Heat treatment method of unleaded brass alloy
OwnerKwang Jin Park, Jae Kil Shim +3inventors
InventorsKwang Jin Park, Jae Kil Shim, Young Sy Han, Kyung Hwan Yoon, Sung Ki Ahn
Life of this patent
Estimating the term…
Abstract
A heat treatment method for unleaded brass alloy is provided to improve processability, cracking resistance, wear resistance and anti-corrosive property of unleaded brass alloy containing no lead or containing a very small amount of lead. The heat treatment method includes full annealing an unleaded brass alloy material, mechanical processing the material after full annealing and soft annealing the material after mechanical processing.
Claims12
A heat treatment method for unleaded brass alloy, comprising:
- full annealing an unleaded brass alloy material;
- mechanical processing the material after full annealing;
- and
- soft annealing the material after mechanical processing,
- wherein the full annealing is carried out at a temperature of 530±30° C. and the soft annealing is carried out at a temperature of 330±30° C.;
- and
- the unleaded brass alloy material contains lead in an amount of 0.2 wt % or less.
(canceled)
A heat treatment method for unleaded brass alloy, comprising:
- forging an unleaded brass alloy material;
- full annealing the material after forging;
- mechanical processing the material after full annealing;
- and
- soft annealing the material after mechanical processing;
- wherein the full annealing is carried out at a temperature of 530±30° C.;
- and the soft annealing is carried out at a temperature of 330±30° C., and
- the unleaded brass alloy material contains lead in an amount of 0.2 wt % or less.
(canceled)
Dependencies are inferred from the claim text.