JIS B7730-1997 Rockwell hardness test-Calibration of reference blocks,JIS,B7730,1997,Rockwell,hardness,test,Calibration,of,reference,blocks,人人文库,
洛氏硬度試驗 (RockwellHardnessTest) 一、目的: 巨觀硬度 二、設備: 洛氏硬度試驗機 圖1.標準型洛氏硬度試驗機及壓痕器 三.原理: 1. 2.最常用的二種尺度: 尺度 壓痕器 試驗荷重 適用狀況 B 直徑1.588mm鋼球 100kgf 退火鋼等軟質材料,HRB30~100 ...
1. Scope 1.1 These test methods cover the determination of the Rockwell hardness and the Rockwell super?cial hardness of metallic materials by the Rockwell indentation hardness principle. This standard provides the requirements for Rockwell hardness machines and the procedures for performing Rockwell ...
1.2 This test method includes requirements for the use of portable Rockwell hardness testing machines that measure Rockwell hardness by the Rockwell hardness test principle and can meet all the requirements of this test method, including the direct and indirect verifi cations of the testing machine. ...