Metal pipe flattening test device

Abstract

A metal pipe flattening test device comprises a rack, a driving device arranged on the rack, a first pressing plate connected with the driving device, and a second pressing plate. The driving device drives the first pressing plate to move to extrude a metal pipe together with the second pressing plate. The metal pipe flattening test device is high in automation degree, in the metal pipe flatteningtest device, the device is started after a sample is placed at the second pressing plate for automatic test so as to improve the test efficiency; pressing can be automatically completed at one time in the test, the stroke can be accurately controlled by the control device to improve the test precision; and moreover, the test does not need manual repeated operation to ensure the length of the contact surface, reduce personnel and improve the test safety. The pressure sensor is additionally arranged, so that the distance of the pressing stroke in the test process can be controlled, and the moving speed is more accurate; and moreover, flattening test operation is convenient and simple.

Description

technical field [0001] The invention belongs to the technical field of metal tube flattening test devices, in particular to a copper tube flattening test device for air conditioners. Background technique [0002] The flattening test is to test the ultimate plastic deformation capacity of metal pipes under given conditions without crack defects. The principle is to apply a force to a specified length of the sample or metal tube in a direction perpendicular to the longitudinal axis of the metal tube to flatten it until the distance between the two pressure plates reaches the value specified in the relevant product standard under the action of the force. [0003] In the field of air-conditioning metal pipes, for example, copper pipes are analogous to the blood vessels of the air-conditioning system. They are important parts that connect all parts such as evaporators, elbows on condensers, pipe assemblies, capillaries, and four-way valves to form a seal. The system consists of ...

AI Technical Summary

Problems solved by technology

[0006] However, the current copper tube flattening test method is relatively primitive. During the test, it is necessary to clamp the copper tube with a bench vise and manually rotate the compression test. However, there is no such automatic special tooling in the prior art.

Therefore, it is necessary to design and produce a special tooling with high degree of automation and more convenient operation for testing, so as to simplify the inconvenience and inaccuracy of manual operation.

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