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1549 results about "Laser soldering" patented technology

Laser-welded assembly

A metal member and a resin member, or two resin members are welded or bonded to each other at welding or bonding surfaces thereof which are heated by irradiation of a laser beam, thereby providing an assembly wherein the two members are fluid-tightly bonded at the bonding surfaces. The laser beam is transmitted through a laser transmitting resin, and a laser absorbing material which is in contact with the laser transmitting resin is irradiated with the laser beam, so that the laser absorbing material is heated, whereby the laser transmitting resin and the laser absorbing resin are melted owing to the heat. By moving the spot of the laser beam, portions of the resin members to be heated and melted displace, and the resin materials are melted and then solidify. The casing 202 includes an upper part 216 formed of the laser absorbing resin and a lower part 218 formed of the laser transmitting resin. The casing 202 is fixed to a housing 200 formed of the laser absorbing resin, and a contact portion 268 of the upper surface of the housing 200 is irradiated with a laser beam emitted from the laser beam emitting device located outside the casing 202 such that the laser beam is emitted from the upper side of the housing 200 and is obliquely incident on the contact portion 268. The contact portion 268 is irradiated with the laser beam as described above with the location to be irradiated by the laser beam being moved at a constant speed along and throughout the periphery of the casing 202 along walls 206 thereof, whereby the casing 202 and the housing 200 are welded or bonded to each other. The lid 204 formed of the laser transmitting resin is fixed onto the casing 202, and the lid 204 and the casing 202 are welded or bonded to each other by the laser beam emitted from the emitting device located above a contact portion 272 of an upper surface of the casing 202.
Owner:TOYOTA JIDOSHA KK

Laser scanning and laser hot wire TIG composite welding method

The invention provides a laser scanning and laser hot wire TIG composite welding method which is formed by combining scanning laser welding and laser hot wire TIG composite welding. During welding, before a welding wire is fed into a molten pool, the welding wire is heated by low power laser, TIG electric arcs and scanning laser simultaneously act on the molten pool, and the welding wire fed into the molten pool is heated simply by very little heat. On one hand, through the preheating action of the low power laser, the melting efficiency of the welding wire is improved. On the other hand, due to the stirring action of the scanning laser on the molten pool, the temperature gradient is reduced, the solidification and crystallization process is improved, and the property of a welded joint is improved. A scanning trace can be in any forms like a circle, a sine shape and a triangle, and scanning can be carried out in a specific area and range. In addition, due to mutual intensified coupling action of laser electric arcs, the depth of fusion is increased. With the adoption of the laser scanning and laser hot wire TIG composite welding method, high quality of TIG welding is ensured, the efficiency and the welding quality are improved and the welding defects are overcome.
Owner:SHANGHAI JIAO TONG UNIV

Laser seal welding technology of composite aluminum alloy shell

The invention discloses a laser seal welding technology of a composite aluminum alloy shell. The laser seal welding technology comprises the following steps of 1, visual alignment; 2, laser spot welding locating, wherein laser spot welding of a plurality of equal-distance spots is carried out on all the edges of a seam of the aluminum alloy shell and an aluminum alloy cover plate, so that the aluminum alloy shell and the aluminum alloy cover plate are fixed; and 3, laser seal welding, wherein laser seal welding is carried out on the seam of the aluminum alloy shell and the aluminum alloy cover plate, and according to the technological parameters of laser seal welding, the laser pulse peak power is 1,700 W-2,200 W, the pulse waveform is rectangular waves, the pulse width is 2 ms-4 ms, the pulse repetition frequency is 10 Hz-30 Hz, the welding speed is 108 mm/min-270 mm/min, and the defocusing amount ranges from -2 mm to 0 mm. Cracks and air holes at the laser welding seam of the composite aluminum alloy shell can be effectively eliminated, and the packaged composite aluminum alloy shell has the advantages of being attractive in welding seam appearance, high in airtightness, reliability and efficiency, low in cost and the like.
Owner:48TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP

Laser tin soldering device based on FPC (flexible printed circuit) golden finger and soldering method

The invention discloses a laser tin soldering device based on an FPC (flexible printed circuit) golden finger. The laser tin soldering device comprises a first wavelength laser device, a second wavelength laser device and a controller, wherein the second wavelength laser device is different from the first wavelength laser device; the controller is used for controlling the first wavelength laser device and the second wavelength laser device to sequentially emit light; the first wavelength laser device is used for radiating a soldering area and preheating to reach the setting temperature, and then the second wavelength laser device is used for soldering and heating; in the soldering process, the first wavelength laser device is used for preheating a soldering area of the FPC golden finger to reach the preset temperature, the second wavelength laser device is used for soldering and heating the preheating area, and soldering tin is melted to connect a PCB (printed circuit board) and the golden finger. The laser soldering device has the advantages that the golden finger area is preheated by two types of laser with different wavelengths according to material properties, and the reflection of laser is reduced; when the setting temperature is reached, the second wavelength laser device is used for soldering and heating, and the soldering tin is melted to solder; the problem of part of material is destroyed while part of material just reaches the soldering temperature due to different temperature rise property in the soldering part of the PCB is avoided, and the soldering efficiency and soldering quality are improved.
Owner:SHENZHEN ANEWBEST ELECTRONICS TECH

LabView-based real-time monitoring system for laser cladding/laser re-melting process temperature field

The invention discloses a LabView-based real-time monitoring system for a laser cladding/laser re-melting process temperature field, which comprises a software control part and a temperature measuring device, wherein the software control part is composed of a LabView program and a single chip program; the temperature measuring device is composed of an infrared temperature measuring sensor, a single chip, a single chip power supply module, a sensor power supply module, a 22.1184MHz crystal oscillator, a resetting circuit and a laser processing machine tool; the system can be used for realizing the functions of real-time collecting and dynamic monitoring for the temperature data in the laser processing processes of laser re-melting, laser cladding and laser welding, high-temperature alarming, temperature data storage and output, setting for different temperature curve display modes, temperature curve picture output, setting for different temperature precisions, dynamic display of temperature curves, data playback, check and editing, and the like; and the sensors with different temperature measuring scopes are selected according to the temperature measuring demand, so that the temperature measurement within the scope of 0-2500 DEG C is realized.
Owner:XUZHOU UNIV OF TECH

Method for manufacturing and sealing exhaust port in vacuum glass and system thereof

InactiveCN102557410AImprove sealing accuracyNo surface bumpsGlass reforming apparatusFlat glassGalvanometer
The invention relates to a method for manufacturing and sealing an exhaust port in vacuum glass, which comprises the following steps: directly carrying out layer-by-layer three-dimensional carving in plate glass by using laser so as to form the exhaust port, carrying out three-dimensional carving on a glass block by using laser so as to form a glass sealing plug, laying sealant between the plug body and the exhaust port, then welding and sealing the plug body and the exhaust port by using laser. The invention also provides a system for manufacturing and sealing the exhaust port in the vacuum glass, which comprises a laser carving device, a laser welding device, a vacuum chuck and a glass sealing plug installing device, wherein the laser carving device comprises a laser device, a laser power controller, a first galvanometer system and a computer; the laser welding device comprises a laser system and a second galvanometer system; the vacuum chuck is connected with a vacuum pump through a connecting tube; a magnet coil is arranged on the top of the vacuum chuck; and the glass sealing plug installing device is composed of a magnet driving device. The sealing exhaust port in vacuum glass of the invention has the advantages of high sealing accuracy and no surface embossment so as to improve vacuum sealing performance and safety performance, and is easy for on-line implementation so as to improve work efficiency.
Owner:上海镭立激光科技有限公司

Al-Fe alloy plate for shell of power battery and preparation method thereof

The invention provides an Al-Fe alloy plate for a shell of a power battery and a preparation method thereof. The Al-Fe alloy plate comprises the following components in percentage by mass: 0.9-1.6 percent of Fe, 0.08-0.2 percent of Si and the balance of Al and inevitable impurities, wherein the area ratio of a Fe-containing inter-metallic compound with the internal alloy length of more than 1 mu m is over 5 percent in the plate thickness direction. The preparation method comprises the following steps of: casting a cast ingot, raising the temperature of the cast alloy cast ingot to 560-600 DEG C, keeping the temperature for more than one hour, reducing the temperature to 450-520 DEG C, keeping the temperature for more than two hours, and performing hot rolling; and performing cold rolling on the hot-rolled plate to the required thickness, annealing the obtained cold-rolled plate at the temperature of 350-420 DEG C for more than one hour, and performing air cooling after the plate is annealed, wherein the speed is not more than 100 DEG C per hour during temperature rise or reduction. The alloy plate has excellent mechanical property, pulse laser welding performance and forming property, and the requirements of manufacturing the shell of the power battery are met.
Owner:CHINA NON-FERROUS METALS PROCESSING TECH CO LTD

Laser welding method of stainless steel sheet fillet weld and clamp thereof

ActiveCN103406667AGood teaching positionGood locationWelding/cutting auxillary devicesAuxillary welding devicesFillet weldThin slab
The invention relates to a laser welding method of a stainless steel sheet fillet weld and a clamp of the laser welding method. The laser welding method comprises the steps that four protective gas nozzles which are coaxial are used, argon serves as protective gas, demonstration location is conducted through a CCD sensor, visual locating by an operator is replaced, the included angle between a YW-52 welding head and the Z axis ranges from 25 degrees to 30 degrees, a horizontal sheet is in lap joint with the position at the two thirds of the thickness of a vertical sheet, the off-focus value ranges from +15mm to +25mm, the welding speed ranges from 2m/min to 6m/min, and laser welding is conducted. According to the laser welding method of the stainless steel sheet fillet weld, the precision and the speed of production are improved, sheet fillet weld fillet transition is achieved, the front surface and the back surface are not provided with oxidation tints, the welding quality can meet mass production, and the technical requirements of product design are achieved. In order to improve the efficiency and the quality of the welding method, when welding is conducted, the special clamp is applied. According to the welding clamp, one clamp body is in the horizontal position, the other clamp body is perpendicular to the clamp body in the horizontal position, and two 0.7mm sheets are fixed through the welding clamp. Through a rapid fixture, a gasket, pressing plates, a platform and screws, stainless steel can be rapidly located and firmly fixed, and the stainless steel can be prevented from being abraded in the process of fixing.
Owner:NANJING ZHONGKE RAYCHAM TECH

Laser soldering equipment

Laser soldering equipment comprises a rack, an X-axis moving platform, a Z-axis lifting platform and Y-axis feeding and transferring platforms. The Y-axis feeding and transferring platforms are arranged on the machining plane of the rack and used for transferring welding products in the Y axis direction. The Z-axis lifting platform is arranged on the X-axis moving platform. The X-axis moving platform is transversely arranged on the side faces of the Y-axis feeding and transferring platforms to drive the Z-axis lifting platform to move in the X-axis direction. A laser welding head is mounted onthe side face of the Z-axis lifting platform. A laser emission head of the laser welding head conducts laser welding, infrared temperature measurement and visual positioning on the welding point positions by the adoption of coaxial light beans. The laser emission head is sleeved with an outlet wire alignment mechanism. A wire outlet of the outlet wire alignment mechanism is aligned with the focuspoint of the coaxial light beams. The wire outlet is capable of rotating with the focus point as the center. An automatic wire conveying mechanism for conveying tin wires to the wire outlet is arranged on the side face of the laser welding head. The laser soldering equipment has the beneficial effects that the temperature control is precise, the welding positioning accuracy is high, the welding efficiency is high, and the operation is stable and reliable.
Owner:SHENZHEN HYMSON LASER INTELLIGENT EQUIP CO LTD

Laser welding equipment

The invention is applicable to the technical field of laser welding, and provides laser welding equipment. The laser welding equipment comprises a bottom plate and a laser welding head, wherein a rotary shaft is connected onto the bottom face of a rotary plate; two vertical plates are fixed onto the bottom plate; a third guide rod is connected between the two vertical plates; a moving base is slidably arranged on the third guide rod; a second guide rod is fixed onto the moving base; a lifting base is slidably arranged on the second guide rod; a connecting rod assembly is arranged on the movingbase; a channel is arranged on the lifting base; a cross rod penetrates through the channel; an adjusting assembly is arranged on the cross rod; and a moving assembly is further arranged on the lifting base. According to the laser welding equipment, through the hinge-joint cooperation of a center shaft and a limiting plate, the laser welding head can rotate together with a rotary rod, and a screwrod moves in an arc-shaped through hole, so that the angle of the laser welding head can be adjusted to meet different angle requirements, and the application range is enlarged; and through screwingdown a nut on the screw rod, the angle of the laser welding head can be locked, so that the welding can be carried out conveniently.
Owner:钟伟洋

Multi-directional adjustment welding device for laser-MIG/MAG (metal-inert gas/metal active gas) welding equipment

Disclosed is a multi-directional adjustment welding device for laser-MIG/MAG welding equipment. A laser lighting gun and a welding gun of the laser-MIG/MAG welding equipment can be assembled on the multi-directional adjustment welding device, a first driving motor drives a first lead screw to enable a first support to move along two linear flat guide rails in a vertical reciprocating mode in a Z direction, a second driving motor synchronously drives a second lead screw to enable a right-angled seat to move along a positioning cylinder in a horizontal reciprocating mode in an X direction, a third driving motor drives a third lead screw to enable a third support to move along two round guide rails in a horizontal reciprocating mode in a Y direction, and a fourth driving motor drives a clamping seat to move along long-sector guide rails towards the arc surface of a sector in a reciprocating mode. The Z direction, the X direction and the Y direction form a three-dimensional coordinate system and form the four-directional, namely, multi-directional adjustment when combined with the A direction. The welding gun is fixed onto a welding gun clamp and the laser lighting gun is fixed onto the first support. The multi-directional adjustment welding device for the laser-MIG/MAG welding equipment has the advantage of achieving the four-directional position adjustment of the laser lighting gun and the welding gun and being novel and unique in structure.
Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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