| 摘要 |
1. A process for thermal treating drawn brass rods essentially containing in addition to copper, from 30 to 42 % of Zinc, from 1.5 to 4.5 % of lead and also being able to contain up to 2.5 % of aluminium, up to 1.3 % of tin, from 0.03 to 0.1 % of arsenic, up to 0.1 % of iron, up to 0.01 % of silicon, characterized in that said rods are brought to a temperature of between 425 % C and 10 degrees C below the solidus temperature of the brass and preferably between 550 degrees C and 800 degrees C for a period of between 1/100 of a second and 10 minutes.
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