Record Detail
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| ov00068 | |
| Soldering together of various parts, Walker and Hall Ltd., Electro Works, junction of Howard Street and Eyre Street | |
| Sheffield_City_Centre | |
| 1920-1939 | |
| Walker and Hall Ltd. | |
Hard Soldering The hard soldering together of the various parts has problems of its own. The solder used contains a percentage of silver and is known as 'silver solder'. As one part, already soldered, has to be added to another, a very gradual gradation of melting temperatures has to be worked out so that two parts, already soldered together, will not come apart by the heat of adding a third. Hard soldering requires the heat of a gas fed torch and high pressure air. Resting on a coke bed, the whole job becomes red hot before the solder runs. |
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