Testing machine and testing method for low temperature brittleness of PP-R tube
The invention discloses a testing machine and a testing method for low temperature brittleness of a PP-R tube. The testing machine comprises a machine body, a hollow upright post, a control panel andlifting equipment which are mutually matched, wherein a base is arranged inside the machine body; a s...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a testing machine and a testing method for low temperature brittleness of a PP-R tube. The testing machine comprises a machine body, a hollow upright post, a control panel andlifting equipment which are mutually matched, wherein a base is arranged inside the machine body; a sample clamp is arranged on the upper surface of the base; a to-be-tested tube sample is putted on the sample clamp; a hammer falling through hole is formed in the upper part of the machine body; a sling chain, a clamper and an impact hammer which are mutually matched are sequentially arranged in the hollow upright post from top to bottom; a lower end opening of the hollow upright post is communicated with the hammer falling through hole; an openable observation window is formed in the lower part of the hollow upright post; an inclined baffle is arranged between the hollow upright post and the machine body and is matched with the impact hammer. The testing method comprises the following steps: preparing the to-be-te |
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