The granularity control of the hard alloy production process is undoubtedly one of the key to the quality control of the hard alloy, but it is quite difficult for the average size and the quantitative determination and description of the grain distribution of the hard phase grain size in the hard alloy. The international standard (ISO4499-1978) only announced a few pictures of hard alloy tungsten carbide crystal granularity, and it is just a typical gold phase photo of crude crystals, medium and fine crystal alloys.
The national standard provides eight pictures with average particle size, but none of them can fundamentally solve the problem of granularity measurement and description. In recent decades, image and digital technology have developed rapidly.
Try to use digital image technology to solve its measurement problems. However, due to the bridge of carbides, especially ultra -fine alloy, the fine crystal skeleton cannot accurately determine the grain size of WC. The traditional grain size evaluation is a rough result with reference to the standard diagram.
Post time: Jan-14-2024
