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3 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What factors are considered before type of solder job |
Maximum temperature of the fluid in the tube Pressure if the fluids to be conveyed Tube size (the larger the tube the greater the forces on the tube wall) |
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What is a soft solder |
Soft solder is an alloy of tin or one or more antimony, copper, lead, silver and may be used to join most metals. When specifying a soft solder, the tin content is always mentioned fist For example 30/70 solder Means 30 tin 70 lead |
Any lead bearing solder content in excess of 0.2% shall not be used in potable water lines |
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What is flux And what is it’s purpose |
The primary purpose of the flux is to keep the surface of the metal free if oxides during the hearing and filling process. If the oxide or scale is not removed it limits the wetting action/capillary attraction thus preventing actual penetration of the grain boundaries Prevent oxidation Promote wetting action Break up oxides and float them to the top of the joint |
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