CALIBRATION OF PORTABLE BRINELL HARDNESS TESTERS
Abstract
The paper describes calibration method of portable Brinell hardness testers, which have been manufactured for many years and used popularly in China, especially used in testing hardness of ferrous metals. A series of experiment have been done concerning hardness levels for calibration, thickness of hardness blocks, supports of the blocks, diameters of ball indenters and touch-method between the block and the support. Based on result obtained from tests mentioned above, it is given that specifications of portable Brinell hardness testers including indication error of 7%, repeatability of 4%, etc. Besides that, this paper, also, provide an equation of Brinell values vs indentation diameters based on a table, which could be useful for application of the testers.
Event details
- Event
- Hardness Measurements Theory and Application in Laboratories and Industries
- Technical Committee
- TC5
- Place
- Washington, DC, USA
- Download
- hardmeko_2004-reg_form.pdf
- Time
- 11 November 2004 - 12 November 2004