Gas-state tester of porosity

Abstract

The invention discloses a gas-state tester of porosity. The gas-state tester comprises a cabinet body and a cabinet door. The cabinet door can close the cabinet body, at least one support plate used for placing a test plate is arranged in the cabinet body at intervals, a plurality of air vents are arranged on the support plate, a liquid storage container used for placing volatile acid liquid for tests is arranged in the cabinet body, a timer and an alarm are installed on the cabinet body, and the timer is electrically connected with the alarm. After a test finishes, the timer can control the alarm to send out alarming sound and red light to prompt testing staff that the test is finished. The tester avoids test result abnormality caused by the fact that the testing staff forgets to take the test plate.

Description

technical field [0001] The invention relates to a tester, in particular to a tester for detecting the porosity of coatings. Background technique [0002] The porosity test is used to detect the discontinuity of the plating surface such as porosity and cracks. This test is particularly important for gold fingers, because the corrosion of the base metal through the pores of the coating will adversely affect the surface electrical contact performance of the gold fingers. Therefore, porosity and cracks are the main test objects for precious metal coatings. Porosity in coatings can be detected by a variety of techniques, the most common being electrical recording tests and porosity tests with some gaseous reagents. In the prior art, the generally simpler and commonly used method is to place a beaker containing nitric acid and a test plate in a glass vessel, and use a cover plate to seal the glass vessel to test the porosity, and use an alarm clock for timing, because the test re...

AI Technical Summary

Problems solved by technology

In the prior art, the generally simpler and commonly used method is to place a beaker containing nitric acid and a test plate in a glass vessel, and use a cover plate to seal the glass vessel to test the porosity, and use an alarm clock for timing, because the test requires dozens of hours It takes a long time before the end of the test, so it is easy for testers to forget to take the test board after the end of the test time, resulting in abnormal test results, and the instruments used in the above tests are too scattered and have problems such as poor airtightness

Images