Multifunctonal low temp tester for rubber

Abstract

The test set consists of low temperature thermal container with desktop as well as devices and parts above desk and devices and parts below desk. Devices and parts above desk includes: device for measuring cold tolerant coefficient, device for measuring low temperature brittleness, feeding wells taking in samples for the said two devices, display screen with programmable controller. Devices and parts below desk include: cold chamber including minitype pump and connected radiator. Controlling and testing signals are displayed on screen. The test set provides multiple functions, improves working environment and condition, raises efficiency and precision, lightens labor intensity.

Description

technical field [0001] The invention relates to a rubber testing instrument, in particular to a multi-functional rubber low temperature testing instrument capable of testing the cold resistance coefficient, brittleness, hardness and other indicators of vulcanized rubber products at low temperature at the same time. Background technique [0002] The cold resistance coefficient, brittleness, and hardness of vulcanized rubber products at low temperatures are the main indicators for evaluating rubber products, and they are also key items affecting rubber products. The three standards of GB6035-82 "Determination of Tensile Cold Resistance Coefficient of Vulcanized Rubber" and GB / T531-1999 "Test Method for Indentation Hardness of Rubber Pocket Durometer" all stipulate detailed measurement methods and assessment indicators. [0003] According to the measurement method of GB6035-82 "Determination of Cold Resistance Coefficient of Tensile Rubber of Vulcanized Rubber", the existing co...

AI Technical Summary

Problems solved by technology

It also depends on the heat transfer medium industrial sprinkles and coolant dry ice to cool the test piece, which brings a lot of inconvenience in the measurement, and the procedure is quite complicated

In summary, there are many disadvantages as follows: 1. The heat conduction of the test piece is slow at room temperature due to the cooling of the test piece through the heat transfer medium and the coolant, which is not conducive to rapid cooling; 2. Since the test piece is soaked in alcohol for cooling, the heat conduction is random, With the external heat exchange, the low temperature is difficult to control; 3. The test piece is always immersed in the liquid, which is inconvenient to operate; 4. The measurement cost is high, the operation is difficult, and the operator requires high skills; 5. The test results are not accurate. Accurate, large test error; 6 low test efficiency

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