The book "Calculation of the main Martnov furnace" by Nikolai Alexandrovich Kostylev is a unique work that immerses the reader in the world of metallurgy, revealing the subtleties and secrets of the process that is behind the production of steel. In this edition, the author shares his many years of experience and knowledge, offering readers not only theoretical foundations, but also practical recommendations that can be useful for both students and professionals in the field of metallurgy. From the first pages of the book, the reader finds himself in the center of discussion of the key aspects of the operation of the marten furnaces - from the choice of the sheath to the optimization of the melting processes. Kostylev not only describes technological processes, but also analyzes their impact on the quality of the final product. It explains how to correctly calculate the composition of the charge in order to achieve maximum efficiency and minimize costs. This book will be a real guide for those who want to understand how different components interact during the melting process and how their proper combination can affect the characteristics of steel. The book will be of particular interest to students of technical universities studying metallurgy, as well as specialists working in this field. Engineers, technologists and researchers will find in it a lot of useful advice and recommendations that will help them in everyday practice. Even experienced professionals will be able to discover new approaches and methods that can improve their work. The topics raised in the book cover a wide range of issues, from the physico-chemical processes occurring in the furnace to the economic aspects associated with steel production. Kostylev emphasizes the importance of accurate calculation of the load, emphasizing that even small deviations can lead to significant losses in the quality and quantity of products. It also looks at the effect of various additives and impurities on the melting process, making the book relevant for anyone involved in metal production. Kostylev's style is distinguished by clarity and accessibility, which allows the reader to easily assimilate complex concepts. His approach to the presentation of the material is based on a combination of theory and practice, which makes the book not only informative, but also practically useful. Kostylev is the author of several other works in the field of metallurgy, and his deep knowledge and experience make him one of the leading specialists in this field. By reading "Calculation of the main marten furnace", you will be able to assess how important it is to take into account all the nuances of the process in order to achieve the desired result. This book may also be of interest to people working in related fields, such as mechanical engineering and construction, where knowledge of the properties of materials and their processing technologies plays a key role. It will be an excellent addition to the library of any engineer or technologist seeking to deepen their knowledge and improve their skills. In conclusion, the “Calculation of the main Martnov furnace” is not just a training manual, but a real find for everyone who wants to understand how the world of metallurgy works. Kostylev creates a fascinating and informative reading that inspires new discoveries and research in the field of steel production. This book must be in the arsenal of everyone who strives for excellence in their profession.