67results about How to "Solve welding difficulties" patented technology

The invention provides a cold rolling method for high-silicon electrical steel. The method comprises conventional processes of a first cold rolling for a hot rolled plate after being treated with acid washing or a second cold rolling with annealing during operation, decarbonization annealing and recrystallization annealing, etc., and is characterized in that the hot rolled plate before being treated with acid washing is done with welding end to end and then continuous endless rolling is done by a mill with multi-stands; a warm rolling is realized by that mechanical energy is transformed into heat energy during the rolling and the temperature of the steel plate raises; the tension among each mill stand is 100-300 N/mm <2> and 30-80 N/mm<2> for the last mill stand; the draft is 15-30 percent and 5-15 percent for the last mill stand and the outlet speed of the rolling mill is no less than 500m/min and the thickness of the finished product is 0.2-0.8mm. By adopting a plurality of mill stands to realize the warm rolling, the invention effectively solves the breakage occurred in edges; the last mill stand is served as the pass mill stand of finished products so as to guarantee the quality of the surface of the steel strip; large tension is adopted during the rolling so as to ensure that a forward slipping area can be reduced and deformation bands are increased. Compared with the method by a single mill stand, the method of the invention prolongs the cycle of roll changing, reduces the labor intensity, shortens the production cycle and improves productivity and quality of steel plates. In addition, the method of welding from head to tail for transition with low-silicon steel can effectively solve the problem of breakage during the welding of the high-silicon electrical steel.

The invention discloses an ultralight lithium ion battery current collector, comprising a PET layer, wherein two ends of the PET layer are respectively connected with a U-shaped sheet metal, and the side surfaces of two sides, located between the sheet metals at the both ends, of the PET layer are plated with an upper metal layer and a lower metal layer. The lithium ion battery current collector of the invention adopts the PET layer as a matrix layer, and the sheet metals at the both ends are of U-shaped structure, the weight and occupied space of the current collector are greatly reduced, soenergy density in increased; moreover, since two side surface of the polymer matrix layer are plated with the metal layers, so burrs are not generated during processing and cutting, and the safety performance of a battery is improved; meanwhile, the current collector of the invention has more excellent processability compared with conventionally industrialized current collectors.

The invention introduces a welding method of a titanium welded tube for petrochemical engineering. A titanium belt is subjected to on-line continuous cold roll forming to form closed bore diameter and then fed into a welding case body, a single gun is adopted for argon tungsten-arc welding, argon tungsten-arc welding is carried out by adopting appropriate welding parameters such as welding inclination angle, welding current and voltage, so as to weld the molded titanium belt into a straight-seam titanium welded tube; and during the welding process, argon gas is used for carrying out internal and external protection on the welded tube, protecting the single gun and protecting a welding support cover, so that the titanium welded tube for petrochemical engineering is prepared. The welding quality, surface quality and the like of the straight-seam titanium welded tube produced by the method can meet the requirements of titanium welded tubes for petrochemical engineering such as PTA (Pure Terephthalic Acid) engineering, the titanium welded tube can be used for replacing seamless titanium tubes for the petrochemical engineering industry, and the welding difficulty of the titanium welded tube with small tube diameter and super thick wall can be solved; and compared with a seamless titanium welded tube preparation method, the method provided by the invention has the advantages of less working procedures, simplicity in operation and easiness for realization of large-batch production.

The invention discloses a novel one-eighth sphere corner aluminum alloy end socket. The one-eighth sphere corner aluminum alloy end socket is used for replacing eight top corners of a vehicle-mounted rectangular box, namely the eight top corners of the vehicle-mounted rectangular box are replaced with eight spherical round corners, straight edge sections are additionally arranged on three edges of the spherical round corners, and the three edges of the spherical round corners and three edges of the vehicle-mounted rectangular box are assembled and spliced in the same plane conveniently; and the spherical round corners are one-eighth spherical round corners. The novel one-eighth ball corner aluminum alloy end socket is mainly used for solving the problems that the eight top corners of the vehicle-mounted rectangular box are concentrated in stress, difficult to weld, low in welding efficiency, prone to breakage by impact, not attractive enough and the like, and actual use requirements are met.

The invention provides a method for welding a capillary tube heat exchanger tube sheet and capillary tubes. The method for welding the capillary tube heat exchanger tube sheet and the capillary tubescomprises the following steps that 1, a tool is machined; 2, the stainless steel capillary tubes with high temperature resistant metal wires penetrating through the insidesarearranged according to requirements of a capillary tube heat exchanger and penetrate through small holes at the bottom of the tool; 3, metal is added into the tool; 4, the metal is melted; and5, the tool is removed, the metalwires are extracted, machining and assembling are further conducted, and overall manufacturing of the capillary tube heat exchanger is completed. The method for welding the capillary tube heat exchanger tube sheet and the capillary tubes has the advantages that it is ensured that the problem that the welding of the capillary tubes and the tube sheet of the capillary tube heat exchanger is difficult can be solved while an integrated tube sheet and capillary tube channel structure is obtained by melting solidification, and a microchannel required by the capillary tube heat exchanger is formed; and the cost can be effectively reduced, and the production efficiency is improved.

The invention provide a preparation method of an ultra-large polytetrafluoroethylene seal ring, which comprises the steps of (a) cutting the two ends of a polytetrafluoroethylene plate to form inclined planes with the same angle, and (b) welding the two ends of the polytetrafluoroethylene plate together to form the ultra-large polytetrafluoroethylene seal ring, wherein the external diameter of the ultra-large polytetrafluoroethylene seal ring is 2-10m. The ultra-large polytetrafluoroethylene seal ring can be obtained with the adoption of the preparation method.

The invention discloses automatic robot point welding equipment. The equipment comprises a base, a fixing tool, a mechanical support arranged on the base, and a welding gun connected with the mechanical support. The fixing tool comprises a base plate, and workpiece installing positions arranged on the front face and the back face of the base plate. The workpiece installing positions are connectedwith a first rotating motor and a straight air cylinder which can drive the workpiece installing positions to move. The base plate is installed on the base through a position changing machine. The mechanical support comprises multiple mechanical arms connected through power assemblies. The welding gun comprises an upper welding gun body and a lower welding gun body which can be opened or clamped.According to the equipment, by means of the mechanical structure, the problem of welding difficulty is solved, welding of all angles and all positions of products is achieved, and the welding qualityis ensured; the multiple welding stations are arranged, while welding is achieved, workers can take and load workpieces synchronously, non-stop welding can be carried out, and the welding efficiency is improved substantially; and a point welding gun head is arranged, welding is carried out by means of the clamping manner, and the welding efficiency is improved.

The invention relates to the field of lighting fixtures, in particular to a new type of full-circumference LED lamp, which is composed of a lamp tube shell, a wick installed inside the lamp tube shell, and end caps connected to both ends of the lamp tube shell; the wick is composed of a polygonal column The wick bracket is composed of the LED chip installed on the wick bracket and the copper foil wire connected to the LED chip. The drive circuit assembly is arranged on the end cover, and an insulating layer is provided between the surface of the wick bracket and the copper foil wire. , the wick is connected to the drive circuit assembly through an elastic contact and a temperature sensor arranged on a conducting member; according to the above structure, the present invention solves the problem of difficult welding of the wick base material and the LED chip and copper wire, and also avoids The circuit in the LED lamp is too complicated, and it is more convenient to install, which makes the internal structure of the LED lamp simpler and more compact, and the safety and illumination range are also greatly improved.

The invention discloses a technique for processing a joint where box steel beams with relatively large slenderness ratios of sections are in butt joint. A rear plate is reserved on the side face for butt joint of the box steel beams, an upper flange plate and a lower flange plate are provided with dual connection lug plates and are fixedly connected by means of a connecting plate, flat welding and vertical position welding are used for positioning, so that the upper flange plate, the lower flange plate and two webs of each box steel beam are obtained, and then vertical position welding and horizontal position welding are used for welding a rear weld plate. By the adoption of the technique, the situation that potential quality hazards or defects are caused by over-head position welding occurring during installation of the box steel beams can be reasonably avoided; in addition, installation is convenient, a bolt connecting plate with holes does not need to be additionally arranged on the side face, and thus good economical benefits and good construction period benefits are obtained.

A welding-free unequal-thickness wheel type engineering machinery wheel and a manufacturing technology for the same are provided. A round steel plate with a certain size is molded through a series offorming technologies; welding is not required during all the forming and processing procedures; a wheel type engineering machinery wheel with a traditional way of wheel spokes, wheel rim cylinders andbead seat combined welded together can be replaced; in the welding-free unequal-thickness wheel type engineering machinery wheel and the manufacturing technology for the same, the wheel spokes, the wheel rims and the bead seat are integrated, so great overall surface quality can be achieved; deficiencies of welding difficulties and overall strength deficiencies during the welding and assembling can be overcome; wheel manufacturing technology processes and production management can be greatly simplified; wheel product strength and precision can be greatly improved; and pollution caused by welding can be eliminated.

The invention discloses a self-healing parallel capacitor structure. The self-healing parallel capacitor structure comprises a top cover, an aluminum tank, an element, a pressure relief pipe, a bottom cover, an insulating copper belt and resin, wherein the top cover is arranged at the top of the aluminum tank; the bottom cover is arranged at the bottom of the aluminum tank; the aluminum tank is internally equipped with the insulating copper belt and the element; a hollow thin-wall circular ring is arranged in the middle of the upper part of the bottom cover; one end of the pressure relief pipe is connected with the hollow thin-wall circular ring and the other end of the pressure relief pipe is connected with the top cover; a connection part of the pressure relief pipe and the bottom cover is in interference fit and has no gap, and a pressure relief channel is formed; a ladder-shaped round structure is arranged at a connection part of the hollow thin-wall circular ring and the bottom cover; the element is supported by the ladder-shaped round structure; the insulating copper belt is connected with the top cover through welding; the insulating copper belt is distributed at the outer side of the element; gaps among the aluminum tank, the top cover, the bottom cover and the element are filled with resin. According to the self-healing parallel capacitor structure disclosed by the invention, problems that pressure relief and welding are difficult are solved; the self-healing parallel capacitor structure is simple in structure and convenient in assembling; the product has a good heat dissipation property and stable performances, is safe to operate and is long in service life.

The invention discloses a method for installing a Co40 cushion block on a water beam in a walking beam type heating furnace. An extending part is additionally arranged on the lateral part of a clamping block; a first welding part is arranged between the extending part and the Co40 cushion block; the Co40 cushion block and the clamping block are fixedly connected through the first welding part; the clamping block and the water beam are connected through a second welding part; the first welding part and the second welding part can form an integral welding part; and two ends of the Co40 cushion block and the water beam are integrally welded. The method has the following advantages: the extending part is arranged on the side of a force bearing point of the clamping block, and the cushion block is welded with the same side of the force bearing point of the clamping block, so that the fracture resistance and the bending resistance of the clamping block can be greatly improved; and in addition, the difficulty in welding between the Co40 cushion block and the water beam is overcome, and the installing stability of the Co40 cushion block is further ensured.

The invention relates to a welding process of a valve seat and a valve body, in particular to a welding process of a three-way valve seat and a valve body of a supercritical thermal power unit; the welding process comprises the following steps that the beneficial impact of multi-layer welding is fully utilized, multi-layer welding is adopted, and a latter layer plays the roles of dehydrogenating and improving the tissue of a heat affected zone to a former layer; heat input is controlled through a method in which low welding current welds more quickly, and the heat input of welding is strictly controlled; and high-strength steel is more sensitive to the heat input of welding, and over heat input can reduce the toughness of a welding connector and thus reduce the anti-cracking performance. Post heat treatment is carried out soon after welding, so that cold cracks are prevented from generating in a period of time after welding, and the welding requirements are met. According to the welding process, the problem that WB36 and F6a special steel welding is difficult is fully solved, cracking and other phenomena after welding are avoided, and the weld seam quality can be fully ensured.

The invention relates to a welding method of a heterogenous metal between a stainless steel pipe and a copper fin, which comprises the following steps of: carrying out necessary tests and leak detection for parts to be welded; finishing the welding of the parts by applying a special argon arc welding process; and inspecting according to a corresponding inspection condition to ensure that a product satisfies the use requirement of a space environment simulation test. The method is particularly beneficial to the splice welding of the stainless steel pipe and the red copper fin in a heat sink, and an obtained weld can still keep vacuum tightness under the condition of long-term cool-heat exchange at high and low temperatures.

The invention relates to a bearing plate component. The bearing plate component comprises a bearing plate I and a bearing plate II; the bearing plate I is fixedly connected with an air chamber bracket assembly; the bearing plate II is fixedly connected with a plate spring base; the bearing plate I and the bearing plate II are connected by a bolt; the bearing plate I is provided with a connecting hole I; the bearing plate II is provided with a connecting hole II; the connecting hole I and the connecting hole II are oblong hole structure; and the axis of the connecting hole I is perpendicular to the axis of the connecting hole II. The bearing plate component has the advantages of simple structure, flexible adjustment, smooth welding, and high production efficiency.

The invention provides a novel tower crown structure of a main tower. The novel tower crown structure comprises a tower crown body, the tower crown body is of a three-section segmented structure and is sequentially segmented into a first tower crown section, a second tower crown section and a third tower crown section in the height direction of the tower crown body, wherein the first section of tower crown and the second section of tower crown are sectioned from the starting point of the tower crown slope section, and the first section of tower crown and the second section of tower crown are welded and fixed; the second section of tower crown and the third section of tower crown start to be sectioned on the slope section, reinforcing transverse partition plates are arranged at the sectioning positions, and connecting and fixing plates are arranged at the reinforcing transverse partition plates; and the second section of tower crown is fixedly connected with the third section of tower crown through a connecting and fixing plate. The invention further provides a sectional installation method of the tower crown structure. The method has the advantages that a sectional manufacturing and mounting process is adopted, so that manufacturing of the tower crown is facilitated, welding quality is guaranteed, transportation is facilitated, transportation safety is guaranteed through loading and fixing, hoisting is facilitated, mounting safety and mounting precision are guaranteed through fixing, later stay cable construction hoisting is facilitated, and cost is saved.

The invention discloses a surface treatment method for improving the welding properties of Al2O3 ceramic and Ti6Al4V alloy. The method comprises the following steps: (1), preparing Ni-Ti alloy layer on the surface of the Ti6Al4V alloy from a Ni-Ti alloy target material by adopting a double glow plasma surface metallurgy method, wherein the Ni-Ti alloy layer comprises a Ni-Ti deposition layer and an inter-diffused layer; (2), injecting Ti ions on the surface of the Al2O3 ceramic through an ion injection method; and (3), welding the Ti6Al4V alloy prepared in the first step and the Al2O3 ceramicsubjected to surface treatment in the second step in vacuum diffusion welding equipment. The method can directly realize vacuum diffusion welding between the Al2O3 ceramic and the Ti6Al4V alloy through the treatment of the double glow plasma surface metallurgy method and the ion injection method, is high in efficiency, and can greatly improve the application of vacuum diffusion welding to the welding technology of the Al2O3 ceramic and the Ti6Al4V alloy.

A non-welding unequal-thickness wheel of a wheel type construction mechanical vehicle comprises a rim, a bead seat and a spoke. The rim and the bead seat are integrally formed through spinning, and the bead seat and the spoke are integrally formed through forging and pressing. The wheel is finally formed after multiple procedures with spinning as the main procedure, automatic production can be conveniently achieved, and machining precision is high. The spoke and the rim are formed through spinning of one blank material and are free of any assembling joint face, welding line and solder filler, the structure is fine, and the strength is improved. A welding link is omitted in the machining process of the wheel, the difficult welding problem of high-strength steel can be solved, and the defects in hot rolling, welding and grinding are overcome; meanwhile, the welding link is omitted, so that sparks, dust and other pollutions caused by welding are eliminated; and the problem that rim weld positions and spoke weld positions are prone to cracking is solved, and potential traffic safety hazards are greatly reduced.

The invention, which belongs to the technical field of hydraulic control, relates to an electrohydraulic gyrator. The electrohydraulic gyrator comprises a motor and an oil storage tank, a gear pump is arranged in the oil storage tank, and is connected with the motor through a coupling, the other end of the gear pump is connected with a hydraulic manifold block, the upper part of the oil storage tank is provided with an air filter, the electrohydraulic gyrator also comprises a rotary gear, an oil cylinder, a piston and a rack, and the oil storage tank is a cylinder. Since the oil storage tank of the electrohydraulic gyrator is modified into the cylinder, the cylinder does not need to be welded, only the joints between the cylinder and the surrounding parts need to be welded, consequently, the welding area is reduced compared with the old product, and thereby the problems of the electrohydraulic gyrator, including difficult welding and easy oil leakage, are effectively solved.

The invention provides a welding process for wall bars of a steel bar cage. The process particularly comprises the steps of arranging welding of two main reinforcements after a main reinforcement of the entire steel cage is laid. The main reinforcement and two side bars of reinforcement cage are welded at 90 degree or 135 degree. The welding process has the advantages of easy on-site construction,easy operation, high welding qualification rate, and can meet the design requirements of standard specifications.