Slant-hole gas cutting method of large-scale thick-wall forgeable piece tube

Abstract

The invention discloses a slant-hole gas cutting method of a large-scale thick-wall forgeable piece tube. The method is characterized by comprising the following steps of: (1) lofting and marking: lofting by using a computer technology according to a drawing size, marking an opening position line on the tube according to the lofting size, marking a plurality of gas cutting lead hole position lines at the inner side of the opening position line and marking a mounting position line for cutting an explorator at the inner sides of the lead holes; (2) manufacturing the explorator through cutting; cutting one end of the explorator according to a correlation line between the mounting position of the explorator and the contact surface of the tube, wherein the explorator is a cylinder made by rolling a thin steel plate; (3) firstly, drilling a plurality of gas cutting lead holes on the tube; (4) mounting the explorator on the tube; (5) mounting a semi-automatic cutting machine on the explorator, selecting a cutting nozzle according to the cutting thickness and then trying a cutting trail; and (6) cutting in segments and adjusting an upper sliding rod of the semi-automatic cutting machine during cutting so as to adjust the distance between the cutting nozzle and the cutting surface in any time. The invention does not need any equipment and greatly improves the efficiency than manual cutting.

Description

technical field [0001] The invention relates to a gas cutting technology, in particular to a method for processing inclined holes in a cylinder of thick-walled forgings in the coal chemical industry. Background technique [0002] In coal chemical equipment, solid coal undergoes physical and chemical changes to generate a large amount of volatile substances (including dry distillation gas, tar and pyrolysis water, etc.), and coal is bonded into semi-coke. Then use oxygen (air, oxygen-enriched or industrial pure oxygen) and water vapor as the gasification agent to convert the combustible part of coal or coal char into combustible gas (also called synthesis gas) through chemical reaction under high temperature and pressure. Synthetic gas can be reacted to produce chemical raw materials such as synthetic ammonia and methanol, and can also be used for IGCC integrated combined cycle power generation to reduce CO 2 emission and improve the efficiency of coal power generation. Due...

AI Technical Summary

Problems solved by technology

[0005] The invention solves two key problems in gas cutting: one is to use a semi-automatic cutting machine to cut to ensure the quality of the cut surface; the other is to use a profiling form to cut to solve the problem of the cutting track so as to ensure the cutting size and the quality of the cutting surface

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