5results about How to "Fully deformed" patented technology

The application relates to a preparation method of a high-toughness and strong-wear-resistant WC-Co coating and belongs to the technical field of thermal spraying cermet coating. Firstly, slurry mixed with WC powder, Co powder and an organic binder solution is sprayed and granulated to prepare spherical powder, then low-temperature heat treatment is carried out to obtain spherical WC-Co powder with certain cohesive strength, the spherical WC-Co powder is mechanically mixed with fine-particle boron nitride powder, high-temperature heat treatment is carried out above the eutectic point of WC-Co, WC-Co powder is separated through airflow classification, the powder after high-temperature heat treatment is deposited on the surface of a metal base through supersonic flame spraying, and a strong-wear-resistant WC-Co coating with nanocrystalline Co can be obtained. The application technology converts amorphous Co in a traditional coating into nanocrystals, improves the toughness of the coating and does not reduce the hardness of the coating.

This invention provides a high-temperature, high-pressure packer for variable well applications, relating to the field of oil and gas extraction technology. The packer includes an upper connector, a lower connector, a central tube, and a rubber sleeve assembly, a slip assembly, and an outer sleeve assembly arranged sequentially from top to bottom and abutting each other around the central tube. The slip assembly has a radially protruding flange near its lower end. The top of the outer sleeve assembly abuts against the flange. A gap is defined between the outer sleeve assembly and the central tube. Within this gap, a rubber sleeve drive assembly and a slip drive assembly are sequentially arranged from top to bottom. The rubber sleeve drive assembly abuts against the lower end of the slip assembly. The slip drive assembly drives the outer sleeve assembly upwards, thereby moving the lower end of the slip assembly upwards. The central tube has a first water inlet at a position corresponding to the rubber sleeve drive assembly and a second water inlet at a position corresponding to the slip drive assembly. This high-temperature, high-pressure packer for variable well applications, through its multi-stage drive mechanism and other structural features, enables the rubber sleeve to deform sufficiently, resulting in a tight seal.

The application discloses a method for preventing shear cracking in the process of titanium alloy forging and drawing, which comprises the following steps: step one, heating titanium alloy ingot with a height-diameter ratio of not more than 2.5 to above the phase transition point, and performing first-time forging to obtain a forging blank with a size of a1*b1*l1; step two, heating the forging blank to 20-40 DEG C below the phase transition point, and performing final-time forging to obtain a forging piece with a size of a2*b2*l2, wherein the method for the final-time forging is as follows: adjusting the opening width k of the drawing die to the width a2 of the forging piece, loading the forging blank into the drawing die along the length direction, and performing slow pressing or impact deformation through the upper anvil. The method can effectively improve the uniformity of the material, avoid shear deformation cracking in the process of forging and drawing, and is suitable for the technical field of metal material processing.

The invention provides a magnesium alloy forge piece and a preparation method thereof, and belongs to the technical field of magnesium alloys. Electromagnetic semi-continuous casting is adopted, the temperature field gradient of the melt can be reduced, the purity and uniformity of the melt are improved, the solidification structure is refined, and the surface quality of the cast ingot is improved; in the first fire of multi-directional forging cogging, a high forging temperature is adopted to prevent plastic deformation and cracking of the cast ingot, the cast ingot is fully deformed through multi-directional forging, casting defects such as shrinkage cavities, air holes and looseness in the cast ingot are reduced, and the cast ingot with a uniform structure is obtained; in the second fire, the forging temperature is reduced, and a multi-directional forging process is adopted, so that the aims of fully refining magnesium alloy grains and obtaining a homogeneous fine-grain blank for die forging are fulfilled; the forging starting temperature of die forging is designed to be low 450-480 DEG C, water cooling is rapidly carried out after die forging is finished, recrystallized grains are effectively restrained from growing, and a fine-grain forged piece is obtained. And then aging treatment can improve the mechanical property and heat resistance of the magnesium alloy forge piece.

This invention relates to the field of linear guide slider technology, and more particularly to a high-sealing linear guide slider used in linear transmission modules. It includes a slider and a linear guide for adapting to the slider. The slider is mounted on the upper end of the linear guide, and slider mounting seats are mounted on both sides of the slider. A sealing component is mounted on the inner side of one end of each slider mounting seat, and a telescopic spring is mounted on one end of the sealing component. A sealing ring is installed between the slider and the slider mounting seat. The sealing ring includes a limiting ring for connecting with the slider. An annular gasket is fixedly connected to one end of the limiting ring, and an annular groove with a triangular cross-section on one side is formed at the end of the annular gasket away from the limiting ring. In this invention, the annular groove forms a double-sealed cavity after compression, preventing the height difference between the slider and the slider mounting seat from decreasing. When the rubber ring is compressed, the annular groove can deform sufficiently, avoiding deformation of the parts due to compression.