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

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.

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 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 provides a pressed-in sealant for a blast furnace and a preparation method thereof and aims to solve the problem that existing sealants have a poor densification effect. The pressed-in sealant successively comprises, by weight, high aluminium bauxite, gangue, pyrophillite, flint clay, kyanite, clay, high alumina bauxite powder, silicon carbide powder, quartz powder, graphite and modified sliicon-alumininm sol. The prepared sealant matrix has high content and good fluidity, can slowly wriggle in a small slit and has good permeability. The modified sliicon-alumininm sol has short bonding and hardening time, the strength is suitable, and a hardened product has elasticity and will not become hard and fragile or crack. The product has good endophilicity and excellent seal performance, and is firmly glued with a steel casing and a furnace lining to form an integral body so as to greatly prevent gas from fleeing along the slit.

The invention discloses a titanium-steel composite plate processing method based on transition layer control. Use a certain proportion of metal powder to mix evenly to prepare the transition layer; 4) Laser double-sided welding: after assembly and clamping, preheat the titanium-steel composite plate to 100~120 °C; use laser double-sided synchronous welding, and control the line energy during welding. , so that the two sides of the metal are evenly fused; 5) Fixed clamping and cutting: the processed composite board is fixed and installed, and cut according to the required length. The method improves the mechanical properties of the welded joint of the titanium-steel composite plate through the control of the transition layer, simplifies the existing welding technology, and realizes high-quality and efficient welding.