Heat Treatment CBR search

Case ID	Case date	Case time
	- -	:
Charge ID	Case creator
Case type	Case owner
Population (1.0 .. 30.0)	Contact
Article number	Part ID
Part producer	Producer's batch nr
Comment
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Material designation

Composition
Element	Content [wt-%]	variation [% units]
C	(0.13 .. 0.21)	( .. )
Si	(0.2 .. 0.32)	( .. )
P	(0.0080 .. 0.024)	( .. )
S	(0.026 .. 0.049)	( .. )
Mn	(0.61 .. 1.35)	( .. )
Cr	(0.13 .. 1.27)	( .. )
Ni	(0.07 .. 2.52)	( .. )
Mo	(0.0030 .. 0.21)	( .. )
V	( .. )	( .. )
Ti	(0.0 .. 0.037)	( .. )
Nb	( .. )	( .. )
Al	(0.021 .. 0.034)	( .. )
N	(0.0074 .. 0.011)	( .. )
Ratio Al/N (3.1 .. 4.6)
Cu	(0.05 .. 0.19)	( .. )
W	( .. )	( .. )
Critical diameter ( .. )

Phase Data	[°C]
A₃ temperature	(760.0 .. 855.0)
A₁ temperature	(720.0 .. 725.0)

Jominy

Source

hardness at

[HRC]

J_1,5

( .. )

J₅

( .. )

J₁₀

(35.0 .. 36.0)

J₁₅

( .. )

J₃₀

( .. )

Forging
Deformation ratio, mean	[%] ( .. )

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CCT-diagram
M_s temperature	[°C] (257.0 .. 419.0)
M_f temperature	[°C] (189.0 .. 219.0)
M_s "time"	[s] ( .. )
Time at 700 °C	[s] ( .. )

Grain size
ASTM number before hardening	(7.0 .. 7.0)

Macrostructure
Segregation

Decarburization
Total depth	[mm] ( .. )
Effective depth	[mm] ( .. )

Steel manufacture
Ingot casting
Continuous casting, format
Reduction in rolling	[%] (29.0 .. 44.0)
Steel works
Works charge designation

General Geometry

Shafts

Spur Gears

Bevel Gears

Pinions

Massiveness	Characteristic dimension [mm] (22.0 .. 75.0)
Weight [kg] (0.028 .. 20.9)	Smallest feature [mm] (2.4 .. 30.0)
Largest dimension [mm] (40.0 .. 200.0)	Aspect ratio :1 (2.7 .. 28.0)
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Cylindrical gears

Helical gears

Gear, main shape
Outer diameter [mm]		(40.0 .. 187.35)	Inner diameter [mm]		(20.0 .. 160.0)
Width [mm]		(10.0 .. 38.0)	Modulus [mm]		(5.0 .. 5.0)
Ø D	(105.0 .. 105.0)	Mball average	( .. )	Tiprelief, TR average right flank	( .. )
B	(38.0 .. 38.0)	Mball max-min	( .. )	fHß average left flank	(-25.0 .. 15.0)
H	(10.1 .. 10.1)	Rmd, Out of roundness average	(40.0 .. 700.0)	fHß average right flank	(-27.0 .. 15.0)
S1	( .. )	Rmd, Out of roundness spread	(20.0 .. 700.0)	ffß average left flank	(0.0 .. 5.0)
S2	( .. )	fHa average left flank	(-25.0 .. 15.0)	ffß average right flank	(-1.0 .. 5.0)
S3	( .. )	fHa spread left flank	(2.0 .. 13.0)	Cß average left flank	(-1.0 .. 7.0)
S4	( .. )	fHa average right flank	(-27.0 .. 15.0)	Cß spread left flank	(1.0 .. 3.0)
S5	( .. )	fHa spread right flank	(1.0 .. 10.0)	Cß average right flank	(0.0 .. 5.0)
S6	( .. )	ffa average left flank	( .. )	Cß spread right flank	(1.0 .. 3.0)
T1	( .. )	ffa average right flank	( .. )	Lead conicity	( .. )
T2	( .. )	Ca average left flank	(0.0 .. 3.0)	Lead conicity spread	( .. )
T3	( .. )	Ca average right flank	(0.0 .. 3.0)	Lead average left+right flank	( .. )
T4	( .. )	Tiprelief, TR average left flank	( .. )	Lead average left+right flank spread	( .. )
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Machining	Residual stresses
Machining list	Clamping arrangement	(0.0 .. 0.0)
Machining list	Sequence
Plastic forming	Residual stresses
Stress relief annealing	Temperature	(650.0 .. 650.0) [°C]
Stress relief annealing	Time	(120.0 .. 120.0) [min]
Isothermal annealing	Temperature	( .. ) [°C]
Isothermal annealing	Time	( .. ) [min]
Controlled cooling (after forging)	Temperature directly after forging	( .. ) [°C]
Controlled cooling (after forging)	Time to 400 °C	( .. ) [min]
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Furnace type
Furnace ID
Furnace track

Fans
Fan type
Number of fans	(1.0 .. 1.0)
Fan positions
Fan diameter	[mm] (400.0 .. 400.0)
Speed	[r/min] (1500.0 .. 1500.0)

Temperature control
Temperature uniformity	± [°C] (5.0 .. 5.0)
Time since last calibration of thermocouples	months ( .. )

Size of furnace (heated zone)
Volume	[m³] (0.324 .. 67.2)
Length	[m] (0.6 .. 4.2)
Width	[m] (0.6 .. 4.0)
Height	[m] (0.6 .. 4.0)
Power	[kW] ( .. )

Atmosphere control
Number of oxygen sensors (or other device for measuring carbon potential, e g CO₂)	(1.0 .. 1.0)
Position of oxygen sensor(s)
Time since last calibration of oxygen sensor	[months] ( .. )

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Heating, carburising

Atmosphere

Charge Structure

Quenching

Tempering

For detailed description of the nomenclature click on the picture or here.

Time	Furnace temperature
to preheat temperature, t₁ [min] (0.0 .. 0.0)
holding at preheat temperature, t₂ [min] (0.0 .. 0.0)	preheat T₁ [°C] (300.0 .. 800.0)
to carburising temp. t₃ [min] (60.0 .. 60.0)
holding at preheat temperature, t₂ [min] (0.0 .. 720.0)	carburising T₂ [°C] (920.0 .. 950.0)
diffusion t₅ [min] (0.0 .. 420.0)	diffusion T₃ [°C] (910.0 .. 950.0)
holding at hardening temp. t₆ [min] (30.0 .. 90.0)	hardening T₄ [°C] (most often = T₃) (830.0 .. 890.0)
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Medium

Miscellaneous

Oil tank

Gas tank

Name/Composition of medium

Flow rate [m/s] (0.0 .. 0.0)

Medium temperature, start [°C] (70.0 .. 855.0)

Medium temperature, finish [°C] (25.0 .. 120.0)

Heat transfer coefficient, mean [W/(m²·°C)] (2500.0 .. 6000.0) Detailed input

Hardening power HP (320.0 .. 320.0)

Oil
Age of bath	[months] ( .. )
Percent changed	( .. )
Acid-base value	[mg KOH/g] ( .. )
Max. cooling rate	[°C/s] (88.0 .. 88.0)
Temperature at max CR	[°C] (584.0 .. 584.0)
Transition temperature between vapour and boiling phase	[°C] (660.0 .. 660.0)
Cooling rate at 550 °C	[°C/s] (80.0 .. 80.0)
Transition temperature between boiling and convection phase	[°C] (300.0 .. 300.0)
Hardening power HP (oil)	(320.0 .. 320.0)

Polymer
Type of polymer
Refractory index value	[%] ( .. )
Viscosity at 30 °C	[mm²/s] ( .. )
Concentration	[%] ( .. )
Age of bath	[months] ( .. )
Max. cooling rate	[°C/s] ( .. )
Temperature at max CR	[°C] ( .. )
Transition temperature between vapour and boiling phase	[°C] ( .. )
Cooling rate at 550 °C	[°C/s] ( .. )
Transition temperature between boiling and convection phase	[°C] ( .. )
Time between 700 and 400 °C	[s] ( .. )

Gas
Pressure	[bar] (15.0 .. 20.0)
Fan speed	[r/min] ( .. )
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Hardness and characteristics

Distortions

Hardness

Surface hardness [HRC] (30.0 .. 63.0)

Variation in surface hardness ± [HRC] (1.0 .. 1.0)

Core hardness [HRC] (29.8 .. 58.0)

Variation in core hardness ± [HRC] (1.0 .. 1.0)

Hardness gradient root

Hardness gradient flank

Case depth [mm] (0.0 .. 1.5)

Variation in case depth ± [mm] (0.0 .. 0.1)

Microstructure, surface

Surface content of ferrite [%] (0.0 .. 7.5)

Surface content of pearlite [%] (0.0 .. 3.0)

Surface content of bainite [%] (0.0 .. 90.0)

Surface content of martensite [%] (0.0 .. 98.6)

Surface content of residual austenite [%] (0.0 .. 12.0)

Grain size

ASTM number after hardening [%] ( .. )

Residual stresses

Residual stress gradient

Tangential stress, surface [MPa] (-320.0 .. 250.0)

Axial stress, surface [MPa] (-300.0 .. 200.0)

Surface characteristics

Oxidized (0.0 .. 0.0)

Depth of internal oxidation [µm] (0.0 .. 0.0)

Total depth of carburization [mm] (0.0 .. 1.2)

Effective depth of carburization [mm] (0.0 .. 0.58)

Depth of decarburization [mm] [mm] (0.0 .. 1.0)

Surface carbon content [%] (0.0 .. 0.8)

Microstructure, core

Core content of ferrite [%] (0.0 .. 22.0)

Core content of pearlite [%] (0.0 .. 3.0)

Core content of bainite [%] (0.0 .. 92.0)

Core content of martensite [%] (0.0 .. 98.6)

Core content of residual austenite [%] (0.0 .. 9.8)

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Shot peening

Intensity

Machining

Operations

Removed depth (average) [µm] ( .. )

New measured distortion
	Value	Variation	Mode
Outer diameter	[µm] ( .. )	[%] ( .. )
Inner diameter	[µm] ( .. )	[%] ( .. )
Length	[µm] ( .. )	[%] ( .. )
Width	[µm] ( .. )	[%] ( .. )
Ovality	[µm] ( .. )	[%] ( .. )
Conicity	[µm] ( .. )	[%] ( .. )
Torsion	[deg] ( .. )	[%] ( .. )
Flatness	[µm] ( .. )	[%] ( .. )
Straightness	[mm] ( .. )	[%] ( .. )
Angle of inclination	[deg] ( .. )	[%] ( .. )
Deformation drawing

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Shaft, main shape	Length [mm] ( .. )
Diameter, min [mm] ( .. )	Diameter, max [mm] ( .. )
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Number of teeth, z	(19.0 .. 19.0)	Helix angle, β	( .. )
Normal module, m	(5.0 .. 5.0)	Base helix angle, β_C	( .. )
Transverse module, mc	( .. )	Hand of helix
Correction factor, k	( .. )	Circular thickness on PD, S	( .. )
Pitch diameter, Dp	( .. )	Chordal addendum, ac	( .. )
Outside diameter, De	( .. )	Normal chordal thickness on PD after shaving and heat treatment, Sc	( .. )
Root diameter, Di	( .. )	Base tangent measurement after shaving and heat treatment, W	( .. )
Base diameter, Db	( .. )	Backlash, M	( .. )
Prefinishing form diameter, Diepf	( .. )	Center distance, g	( .. )
Control form diameter, Da	( .. )	Crowing per side, l	( .. )
External outside diameter, Dfe	( .. )	Fillet or tip radius on the tool, b	( .. )
Lead, pa	( .. )	Tooth tip fillet angle referred to axis Sm, Rc	( .. )
Normal pressure angle, α	( .. )	No. of teeth of mating gear, Ω	( .. )
Transverse pressure angle, α_C	( .. )	File No. of mating gear	( .. )
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	Concave side	Convex side
Individual pitch deviation	fp [µm] ( .. )	fp [µm] ( .. )
Pitch error	fu [µm] ( .. )	fu [µm] ( .. )
Total pitch deviation	Fp [µm] ( .. )	Fp [µm] ( .. )
Flank concentricity deviation	Fr1 [µm] ( .. )	Fr1 [µm] ( .. )
Concentricity deviation	Fr [µm] (2.0 .. 40.0)
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Gear, main shape	Gear part, outer diameter [mm] ( .. )
Shaft part, diameter [mm] ( .. )	Shaft part, length [mm] ( .. )
Tip cone angle [deg] ( .. )	Flatness [µm] ( .. )
Runout shaft [µm] ( .. )	Roundness shaft [µm] ( .. )
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Carbon potential at boost [%] (0.2 .. 1.3)	Number of volume changes [times/h] (5.0 .. 5.0)
Carbon potential at diffusion [%] (0.2 .. 1.4)	Flow of nitrogen [m³/h] ( .. )
Carbon potential at holding [%] (0.2 .. 0.8)	Flow of methanol [l/h] ( .. )
Content of CO [%] (20.0 .. 20.0)	Flow of propane [l/h] ( .. )
Content of H₂ [%] (40.0 .. 40.0)	Flow of methane [l/h] ( .. )
Content of N₂ [%] (40.0 .. 40.0)	Flow of acetylene [l/h] ( .. )
Content of CH₄ [%] ( .. )	Flow of ammoniac [l/h] ( .. )
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Heat treatment selector

Comparison

Shot peening

Machining

Charge homogeneity [%] (100.0 .. 100.0)
Positioning of parts [deg] (0.0 .. 90.0)	Distance to nearest neighbour [mm] (50.0 .. 50.0)
Number of nearest neighbours (4.0 .. 4.0)	Number of neighbours below (0.0 .. 0.0)
Total number of layers (1.0 .. 8.0)	Number of parts per layer (5.0 .. 30.0)
Basket permeability [dimensionless] (0.8 .. 0.8)	Charge volume, envelope [m³] (0.03 .. 0.03)
Charge weight, goods + charging equipment [kg] (35.0 .. 350.0)	Parts friction (30.0 .. 30.0)
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Transfer between furnace and quench tank
Transfer time between furnace and quench tank	[s] (8.0 .. 8.0)
Atmosphere during transfer between furnace and quench tank
Holding time in quenching medium	[min] (6.0 .. 15.0)
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Time between hardening and tempering	[min] (5000.0 .. 5000.0)
Time to tempering temp.	[min] (60.0 .. 60.0)
Tempering temperature	[°C] (120.0 .. 180.0)
Tempering time	[min] (60.0 .. 180.0)
Cooling after tempering	[°C/min] ( .. )
Cooling medium
Sub zero treatment
Chilling temperature	[°C] ( .. )
Aftertempering temperature	[°C] ( .. )
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