What do not speak CQI-9
CQI-9 provides tools for consistently improving quality in heat treatment operations. The document has an exceptionally processed part dealing with temperature measurement and elimination of measurement errors. It can be used as a guide how to achieve the desired heat treatment goals. However, Process Table A for carburizing only lists recommended methods and check intervals without any analysis of suitability and pitfalls for their use. The aim of the lecture is to supplement the practical information on the current possibilities, in which a system of control of the chemical part of the carburizing process can be built in the hardening plant