Method for manufacturing large tonnage heavy solid-web crane beam pre-arch camber

Abstract

The invention relates to a method for manufacturing a large tonnage heavy solid-web crane beam pre-arch camber. The method comprises the steps that 1, check of drawings and sizing calculation are conducted; 2, steel plate snapline setting out is conducted; 3, numerical control cutting and discharging are conducted; 4, groove feculence cleaning and smooth grinding are conducted; 5, an H-shaped steel group is assembled; 6, welding resistance stiffening plate is conducted; and 7, anticorrosive coating is conducted. According to the method manufacturing the large tonnage heavy solid-web crane beampre-arch camber, a manufacturing method which combines the pre-arching camber, a special assembly platform, and welding tires with a reasonable welding sequence is adopted, at the same time, attention is paid to controlling welding deformation and welding quality, overall quality is ensured, the occurrence of the situation of down-wrapping is reduced, the construction period can be shortened, andmore working time is provided for subsequent works.

Description

technical field [0001] The invention relates to the technical field of crane girder production, in particular to a pre-arching manufacturing method for large-tonnage heavy-duty solid-web crane girders, which is suitable for welding heavy-duty and extra-heavy solid-web crane girders and solid-web roof girders in large-scale iron and steel enterprises and heavy industries Manufactured from H-shaped steel. Background technique [0002] With the development of the global economy, metallurgical industrial engineering has once again "come back". The metallurgical system is "famous" for its oversized and overweight equipment and components. In addition, the metallurgical industry operates day and night, and the frequency of use is high. Crane beams are not only To bear static load and also to bear dynamic load, the general crane girder is above heavy class. Therefore, a series of high difficulties such as oversized and overweight crane girder components, high manufacturing precisi...

AI Technical Summary

Problems solved by technology

Therefore, a series of high difficulties such as oversized and overweight crane girder components, high manufacturing precision requirements, and high welding quality will directly affect the normal production and operation in the future.

If there are many quality problems such as the deformation of the crane beam and the downward deflection, the production will be affected, resulting in unnecessary losses caused by the suspension of work and production.

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