Handbook Heat Treating (1991) WW Part 10 ppsx

... Voltage, V °C °F kPa psi E Speed of rotation, rev/min 1 110 36 98 785 25 80 55 8 10 2 110 36 98 785 40 100 70 10 36 3 110 36 98 785 50 120 83 12 60 Fig. 5 Chart for plotting 8620 steel ... factors for three heats to induction harden a 34.11 mm (1.343 in.) yoke- spline 104 0 steel shaft per Table 3 specifications Process conditions Process factor Heat 1 Heat 2 Hea...

Ngày tải lên: 11/08/2014, 04:21

... of defects in heat- treated parts and the use of computer programs for designing heat- treat operations and predicting the properties of heat- treated steels. Because the heat- treating industry ... rather long times and is a concern for parts exposed to these temperatures while in service or when heat treating very massive parts which require long times to heat and cool. It...

Ngày tải lên: 11/08/2014, 04:21

... heat transfer coefficient is defined as: (Eq 1) where h is the interface heat transfer coefficient; q is the heat flow from the part to the quenchant; A is the part area; T 1 is the part ... Heat Transfer during Quenching. Heat removal from parts during quenching can be mathematically described in terms of the effective interface heat transfer coefficient. A quencha...

Ngày tải lên: 11/08/2014, 04:21

... AF 1 410 0.13-0.17 0 .10 max 0 .10 max 1.80-2.20 9.50 -10. 50 0.90-1 .10 . . . 13.50-14.50 HP 9-4-20 0.16-0.23 0.20-0.40 0.20 max 0.65-0.85 8.50-9.50 0.90-1 .10 0.06-0.12 ... other parts whose geometries were not so simple. Most recently, induction hardening and tempering techniques have been developed for purposes of heat treating to large case...

Ngày tải lên: 11/08/2014, 04:21

... . . . . 1.3 10 -4 10 -6 10 -6 10 -3 . . . . . . . . . . . . . . . 1.3 10 -5 10 -7 10 -7 10 -4 . . . . . . . . . . . . . . . Maximum Hard 1.3 10 -6 10 -8 10 -8 10 -5 . . . . ... 0.01 10 . . . . . . . . . . . . . . . Normal range Soft 0.13 10 -3 10 -3 1 . . . . . . . . . . . . . . . 0.013 10 -4 10 -4 0.1 . . . . . . . . . . . . . . ....

Ngày tải lên: 11/08/2014, 04:21

... (150) High -heat furnace Open chamber, electrically heated; front push, rear pull Size of hearth, mm (in.) 255 by 610 (10 by 24) (preheating) 255 by 915 mm (10 by 36 in.) (high heating) Length ... management attention and planning, particularly in heat- treating operations that have had their energy supplies curtailed. In the past, heat- treating operations required a supply...

Ngày tải lên: 11/08/2014, 04:21

... recommended. Simple shapes and fully pearlitic castings can be heated at faster rates. The heating rate can be accelerated above red heat. Fig. 14 Heat treatment schedule for hardening high-chromium ... Ni-Hard 4, was performed by supercritical heat treatment when as-cast hardness was insufficient. An austenitizing heat treatment usually comprised heating at temperatures between...

Ngày tải lên: 11/08/2014, 04:21

... 1560 100 0-1250 1830-2280 Ta None (a) 100 0 1830 1200-1350 2190-2460 10 1 010 1850 Incomplete . . . 20 101 0 1850 Incomplete . . . 30 101 0 1850 Partial . . . 40 101 0 ... 40 101 0 1850 Partial 7.5-9.5 50 101 0 1850 Full 9.0 -10. 0 10 1065 1950 Incomplete . . . 20 106 5 1950 Incomplete . . . 30 106 5 1950...

Ngày tải lên: 11/08/2014, 04:21