A kind of pipe sample preparation equipment and its sample preparation method

Abstract

The invention discloses pipe sample preparation equipment. The pipe sample preparation equipment comprises a casing, a fastener, a base, a cutting machine, a translation mechanism and a rotary mechanism, wherein the fastener, the base, the cutting machine, the translation mechanism and the rotary mechanism are arranged in the casing; the fastener is used for fixedly installing a to-be-prepared pipe sample, one end, which is far from the fastener, of the to-be-prepared pipe sample is a sample preparation end, and the fastener is arranged on the base; the cutting machine is arranged on one end near the sample preparation end; the translation mechanism is arranged below the base and is used for pushing the fastener to drive the to-be-prepared pipe sample to move, so that the sample preparation end approaches to the head of the cutting machine in a horizontal direction; the rotary mechanism is used for driving the fastener to drive the to-be-prepared pipe sample to rotate around the axis of the to-be-prepared pipe sample, so that the sample preparation end is cut by the cutting machine in all directions. According to the pipe sample preparation equipment, the cutting depth can be determined by the translation mechanism, and the cutting direction can be determined by the rotary mechanism, so that the to-be-prepared pipe sample with any wall thickness and inclined angle can be prepared, and the requirement of high precision can be satisfied.

Description

technical field [0001] The invention relates to the technical field of pipes, in particular to a pipe sample preparation device and a sample preparation method thereof. Background technique [0002] The methylene chloride immersion test of rigid polyvinyl chloride (PVC-U) pipes is an important item in the detection of PVC-U pipes, which is used to characterize the plasticization degree and uniformity of the pipes. The degree of plasticization of the pipe will directly affect the long-term hydrostatic performance of the pipe and the service life of the pipe. Different standards have different requirements for the detection conditions of the pipe. Its main standards are GB / T 13526: Dichloromethane impregnation test method for rigid polyvinyl chloride (PVC-U) pipes. [0003] In the dichloromethane immersion test of rigid polyvinyl chloride (PVC-U) pipes, the samples used are cut from the pipes at least 100mm long, and carefully cut with a right-angle turning tool while trying ...

AI Technical Summary

Problems solved by technology

[0004] At present, when making samples for the methylene chloride immersion test of PVC-U pipes, there are mainly the following defects: (1) The bevel cutting position of the cutting machine is limited, and it is impossible to realize 360° all-round bevel cutting of PVC-U pipes

(2) The cutting machine cannot cut PVC-U pipes with any wall thickness, and it is difficult to meet the high-precision requirements of the sample

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