Measuring the Vickers Hardness on the Shanks of Hardened Screws in Accordance with ISO 18203 (JIS G 0559)

User Benefits

- Depth of hardened layers can be measured in accordance with the industrial standards ISO 18203 (JIS G 0559 and JIS G 0557) and for nitride layers with JIS G 0562. - Setting the measurement position is easy using the Pattern Setting function, enabling efficient working. - Measurements can be performed at any position even on test specimens with complex shapes using the Edge Detection and Stage Viewer functions.

Introduction

The surfaces of steel materials are hardened in order to improve their hardness and toughness. Quenching is a heat treatment process in which steel is heated to its transformation temperature or higher and then cooled rapidly to change the internal crystalline structure. The depth of the layer that has been hardened by this process is referred to as the hardened layer. The Vickers hardness test and other similar tests are used to measure this. Screw shanks, which are required to be strong, are sometimes subjected to the quenching process, and it is necessary to confirm that the treatment has worked properly. In this article, are presented of efficiently confirming the depth of the harexamplesdened layer on a screw shank in accordance with the industrial standards ISO 18203 (JIS G 0559) using the HMV-G31-FA Micro Vickers Hardness Tester.

March 28, 2023 GMT