6results about How to "Guaranteed impact performance" patented technology

The invention relates to a thick plate winding drum groove multi-machine collaborative welding method in the technical field of crane manufacturing, which comprises the following steps of: rolling a thick plate into winding drum sections, and forming a Y-shaped groove at a welding seam; the winding drum sections are placed on a supporting frame of multi-machine collaborative welding equipment, and it is guaranteed that the Y-shaped grooves are placed upwards; a ceramic gasket with a forced welding line forming groove type structure is pasted on the back face of the Y-shaped groove; adjusting multi-machine collaborative welding equipment according to the position of the welding seam; an MAG welding gun of the multi-machine collaborative welding equipment is used for welding the welding seam with the gap larger than 1.5 mm; one SAW welding gun in front of the multi-machine collaborative welding equipment and two SAW welding guns arranged in parallel behind the multi-machine collaborative welding equipment are used for welding the weld joints at the same time; according to the method, the welding seam of the thick plate roll simple groove is welded in an MAG + SAW composite welding mode, efficient welding of seam filling, backing welding and filling welding is achieved, the manufacturing period is greatly shortened, and the manufacturing efficiency is improved.

The utility model discloses an intelligent temperature, humidity and pressure sensor, which is characterized by comprising a shell structure, a connector, a protective cover, an analog board, a main board, a probe board, a pressure sensitive element and an upper cover structure, the analog board, the main board and the pressure sensitive element are accommodated in the shell structure, and the probe board extends out of one end of the shell structure, is in contact with the environment and is used for measuring environment temperature and humidity information; the main board is used for data acquisition and communication control, and the analog board is used for power conversion and analog current driving; the hollow part of the upper cover structure accommodates the connector, and the connector is protected on the opposite side through the protective cover; the pressure sensitive element is used for measuring environment pressure information; the pressure sensitive element and the probe plate output digital signals. Three laser welding connecting parts are arranged at the joint of the shell structure, between the upper cover structure and the shell structure and between the connector and the upper cover structure; and the interior of the shell structure is completely isolated from the external environment through a potting method.

The invention discloses a steel bar for an automobile compressor rotor and a production and preparation method of the steel bar. The steel bar is prepared from, by mass, 0.31%-0.36% of C, 0.20%-0.35% of Si, 0.42%-0.60% of Mn, smaller than or equal to 0.015% of P, smaller than or equal to 0.010% of S, 1.02%-1.20% of Cr, smaller than or equal to 0.25% of Ni, 0.21%-0.28% of Mo, 0.11%-0.18% of V, smaller than or equal to 0.15% of Cu and the balance iron and inevitable impurities. The process route comprises electric furnace smelting, LF furnace refining, VD refining, continuous casting, heating furnace heating, rolling and heat preservation. The steel bar for the automobile compressor rotor is produced through the electric furnace + LF + RH + continuous casting smelting process and the rolling process, the production specification is phi 120 mm, the mechanical property requirement is met, and the steel purity is guaranteed; the mechanical property and the impact property are ensured by reasonable component design and production process; the macrostructure, non-metallic inclusions and mechanical properties of the finished steel meet the requirements of high-end products.

The application discloses a 505 / 95R29 special high-load radial tire for nonferrous mine and a production process thereof, and relates to the technical field of tires. The application is characterized in that a concave V-shaped structure is arranged at the tire shoulder and the tire side, the transverse pattern groove of the tire tread extends to the tire side and is provided with a heat dissipation groove; the ring part is designed with full interference and is provided with anti-skid protrusions; a five-layer belt structure is adopted, the B1 belt layer is a two-piece small-angle split structure, and nylon reinforcing layers are arranged on both sides of the tire body. The application fills the design and development blank of the 505 / 95R29 special high-load radial tire for nonferrous mine by developing a new 505 / 95R29 special high-load radial tire for nonferrous mine and adopting a new production process, and solves the problems of insufficient load capacity of the current product of the large-tonnage wide-body vehicle and high failure.

The coal bed gas horizontal well yield increasing method based on the controllable shock waves comprises the steps that S1, a set of upward directional drilling construction sites are selected in a horizontal well service mine underground roadway, and the positions of directional drilling target spots are coal beds right opposite to the positions, away from a horizontal well, of horizontal well perforation points; s2, construction drilling is conducted on the position, with the target point being A m, of the target point, and whether the position enters the fracturing influence range or not and is the horizontal well drainage and mining influence range or not is judged; if the drilling target point is located in the fracturing influence range, controllable shock wave construction is conducted; if the drilling target spot is not in the fracturing influence range, construction is carried out on other target spot positions again until the target spot position in the fracturing influence range is found; and S3, for each horizontal well perforation, the step S2 is adopted for construction drilling, judgment is conducted till all the horizontal well perforations find the target spot positions of the fracturing influence range, and controllable shock wave construction is conducted. The method has the beneficial effects that the yield of the coal-bed gas well is increased, a seepage channel is further expanded, and the production life of the coal-bed gas well is prolonged.

The present invention discloses a method for producing steel for gear shafts in an ecological electric furnace process. The method adopts a 100t ECOARC ecological electric furnace + LF + RH + 210mm*210mm continuous casting smelting and frying process to produce a Φ60mm gear shaft steel bar, which not only ensures the mechanical properties, high hardness and high steel purity of the finished steel 40CrMnMoA for gear shafts, but also ensures the surface quality level of carburized gear shaft steel. The present invention ensures the surface quality and impact performance of the product through reasonable component design and production process. The low-multiple structure, non-metallic inclusions and hardness of the finished steel meet the requirements of high-end products. The gear shaft steel 40CrMnMoA with excellent mechanical properties, high hardness and high steel purity is developed to meet the new market demand; it achieves a technical breakthrough in the batch production of carburized gear shaft steel 40CrMnMoA bars in the converter continuous casting process.