56results about How to "Reduce the amount of splatter" patented technology

The invention relates to laser welding and discloses a process method for welding aluminum and aluminum alloy material by laser. The process method comprises steps of: (1) selecting an Nd:YAG laser with high beam quality and high energy density; (2) adopting double-beam laser to weld aluminum and aluminum alloy material, wherein the distance between the two beams is 0.6-1.0 mm, and the energy ratio of the two beams is larger than 1:1; (3) surface treatment of a material to be welded: removing greasy dirt and dust with an organic solvent and removing an oxidation film by mechanical cleaning and/or chemical cleaning; and (4) utilizing the two-beam laser to weld the aluminum and the aluminum alloy material. A needle body, a sleeve and a lead of the invention are manufactured into a whole; therefore, the invention solves adaptability of the laser welding to assembly precision, enhances the stability of welding process and improves welding line quality.

The invention discloses a bifocus laser and InFocus arc hybrid welding method, and relates to a welding method. The method includes the steps that (1) a to-be-welded workpiece is polished or washed; (2) the spot diameter is set to range from 0.1 mm to 0.5 mm, and the defocusing amount ranges from -3 mm to +3 mm; (3) welding parameters are set, wherein the arc current ranges from 50 A to 900 A, an included angle formed between a welding gun and the vertical direction ranges from 25 degrees to 55 degrees, the welding speed ranges from 100 mm/min to 1000 mm/min, the wire feeding speed ranges from 100 mm/min to 600 mm/min, the protection gas is inert gas, and the flow of the protection gas ranges from 15 L/min to 30 L/min; and (4) a switch is started, and laser-InFocus arc welding is carried out. According to bifocus lasers and InFocus, as the InFocus arc fusion depth is larger, and a key hole can be formed through welding, when a medium-thickness plate is welded, the lasers can directly act on the bottom of the key hole generated by the InFocus arc, and the fusion depth is continuously increased.

The invention belongs to the technical field of welding of robots, and in particular relates to an autonomous mobile robot system for metal-inert-gas (MIG)/metal-active-gas (MAG) multilayer multipass welding of a large thick plate. The system comprises a robot body, a control system and an MIG/MAG welding system, wherein the robot body comprises a crawling mechanism and an operating mechanism; the control system comprises a sensing system, a robot body control box and a robot master control system; the MIG/MAG welding system comprises an MIG/MAG welding gun, an MIG/MAG welding power supply, a wire feeding machine, shielding gas and a weld cooling system; and the robot body, the control system and the MIG/MAG welding system are connected with one another through cables. The system has the advantages that a contact type magnet-wheel adsorption and non-contact type clearance adsorption composite mode and a three-wheel full-drive wheel type movement mode are used by the crawling mechanism, so that a robot can autonomously and flexibly move at all positions on the surface of an operating object, can be reliably adsorbed and can perform all-position welding operation, and the system is high in comprehensive performance.

The invention discloses a medical tray disinfecting instrument for a hospital nursing department. The instrument comprises a supporting bottom plate, a brushing and cleaning device and a drying device, wherein a sewage frame is placed on the upper end surface of the left side of the supporting bottom plate, and the top of the right end of the supporting bottom plate is provided with the brushing and cleaning device; the drying device is installed on the top of the left end of the supporting bottom plate; and the drying device comprises a drying side plate, a drying sliding column, a sliding push column rod, a drying sliding plate, a drying electric sliding block, a drying push rod and a drying machine. According to the instrument, the problems that in the prior art, when a medical tray isbrushed, the workload is large, the medical tray is difficult to wash, the tray is poor in brushing and cleaning effect, the tray cannot be effectively fixed when the tray is brushed and cleaned, a brushing and cleaning solution is seriously splashed when the tray is brushed and cleaned, manual turnover and water pouring is carried out on the brushed and cleaned tray, the trays are manually driedare solved, and the functions of all-directional locking of the medical tray, comprehensive brushing and cleaning of the tray, and turnover and drying of the tray are achieved.

The invention relates to a Si-Ca-Fe cored-wire sandwich layer combination, the combination is composed of calcium powder whose percentage by weight is 10%-60%, refining slag 40%-90% and ferrous powder 0-30%, wherein the refining slag can lower the vapor tension which is produced by calcium in the reaction process, lower the spraying amount of molten steel, and increase the utilization ratio, the refining slag adopts a calcium oxide and aluminum oxide slag system, which can exist in the molten steel in molten state, the concentration is smaller than that of the molten steel, inclusions are absorbed along the refining slag floats upward, which is very beneficial for purifying the molten steel, the ferrous powder not only can enlarge the specific weight of the cored-wire, which is beneficial for sinking the cored-wire, but also can play the role which is same with that of the refining slag, and the availability ratio of the calcium is further increased.

Provided are a plasma-MIG welding method and a welding torch that are capable of reducing spatter amount without relying on control of the MIG welding power supply. The plasma-MIG welding method employs a plasma-MIG welding device configured from: a plasma torch section that includes a plasma nozzle and a plasma electrode; and an MIG torch (9) that includes an MIG tip and a welding wire (10). The plasma torch section and the MIG torch (9) are arranged so as to face in different directions at a predetermined distance from one another. The plasma-MIG welding method is characterized in that a plasma arc (21) is made to overlap locally with the tip portion of the welding wire (10) in order to carry out heating, and in a state in which melting of the welding wire (10) has been promoted, MIG welding is carried out without short-circuiting between a workpiece (W) and the tip (11) of the welding wire (10), said welding wire (10) being a consumable electrode.

The invention relates to automatic nanometer material production equipment. The automatic nanometer material production equipment comprises a base, a main body, a driving shaft and a second stirring disc, and also comprises an anti-splashing mechanism and a mixing mechanism; the anti-splashing mechanism comprises a first driving assembly, a first transmission rod, a cover plate, two supporting sleeves and two lifting rods; the mixing mechanism comprises a storage groove, a second driving assembly, a connecting rod, a lifting ring, a rotating sleeve, a first stirring disc, a limiting assembly and an annular groove; the first driving assembly comprises a first motor, a second transmission rod and a third transmission rod; the second driving assembly comprises a second motor, a screw rod anda moving block; the limiting assembly comprises a limiting groove and a limiting block. In the automatic nano-material production equipment, a container for containing raw materials can be covered bythe anti-splashing mechanism, so that the splashing quantity of the raw materials in the working process of a dispersion machine is reduced, the loss of the raw materials is reduced, the stirring range of the dispersion machine is expanded by the mixing mechanism, and the dispersion effect of the dispersion machine is improved.

The invention discloses a soldering tin preheating principle and application. According to the invention, a bonding wire comprises a solder layer and scaling powder arranged in the solder layer, the soldering tin preheating principle is applied to carry out preheating treatment on solder before soldering iron is used for welding tin at a high temperature, and enables the solder to become the soft state after preheating from the solid state before preheating; after the solder layer and the scaling powder arranged in the solder layer are preheated, the solder layer is enabled to become soft from the solid state, and during the high-temperature welding process, the soft solder layer relieves the sharp expansive force of the scaling powder, weakens the power of welding spot explosion caused by instantaneous, rapid and sharp heated expansion of the scaling powder during the welding process, and reduces the phenomenon that welding spot explosion generates tin balls, and the tin balls splash to the surfaces of electronic elements to cause a short circuit. The preheating time, the temperature, the supply current and the power-on or power-off states can be intelligently controlled according to the production demands, the intelligent operation degree is high, the tin ball splashing quantity during welding spot explosion can be controlled and greatly reduced, the operation is very safe, the yield of the electronic elements is high, the quality effect is excellent, and the production cost is lowered.

The invention discloses a method for eliminating laser welding pores of an aluminum-lithium alloy T-shaped joint, and relates to the field of material processing engineering. The method aims at solving the problem that pores are prone to occurring in the laser welding process of the aluminum-lithium alloy T-shaped joint. According to the method, a double-beam rotary laser welding head is adopted to realize the rotary motion of double light beams through an internal lens module, and the rotary motion can comprise the rotary motion of the double light beams around a self-axis and the rotary motion of the double light beams around a revolution axis; the rotating double light beams enable a keyhole to be more stable to a certain extent, and the keyhole is relatively not prone to being closed;meanwhile, the collapse of a keyhole wall is avoided due to the rotation effect of the double light beams, so that the formation of process pores is reduced; active regulation and control of molten drop transition can be realized through high-frequency rotation of two beams of laser during double-beam rotary laser welding; and meanwhile, the rotating laser beam can refine grains, so that the mechanical property of the aluminum-lithium alloy T-shaped joint is improved. The method is applied to the field of welding.

The invention discloses an aluminum alloy material for new energy power battery shells and covers and application of the aluminum alloy material, and relates to the technical field of new energy batteries. The aluminum alloy material is composed of following element components including Si, Mg, Sr, Mn, Be, Zr, Sb, Er, Pr, Tb, Dy, B, Ga and Al. An aluminum alloy for the new energy power battery shells and covers is excellent in comprehensive performance; the components, content and preparation process of the aluminum alloy are overall improved and optimized, the application performance of prepared new energy power battery shell and cover products is improved remarkably, substantive breakthroughs are achieved especially on the index aspects of tensile strength, prescribed non-proportional extension strength, percentage elongation after fracture, stability, punching performance and welding performance, and the application occasion and field are wide; and the active demands of the new energy market for high-performance power battery cover and shell products can be greatly met.

The invention relates to the field of welding, in particular to a laser enhancement device and an electric arc welding system. The laser enhancement device comprises an optical element, a focusing lens, an optical connector and a driving unit. Laser light can sequentially pass through the optical connector, the optical element and the focusing lens to form a laser beam. The driving unit can drive the optical element to rotate so as to rotate the laser beam. The electric arc welding system comprises the laser enhancement device. The laser beam is driven by the driving unit to rotate along a preset path. Molten drops are transitioned at uniform sizes and frequencies. The laser beam heats the surface of a to-be-welded parent metal zone while cleaning the surface of the to-be-welded parent metal zone, so that the temperature of the surface of the to-be-welded parent metal zone is increased, the stability of the welding process is improved, and the welding quality is improved; and electric arcs are more stable by increasing the temperature of gas of the to-be-welded zone. The welding quality with the same fusion depth is achieved with low current, and low-spatter welding is achieved.

The wire has a steel outer shell which is filled with a flux in an amount of 10-20 mass% as the ratio to the total mass of the wire. The flux contains 10-60 mass% of titanium and titanium oxide in terms of TiO2, 0.5-10 mass% of sodium compound in terms of Na2O, and 0.5-10 mass% of potassium compound in terms of K2O. Additionally the specific surface area of the titanium oxide is adjusted to 0.4-2.0 m2/g.To provide a titania-based flux cored wire for arc welding which gives excellent welding workability and weld metal performance, and has less moisture absorption quantity.

The sealed compressor of the invention comprises the following components: a driving unit which is arranged at the inner side of the sealed container that is formed with an engine oil storing space at the bottom surface; a compressing unit which receives the driving force of the driving unit and do compression to the cryogen; a rotating shaft which transfers the driving force of the driving unit to the compressing unit and guides the engine oil in the engine oil storing space to the tucking part of the compressing unit and the driving unit; an eccentric shaft part which is arranged eccentrically at the lower end of the rotating shaft; and an oil sucking component which is connected to the lower end of the eccentric shaft in order to suck the engine oil in the engine oil storing space to the engine oil flow circuit, the oil sucking component comprises the following components: a press-in part which is arranged parallel to the length direction of the rotating shaft with the mode that the press-in part is combined with the eccentric shaft part; and an absorbing part which sustains a straight lien shape between the upper end and the lower end, and bends from the lower bending of the press-in part according to the mode that the center of the lower end and the axle core of the rotating shaft are consistent.