The easiest way is to use an electric grinding wheel to rub the hammer. The more sparks, the brighter the wear, the worse the wear resistance. The hammer with good wear resistance has fewer sparks and the color is dark red. When the strong wear-resistant hammer made by the "thermoset layer" double alloy coating technology is polished by the electric grinding wheel, since the hardness is high and the wear resistance is good, no spark can be seen.
Four Ball Friction And Wear Testing Machine
Friction Tester,Oil Testing Machine,Four Ball Friction Tester,Four Ball Wear Testing Machine
Jinan Chenda Testing Machine Manufacturing Co., Ltd. , https://www.jncdtester.com