Spray gun device used for hot abrasion test

Abstract

The invention relates to a spray gun device used for a hot abrasion test. A high-pressure chamber (12) of the spray gun device is communicated with an air inlet (3); the high-pressure chamber is formed in an upper spray gun body (2); the lower part of the high-pressure chamber is provided with a spray nozzle (4); the spray nozzle is corresponding to a sandblast pipe (19) and a certain clearance exists between the spray nozzle and the sandblast pipe; clearances formed among the spray nozzle, the sandblast pipe (19) and the inner wall of a lower spray gun body (5) are communicated with an abrasion media inlet (14); the spray gun device is provided with a transition mechanism (13) which is a box body; the transition mechanism is arranged in a low-pressure chamber (21) of a hot abrasion tester; the outlet end of the sandblast pipe is arranged in a cavity of the transition mechanism; an upper orifice of an abrasion media channel is arranged on the lower surface of the transition mechanism;and an axial line of the sandblast pipe and the upper orifice of the abrasion media channel are arranged on the same axial line.

Description

【Technical field】 [0001] The invention relates to a thermal wear test device, in particular to a spray gun device for the thermal wear test. 【Background technique】 [0002] The hot wear tester is a test instrument for testing the wear resistance of refractory materials in high temperature environments. The principle of the experiment is to use a high-speed flowing abrasive medium to erode the surface of a high-temperature sample, and measure the eroded volume of the sample to evaluate the wear resistance of the material. [0003] Taking the prior art CN101246103 as an example, in Figure 7 In this patent, in order to ensure that the test process is not restricted by the environment, the test is accurate and reliable, and the reproducibility of the test can be achieved; it is necessary to ensure that the temperature and pressure in the sample chamber "also called the furnace" are knowable and controllable, and that each time the sample is eroded The weight of the wear medium...

AI Technical Summary

Problems solved by technology

This makes the coaxiality and verticality of the blasting system very difficult to grasp, which directly affects the pressure and temperature stability of the furnace (24), and also changes the weight of the wear medium that erodes the surface of the sample, so it is obtained The corresponding accuracy of the data will be greatly reduced, and the data obtained only by the experience of the operator cannot meet the precise data requirements

Simultaneously, when the high-speed flow particle erodes the surface of the sample (23), it will be more destructive to the sandblasting pipe (19), the voltage stabilizing ring (20) and the protection pipe (18), so the sandblasting pipe (19) and Stabilizing ring (20) and protection pipe (18) must be replaced regularly, especially sandblasting pipe (19) must be replaced every time for new tests, so that the design of the spray gun device must be easy to disassemble and install

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