Heating device for determining non-metal material high temperature compressive strength

Abstract

The invention relates to a heating device for measuring high temperature pressure resisting strength of nonmetallic materials, whose scheme is that a supporting stick 21 is arranged on a metal water-cooling base 23 of bottom center of a water-cooling metal sealing box 3, a graphite annulus 19 and an induction coil 4 are arranged concentrically outside a testing sample 20 which is arranged on the upper portion of the supporting stick 21, the induction coil 4 is connected with an induction furnace 1 through an insulating washer 2, a water-cooling head 7 is arranged on the upper portion of an upper pressure rod 8 which is arranged on the testing sample 20. The water-cooling metal sealing box 3 is arranged on a base 22 of a presser, and an upper pressure head 9 of the presser is pressed on thewater-cooling head 7. A quartz observing window 13 is arranged on one side of the water-cooling metal sealing box 3, the receiving end of an infra-red thermometer 14 is aligned to the testing sample20, the outlet end of the infra-red thermometer 14 is connected with a computer 15, a temperature controlling program inside the computer 15 is connected with the controlling end of the induction furnace 1. The invention has small volume, simple structure, small maintenance quantity, high using temperature and wide range of testing materials.

Description

Technical field: [0001] The invention belongs to a heating device for measuring properties of non-metallic materials. Specifically relates to a heating device for measuring the high-temperature compressive strength of non-metallic materials. Background technique: [0002] The high temperature compressive strength of non-metallic materials is a mechanical index of materials. To measure the compressive strength value of non-metallic materials at high temperature, it is necessary to heat the material to the measurement temperature. Different heating devices use different heating bodies: one is the traditional heating body, that is, the heating material uses electric furnace wire as the heating body, and the other The heating rate is slow and the measurement temperature is low; the second is to use precious metals as heating elements, such as platinum wire and platinum-rhodium strips, although the test temperature can be increased, but the price is expensive and the heating rat...

AI Technical Summary

Problems solved by technology

To measure the compressive strength value of non-metallic materials at high temperature, it is necessary to heat the material to the measurement temperature. Different heating devices use different heating bodies: one is the traditional heating body, that is, the heating material uses electric furnace wire as the heating body, and the other The heating rate is slow and the measurement temperature is low; the second is to use precious metals as heating elements, such as platinum wire and platinum-rhodium strips, although the test temperature can be increased, but the price is expensive and the heating rate is still very slow, and the precious metal heating elements are easily damaged. Maintenance; the third is to use silicon carbide rods or silicon molybdenum rods as the heating element. Due to the structure and size of the heating element, the heating equipment needs to be very large. When used in conjunction with the press, the press must have a large space to Heating equipment for placing samples, thus placing higher demands on the press

[0003] In addition, in order to pressurize the sample, the pressure rods pressed at both ends of the sample must extend out of the heating equipment, and the pressure rods transmit the pressure of the press to the sample. To measure the compressive strength at high temperature, press the The temperature of the pressure rods at both ends of the sample is also very high, which makes it impossible to seal the pressure rod and the heating furnace. In addition, the heating element of the above equipment can only work in the air atmosphere, so that the equipment cannot be used in vacuum or protective gas. work under atmosphere

[0004] Therefore, the heating device for measuring the high-temperature compressive strength made of the above-mentioned heating element limits the scope of use, making it impossible to measure the high-temperature compressive strength of many materials that are easily oxidized at high temperatures and materials that need to work in a vacuum or protective gas atmosphere.

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