Understanding the steel hardening process is extremely important for a mechanical design engineer. In this video, I explain everything about steel hardening, including what hardening is and how to measure hardness using various scales like Rockwell hardness (HRC, HRB), Vickers hardness, and Brinell hardness. I also cover different methods of hardening steel, such as water quenching and oil quenching, as well as case hardening techniques like flame hardening, induction hardening, carburizing, and nitriding.
Additionally, I discuss the phases of steel hardening, how to select the appropriate hardening process, and choosing the right steel grade for different applications like tooling and sliding components.
Chapters:
00:00 Importance of steel hardening
02:03 What we learn
03:52 What is hardness
05:43 Scratch hardness
07:49 Indentation hardness
09:29 Indentation hardness measurement
11:50 Vickers hardness scale
12:22 Rockwell hardness scale
12:46 HRB and HRC Hardness scale
13:52 HRC Hardness calculation
14:42 Brinell hardness scale
15:26 Rebound hardness
17:51 Hardness of steel raw material
23:08 Recommended hardness for tooling
24:25 Recommended hardness for sliding component
25:47 Recommendation before hardening process
26:26 Quenching heat treatment process
27:15 Tempering heat treatment process
28:03 Steel crystal structure
30:56 Steel Hardening process detail chemistry
35:55 Steel grade selection for hardening process
38:27 Full hardening process
39:59 Water hardening process
40:38 Oil hardening process
41:16 Air Hardening process
41:58 Salt bath hardening process
42:29 Selection of hardening process
43:18 Case Hardening process
44:38 Flame hardening process
45:14 Induction hardening process
45:35 Carburizing hardening process
46:15 Nitriding hardening process
46:45 Carbonitriding hardening process
47:17 Cryogenic hardening process
Hardness table Download link: [ Ссылка ]
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