好仪器找 加拿大28交流群 6208889球压试验仪
好仪器找 加拿大28交流群 6208889球压试验仪
球压试验按标准规定的条件，加拿大28交流群***号1302380888 用一定质量的球压试验器在一定的温度(125&plu***n;2°c），一定的时间下压入非金属，非陶瓷材料的表面来检验电动工具结构材料耐热性的试验。
球压试验
ball-pressure test
试件放置于水平位置，以20N压力压5mm直径***作用于试件表面。此测试应在加热箱内进行，加热箱温度75°C &plu***n; 2°C。***作用1小时后测量压痕直径。压痕直径大于2mm则试验失败。
The surface of the part to be tested is placed in the horizontal position and a steel ball of 5 mm diameter is pressed against the surface with a force of 20 N. The test is performed in a heating cabinet at a temperature of 75°C &plu***n; 2°C
The ball is withdrawn after 1 h and the diameter of the impression made by the ball is measured. An impression greater than 2 mm in diameter c***titutes a failure.