5results about How to "No plastic deformation" patented technology

The invention relates to the technical field of batteries, in particular to a composite buffer structure for a battery and a preparation method and application thereof. A composite buffer structure for a battery comprises a polymer matrix layer and a reinforcement phase located in the polymer matrix layer, the reinforcement phase comprises a shape memory alloy fiber layer, and the shape memory alloy fiber layer is of a three-dimensional network structure; and the volume fraction of the shape memory alloy fiber layer in the composite buffer structure for the battery is 10%-60%. According to the composite buffer structure for the battery, the polymer matrix layer serves as a continuous phase, the shape memory alloy fiber layer serves as a reinforcing phase, and the polymer matrix layer and the shape memory alloy fiber layer are mutually staggered in the polymer matrix layer to form a three-dimensional network structure; the shape memory alloy fiber layer with a proper volume fraction is adopted, can actively adapt to the volume change of a battery cell, shows superelasticity at the working temperature of the battery, provides high and stable recovery stress, and is excellent in fatigue resistance, so that long-term stable contact of a battery interface is effectively maintained.

This invention discloses a laser coaxial wire feeding additive repair device and method for the inner wall of pipe fittings, belonging to the field of laser additive manufacturing. The laser coaxial wire feeding additive repair device for the inner wall of pipe fittings includes a light guide arm, a four-beam laser head, and a wire feeding mechanism. The light guide arm is mounted on a robotic arm; one side of the light guide arm is connected to an optical cable, and the other side is tightly connected to the laser head via a bayonet. A wire feeding mechanism is fixed above the light guide arm, and multiple functional pipes, including cooling water pipes, protective gas pipes, and signal lines, are fixed below it. The laser head divides the laser beam introduced by the light guide arm into four beams distributed in a square shape through a lens group, and the four beams converge below the wire feeding head through a focusing lens. The focusing lens is installed in an anti-roll cage inside the laser head, and its up-and-down movement is controlled by a servo motor to change the laser focus position. A high-curvature wire feeding tube is placed inside the laser head, without interfering with the laser beam. The laser coaxial wire feeding additive repair device for the inner wall of pipe fittings described in this invention can realize laser coaxial wire feeding additive repair manufacturing of the inner wall of pipe fittings, improving the quality and efficiency of inner wall repair.

This invention belongs to the field of friction welding technology, and specifically relates to a device and method for targeted control of the microstructure of an inertial friction welded joint using electrical pulses. The device includes a six-degree-of-freedom parallel mechanism, a support unit, electrodes, a toroidal water-cooling unit, a toroidal magnetic unit, a frustum-shaped water-cooling unit, a frustum-shaped wall magnetic unit, and a fixture. The workpiece is placed on the support unit, the six-degree-of-freedom parallel mechanism limits the top of the workpiece, and the fixture clamps the welding toroidal surface. The toroidal magnetic unit and the toroidal water-cooling unit are disposed on the welding toroidal surface, and the frustum-shaped wall magnetic unit and the frustum-shaped water-cooling unit are disposed on the frustum wall. The electrodes provide pulsed current to the weld area. The toroidal magnetic unit and the frustum-shaped wall magnetic unit cooperate to guide the pulsed current to flow concentratedly through the weld area. The toroidal water-cooling unit and the frustum-shaped water-cooling unit cooperate to cool the base material area. This invention employs localized electrical pulse heat treatment, achieving the precipitation of strengthening phases in the weld area through the synergistic effect of Joule heating and electroplasticity, thus shortening the heat treatment cycle.

The invention belongs to the technical field of LED packaging equipment, and particularly relates to an LED side light support discharging and stacking device with a self-adaptive buffering function, the LED side light support discharging and stacking device comprises a base, a supporting seat is arranged at the top of the base, and a sliding rail is arranged on one side of the supporting seat. Specifically, the linkage assembly converts reciprocating motion of the first suction cup machine into one-way intermittent rotation of an intermittent fluted disc, and a bearing plate and the material receiving box are driven to descend step by step through a lead screw, a sliding block and a slope transmission pair. The descending distance each time is accurately equal to the sum of the thickness of the side light support plate and the combined thickness of the buffer plate and the convex part, due to the incomplete gear design of the fluted disc and the one-way conversion characteristic of the reciprocating hole, it is guaranteed that idling is conducted only in the discharging stroke driving descending process and the return stroke process, invalid movement is effectively filtered, and therefore each support is released at the fixed height; therefore, zero-impact stacking is realized, and the material receiving surface is kept flush with the receiving surface in the material receiving box.

The invention belongs to the technical field of grinding of grinding tools, and discloses a brittle corrosion-resistant metallic bond, a metallic bond superhard grinding wheel and a preparation method of the metallic bond superhard grinding wheel. The brittle corrosion-resistant metal bonding agent prepared by the invention comprises the following raw materials in parts by weight: 50-70 parts of copper powder, 5-20 parts of tin powder, 5-15 parts of graphite powder and 15-20 parts of an improvement additive. Graphite powder and an improvement additive are added into a traditional bronze-based metal binding agent, secondary heat treatment is carried out, the plasticity of the binding agent is reduced, the brittleness and hardness of the binding agent are improved, brittle fracture can occur in time, and the workpiece quality cannot be affected; through secondary heat treatment, elements in the improvement additive form a uniform and compact protective film on the grinding wheel, internal metal can be continuously prevented from being corroded in the whole life cycle of the grinding wheel, and the thickness consistency problem caused by corrosion of the side face in the using process of the grinding wheel is solved. The brittleness and corrosion resistance of the bronze-based metal bonding agent are improved on the premise that the cost is not obviously increased.