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Humidity Range of Temperature and Humidity Test Chamber 1. Humidity range of constant temperature and humidity test chamber We know that the humidity of constant temperature and humidity test chamber is relative, such as 50%RH at 30℃; 85%RH at 85℃, and so on, rather than from the lower limit of high ... Read More
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Sample Preparation Before Micro Vickers Hardness Testing In most cases, samples are sectioned and mounted prior to micro Vickers hardness testing. The samples are then ground, sanded and polished to provide a test surface free of scratches and surface texture. Sometimes production demands do not ... Read More
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Does The Environment Affect Microhardness Testing Because of the light loads utilized in microhardness testing, vibration can contribute to loading accuracy. Even if the part is not impacted during loading, the oscillation of the indenter or the test specimen can cause the indenter to work its way ... Read More
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Common Problems in Microhardness Testing Microhardness testers are delicate instruments. Extremely light forces (typically from 10 to 1,000 g.) must be accurately applied, and the resultant impressions (some as small as 10 microns) must be precisely measured under high magnification. And so there ... Read More
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Advantages of Stereo Microscope It helps view opaque specimens; A stereo microscope allows for microphotography; It also helps in 3-D imaging; A dissecting microscope enables the view of larger samples as it has a huge working distance. Disadvantages of Stereo Microscope It is not applicable for ... Read More
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How Operator Influence Accuracy of Microhardness Tester No other discipline of hardness testing is influenced as much by the operator as microhardness. Although this is true for both Vickers and Knoop testing, Knoop testing with its fine, seemingly endless tips is the most susceptible. In general, ... Read More
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Accuracy and Operation of 2D Vision Measuring Instrument The 2D image measuring instrument is a common optical measuring device that can be used to measure the size, distance, angle and other parameters of a plane object. The following is a detailed description of the accuracy and usage of the 2D ... Read More
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How to Select Temperature and Humidity Climate Test Chamber The temperature and humidity environment test chamber also called high and low temperature humidity test chamber, temperature and humidity cycle test chamber, etc. It is an environmental simulation system and equipment commonly used in ... Read More
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Principle of the Rockwell Test The Rockwell principle is described as follows: An accurately shaped indenter is used to make an indent in the sample to be tested. This indenter is either a spheroconical diamond, a 120-degree cone with a 0.2 millimeter radius tip, or hard metal ball with a 1⁄16, 1⁄8, ... Read More
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Ultrasonic Method to Measure Thickness ultrasonic instruments with a graphical LCD illustrate substrate roughness by displaying wide "peaks" when the substrate is rough and narrow "peaks" when it is smooth. This type of display helps in measuring coating systems in which the number of layers is ... Read More
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