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发表于 2014-4-9 11:48:59
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本帖最后由 wasdlwasdl 于 2014-4-9 12:05 编辑
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Preheat: Heat to 1550-1600°F (845-870°C) Equalize.
Austenitize: 1900-2000°F (1035-1095°C), hold time at temperature 15-30 minutes.
Quench: Air or positive pressure quench (2 bar minimum) to
below 125°F (50°C), or salt or interrupted oil quench to about
1000°F (540°C), then air cool to below 125°F (50°C).
Temper: Double temper at 400-750°F (200-400°C). Hold for
2 hours minimum each time. (See Table) A freezing treatment
may be used between the first and second tempers. Freezing
treatments help to attain maximum hardenability and must
always be followed by at least one temper.
NOTE: For optimum stress relieving, CPM S35VN may be tempered
at 1000-1025°F (540-550°C). Tempering in this range may
result in a slight decrease in corrosion resistance.
Preheat: Heat to 1550-1600°F (845-870°C) Equalize.
Austenitize: 1900-2000°F (1035-1095°C), hold time at temperature 15-30 minutes.
Quench: Air or positive pressure quench (2 bar minimum) to
below 125°F (50°C), or salt or interrupted oil quench to about
1000°F (540°C), then air cool to below 125°F (50°C).
Temper: Double temper at 400-750°F (200-400°C). Hold for
2 hours minimum each time. (See Table) A freezing treatment
may be used between the first and second tempers. Freezing
treatments help to attain maximum hardenability and must
always be followed by at least one temper.
NOTE: For optimum stress relieving, CPM S35VN may be tempered
at 1000-1025°F (540-550°C). Tempering in this range may
result in a slight decrease in corrosion resistance.
Recommended Heat Treatment:
Austenitize 1950°F (1065°C). Quench to below 125°F (50°C).
Double temper at 600°F (315°C) 2 hrs. minimum each temper.
Cool to hand warm between tempers. A freezing treatment may
be added between tempers.
Aim hardness: 58-61 HRC.
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