4results about How to "Reduce high temperature oxidation" patented technology

The utility model relates to the technical field of high-temperature furnace cooling, in particular to a high-temperature furnace discharging cooling structure, and aims to solve the problems that in a high-temperature furnace discharging cooling mechanism, a liquid cooling structure is prone to causing weld joint cracking and liquid leakage due to alternating thermal stress generated by discharging, and the surface of a graphite boat is prone to oxidation due to high temperature during discharging. According to the technical scheme, a liquid cooling channel comprises a liquid cooling main channel and a liquid inlet and outlet channel which are communicated through a liquid cooling communication hole, the liquid inlet and outlet channel is formed in a liquid inlet piece, and the liquid cooling main channel is formed in a liquid cooling piece; the air cooling part is fixedly connected with the liquid cooling structure, the air cooling part and the liquid cooling structure form an air cooling channel, at least part of the air cooling channel and the liquid cooling channel share a wall surface, and the shared wall surface at least partially covers a welding seam area of the liquid cooling part and the liquid inlet part; gas is introduced into the air cooling channel, a protective air curtain is formed on the inner side, close to the discharging carrier, of the liquid cooling structure, the air cooling structure is additionally arranged on the basis of the liquid cooling structure, and meanwhile the service life and operation reliability of the liquid cooling structure and the discharging carrier are improved.

This invention proposes a long-life electric radiant tube heater, comprising an iron-chromium-nickel alloy heating wire, a ceramic body frame, a radiant tube sleeve, and heat dissipation fins. The iron-chromium-nickel alloy heating wire is threaded onto the ceramic body frame, and the iron-chromium-nickel alloy heating wire and the ceramic body form the electric heating core of the electric radiant tube. The radiant tube sleeve is fitted over the outside of the ceramic body frame, and the heat dissipation fins are fixed to the outer wall of the radiant tube sleeve to enhance heat dissipation. The long-life electric radiant tube heater proposed in this invention, by adding heat dissipation fins to the outside of the radiant tube sleeve, can improve heat dissipation efficiency, reduce the heat load on the material, and thus extend its service life.

The utility model relates to the technical field of crane lifting, and discloses an electrode bar lifting appliance for a crane, which comprises a lifting ring, a screw rod arranged at the bottom, a shackle arranged at the bottom of the screw rod, and a lifting hook arranged at the bottom of the shackle, the connecting assembly is arranged at the bottom of the screw rod and comprises a first connecting seat in threaded connection with the outer side of the screw rod, a rotating ball is rotationally connected into the first connecting seat, a second connecting seat is fixedly connected with the outer side of the rotating ball, and a transverse pin is in threaded connection with the bottom of the second connecting seat; through the arrangement of the connecting assembly, the lifting ring, the shackle and the lifting hook, the high-frequency and high-precision electrode bar lifting requirement of the electroslag furnace can be met, and production safety and process continuity are guaranteed.

This invention discloses an automated welding equipment for wheelchair manufacturing and forming, belonging to the field of wheelchair welding technology. It includes a mounting frame with a welding mechanism at its top. The welding mechanism includes a welding equipment body rotatably mounted in the middle of the mounting frame. A rotating wheel is fixedly mounted on the outer surface of the welding equipment body, and multiple telescopic welding pipes are arranged on the outer surface of the rotating wheel. A contact sensor is installed on the surface of the welding equipment body near the telescopic welding pipes. A limit mechanism is provided at the top of the mounting frame. This invention, by setting a rotatable rotating wheel and a circumferentially distributed array of telescopic welding pipes, combined with a gear meshing drive structure, can complete multi-point synchronous spot welding around the circumference of the wheelchair components. Simultaneously, a hydraulically driven moving plate enables automatic workpiece alignment. Combined with the sensing linkage between the contact sensor and the electrical connection point, the welding process is automated and coordinated, significantly shortening the wheelchair frame welding cycle and improving processing accuracy.