Analytical expression of T-vc dependence in standard ISO 3685 for sintered carbide

The most important part of new discovery is successfully realized experiment. Every experiment has inputs and outputs. Inputs are defined before experiment and they are accurately determined and described. Outputs have to be measured and described after experiment. It is very difficult to describe and express parameters that are base of experiments. Tested parameters and theirs dependencies are very often described by means of graphs, tables or definitions. Analytical expression of dependence represents very important part of experiments, because all tested processes can be described and defined by formula. Lot of parameters and their dependencies in engineering practice aren´t described by means of formula. Very important and often used standard ISO in engineering practice is standard ISO 3685. This standard includes characteristics for various cutting materials. The main part of this standard is T-v_c dependence for cutting materials. One of the cutting materials contained in standard ISO 3685 is sintered carbide. There are instructions obtained in standard ISO 3685 for creation of T-v_c dependence. The article describes process how to define and analytically express T-v_c dependence for sintered carbide (P20+TiN).