7results about How to "Improve rolling precision" patented technology

The invention provides a pre-stress rolling mill and relates to the technical field of metallurgical equipment, the pre-stress rolling mill comprises a rack, a roller system, a rack pre-tightening mechanism and a hydraulic control system, the roller system is rotatably mounted on a housing through a bearing seat, and the rack pre-tightening mechanism comprises a pre-tightening hydraulic cylinder matched with the bearing seat in an aligned manner; the output end of the pre-tightening hydraulic cylinder vertically penetrates through the memorial archway and is in threaded connection with the bearing seat, and the pre-tightening hydraulic cylinder applies pre-tightening force in the vertical direction to the roller system. The hydraulic control system is provided with a hydraulic pipeline and a pressure adjusting switching valve, the hydraulic pipeline is connected with the pre-tightening hydraulic cylinder, the pressure adjusting switching valve is arranged on the hydraulic pipeline, the pressure adjusting switching valve is provided with a first working position and a second working position, when the pressure adjusting switching valve is located at the first working position, first pressure is provided for the pre-tightening hydraulic cylinder, and when the pressure adjusting switching valve is located at the second working position, second pressure is provided for the pre-tightening hydraulic cylinder. And providing second pressure for the pre-tightening hydraulic cylinder, wherein the second pressure is higher than the first pressure. The pre-stress rolling mill can keep proper pre-tightening force in a roll gap adjusting stage and a rolling stage.

The utility model belongs to the field of rolling technology, specifically is a kind of export sliding guide adjustment structure, including guide box;The guide box top is rigidly connected with stepper motor;Stepper motor output end is rigidly connected with rotating rod;Rotating rod both ends are rotatably connected with connecting rod;Connecting rod end is rotatably connected with support;The support one side is rigidly connected with wheel carrier;Wheel carrier both ends are slidably connected with slide rail;Wheel carrier bottom is rotatably connected with a group of guide wheels;The guide wheel bottom is rotatably connected with sliding block;A group of sliding grooves are arranged in the guide box top;The spacing between multiple groups of guide wheels can be adjusted by the rotation of rotating rod and related components driven by stepper motor, to adapt to the rolling conveying needs of different diameters, and multiple groups of guide wheels form continuous guide channel, apply uniform constraint to rolling, reduce deviation or shaking of rolling in conveying process, and its along straight line enters next rolling process, improves rolling precision and product quality.

This invention discloses a rolling method for 0.1mm thick ultra-flat and ultra-hard precision stainless steel sheets, including: preset rolling parameters, production preparation, rolling, and post-rolling cooling. The preset rolling speeds are: 100-120 m / min for the first pass, 90-100 m / min for the final pass, and 110-120 m / min for intermediate passes; the preset rolling pressures are: 740-800 KN for the first pass, 950-1000 KN for the second pass, and [missing information - likely related to the final pass]. The rolling pressure is 700-760 kN, with intermediate passes at 700-800 kN; the rolling oil temperature throughout the rolling process is 35-40℃; the preset plate profile curve is set as follows: slope value -20-40, center waviness value 80, and edge waviness value 20; the rolls are M42 rolls with a diameter of 38-40 mm; the roughness of the rolls used in the finishing pass and the pass preceding the finishing pass is 0.4-0.5 μm, and the roughness of the rolls used in the first pass and the remaining intermediate passes is 0.5-0.6 μm. This invention can produce 0.1 mm ultra-flat and ultra-hard precision stainless steel sheets with qualified and uniform surface roughness and flatness, small thickness tolerance fluctuations, stable surface quality, and effectively improved rolling accuracy, product qualification rate, and production efficiency.

The utility model discloses a numerical control four-roller plate bending machine, which relates to the technical field of plate bending machines, and comprises a machine body, a four-roller rolling and pressing assembly is arranged on the machine body, the front side and the rear side of the four-roller rolling and pressing assembly are respectively provided with a group of auxiliary supporting mechanisms, and the auxiliary supporting mechanisms are arranged on the machine body; the auxiliary supporting mechanism comprises a conveying supporting piece installed on the machine body, a bracket supporting piece is installed on the conveying supporting piece, a first hydraulic cylinder is installed between the machine body and the conveying supporting piece, and an adjusting piece is installed between the conveying supporting piece and the bracket supporting piece. According to the numerical control four-roller plate rolling machine, the plate before rolling and pressing is conveyed through the conveying supporting piece and the bracket supporting piece, the side portion of the plate during rolling and pressing can be supported, the lateral force of the plate is borne, the problem that the plate is prone to deformation is solved, and the rolling precision is improved.

The utility model discloses a kind of anti-deviation steel strip rolling device, it is related to steel strip rolling technical field.The utility model includes bottom box, the bottom box top side is fixedly connected with rolling frame, the rolling frame inside is fixedly connected with bottom roll, the bottom roll rear side is fixedly connected with drive box, the rolling frame inside is threadedly connected with adjusting lever, the adjusting lever bottom is movably connected with top roll by bearing.The utility model is designed by anti-deviation roller of conical body shape, when steel strip deviates, its inclined plane is contacted with steel strip edge, because the linear velocity gradient of roll surface changes along axial direction and forms asymmetric lateral friction force, restoring force pointing to rolling center is generated, drive steel strip automatic return normality.Anti-deviation roller is driven by second driving motor, keeps same direction rotation, avoids shear stress caused by reverse rotation, reduces steel strip edge scratch, indentation and edge curl risk, significantly improves rolling precision and product quality.

This invention discloses a synchronous power unloading device and its working method for high-speed wire rod mills, belonging to the field of metallurgical rolling equipment. The device includes a frame housing, a main shaft, an unloading disc, a power drive mechanism, a damping braking mechanism, and a synchronous control system. The unloading disc is a conical tensioning detachable I-beam structure, suitable for rapid feeding of large-diameter, heavy wire rods. The power drive mechanism actively provides unloading power, reducing wire rod tension. The damping braking mechanism is a disc brake with energized release and de-energized braking, automatically providing emergency braking in case of sudden failure. The synchronous control system achieves dynamic synchronization between unloading and rolling speeds through a tension sensor and PLC closed-loop speed regulation. This invention completely solves the problems of looseness, tangling, and breakage in high-speed, large-diameter, and fine-gauge wire rod rolling. It offers safe braking, efficient feeding, and precise synchronization, and is suitable for high-speed continuous rolling production of fine-gauge wire rods of various materials, significantly improving production efficiency and product qualification rate.