32results about How to "Achieve full penetration" patented technology

Provided is a double-sided laser titanium-steel clad plate full penetration welding method based on transition layer control. The method is suitable for welding of titanium-steel clad plates. The double-sided laser titanium-steel clad plate full penetration welding method based on transition layer control is provided in order to solve the problems that in the existing titanium-steel clad plate welding process, operation is complex, accumulated heat input is large, welding stress deformation is large, and the welding efficiency is low. The method comprises following steps that 1, semi-elliptical groove is prepared along a titanium-steel clad plate interface; 2, a welding area is cleaned; 3, a transition layer is prepared, wherein the transition layer is prepared by mixing a certain proportion of metal powder to be uniform; 4, laser welding is conducted on both sides, wherein after assembling and clamping are conducted, the titanium-steel clad plate is preheated to 100 DEG C to 120 DEG C, synchronous welding is conducted on the two sides with laser, and when welding is conducted, metal on the two sides is merged uniformly by controlling the linear energy. According to the double-sided laser titanium-steel clad plate full penetration welding method based on transition layer control, by means of control of the transition layer, the mechanical property of a welded joint of the titanium-steel clad plate is improved, an existing welding technology is simplified, and high-quality and high-efficiency welding is achieved.

The invention provides a full penetration weld method for a fillet joint single-face J-shaped groove of a box beam of a vibration screen. According to the full penetration weld method, a weld back-up member is not additionally arranged, a general welding robot having a linear locating function is selected, weld joint molten bath forming influence factors and quantitative factor indexes formed by the technical features of a weld joint molten bath are effectively controlled, it is guaranteed that molten bath forming can be continuously and stably controlled in the welding process, and full penetration of the fillet joint single-face J-shaped groove of the type is achieved. By the adoption of the full penetration weld method, the problems in the welding process of similar fillet joint single-face J-shaped grooves of box beams of vibration screens, permanent backing-up members are not allowed to be used, different degrees of incomplete fusion and incomplete penetration are caused when detachable baking-up members are adopted, and full penetration of the weld joint cannot be guaranteed are solved, the welding technology process is simplified, the comprehensive production cost is greatly reduced, the efficiency is greatly improved by about two times, the labor intensity of welding operators is greatly relieved, and the welding quality of products is improved.

The invention relates to the technical field of fracturing technologies implemented in petroleum extraction, and discloses a hydraulic oscillation fracturing technology for oil and gas wells. The hydraulic oscillation fracturing technology is characterized by at least comprising steps of 1), perforating fracturing modification target strata of the oil wells or the gas wells; 2), selectively utilizing compressible fluid as fracturing fluid and injecting the fracturing fluid in the target strata by the aid of phi88.9mm oil pipes with the displacement higher than 4.0m<3>/min; 3), injecting a certain quantity of fracturing fluid in a front fluid injection procedure after each stratum is fractured, then quickly stopping pumps, waiting for 30-60s after the pumps are stopped, repeatedly quickly stopping the pumps by 3-5 times in an integral front fluid injection stage, and sequentially increasing consumption of the fracturing fluid. The hydraulic oscillation fracturing technology has the advantages that the post-fracturing yields of the reservoir strata can be increased by the aid of the technology, a longitudinal complete penetration effect can be realized in longitudinal strong heterogenous reservoir stratum fracturing operation, and micro-fractures can be greatly opened in the micro-fracture developed reservoir strata.

The invention relates to an angle welding method of high penetration and a high against gas hole. The angle welding method of the high penetration and the low-spatter has the characteristics that themethod adopts CO2 protection welding with a front-wire solid-core welding wire and a back-wire flux-cored wire, the current is 300-450 A and 280-400 A, the voltage is 25-30 V and 28-40 V, the weldingspeed ranges from 0.8 m to 1.4 m/min, the length of the welding wire is 10-15 and 20-30 mm, and Mn content of the solid-core welding wire is less than or equal to 1.0%, the content of Si+Mn of the solid-core welding wire is larger than or equal to 1.0% and less than or equal to 2.5%, the content of Ti is 0.02-0.2%, the content of S in the flux-cored wire is 0.005-0.02%, and the content of boron is0.005-0.05%. The method is suitable for fillet welding seam welding of a steel plate with primer, full penetration of 12-16 mm thick plates can be achieved.

The invention provides a special backing plate for friction-stir welding and a welding method adopting the backing plate. A U-shaped or V-shaped welding leakage groove is formed in the center line of the special backing plate in the length direction. The welding leakage groove is located under a weld joint so that incomplete-penetration materials on the back of the weld joint can be squeezed into the welding leakage groove. The two sides of the welding leakage groove are bevels. The angles of the bevels are determined according to deformation of the plate. Through the special backing plate for friction-stir welding and the welding method adopting the backing plate, the incomplete-penetration materials on the back of the weld joint can be squeezed into the welding leakage groove; through the subsequent incomplete-penetration grinding procedure, the incomplete-penetration materials on the back of the weld joint are removed thoroughly, and complete penetration of the weld joint is realized. The two sides of the welding leakage groove are machined into the bevels used for conducting pre-welding predeformation on aluminum alloy plates so as to offset deformation generated in the welding process. Operation is easy. The adaptability is high.

The invention provides an aluminum alloy conductor pole manufacturing method. According to the method, a conducting body is manufactured firstly, specifically, extrusion forming, broaching forming and mechanical turning of a conducting rod are carried out; then a conducting head is manufactured, specifically, machining of the conducting head is mainly carried out; and finally, the conducting head and the conducting rod are connected through a no-keyhole stirring friction welding technology. By means of the aluminum alloy conductor pole manufacturing method, the problem of the welding quality of large-thickness small-diameter circular seams is solved, and the method has remarkable advantages compared with the prior art. By adoption of the conductor pole manufacturing method, the joint assembly design of the conducting rod and the conducting head as well as the no-keyhole stirring friction welding technology, the qualified rate of manufacturing of conductor poles is greatly improved, the production efficiency is improved, and the production cost is reduced. Tests prove that by adoption of the aluminum alloy conductor pole manufacturing method, the manufacturing dimension precision of the conductor poles meets the design requirement, weld joints are continuous and compact in texture, the defects including pores, impurities and keyholes are avoided, and automatic control is achieved in the production process; and the yield of one-time welding is increased from 40% to 95%.

The invention discloses a welding method of a heterogeneous titanium alloy T-shaped joint, which comprises the following steps of: 1, processing a to-be-welded part of a rib plate into a K-shaped groove, and fixing the K-shaped groove on a welding tool clamp; 2, adopting coaxial powder feeding type laser cladding, wherein lasers act on the to-be-welded area on the two sides of the T-shaped connector correspondingly, an MIG welding gun swinging periodically is arranged on the rear side of a laser beam, and the included angle between the MIG welding gun and the rib plate and the included angle between the laser beam and the rib plate are adjusted to be located on the same plane; 3, setting welding process parameters; and 4, introducing shielding gas in advance, conducting double-face laser cladding composite electric arc welding of the T-shaped connector, conducting synchronous different-direction welding on welding heat sources on the two sides, wherein electric arcs swing periodically, single-pass welding forming of the workpiece is achieved, and the shielding gas is continuously introduced for cooling after welding. The laser cladding powder is used for regulating and controlling configuration, the internal consistency of the welding seam is enhanced, the welding seam strength is improved, and cracks are restrained through components of the welding wire before solidification of a molten pool.

The invention relates to a Raschel blanket digital ink-jet printing method. The method comprises the following steps of 1, performing sizing: feeding a Raschel blanket subjected to pre-finishing treatment into a sizing device, carrying out pre-wetting treatment before sizing, and spraying white paste to the Raschel blanket by the sizing device, wherein the sizing device adopts a spraying sizing device capable of preventing blanket fluff from being pressed down, the white paste is composed of a synthetic thickener, water and a penetrant, and the viscosity of the white paste is 500-3000 CPS; 2, feeding the sized Raschel blanket into a digital ink-jet printing machine for ink-jet printing, wherein the printing procedure of the digital ink-jet printing machine comprises the steps that a designed pattern is called into printing software, the use amounts of all basic ink are automatically matched through an intelligent color matching and ink amount calculation method in the printing software, and the sized Raschel blanket is printed; and 3, feeding the Raschel blanket subjected to ink-jet printing into a pressure infiltration machine for pressure infiltration treatment.

The invention is suitable for the technical field of informatization work management, and provides a rectification work management system and method, and the system comprises: a first management subsystem which is used for the inspection and rectification work management of an inspection main body; the second management subsystem that is used for carrying out rectification work management by the rectification main body according to the inspection rectification opinions issued by the inspection main body; and the third management subsystem that is used for managing the rectification audit workof the audit subject. According to the embodiment of the invention, all work before patrol, during patrol and after patrol is effectively linked, full penetration and full coverage of rectification management are realized, and closed-loop management of a patrol preparation stage, a development stage, a rectification stage and an auditing evaluation stage is achieved.

The invention relates to an atomizing, spraying and sizing device and method for digital printing pretreatment of a high-pile fabric. A cloth guide roller mechanism is mounted on a rack and used for guiding and conveying the fabric; an atomizing and spraying mechanism is mounted on the rack, is positioned above the cloth guide roller mechanism and is used for spraying white paste to the fabric; the atomizing and spraying mechanism comprises a size vat, a paste supply pump and multiple rows of atomizing nozzles; the size vat is used for containing the white paste; the paste supply pump is used for conveying the white paste in the size vat to the atomizing nozzles; each row of atomizing nozzles is provided with a set of transverse moving mechanism; and the transverse moving mechanisms drive the atomizing nozzles in the same row to move horizontally in the fabric breadth direction. When the atomizing, spraying and sizing device is used for conducting sizing pretreatment on the high-pile fabric, on the premise that the pile is not pressed down, the surface of the fabric can be evenly provided with 30 percent to 80 percent of white paste, so that a good foundation is provided for subsequent ink-jet digital printing.

The invention discloses a convenient construction method for a tunnel structure. The construction method is characterized by including the steps of: step a, blasting the mine on a place where a tunnel is excavated, laying a horizontal guide rail on the exploded place, and excavating with an excavating device of the horizontal guide rail; step b, blasting while excavating to excavate gradually; step c, using a boring device on the horizontal guide rail to bore through holes in non-through tunnel to realize supply of wind, water and electricity on the opposite side, step d, arranging a protective wall on the opposite through tunnel in the previous step; step e, after arranging the protective wall, withdrawing cables, wind ducts and water pipes, blasting the non-through tunnel; and step f, after blasting, using excavation equipment for excavating. The construction method is safe and convenient, and improves the working efficiency, and avoids re-access of wind, water and electricity works for construction from the opposite side of through tunnel. Manpower, physical and time investment is reduced, and sustainable and stable development of mine construction and production can be maintained.

The invention discloses a driving type hydraulic oscillator for well drilling. The driving type hydraulic oscillator comprises an upper shell and a lower shell, wherein a shaft sleeve is fixedly arranged at the top of the upper shell; a cleaning shaft fixedly penetrates through the shaft sleeve; a handle block is connected to the top end of the cleaning shaft; a cleaning rod is mounted at the bottom of the cleaning shaft; a cleaning brush is connected to the cleaning rod; an anti-collision mechanism is fixedly mounted at the bottom end of the cleaning shaft; and a cleaning mechanism is arranged on the outer top wall of the upper shell. According to the driving type hydraulic oscillator, the handle block is held by a hand to pull the upper shell, then the cleaning shaft is driven to move upand down, the cleaning rod moves up and down to drive the cleaning brush to move, and then the lower shell is cleaned.

The invention provides a pressure-displacement cooperative control stationary shoulder friction stir welding spindle head device. The device is characterized in that a shell is of a hollow structure, a rotating shaft is arranged in the shell through a bearing pack, and the tail end of the rotating shaft is connected with the head end of a welding pin through a cutter handle; an outer piston is connected with the lower portion of the shell, an oil seal cover is fixedly connected with the tail end of the shell, the oil seal cover is of a hollow structure, and an oil cavity is formed among the outer piston, the shell and the oil seal cover; and a shoulder fixing ring is fixedly connected with the bottom of the outer piston, a shoulder transition ring is connected with a static shoulder through the shoulder fixing ring, and the welding pin penetrates through the static shoulder and extends out of the static shoulder. The device realizes full penetration of a friction stir welding seam, is stable in static process, and has the advantages of compact structure, flexibility and the like.

The invention discloses a molybdenum tube electrode and stainless steel electrode support welding device and a welding process. The molybdenum tube electrode and stainless steel electrode support welding device comprises a bottom plate; a molybdenum tube electrode tray tool is arranged on the bottom plate; a plurality of molybdenum tube electrodes are placed on the top of the molybdenum tube electrode tray tool in parallel at intervals; the two ends of each molybdenum tube electrode extend out of the molybdenum tube electrode tray tool; stainless steel electrode support pressing tools are symmetrically arranged on the two sides of the molybdenum tube electrode tray tool; the stainless steel electrode support pressing tools comprise a lower pressing tool used for pressing the bottom of a stainless steel electrode support on the bottom plate and an upper pressing tool used for pressing the top of the stainless steel electrode support on the two sides of the molybdenum tube electrodes; and the welding process comprises the steps of winding an Ag54Cu21Pd25 brazing wire on to-be-welded pipe orifices of the molybdenum pipe electrodes and the like. According to the molybdenum tube electrode and stainless steel electrode support welding device, the bonding strength and the sealing performance of the molybdenum tube electrodes and the stainless steel electrode support can be ensured; the flow of the internal cooling water path can be ensured; and the high-energy particle beam extraction capability of an ion source can be further improved.

The invention discloses a diesel engine rack single-piece double-face double-arc synchronous gas shielded welding process, solves the problems of diesel engine rack single-piece poor welding seam quality and low production efficiency in the prior art, and has the beneficial effects of ensuring the welding seam quality and realizing full penetration welding without leaving a gap. According to the specific scheme, the diesel engine rack single-piece double-face double-arc synchronous gas shielded welding process comprises the steps that diesel engine rack single-piece protection is conducted through protection gas in the backing welding process so as to ensure that base metal for backing is melted, and argon and carbon dioxide in the set proportion serve as the protection gas in the filling welding and capping welding process, so that welding spatter is avoided in the forming and welding process of each layer of welding seam, and welding currents are different in the backing welding, filling welding and capping welding processes.