| 228 / | HD | METAL FUSION BONDING | 
| 101 | DF | PROCESS {38} | 
| 214 |  | .~ With protecting of work or filler or applying flux {5} | 
| 215 | DF | .~.~> By confining filler {1} | 
| 217 | DF | .~.~> Using getter | 
| 218 | DF | .~.~> Using gas, vapor, vacuum, or reactive flame {2} | 
| 222 | DF | .~.~> Using cooling means (e.g., heat sink or barrier) | 
| 223 | DF | .~.~> Applying flux {1} |