A preheating device and preheating method for TBM tool holder welding

Abstract

The invention provides a preheating device for TBM tool holder welding, which includes a working platform, a feeding assembly, a cantilever adjustment mechanism and a control cabinet, the feeding assembly is arranged on the working platform, and the workpiece is in the welding position through the feeding assembly and the preheating position; one end of the cantilever adjustment mechanism is movable and provided with an induction heating coil for preheating the workpiece, and the other end of the cantilever adjustment mechanism is movably arranged on the control cabinet; The components realize the mobile control cabinet. The preheating device of the present invention ensures the effective connection of preheating, welding and post-heating processes, saves the work of handling workpieces under high temperature, and improves the production efficiency and welding quality of the TBM tool holder. The present invention also provides a preheating method using the above preheating device, which can effectively reduce the labor intensity of personnel.

Description

technical field [0001] The invention relates to the technical field of welding technology, in particular to a preheating device and a preheating method for TBM tool holder welding. Background technique [0002] TBM tool holders are used in harsh working environments and require high welding quality. Its thickness and weight are high, the carbon equivalent of the base metal is high, and its weldability is poor. In order to ensure the welding quality, preheating before welding and slow cooling after welding are usually adopted. The heating methods currently used mainly include flame heating and heating in a heat treatment furnace. Although the investment of flame heating is small, there are problems such as low heating efficiency, high heat loss, noise and air pollution, surface decarburization, etc., and the temperature and heating uniformity are difficult to meet the process requirements. However, it is difficult to achieve the close connection of the three processes of pr...

AI Technical Summary

Problems solved by technology

Although the investment in flame heating is small, there are problems such as low heating efficiency, high heat loss, noise and air pollution, surface decarburization, etc., and the temperature and heating uniformity are difficult to meet the process requirements

However, it is difficult to achieve the close connection of the three processes of preheating, welding and post-heating during heating in the furnace. At the same time, there are safety hazards in the hoisting and transportation of workpieces at high temperatures.

Images