided. The arc welded joint of the present invention has a weld formed by arc welding of an overlap of at least two steel sheets. The throat in the weld and the sheet that is uppermost among the steel sheets satisfy the relationship 0.5 × t ≤ a ≤ 1.8 × t wherein a is the throat and t is the thickness of the uppermost sheet. In a region extending 2.0 mm from a bead toe of the weld in a weld metal direction and also extending 2.0 mm from the bead toe in a base material direction, the slag-covered area ratio SRATIO calculated by SRATIO = 100 × SSLAG / STOE is 50% or less wherein STOE is the bead toe surface area that is the surface area of a weld bead in the region, and SSLAG is the slag surface area that is part of the bead toe surface area STOE and represents the area of a region covered with a slag.

A film capacitor (1) is provided with: a capacitor element (10) including an element main body (11) and an external electrode (12) provided on an end surface of the element main body (11); and a lead-out terminal (20) electrically connected to the external electrode (12). The element main body (11) is a laminate including a metallized film (e.g., a first metallized film (51)) in which a metal layer (e.g., a first metal layer (55)) is provided on at least one main surface of a dielectric film (e.g., a first dielectric film (53)). The external electrode (12) is connected to a metal layer (for example, a first metal layer (55)). The leading-out terminal (20) is welded to the external electrode (12). The surface roughness Ra of the external electrode (12) is 20 [mu] m or more and 45 [mu] m or less, and the recessed depth (D) of the lead-out terminal (20) from the surface of the external electrode (12) is 0.5 mm or more.

The invention belongs to the technical field of helicopter automatic inclinator variable pitch pull rod structure design, and particularly relates to an integrated variable pitch pull rod and a forming method thereof. The variable-pitch pull rod comprises two composite material joints (1), a composite material pull rod body (2) and four shoulder bushings (3), wherein inward bosses are formed at the joints of the large inner diameter sections and the small inner diameter ends of the composite material joints (1); the outer circle of the composite material connector (1) is in an inverted cone shape. The outer diameter of the end part of the composite material pull rod body inner pipe (2.1) is smaller than that of the middle section; the inner circles at the two ends of the composite material pull rod body outer pipe (2.2) are inverted cone-shaped; an annular positioning boss is arranged on the end face of the shoulder bush (3), and a linear positioning boss is arranged in the axial direction of the shoulder bush (3). The four convex shoulder bushings (3) are respectively pre-buried in lug holes of the double insertion lugs of the composite material joint (1); the two composite material joints (1) are respectively formed at two ends of the composite material pull rod body (2).

Provided is a laminated ceramic electronic component having improved mechanical strength and reliability. The laminated ceramic electronic component includes: a ceramic body in which a first internal electrode and a second internal electrode are laminated, the first main surface and the second main surface are opposite to each other in the stacking direction, the first side surface and the second side surface are opposite to each other in the width direction which is straight along with the stacking direction, and the first end surface and the second end surface are opposite to each other in the length direction which is straight along with the stacking direction and the width direction; a first external electrode formed on the first end surface, the edge portion of the first external electrode further extending from the first end surface to the first main surface, the second main surface, the first side surface, and the second side surface; and a second external electrode formed on the second end surface, the edge portion further extending from the second end surface to the first main surface, the second main surface, the first side surface, and the second side surface, the first internal electrode being led out to the first end surface and connected to the first external electrode, and the second internal electrode being led out to the second end surface and connected to the second external electrode, the first external electrode and the second external electrode are each provided with a base external electrode, a resin layer formed on the outer side of the base external electrode, and at least one plated external electrode layer formed on the outer side of the resin layer, and the base external electrode is discontinuously formed on the ceramic body. The ceramic body has an exposed region partially exposed from the discontinuously formed base external electrode, the resin layer covers the discontinuously formed base external electrode and the exposed region, the first external electrode is in the first end surface, and the second external electrode is in the second end surface. The first external electrode and the second external electrode are respectively formed on the first main surface, the second main surface, the first side surface and the second side surface, and are completely covered by a resin layer on the substrate external electrode and the exposed region which are formed discontinuously. The substrate is provided with a region in which the resin layer covers the substrate external electrode and the exposed region which are formed discontinuously, and a resin layer non-forming region in which the resin layer does not cover the substrate external electrode and the exposed region which are formed discontinuously.

The present invention provides a metal particle sintering dispersion medium that provides a conductive paste that can sinter metal particles well at low temperatures even without a reducing atmosphere, and a conductive paste using the dispersion medium. The metal particle sintering dispersion medium disclosed herein contains formic acid and a basic compound, wherein the basic compound is a nitrogen-containing compound represented by the following formula (1), and the molar ratio of the basic group contained in the basic compound to formic acid (basic group / formic acid) is 0.50 to 1.20. [Chemical Formula 1] In formula (1), R a ~R c The same or different, represents a hydrogen atom or a hydrocarbon group optionally having a substituent. A double dashed line including a dotted line represents a single bond or a double bond. In the case of a double bond, R is absent. c . R a ~R c Any two of them are optionally bonded to each other to form a ring together with the adjacent nitrogen atom.

The utility model relates to an adhesive film transportation tool with a jointing function, which comprises power components arranged on a frame and a workbench arranged on the frame, and the power components are uniformly distributed on two sides of the workbench; the tool further comprises a hot pressing assembly, a cutting assembly and a fixing block connected to the frame. The hot pressing assembly and the cutting assembly are both arranged on the fixing block and act on the workbench. A sensing plate is arranged on the surface of the workbench. The tool further comprises a controller. Through interlocking control of the integrated induction plate and the controller and linkage operation of the power assembly, the hot pressing assembly and the cutting assembly, the manual intervention link is eliminated, the production takt is completely matched with a continuous production line, and the productivity is improved.

The dissimilar metal material bonding structure (1) is mainly composed of a first bonding material (3), a second bonding material (5), and a three-dimensional structure (7). The three-dimensional structure (7) is bonded to the first bonding material (3). The second bonding material (5) fills the space (9b) of the three-dimensional structure (7) and is geometrically integrated with the three-dimensional structure (7). As described above, the three-dimensional structure (7) and the first bonding material (3) are bonded through an interface (11). In addition, the second bonding material (5) fills the space (9b) of the three-dimensional structure (7) and is integrated. The first bonding material (3) and the second bonding material (5) are bonded through the three-dimensional structure (7). At this time, since the second bonding material (5) fills the space (9b) of the three-dimensional structure (7), it is firmly bonded and integrated through an anchoring effect. In addition, by inducing a metallurgical reaction at the interface between the first bonding material and the second bonding material, the bonding (tensile) strength can be improved.

The invention provides a coil component capable of improving the bonding strength between an electrode and a wire rod extending from a winding core part. A coil component (100) is provided with: a core body (10) having a winding core part (11) extending in the axial direction, and a first flange part (12a) and a second flange part (12b) respectively provided at both end parts of the winding core part in the axial direction; electrodes (20) including a first electrode (20a) and a second electrode (20b) provided on the first flange portion and the second flange portion, respectively; and a first wire (30) wound around the winding core portion and having a first end portion (30a) joined to the first electrode and a second end portion (30b) joined to the second electrode, the first electrode having a first joining surface (21a) to which the first end portion is joined, and at least one protrusion (25) provided on the first joining surface. The first end portion is joined to the first joining surface in a state in which the first wire extends across at least one protrusion provided on the first joining surface.

The invention relates to a memory device and a manufacturing method thereof. A memory device includes a first peripheral circuit having a first page buffer and functionally divided into a cell region and a connection region. A first memory cell array on a first peripheral circuit includes a first bit line electrically connected to a first page buffer. A second memory cell array on the first memory cell array includes second bit lines electrically connected to the first bit lines, respectively. The first peripheral circuit can utilize the two memory cell arrays using a connection between the two memory cell arrays.

The present application realizes a thermistor in which a complex including a plurality of particles composed of a metal oxide is used as a thermistor layer, and a high bonding strength is obtained between the thermistor layer and electrodes. A thermistor is a thermistor in which a structure including a thermistor layer and two electrodes is arranged on a base layer, the base layer includes a resin component, the thermistor layer includes a plurality of particles composed of a metal oxide including at least one first metal element, and a complex existing between the plurality of particles and including an amorphous phase of the same metal element as the first metal element, the first metal element including at least one of Mn and Ni, the two electrodes are composed of at least one second metal element selected from Cu, Al, Ag, and Ni, and a bonding layer in which the second metal element and the resin component are diffused in the complex exists between the two electrodes and the thermistor layer.

This invention relates to the field of laser welding equipment technology, and discloses a laser welding device and process for steel structure construction. The laser welding device for steel structure construction includes a welding machine body, a moving module located at the top of the welding machine body, a laser head located outside the moving module, and a spraying mechanism located at the bottom of the moving module. The spraying mechanism includes a nozzle located at the bottom of the moving module, an ultrasonic atomizer located on the inner wall of the nozzle, a delivery pipe located in the middle of the nozzle, a negative pressure pipe located at the bottom of the moving module near the nozzle, an inner rotating shell located outside the nozzle, and an outer rotating shell located near the inner rotating shell. By setting up the spraying mechanism, on-site mixing and atomization spraying of flux and welding material powder are achieved, reducing laser reflectivity, promoting rapid formation of the molten pool and enhancing the penetration effect, thereby improving welding quality and joint strength.

The invention provides an electricity storage device and a method for manufacturing the electricity storage device. Even if the electricity storage device is placed at a low temperature of-40 DEG C, cracks do not easily occur in the vicinity of a pair of long-side-side joint surfaces in a resin inner side part of a resin member. A power storage device includes a case cover member, a terminal member, and a resin member. The resin member has a resin outer portion, a resin inner portion, and a resin hole interior, and the housing cover member and the resin member are configured such that when the housing cover member and the resin member are placed in an environment at a temperature of-40 DEG C, the resin member is warped in a convex shape toward the outside in the thickness direction of the cover in the longitudinal direction of the cover, and the resin member is warped toward the outside in the thickness direction of the cover in the longitudinal direction of the cover. A pair of long-side joining surfaces in the resin inner portion press the terminal members in the cover long-side direction, respectively.

The utility model discloses a transformer wire structure which comprises a transformer body, a wire socket and a wire plug, the input end of the transformer body is electrically connected with the power connection end of the wire socket, the wire socket is installed on the top face of the transformer body in an embedded mode, and the wire socket comprises a sleeve shell and an electrode base movably installed on the inner side of the sleeve shell. A supporting spring is arranged on the bottom face of the electrode base, a copper bar and a locking block are fixedly installed on the surface of the electrode base, a plurality of spring pins are arranged on the surface of the locking block and perpendicularly abut against the surface of the copper bar, and a copper bar is fixedly installed on the top face of the sleeve shell. According to the utility model, the novel copper bar connecting structure is arranged, the special-shaped copper socket is matched and attached with the electrode holder, and conductive connection on the surface of the transformer is carried out during abutting and locking of the spring pin, so that joint locking can be carried out, and poor contact caused by movement such as deflection of the copper socket is avoided; plugging operation is facilitated for dismounting and maintenance of the transformer, and the practicability of the wire structure is improved.

The manufacturing method of the R-T-B system sintered magnet of the present invention includes: a process of preparing a plurality of R1-T-B system sintered magnet raw materials with different compositions; a process of preparing an R2-M alloy powder containing 65 mass % to 97 mass % of R2 and 3 mass % to 35 mass % of M and produced by an atomization method; and a process of arranging the R2-M alloy powder between the plurality of R1-T-B system sintered magnet raw materials and joining the plurality of R1-T-B system sintered magnet raw materials at a temperature of 450°C to 1000°C.

The present application relates to the field of polymer materials, and specifically discloses a TPE corner material with high bonding strength and a preparation method thereof; a TPE corner material with high bonding strength, comprising a styrene elastomer, a chlorinated polypropylene compound, a tackifying resin, a filler, a filling oil, polypropylene, a lubricant, a pigment, a foaming agent, and other additives; the preparation method thereof is as follows: the filling oil is blended with the styrene elastomer and recorded as filler 1 and filler 2 respectively; the filler 1, the chlorinated polypropylene compound, the tackifying resin, the filler, polypropylene, the pigment, the lubricant, and other additives are blended to obtain a mixture 1; the filler 2 and the foaming agent are mixed evenly to obtain a mixture 2; the mixture 1 is fed through a main feeding port, the mixture 2 is fed through a side feeding port, and the mixture is extruded and granulated to obtain TPE corner material particles; and the invention has the advantages of high bonding strength, smooth surface, no shrinkage marks, and high processing efficiency.

A method for manufacturing an automobile structural member according to an embodiment includes: a pre-bonding step for preparing a laminate in a state in which a first metal member, a solid-state adhesive having an amorphous thermoplastic resin as a main component, and a second metal member are arranged in this order, and a bonding step for bonding the first metal member, the solid-state adhesive, and the second metal member; the amorphous thermoplastic resin is at least one of a thermoplastic epoxy resin and a phenoxy resin, and in the bonding step, the laminate is heated and pressurized to melt the solid binder and bond the first metal member and the second metal member, and the Young's modulus of the second metal member is higher than the Young's modulus of the first metal member by 5 GPa or more.

A driving mechanism is used for driving an optical element to move and mainly comprises a fixed part, a movable part and a driving assembly. The movable part is movably connected with the fixed part, the optical element is arranged on the movable part, and the driving assembly is used for driving the movable part to move relative to the fixed part.

A steel pipe welded joint (10) includes a base material part (1a, 1b) and a circumferential weld part (2). The circumferential weld part (2) is composed of a weld metal part (2a) and a weld heat-affected part (2b, 2c). The base material part (1a, 1b) has a predetermined chemical composition, with Pcm of 0.25 to 0.30. The weld metal part (2a) has a predetermined chemical composition, with B content of 0.0010% or less. The tensile strength of the base material part (1a, 1b) and the tensile strength of the joint in the circumferential weld part (2) in the tensile test are 980 MPa or more. The average hardness of the base material part (1a, 1b) is 300 HV10 or more. The average softening width of the weld heat-affected part (2b, 2c) is 4.0 mm or less, and the average softening degree is 80 HV10 or less.