Heterogeneous bimetal composite pipe bending forming method based on pipe bending robot

Abstract

The invention discloses a heterogeneous bimetal composite pipe bending forming method based on a pipe bending robot, which comprises the following steps of: controlling the pipe bending robot 1 to reach a first appointed bending position, clamping a bimetal composite pipe 3 by using a bending module 21 of an end effector 2, and controlling the heating temperature of the bimetal composite pipe 3 through a temperature control box 212; the temperature is close to the recrystallization temperature of the metal with the low recrystallization temperature in the bimetal composite pipe, and meanwhile, the high-temperature-resistant and high-pressure-resistant oil pressure control system 5 pressurizes the interior of the bimetal composite pipe 3 according to a pressure control formula; by controlling the heating temperature and the liquid filling pressure during forming and the heat preservation and pressure preservation time after forming of all the bent sections is finished, the defects of internal combination failure and lining collapse in the bending forming process of the bimetal composite pipe are effectively restrained. And the defects of section distortion, instability, fracture and the like of the pipe in the bending forming process of the bimetal composite pipe are effectively overcome.

Description

technical field [0001] The invention belongs to the technical field of forming a bending member of a bimetallic composite pipe, in particular to a bending and forming method for a heterogeneous bimetallic composite pipe based on a pipe bending robot. Background technique [0002] The bimetallic composite pipe is composed of two dissimilar metal pipes, and the inner and outer pipe layers are closely combined by various deformation and connection technologies such as mechanical rolling method, explosive composite method, drawing composite method and hydraulic composite method. At present, the bending and forming process of bimetal clad pipe is mainly based on cold bending at room temperature such as numerical control bending, tension bending, and compression bending. . These failure modes greatly reduce the service performance of the bimetallic composite bending member after bending, and the bending member cannot be used normally, resulting in a waste of cost, and the forming...

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Problems solved by technology

These failure modes greatly reduce the performance of the bimetallic composite bending member after bending, and the bending member cannot be used normally, resulting in waste of cost, and the forming process is cumbersome, time-consuming and laborious

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