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Inner slope type forged hubbed flange

A forging method and flange technology, which is applied in the field of new node connection forms, can solve the problems of large deformation and low stiffness of non-stiffened flange connections, and achieve the effects of reasonable structure, improved production efficiency and mechanization efficiency, and force coordination

Inactive Publication Date: 2011-10-12
张大长
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Non-stiffened flanges are also widely used in practical engineering applications. However, due to the low connection stiffness of non-stiffened flanges, the deformation may be too large, and are generally used for components with less stress.

Method used

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  • Inner slope type forged hubbed flange
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  • Inner slope type forged hubbed flange

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Experimental program
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Embodiment Construction

[0016] The forged neck flange is directly forged from a steel billet into a rough sample of the flange, then machined, and heat-treated to eliminate residual stress. The steel can be Q235, Q345, Q390, Q420, Q460 and other existing steel types at home and abroad. ; It is connected with the steel pipe of equal diameter by butt weld. When the wall thickness of the steel pipe and the wall thickness of the flange welding part are relatively large, the bevel should be opened according to the requirements of the welding process; the flange of the steel pipe is connected by bolts, and the bolts can be 6.8, For grades 8.8 and 10.9, the high-strength bolts are tightened according to a certain pre-tightening force.

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Abstract

The invention discloses a forged hubbed (high neck) flange joint for a steel tube structure. The forged flange is connected with a steel tube through a circumferential weld; the forged hubbed (high neck) flange comprises a flange plate, a variable slope section, a straight neck section and a ring bolt hole, wherein the variable slope section of the flange has a main inner slope and a larger and even right-angled outer slope; and the straight neck section can be (not) arranged on the variable slope section and contributes to guaranteeing weld joint quality and weld joint quality detection. The length of the weld joint connecting the flange and the steel tube is 20 to 30 percent of that of a rigid flange, automatic welding is realized, and the flange is a connecting flange for lightening the labor intensity and improving the machining and manufacturing efficiency.

Description

technical field [0001] The invention provides a simple, fast and reliable new node connection form for the steel pipe structure, and is suitable for civil engineering structures, including construction engineering, bridge engineering, tower structures and other engineering structures. Background technique [0002] The joint form of steel pipe structure is the key to the design and construction of steel pipe structure. At present, the steel pipe structure mainly adopts two forms: stiffened flange and non-stiffened flange. [0003] Stiffened flanges have better rigidity, mechanical performance and integrity. Stiffened flanges have been widely used in practical engineering, and are more commonly used in the connection of important stressed components in important projects. However, the welding of stiffeners with stiffened flanges is cumbersome, and is usually done manually, and the work efficiency is relatively low, which cannot well meet the requirements of the project schedu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D1/033
Inventor 张大长
Owner 张大长
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