Method for forming longitudinal variable-thickness cold-bent section bars in continuous rolling manner and device thereof
A technology of longitudinal variable thickness and variable thickness rolling, which is applied in the field of profile processing, can solve the problems of high cost of use, poor flexibility of forming molds, and low efficiency, and achieve the effects of high production efficiency, high precision, and reduced production costs
Active Publication Date: 2014-01-01
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
In this method, the existing roll forming process principle is applied to the roll forming of U-shaped channel steel, which is advanced to a certain extent, but the forming mold of the production line of this method has poor flexibility and is only suitable for rolling of equal thickness plates , can not make full use of metal materials, and the mold used is a fixed mold. When different sizes need to be processed, different molds need to be replaced, and the axial adjustment mechanism of the roller shaft is mostly adjusted manually, which is very inefficient and expensive.
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[0026] A continuous rolling and rolling forming device for cold-formed profiles with longitudinally variable thickness is used, and U-shaped profiles are taken as an example. The forming section is as follows Figure 3B , 3C. The material is Q235 equal-thickness plate with a width of 140mm and a thickness of 2mm as the raw material, the forming speed is 20mm / s, the slitting width of the plate after flexible rolling is 120mm, and the tempering temperature is 500°C. get as Figure 3A U-profile shown.
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Abstract
The invention relates to a method for forming longitudinal variable-thickness cold-bent section materials in a continuous rolling manner and a device thereof, belongs to the field of section material processing technologies and equipment, and aims to solve the problems in the prior art that only constant-thickness cold-bent section steel can be produced, and materials cannot be fully utilized. The invention adopts the technical scheme that constant-thickness coiled materials are used as raw materials; after being uncoiled, the constant-thickness materials are flattened and pickled and then enter a variable-thickness rolling system to be rolled in a variable-thickness manner; afterwards, the constant-thickness materials are degreased and tempered in an on-line manner, and then longitudinal continuous variable-thickness plate materials are formed; the longitudinal continuous variable-thickness plate materials are smoothly rolled and longitudinally sheared and then enter a roller forming device, and the final section materials are formed; the final section materials enter a material discharging platform; and the following processes further comprise cutting-off, binding, packaging, and the like. The invention further provides the roller forming device for the cold-bent section materials according to the method. The roller forming device is provided with a computer system, a detecting device, the material discharging platform, a working table, and the like. Through adopting the method and the device, the aims of forming the variable-thickness cold-bent section materials, fully utilizing the materials, and the like are achieved.
Description
technical field [0001] The invention relates to a continuous rolling and rolling forming method and device for cold-bending profiles with longitudinal variable thickness, and belongs to the field of profile processing technology and equipment. Background technique [0002] In recent years, with the continuous development of human civilization and technology, the world's natural resources have been depleted and depleted, and cold-formed steel has been widely accepted as an environmentally friendly and energy-saving new building material. Compared with hot-rolled section steel, it has greater cross-sectional mechanical properties, moment of inertia, and torsional rigidity, and is easy to construct. The joint connection of cold-formed section steel is also very convenient. Nodes do require complex connections. In addition, the connection between the cold-formed purlin and the colored profiled plate is relatively simple, can be constructed on one side, and has good anti-corrosi...
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Patent Type & Authority Patents(China)
IPC IPC(8): B23P19/00B23P23/00B21B38/00
Inventor 韩飞邓颖哲
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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