PRE-HEATING EQUIPMENT FOR CASTING WELD IN SHIP CONSTRUCTION

摘要

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding preheating apparatus for ship castings for shipbuilding, and aims at preheating or heating a welding portion before and after welding operations for cast steel products having a constant thick size or shape during ship manufacture.;The present invention for achieving the object, a plurality of combustion burners for injecting a flame to a predetermined length when preheating the cast steel, and a flexible hose connecting each of the combustion burners The pre-heating unit, a gas supply unit for mixing and supplying the fuel gas and air introduced into the pre-heating unit, and the fuel gas supplied to the gas supply unit by using a thermocouple according to a preset preheating temperature using the cast steel product. The control unit for blocking when the worker reaches the desired temperature, characterized in that it comprises a control unit, a preheating unit and a gas supply unit is mounted, the moving wheel is installed to move the movable wheel.;According to the present invention, since a woven mat is installed to preheat the cast steel using a combustion burner in which a flame is injected to a predetermined length, the heat efficiency is good, and thus the preheating time is shortened and fuel can be saved.;Cast steel, preheat