Thin walled pipe bending technology and device

Abstract

The invention discloses a thin walled pipe bending technology and device, and belongs to the field of pipeline manufacturing of ship industry thin walled pipeline systems. The head end, in a pipe fitting, of a central spindle is located at the pipe bending beginning position and clamps and fixes the other end, namely the rear end, of the pipe fitting. A mould disc and a mould block of a mould limit movement of the pipe fitting. The mould block moves to force the pipe fitting to be bent towards the circumference of the mould disc. The head end of the central spindle moves towards the front end along with bending of the pipe fitting. In the pipe fitting bending process, pipe bending acting force is applied at the front end of the pipe fitting, the pipe fitting is bent at any bent point, and the head end of the central spindle synchronously moves to the bend point to support pipe fitting bending. The thin walled pipe bending technology and device have the advantages that bends in various pipeline systems are replaced, the number of welding joints of the pipeline systems is greatly reduced, the pipeline bent quality is improved, and the thinning ratio is not larger than 10%.

Description

technical field [0001] The invention relates to a thin-wall pipe stewing process and device, which belongs to the field of pipeline production of thin-wall pipeline systems in the shipbuilding industry. Background technique [0002] The pipeline made by the pipe-simmering device is characterized by replacing the elbows in each pipeline system, greatly reducing the weld joints in the pipeline system, and improving the quality of each pipeline system. At present, the domestic and imported pipe simmering machines have problems such as discounts and bulges when bending thin-walled pipes, which cannot meet the technical production requirements. Especially in the manufacture of copper-nickel B10 thin-walled piping systems for military ships, the thinning rate is required to be no more than 10%, which cannot be achieved with existing equipment. The working principle of the existing equipment is that the mandrel in the tube does not move by clamping the front end of the tube, and t...

AI Technical Summary

Problems solved by technology

At present, the domestic and imported pipe simmering machines have problems such as discounts and bulges when bending thin-walled pipes, which cannot meet the technical production requirements.

Especially in the manufacture of copper-nickel B10 thin-walled piping systems for military ships, the thinning rate is required to be no more than 10%, which cannot be achieved with existing equipment

The working principle of the existing equipment is that the mandrel in the tube does not move by clamping the front end of the pipe, and the tube rotates with the placenta during operation. When the tube rotates to a certain angle with the placenta, the mandrel in the tube does not work, resulting in discounted tube bends

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