Method for keeping wall thickness of steel pipe bearing jack
A processing method and steel pipe technology, which is applied in the field of steel pipe receiving socket wall thickness maintenance processing, can solve the problems of not meeting the requirements of ship specifications and uneven wall thickness, etc.
Inactive Publication Date: 2019-02-12
JIANGSU HAITONG OFFSHORE ENG EQUIP
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a processing method for maintaining the wall thickness of steel pipe sockets, which can solve the problem that the wall thickness of steel pipe sockets used in general ships is not uniform and the physical and chemical properties cannot meet the requirements of ship specifications.
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[0015] The following examples can enable those skilled in the art to understand the present invention more comprehensively, but the present invention is not limited to the scope of the described examples.
[0016] Such as figure 1 figure 2 The specific method of the processing method for maintaining the wall thickness of a steel pipe socket is as follows:
[0017] S1: Clamping of the steel pipe: the steel pipe is clamped by the clamping chuck on the lathe-type pipe clamping frame, and the steel pipe is driven by power and rotates at a speed of 1rad / s;
[0018] S2: Heating of the high-frequency coil: the high-frequency coil at one end of the steel pipe is nested at the end of the steel pipe in a non-contact manner, and the nesting length of the high-frequency coil 9 at the end of the steel pipe is 100-160 mm; Heating up to 750~1020℃;
[0019] S3: Thick pier at the end of the steel pipe: Set a sliding table support on one side of the heated steel pipe end of the lathe-type c...
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Abstract
The invention relates to a method for keeping the wall thickness of a steel pipe bearing jack. The method is characterized by comprising the following specific steps of S1, clamping the steel pipe; S2, heating the high-frequency coil; S3, upsetting on the end part of the steel pipe; and S4, flaring. After the high-frequency heating coil is adopted for heating in the steel pipe carrying socket processing system, the pier rough cushion block is used for carrying out upsetting on the end part of the steel pipe, then the special expanding device in the steel pipe receiving socket processing systemis used for uniformly flaring the end part of the steel pipe pier, the wall thickness of the end part of the steel pipe after flaring is consistent with the rest position of the steel pipe, and the flow speed of the medium in the steel pipe is ensured.
Description
technical field [0001] The invention relates to the field of processing a steel pipe socket, in particular to a processing method for maintaining the wall thickness of a steel pipe socket. Background technique [0002] Marine seamless steel pipes are widely used, such as fire pipes and ballast water pipes in various cabins and deck surfaces. Due to construction and location constraints, the joints in the length direction of the pipeline are often connected by "sleeves". figure 1 As shown, it is a common steel pipe structure; the wall thickness of the three pipes should not be lower than the theoretical requirement, and the thickness should not be divided into thick and thin; there are three rings at each joint, but the welding seam is difficult to weld and the welding slag is difficult to clean. It is not convenient for welding seam grinding; and it is easy to adhere to residues, which affects the flow rate of the medium. Using socket type interface, such as figure 2 As ...
Claims
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IPC IPC(8): B21D41/02
Inventor 金勇飞王钰枢金炼
Owner JIANGSU HAITONG OFFSHORE ENG EQUIP