The utility model provides a novel lifting appliance disc
welding part for heat treatment of a composite
drill rod. The novel lifting appliance disc
welding part comprises a large lifting disc and a fan-shaped disc, the mounting groove is formed in the surface of the large hanging
scaffold, and the fan-shaped disc is arranged in the mounting groove. According to the novel lifting appliance disc
welding piece for heat treatment of the composite
drill rod, the welding rod penetrates through the mounting hole in the surface of the fan-shaped disc, the external thread end is matched with the T38 clamping sleeve to limit the welding rod on the surface of a large lifting disc, and the composite
drill rod lifting appliance disc and the composite drill rod are connected and assembled; after the matched clamping sleeve between the threads and the external thread end are stabilized, the composite drill rod is hoisted, so that the problem that the composite drill rod cannot be subjected to heat treatment in a
carburizing furnace is solved, and while the problem is solved, the composite drill rod is convenient to use and good in hoisting stability, and the service life of the composite drill rod is prolonged. And the hoisting problem of the composite drill rod
carburizing furnace in production is well solved.