[기계재료 4강] 열처리 (담금질,뜨임,풀림,불림) / 항온 열처리/ 표면경화 열처리 / 금속침투법

🎯 Special Lecture on the Engineer's Written Exam – Preparatory Course for Mechanical Engineering Majors! This efficient lecture focuses on key points and aims to help you pass the exam in a short period of time. 🔴 Simply check the playlist and study in order. 📚 Check out the short yet powerful strategy for passing the written exam in the video now! 📃 Timeline 00:00 Basic concepts of heat treatment and quenching 02:45 Purpose and process of tempering and annealing 05:43 Characteristics of annealing and isothermal heat treatment 07:28 Surface hardening heat treatment method 08:51 Purpose and method of heat treatment 10:48 Exam preparation and metal materials class conclusion 📘 Textbook information ✅ Mechanical Drafting Technician Written Exam Textbook: https://product.kyobobook.co.kr/detai... ✅ Lathe/Milling Technician Written Exam Textbook: https://product.kyobobook.co.kr/detai... Based on the above textbooks, we have thoroughly analyzed the exam trends and past exam questions. 📌 This course is recommended for: Students majoring in mechanical engineering preparing for the technician exam for the first time Those who are more concerned about the written exam than the practical exam Those who prefer organized, key points-based learning over repetitive learning