Wash. Admin. Code § 296-304-17021 - Heat treatment
(1) The
annealing of wrought iron gear required by this section must be accomplished at
a temperature between 1100° and 1200°F. and the exposure must be of
between thirty and sixty minutes duration. After being annealed, the gear must
be allowed to cool slowly and must then be carefully inspected. All annealing
must be carried out in a closed furnace.
(2) When heat treatment of loose gear made of
other than wrought iron or steel is recommended by the manufacturer, it must be
carried out in accordance with the specifications of the
manufacturer.
Notes
Order 74-25, § 296-304-17021, filed 5/7/74.
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