Embed Size (px)
Citation preview
Matrix type Cold Work Die SteelFeatures
Heat treatment
同 ＤＡＩＤＯ ＳＴ
Daido’s Matrix type Tool Steels Series
DC-Matrix is a matrix type cold work tool steel: only fine carbides are distributed in matrix due to optimum alloy design and production process. DC-Matrix shows high performance in service and ease in mold making as well.
Forging Temp. (℃)
Treating temperature (℃ ssendraH )
Annealing Quenching Tempering Stabilizing treatment Annealed Quenched & tempered
900－1160 920－980 Slow cooling
1000-1050 Air cooling
Low : 150 - 200 High: 480 - 560
Air cooling More than twice
400℃ for longer than 1h
≦
235HB 56～62HRC
＜Die performance＞◆ High hardness such as 62HRC is available by high temperature tempering with good
Dimensional stability, resulting in high wear resistance.◆ High toughness contributes to prevent cracking and chipping.
＜Ease in die making> ◆ Isotropic dimensional change works easy geometry control in heat treating. ◆ Machinability is improved by free machining additives and finely dispersed carbides.
Main applications
◆ Punches, dies and working tools for cold pressing and cold forging, especially for Cold stamping dies for high strength steels
Where galling and peel off of coated layer, TD and CVD, are main failure modes Insert blocks for composite stamping dies Where good dimensional stability is required in dies alignment Blanking punches and trimming edges Where main failures are cracking and chipping.
Chemistry
Patent pending
Matrix type Cold Work Die SteelFeatures
Heat treatment
同 ＤＡＩＤＯ ＳＴ
Daido’s Matrix type Tool Steels Series
DC-Matrix is a matrix type cold work tool steel: only fine carbides are distributed in matrix due to optimum alloy design and production process. DC-Matrix shows high performance in service and ease in mold making as well.
Forging Temp. (℃)
Treating temperature (℃ ssendraH )
Annealing Quenching Tempering Stabilizing treatment Annealed Quenched & tempered
900－1160 920－980 Slow cooling
1000-1050 Air cooling
Low : 150 - 200 High: 480 - 560
Air cooling More than twice
400℃ for longer than 1h
≦
235HB 56～62HRC
＜Die performance＞◆ High hardness such as 62HRC is available by high temperature tempering with good
Dimensional stability, resulting in high wear resistance.◆ High toughness contributes to prevent cracking and chipping.
＜Ease in die making> ◆ Isotropic dimensional change works easy geometry control in heat treating. ◆ Machinability is improved by free machining additives and finely dispersed carbides.
Main applications
◆ Punches, dies and working tools for cold pressing and cold forging, especially for Cold stamping dies for high strength steels
Where galling and peel off of coated layer, TD and CVD, are main failure modes Insert blocks for composite stamping dies Where good dimensional stability is required in dies alignment Blanking punches and trimming edges Where main failures are cracking and chipping.
Chemistry
Patent pending
AN ISO 9001:2008 CERTIFIED COMPANY
www.lindquiststeels.com
STRATFORD, CT800-243-9637 • FAX 203-386-0132
NEW HAMPSHIRE603-905-9042 • FAX 603-905-9072
Optical micrographs（As annealed）
DC11 (Equivalent to D2) DC53DCMX
● DCMX shows fine microstructure almost free from coarse carbides
Properties
200μm
Tempering hardness
505254565860626466
0 100 200 300 400 500 600Tempering temperature (℃), x1h, Twice
Hard
ness
(HRC
)
DC53DC11
DCMX
505254565860626466
0 100 200 300 400 500 600Tempering temperature (℃), x1h, Twice
Hard
ness
(HRC
)
DC53DC11
DCMX
54
56
58
60
62
64
460 480 500 520 540 560Tempering temperature（℃) x1h, Twice
Hard
ness（
HRC）
DC53DC11
DCMX
54
56
58
60
62
64
460 480 500 520 540 560Tempering temperature（℃) x1h, Twice
Hard
ness（
HRC）
DC53DC11
DCMX
Specimen: 15mm Cubic, Quenching: 1030℃ , AC
Dimensional stability
-0.15
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0 100 200 300 400 500 600Tempering temperature（℃）x 1h, Twice
Dime
nsion
al ch
ange（
%）
-0.15
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0.25
Prior to HT 480 500 520
Dime
nsion
al ch
ange
(％）DC53 DC53
DC11 DC11
DCMX DCMXDiameter Length
Tempering temperature（℃）x 1h, Twice
ThickWidthLong
ThickWidthLong
ThickWidthLong
DCMX DC53 DC11
-0.15
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0 100 200 300 400 500 600Tempering temperature（℃）x 1h, Twice
Dime
nsion
al ch
ange（
%）
-0.15
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0.25
Prior to HT 480 500 520
Dime
nsion
al ch
ange
(％）DC53 DC53
DC11 DC11
DCMX DCMXDiameter Length
DC53 DC53DC11 DC11
DCMX DCMXDiameter Length
Tempering temperature（℃）x 1h, Twice
ThickWidthLong
ThickWidthLong
ThickWidthLong
DCMX DC53 DC11ThickWidthLong
ThickWidthLong
ThickWidthLong
ThickWidthLong
ThickWidthLong
ThickWidthLong
DCMX DC53 DC11
Specimen: 10mm dia. x 50mm Long Specimen: 50mm Thick x 100mm Width x150mm Long Quenching: 1030℃ , AC Quenching: Atmosphere furnace, 1030℃ , Fan AC
25μｍ25μｍ 25μｍ25μｍ 25μｍ25μｍ
Fatigue properties Toughness
Machinability（Annealed）
10
100
10 100 1000 10000Cut length（mm）
Cuttin
g spe
ed（
m/mi
n）
050
100
150
200
250300
350
400
450
500
1000 10000 100000
Cut length（mm）
Max.F
lank w
ear（
μm）
DC53DC11
DCMX
DC53DC11
DCMXEndmilling DrillingTool: VP15TF(Mitsubishi)
32dia. Single tooth, Down cut
Cut: 1mm width, 4mm heightSpeed: 150m/min.Feed: 0.15mm/rev.Coolant: Air blowing
Tool: SKH51(M2), No ｃｏａｔed （NACHI)
Depth of hole: 20mm (Not through)
Feed: 0.15mm/rev, Dry
10
100
10 100 1000 10000Cut length（mm）
Cuttin
g spe
ed（
m/mi
n）
050
100
150
200
250300
350
400
450
500
1000 10000 100000
Cut length（mm）
Max.F
lank w
ear（
μm）
DC53DC11
DCMXDC53DC11
DCMX
DC53DC11
DCMXDC53DC11
DCMXEndmilling DrillingTool: VP15TF(Mitsubishi)
32dia. Single tooth, Down cut
Cut: 1mm width, 4mm heightSpeed: 150m/min.Feed: 0.15mm/rev.Coolant: Air blowing
Tool: SKH51(M2), No ｃｏａｔed （NACHI)
Depth of hole: 20mm (Not through)
Feed: 0.15mm/rev, Dry
Wear resistance (Ohkoshi-test) TD coating
10-8
10-7
10-6
10-5
52 54 56 58 60 62 64Hardness（HRC）
Spec
ific w
ear r
atio（
mm^2
/ kg･
f )
DC53
DC11
DCMXLoad: 6.3kgｆRotation disk: SCM415 (150HV)
Sliding speed: 2.86m/sec.Distance: 200m
Sliding speed:0.76m/sec.Distance: 400m
10-8
10-7
10-6
10-5
52 54 56 58 60 62 64Hardness（HRC）
Spec
ific w
ear r
atio（
mm^2
/ kg･
f )
DC53
DC11
DCMX
DC53
DC11
DCMXLoad: 6.3kgｆRotation disk: SCM415 (150HV)
Sliding speed: 2.86m/sec.Distance: 200m
Sliding speed:0.76m/sec.Distance: 400m
DCMX DC11
TD coating: By courtesy of DOWA Thermo Engineering.
400
500
600
700
800
900
1000
1100
104 105 106 107 108
Number of cycles to fracture
Appli
ed st
ress
(N/m
m2 )
0
10
20
30
40
50
60
56 58 60 62 64Hardness（HRC）
Char
pyim
pact
value
s（J/c
m2 ）
DC53
DC11
DCMXSpecimen : 10R NotchDirection : LongitudinalQuenching : 1030℃, ACTempering : High temp.
DC53 ( 62HRC/ High )DC11 ( 62HRC/ Low )
DCMX ( 62HRC/ High )Tempering
Rotating bending fatigue test (Smooth, L direction)
Quenching:1030℃, AC
400
500
600
700
800
900
1000
1100
104 105 106 107 108
Number of cycles to fracture
Appli
ed st
ress
(N/m
m2 )
0
10
20
30
40
50
60
56 58 60 62 64Hardness（HRC）
Char
pyim
pact
value
s（J/c
m2 ）
DC53
DC11
DCMX
DC53
DC11
DCMXSpecimen : 10R NotchDirection : LongitudinalQuenching : 1030℃, ACTempering : High temp.
DC53 ( 62HRC/ High )DC11 ( 62HRC/ Low )
DCMX ( 62HRC/ High )Tempering
DC53 ( 62HRC/ High )DC11 ( 62HRC/ Low )
DCMX ( 62HRC/ High )Tempering
Rotating bending fatigue test (Smooth, L direction)
Quenching:1030℃, AC
Properties
CCT diagrams Physical properties ◆Thermal expansion rate（x10-6/K, Ave.value from 20℃）
100℃ 200℃ 300℃ 400℃ 500℃ 600℃ 700℃13.3 13.7 14.0 14.4 14.7 14.9 14.9
◆Young modulus＝202 GPa ◆Specific weight＝7.67 g/cm3
※ Heat treating of specimens Quenching: 1030℃ , AC, Tempering: 500℃ , Twice
◆Thermal cunductivity（W/m･K [cal/cm･sec･℃ ]） RT 100℃ 200℃ 300℃ 400℃ 500℃
17.1[0.0409]
18.8[0.0449]
20.9[0.0499]
22.6[0.0540]
24.0[0.0573]
25.7[0.0614]
◆Specific heat （J/kg･K）RT 100℃ 200℃ 300℃ 400℃ 500℃507 535 570 611 654 719
Comparison of properties among Daido cold work die steels
Properties DCMX DC53 DC11
Tempering hardness
Low temp.(200℃) 61 HRC 61 HRC 61 HRC High temp.(500℃) 62 HRC 60 HRC 58 HRC Hightemp.(520℃) 60 HRC 62 HRC 58 HRC
Isotropy ◎ ○ △
Dimensional change with time*1 ○(○) △(○) ○(○)Hardneability ○ ◎ ○
Toughness ◎ ○ △
Fatigue properties ◎ ○ △
Machinability ◎ ○ △
Wear resistance ◎ ◎ ○
Wear resistance to sand △ ○ ◎
Wire EDM *2 ○ ◎ ○
Low temp. coating *2 ○ ◎ ○
*1 Comparison by dimensional change when stabilizing treated △ : Average, ○ : Good ◎ : Excellent Highlighted are especially featured properties
*2 Comparison by the decrease in hardness when tempered at 520℃ for wire EDM and PVD coating
0
100
200
300
400
500
600
700
800
900
1000
1 10 100 1000冷却時間（min）
温度（
℃）
768 761 746 746 705 438 244
DCMXDC53DC11
Time (sec.)
Temp
eratu
re (℃
)
HV
Austenitizing temp.1030℃ x10min.
0
100
200
300
400
500
600
700
800
900
1000
1 10 100 1000冷却時間（min）
温度（
℃）
768 761 746 746 705 438 244
DCMXDC53DC11
DCMXDC53DC11
Time (sec.)
Temp
eratu
re (℃
)
HV
Austenitizing temp.1030℃ x10min.
Time (min.)
AN ISO 9001:2008 CERTIFIED COMPANY
www.lindquiststeels.com
CCT diagrams Physical properties ◆Thermal expansion rate（x10-6/K, Ave.value from 20℃）
100℃ 200℃ 300℃ 400℃ 500℃ 600℃ 700℃13.3 13.7 14.0 14.4 14.7 14.9 14.9
◆Young modulus＝202 GPa ◆Specific weight＝7.67 g/cm3
※ Heat treating of specimens Quenching: 1030℃ , AC, Tempering: 500℃ , Twice
◆Thermal cunductivity（W/m･K [cal/cm･sec･℃ ]） RT 100℃ 200℃ 300℃ 400℃ 500℃
17.1[0.0409]
18.8[0.0449]
20.9[0.0499]
22.6[0.0540]
24.0[0.0573]
25.7[0.0614]
◆Specific heat （J/kg･K）RT 100℃ 200℃ 300℃ 400℃ 500℃507 535 570 611 654 719
Comparison of properties among Daido cold work die steels
Properties DCMX DC53 DC11
Tempering hardness
Low temp.(200℃) 61 HRC 61 HRC 61 HRC High temp.(500℃) 62 HRC 60 HRC 58 HRC Hightemp.(520℃) 60 HRC 62 HRC 58 HRC
Isotropy ◎ ○ △
Dimensional change with time*1 ○(○) △(○) ○(○)Hardneability ○ ◎ ○
Toughness ◎ ○ △
Fatigue properties ◎ ○ △
Machinability ◎ ○ △
Wear resistance ◎ ◎ ○
Wear resistance to sand △ ○ ◎
Wire EDM *2 ○ ◎ ○
Low temp. coating *2 ○ ◎ ○
*1 Comparison by dimensional change when stabilizing treated △ : Average, ○ : Good ◎ : Excellent Highlighted are especially featured properties
*2 Comparison by the decrease in hardness when tempered at 520℃ for wire EDM and PVD coating
0
100
200
300
400
500
600
700
800
900
1000
1 10 100 1000冷却時間（min）
温度（
℃）
768 761 746 746 705 438 244
DCMXDC53DC11
Time (sec.)
Temp
eratu
re (℃
)
HV
Austenitizing temp.1030℃ x10min.
0
100
200
300
400
500
600
700
800
900
1000
1 10 100 1000冷却時間（min）
温度（
℃）
768 761 746 746 705 438 244
DCMXDC53DC11
DCMXDC53DC11
Time (sec.)
Temp
eratu
re (℃
)
HV
Austenitizing temp.1030℃ x10min.
Time (min.)
![The Matrix-Type Magnetic Separator - Metallurgist …...This publication has been cataloged as follows: Fraas, Foster The matrix-type magnetic separator. [Washington] U. S. Dept. of](https://img.dokumen.tips/doc/110x75/5e43e32f5f7bc86d030c38c9/the-matrix-type-magnetic-separator-metallurgist-this-publication-has-been.jpg)
