THERMOELECTRIC JUNCTIONING PROJECT
Progress rept. no. 2, 1 July-30 Sep 1962
WHIRLPOOL CORP ST JOSEPH MI
Pagination or Media Count:
The effort expended in the second quarter was mainly concerned with evaluation of solder alloys and their characteristics. The best solder series discovered during this period was a combination of bismuth, tin and antimony. Workable solders of this series were developed with melting points ranging from 400 to 273 F. Because surface cleanliness and preparation technique are extremely important in producing a superior solder joint, studies involving surface examination through electron microscopy were initiated to determine the surface contaminants. The sensitivity of the joint resistance scanner was improved by one order of magnitude to accurately determine resistance to 1 x 10 to the -7th power ohms.
- Couplers, Fasteners and Joints