Kinds of Rockwell Hardness Scales Initially, 15 scales were created using a 10 kg preliminary force; 60, 100 or 150 kg total test forces combined with diamond; 1⁄16, 1⁄8, 1⁄4 and 1⁄2-inch diameter ball indenters; and 0.2 millimeter per Rockwell point. These forces are called the Regular Rockwell ... Read More

R, Saturation barrel, manually refill water: tap water or purified water, require clean. S, Machine cover supporting frames:：Support cover use. T, Water inlet: saturated barrels and test chamber heating water from this port automatically supply, require clean water free of impurities, the water ... Read More

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

Corrosion Fatigue Fracture A fracture of a metal component caused by the combined action of cyclic stress and a corrosive medium is called corrosion fatigue fracture. Compared with ordinary fatigue fracture (caused only by cyclic stress), a corrosive environment weakens the material through chemical ... Read More

Fast Evolution of Coating Thickness Gages Today's thickness gages also are more simplified, and are far more advanced and sensitive than in years past. Understanding what equipment is available and how to use it is critical to ensuring process control, product quality and cost control. Depending on ... Read More

Principle of Metallographic Electrolytic Corrosion Instrument The metallographic electrolytic corrosion instrument is an instrument used for surface treatment and observation of metal samples, and is widely used in materials science, metallurgy and metal processing. This article will introduce the ... Read More

What Is Centrifugation? Centrifugation is the process of concentrating the natural forces that act on all particles of different densities to accelerate the natural process of separation. It is what separates the particles by density in the test tube. Centrifugation can occur with either filtration ... Read More

What is Contact Fatigue of Materials? Under high cyclic contact stress, small areas on the surface of a material experience local metal spalling, forming pitting and indentations, which eventually leads to component failure. This is called contact fatigue failure. Contact fatigue mainly occurs in ... Read More

How to Place Samples When Using Temperature Test Chamber? How to place the test product when using a high and low temperature test chamber? It is well known that a high and low temperature test chamber with a large capacity can accommodate more test products, while a small capacity test chamber can ... Read More

Vibration Fatigue Fracture When a part is in operation, it often undergoes back-and-forth reciprocating motion around its equilibrium position, which is mechanical vibration. Mechanical vibration is often harmful, as it can significantly reduce the performance and service life of machine parts. ... Read More