Glass softening point testing device
A glass softening point and testing device technology, applied in the investigation phase/state change and other directions, can solve the problem of lack of optical fiber drawing process and the inability to obtain the sample length accurately, and achieve the effect of simple and cheap device operation and accurate data.
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[0018] The present invention will be further described below with reference to the drawings and embodiments.
[0019] The softening point test device described in the technical solution of the present invention is as follows Figure 4 As shown, it is mainly composed of heating furnace 6, upper protective cover 4, lower protective cover 5, sample holder 9, test pressure rod 11, and load 1. The sample holder 9 is located at the bottom of the lower protective cover 5, and the test sample 10 is placed On the sample holder 9. The sample 10 to be tested is located in the middle of the heating furnace 6, and the thermocouple 7 for temperature measurement is placed in the sample holder 9 at the lower part of the sample 10 to be tested. And the upper protective cover 4, the lower protective cover 5, the sample holder 9 and the test pressure rod 11 are made of quartz material or zero-expansion glass material, so that the lower thermal expansion coefficient of quartz material and zero-expan...
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