Auntie CeCe's Modern Workshop Technology Course: Heat Treatment and Powder Metallurgy | Lesson 8

Lesson 8 of 13 in Auntie CeCe's Modern Workshop Technology Course, Part 2 (trade-exam build-up). Why we heat treat, the high speed steel hardening cycle step by step, tempering colors and what they are used for, case hardening with a hard skin and tough core, carburizing with a case depth worked example, nitriding compared with carburizing, austempering and martempering, the powder metallurgy chain from powder to sintered part, a compacting force worked example, what only powder can make, metal 3D printing by laser powder bed fusion, modern methods and why cyanide salt baths are gone, and heat treatment safety. In this lesson: Why Heat Treat?; Hardening High Speed Steel; Tempering Colors; Case Hardening; Worked Example: Carburizing; Nitriding and Carburizing; Austempering and Martempering; Powder Metallurgy; Worked Example: Pressing Force; Things Only Powder Can Make; Metal 3D Printing; Modern Methods, Old Dangers; Auntie's Recap. Course path: Part 1, foundations: 1 What is modern workshop technology · 2 Shop safety, then and now · 3 Metals and how we change them · 4 Measuring: calipers to CMMs · 5 Speeds, feeds and CNC Part 2, trade-exam build-up: 6 Casting · 7 Furnaces and induction heating · 8 Heat treatment and powder metallurgy · 9 Screw threads and angles · 10 Inspection: Taylor's principle to SPC · 11 Surface finish and machine alignment · 12 Grinding · 13 EDM, ECM, lapping, honing and crack detection The course follows the syllabus of a classic 1970s workshop technology textbook for technicians, rewritten from scratch and brought up to date with CNC, 3D printing, digital measuring and modern safety rules. There's a 3-question quiz at the end (pause and work it out), then the answers and the course path. This course is general education. Follow your instructor, the machine manual, OSHA rules and your shop's safety procedures for any real work. #WorkshopTechnology #AuntieCeCe #Machining #CNC