Automatic finish machining method for cambered thick plate groove in suspended state

Abstract

The invention relates to a rapid maintenance method for extra-large type blast furnace equipment and provides an automatic finish machining method for a cambered thick plate groove in a suspended state. The method specifically comprises steps as follows: (1), a multifunctional operating platform is erected; (2), a travelling device is arranged; (3), the travelling device is adjusted and positioned; (4), a guide mechanism is arranged, angle adjustment and positioning are performed, and accordingly, a cutting nozzle is aligned to a cutting line; (5), trial cutting is performed, and the cutting nozzle is slightly adjusted; (6), formal cutting is performed, and the groove is formed. With the adoption of the automatic finish machining method, the aloft work risk of a worker is avoided; the problem that the cambered groove cannot be formed by conventional equipment in the suspended state is solved; the cutting efficiency, the levelness and the quality of a furnace shell weld groove are improved, the rapid overhaul time of a blast furnace is shortened, and the method has very high popularization and application value and can be popularized and applied to similar structures or equipment.

Description

technical field [0001] The invention relates to a rapid maintenance method for extra-large blast furnace equipment, in particular to an automatic finishing method for grooves of curved thick plates in a suspended state. Background technique [0002] After the blast furnace reaches its design age, the old furnace body needs to be dismantled and replaced. At present, for extra-large blast furnaces, the old furnace body is usually cut quickly or in large sections, dismantled step by step, and then reassembled in reverse order, and replaced by normal welding on site. If the furnace body of the blast furnace is completely renewed, the butt weld grooves at each section of the blast furnace can be pre-opened in the factory, and the quality and accuracy can be well controlled. Usually, the investment in the entire renewal project of the blast furnace body is huge, and sometimes only a certain part of the blast furnace body can be renewed according to the actual use situation. This...

AI Technical Summary

Problems solved by technology

The above method and equipment cannot be directly applied to the on-site cutting and precise machining of the butt weld groove of the blast furnace shell surface

[0005] If manual cutting is used, in order to ensure the cutting quality, the cutting surface needs to be repaired and polished. The efficiency is low, the high-altitude operation is very risky, and the quality is difficult to control

Conventional cutting methods have a greater risk to the main line construction period, and if some welds are not handled well, it will be difficult to control the pass rate of welding quality, which will have a significant impact on project quality and post-production safety

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