Large-scale heat-resistant steel heating furnace door manual gas welding repair device and repair process

Abstract

The invention discloses a large-scale heat-resistant steel heating furnace door manual gas welding repair device. A furnace door is of a cuboid hollow structure and comprises a furnace door front panel and a furnace door rear panel. A plurality of fixed rods are uniformly arranged inside the furnace door front panel and the furnace door rear panel. The large-scale heat-resistant steel heating furnace door manual gas welding repair device further comprises a rectangular fixed bottom steel plate, a pressure test water inlet pipe and a pressure test water outlet pipe. A plurality of sets of vertical H-steel supporting frames are arranged on the fixed bottom steel plate in bilateral symmetry. A transverse H-steel supporting frame with the height less than the vertical H-steel supporting framesis arranged between each set of the vertical H-steel supporting frames. The pressure test water inlet pipe and the pressure test water outlet pipe are arranged on the two sides of the interior of thefurnace door correspondingly. The pipe heads of one ends of the pressure test water inlet pipe and the pressure test water outlet pipe face upwards. The large-scale heat-resistant steel heating furnace door manual gas welding repair device is safe and easy to operate, stable in welding quality, low in investment cost and high in working efficiency, meets the actual demands on site, greatly reduces the maintenance cost, reduces shutdown loss during the process of heating an annular furnace and provides a guarantee for reasonable assembly production of various specifications of wheels and ringparts and heating steel ingots.

Description

technical field [0001] The invention belongs to the technical field of repairing large-scale heat-resistant steel heating furnaces, and relates to a manual gas-welding repair device and a repair process for a furnace door of a large-scale heat-resistant steel heating furnace. Background technique [0002] The main working process of the heating ring furnace of Maanshan Iron and Steel Railroad Material Co., Ltd. is mainly to send each steel ingot that has been cut and formed into the furnace through the mobile charging machine from the feeding port of the heating furnace, and then the steel ingot is set according to the setting in the ring furnace. The time, temperature, and moving track are heated for one circle, and the heated steel ingot is then clamped by the fixed manipulator from the discharge port of the heating ring furnace, and placed under the rolling mill for various forming dies to pier and perforate, so as to accurately achieve production The first step in the cr...

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Problems solved by technology

[0004] For the large-scale heat-resistant steel heating furnace door in the above-mentioned background technology, water leakage and trachoma occur after long-term use. If the large-scale spare parts are used to replace it, it will not only take a long time to purchase the scheduled production, but also cause high investment costs, and also cause production stoppage and relatively large losses. Problem, the present invention uses existing resources to design and manufacture a large-scale heat-resistant steel heating furnace door manual gas welding repair device and implements it in conjunction with the design-related repair process. Not only is the investment cost low, the on-site operation and maintenance are convenient, and the repair time is short, the key It is the heat-resistant steel inlet and outlet furnace door after welding repair to meet the service life of the steel ingot heating ring furnace, and greatly reduce the maintenance cost of the steel ingot heating ring furnace heat-resistant steel inlet and outlet furnace door

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