ASNT Level III- Visual & Optical Testing
My Level III Self Study Notes Reading 4 Section 4B
My Level III Self Study Notes Reading 4 Section 4B
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6.3.4 Process Control Applications<br />
A gas tight seal is needed to prevent leakage of combustion gases through<br />
the glass portion of a spark plug. To obtain optimum fusion properties, it is<br />
important to know and control the temperature inside the ceramic insulator<br />
and this can be done using a temperature indicating pellet. Sample insulators<br />
are loaded with pellets and processed with production parts. Information<br />
obtained from analyzing the samples is used to adjust furnace conveyor<br />
speed and temperature.<br />
Charlie Chong/ Fion Zhang