Method for numerical control forming of large quantity of holes in stainless steel cylinder

Abstract

The invention provides a method for numerical control forming of a large quantity of holes in a stainless steel cylinder and belongs to the technical field of stainless steel carbonizers and similar containers or towers. The method comprises the following steps: a cylinder hole forming three-dimensional diagram is drawn by use of three-dimensional graphics software, the three-dimensional diagram of each section of the cylinder is unfolded according to a layout and converted into a graphic format which can be recognized by a numerical control cutting machine, an addition amount, a striking arc length, a cutting direction and a cutting order are set in a numerical control system according to the material of the cylinder and a plasma cutting method, all holes are cut by use of intermittent plasmas, the sections of the cylinder are molded and the unfitness of butt joint of end faces are controlled, and after welding is finished, the connection parts of the holes are planed and polishing is carried out to obtain the desired hole orientation. The method has the advantages that the problem of difficult, unsafe and inaccurate forming of a large quantity of holes by use of riveting after the stainless steel cylinder is molded is solved, and horizontal welding of 198 cooling water pipes in a stainless steel carbonizer with the cylinder.

Description

technical field [0001] The invention belongs to the technical field of manufacturing stainless steel carbonization towers and similar containers or towers, and in particular provides a method for opening a large number of numerically controlled holes on a stainless steel cylinder. Background technique [0002] At the beginning of this year, our company undertook a batch of manufacturing tasks for stainless steel carbonization towers. The stainless steel carbonization towers have an inner diameter of DN2000mm and a height of 30 meters. The centerline of each row of tubes is horizontal. Using our company's conventional method of drilling holes on stainless steel cylinders, firstly drill a large number of holes, use machining to drill positioning holes and then mill out each hole on a boring machine, but the diameter of the cylinder is 2000mm, and the drilling machine's capacity cannot reach it The cylinder is first formed, welded, then scored, and carbon arc gouging out each ...

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Problems solved by technology

[0003] The object of the present invention is to provide a method for opening a large number of holes on the stainless steel cylinder; it solves the difficult, unsafe and inaccurate problem of riveting a large number of holes after the stainless steel cylinder is formed, and realizes 198 holes in the stainless steel carbonization tower. Horizontal welding of cooling water pipes and cylinder

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