Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 1 of 17
Object of testing:
1. Measuring of chain(all relevant DIN measures
2. Evaluation of microstructure of all chain parts
3. Hardness of all chain parts
4. Determination of breaking load
5. Evaluation of riveting
6. Bushing-split or solid
7. Optical comparison with WITRA chain,color of plates
Subjects of investigation:
TV chain:
h.8B-1 (462)
i.10B-1 (501)
j.12B-1 (513)
k.16B-1 (548)
Witra 2.Bemusterung TV chain eng Dr.T.Wolf
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 2 of 17
Measuring of the chain
h.08B-1 TV Chain
|
All values in mm
|
|
b1
|
b2
|
b3
|
d1
|
l2
|
g
|
|
min.7,75
|
max.11,30
|
min.11,43
|
max8,51
|
max.17,0
|
max.11,8
|
|
7.96
|
11.02
|
11.59
|
8.46
|
16.69
|
11.70
|
|
7.97
|
11.02
|
11.33
|
8.49
|
16.74
|
11.69
|
|
7.88
|
11.03
|
11.50
|
8.44
|
16.76
|
11.67
|
|
7.87
|
11.08
|
11.49
|
8.45
|
16.69
|
11.68
|
|
7.90
|
11.08
|
11.36
|
8.45
|
16.72
|
11.65
|
i.10B-1 TV Chain
|
All values in mm
|
|
b1
|
b2
|
b3
|
d1
|
l2
|
g
|
|
min.9,65
|
max.13,28
|
min.13,41
|
max10,16
|
max.19,6
|
max.14,7
|
|
9.78
|
13.14
|
13.58
|
10.14
|
19.58
|
14.66
|
|
9.76
|
13.20
|
13.51
|
10.12
|
19.43
|
14.66
|
|
9.71
|
13.08
|
13.74
|
10.16
|
19.39
|
14.57
|
|
9.80
|
13.07
|
13.67
|
10.16
|
19.40
|
14.54
|
|
9.89
|
13.20
|
13.62
|
10.11
|
19.36
|
14.57
|
j.12B-1 TV Chain
|
All values in mm
|
|
b1
|
b2
|
b3
|
d1
|
l2
|
g
|
|
min.11,68
|
max.15,62
|
min.15,75
|
max12,07
|
max.22,7
|
max.16,1
|
|
11.81
|
15.51
|
16.10
|
11.97
|
22.62
|
15.77
|
|
11.93
|
15.51
|
16.23
|
12.00
|
22.70
|
15.81
|
|
11.77
|
15.54
|
16.27
|
11.99
|
22.63
|
15.78
|
|
11.77
|
15.57
|
16.26
|
11.95
|
22.62
|
15.80
|
|
11.80
|
15.60
|
16.22
|
12.01
|
22.52
|
15.81
|
Witra 2.Bemusterung TV chain eng Dr.T.Wolf
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 3 of 17
k.16B-1 TV Chain
|
All values in mm
|
|
b1
|
b2
|
b3
|
d1
|
l2
|
g
|
|
min.77,02
|
max.25,40
|
min.25,60
|
max15,88
|
max.36,1
|
max.21,0
|
|
17.18
|
25.39
|
25.84
|
15.88
|
35.87
|
20.60
|
|
17.08
|
25.34
|
25.91
|
15.82
|
35.73
|
20.78
|
|
17.14
|
25.38
|
25.76
|
15.84
|
35.95
|
20.75
|
|
17.21
|
25.44
|
25.74
|
15.83
|
35.71
|
20.73
|
|
17.28
|
25.20
|
25.76
|
15.93
|
35.76
|
20.61
|
Witra 2.Bemusterung TV chain eng Dr.T.Wolf
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 4 of 17
Measuring of hardness
|
Chain part
|
Measuring of harding 08B-1 TV Chain
|
|
HRC HV10 HV30
|
CHD
|
|
pin
|
|
692
|
|
0.42-0.46mm
|
|
|
673
|
|
|
|
684
|
|
|
bushing
|
|
719
|
|
0.15-0.20mm
|
|
|
612
|
|
|
|
653
|
|
|
Outer plate
|
47
|
|
|
|
|
31
|
|
|
|
43
|
|
|
|
Inner plate
|
47
|
|
|
|
|
48
|
|
|
|
48
|
|
|
Evaluation of microstructure:
|
Chain part
|
Structural analysis 08B-1 TV-Chain
|
Heat-
treatment
|
|
pin
|
Carburized boundary zone with bigger contents of residual austenite,core zone consists of stress-relieved martensite with acerous structure
|
carburized
|
|
bushing
|
Carburized boundary zone with some deviations,the microstructure consists of stress-relieved martensite with a rough acerous structure
|
carburized
|
|
Outer plate
|
Boundary zone with decarburization(Ret=0.023mm)
The microstructure consists of stress-relieved martensite with a fine acerous structure
|
tempered
|
|
Inner plate
|
The microstructure consists of stress-relieved martensite with a fine acerous structure
|
tempered
|
Witra 2.Bemusterung TV chain eng Dr.T.Wolf
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 5 of 17
Measuring of hardness:
|
Chain part
|
Measuring of harding 10B-1 TV Chain
|
|
HRC HV10 HV30
|
CHD
|
|
pin
|
|
635
|
|
0.28-0.43mm
|
|
|
622
|
|
|
|
713
|
|
|
bushing
|
|
695
|
|
0.14-0.20mm
|
|
|
652
|
|
|
|
666
|
|
|
Outer plate
|
37
|
|
|
|
|
48
|
|
|
|
39
|
|
|
|
Inner plate
|
48
|
|
|
|
|
47
|
|
|
|
46
|
|
|
Evaluation of microstructure:
|
Chain part
|
Structural analysis 10B-1 TV-Chain
|
Heat-
treatment
|
|
pin
|
Strong boundary oxidation within the carburized zone (0.077mm)
Transition zone up to core consists of inhomogeneous structures like bainite,perlite and femite
Other pins don’t have those problems,but there boundary zone consists of plane residual austenite
|
carburized
|
|
bushing
|
Carburized boundary zone with some deviations,the microstructure consists of stress-relieved martensite with a rough acerous structure
|
carburized
|
|
Outer plate
|
Boundary zone with decarburization(Ret=0.041mm)
The microstructure consists of stress-relieved martensite with a fine acerous structure
|
tempered
|
|
Inner plate
|
The microstructure consists of stress-relieved martensite with a fine acerous structure
|
tempered
|
Witra 2.Bemusterung TV chain eng Dr.T.Wolf
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 6 of 17
Measuring of hardness:
|
Chain part
|
Measuring of harding 12B-1 TV Chain
|
|
HRC HV10 HV30
|
CHD
|
|
pin
|
|
723
|
|
0.42-0.47mm
|
|
|
752
|
|
|
|
744
|
|
|
bushing
|
|
678
|
|
0.21-0.24mm
|
|
|
684
|
|
|
|
735
|
|
|
Outer plate
|
40
|
|
|
|
|
43
|
|
|
|
45
|
|
|
|
Inner plate
|
42
|
|
|
|
|
42
|
|
|
|
44
|
|
|
Evaluation of microstructure:
|
Chain part
|
Structural analysis 12B-1 TV-Chain
|
Heat-
treatment
|
|
pin
|
Carburized boundary zone
The microstructure consists of stress-relieved martensite with a fine acerous structure
|
carburized
|
|
bushing
|
Carburized boundary zone with some deviations,the microstructure consists of stress-relieved martensite with a rough acerous structure
|
carburized
|
|
Outer plate
|
Boundary zone with decarburization(Ret=0.028mm)
The microstructure consists of stress-relieved martensite with a fine acerous structure
|
tempered
|
|
Inner plate
|
The microstructure consists of stress-relieved martensite with a fine acerous structure
|
tempered
|
Witra 2.Bemusterung TV chain eng Dr.T.Wolf
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 7 of 17
Measuring of hardness:
|
Chain part
|
Measuring of harding 12B-1 TV Chain
|
|
HRC HV10 HV30
|
CHD
|
|
pin
|
|
596
|
|
0.00-0.00mm
|
|
|
580
|
|
|
|
607
|
|
|
bushing
|
|
698
|
|
0.23-0.39mm
|
|
|
746
|
|
|
|
671
|
|
|
Outer plate
|
44
|
|
|
|
|
44
|
|
|
|
47
|
|
|
|
Inner plate
|
42
|
|
|
|
|
42
|
|
|
|
44
|
|
|
Evaluation of microstructure:
|
Chain part
|
Structural analysis 12B-1 TV-Chain
|
Heat-
treatment
|
|
pin
|
The microstructure consists of stress-relieved martensite with a fine acerous structure
|
tempered
|
|
bushing
|
Carburized boundary zone with oxidation layer,the core consists of stress-relieved martensite with a rough acerous structure
|
carburized
|
|
Outer plate
|
Boundary zone with decarburization(Ret=0.125mm)
The microstructure consists of stress-relieved martensite with a fine acerous structure
|
tempered
|
|
Inner plate
|
Boundary zone with decarburization(Ret=0.084mm)
The microstructure consists of stress-relieved martensite with a fine acerous structure
|
tempered
|
Witra 2.Bemusterung TV chain eng Dr.T.Wolf
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 8 of 17
Comparison:
TV-Chain 08B-1:
|
No.
|
part
|
Rating
(max.100%)
|
Weighting-
factor
|
comment
|
|
1
|
Pin
|
60
|
X3
|
Residual austenite
|
|
2
|
Bushing
|
65
|
X3
|
Carburizing deviation,diff.In hardness
|
|
3
|
Outer plate
|
55
|
X2
|
Deap decarburization
|
|
4
|
Inner plate
|
90
|
X2
|
No errors
|
|
5
|
roller
|
50
|
X1
|
Not checked
|
|
Total rating(weighted,max.100)
|
65.00
|
satisfactory
|
Consequence of errors:
Pin:
Low wear resistance and possibility of cracks
due to residual austenite
Bushing:
Low wear resistance due to hardness deviations
Outer plate:
Low dynamic strength due to decarburization areas,
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 9 of 17
Comparison:
TV-Chain 10B-1:
|
No.
|
part
|
Rating
(max.100%)
|
Weighting-
factor
|
comment
|
|
1
|
Pin
|
5
|
X3
|
Strong boundary oxidation inhomogeneous
|
|
2
|
Bushing
|
65
|
X3
|
Carburizing deviation,diff.In hardness
|
|
3
|
Outer plate
|
55
|
X2
|
Deap decarburization
|
|
4
|
Inner plate
|
90
|
X2
|
No errors
|
|
5
|
roller
|
50
|
X1
|
Not checked
|
|
Total rating(weighted,max.100)
|
50.00
|
Just passing
|
Consequence of errors:
Pin:
Low wear due to oxidation
Low dynamic strength due to inhomogeneous microstructure
Bushing:
Low wear resistance due to hardness deviations
Outer plate:
Low dynamic strength due to decarburization areas,
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 10 of 17
Comparison:
TV-Chain 12B-1:
|
No.
|
part
|
Rating
(max.100%)
|
Weighting-
factor
|
comment
|
|
1
|
Pin
|
90
|
X3
|
No errors
|
|
2
|
Bushing
|
65
|
X3
|
Carburizing deviation,diff.In hardness
|
|
3
|
Outer plate
|
55
|
X2
|
Deap decarburization
|
|
4
|
Inner plate
|
90
|
X2
|
No errors
|
|
5
|
roller
|
50
|
X1
|
Not checked
|
|
Total rating(weighted,max.100)
|
73.18
|
satisfactory
|
Consequence of errors:
Pin:
Low wear resistance due to hardness deviations
Outer plate:
Low dynamic strength due to decarburization areas,
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 11 of 17
Comparison:
TV-Chain 16B-1:
|
No.
|
part
|
Rating
(max.100%)
|
Weighting-
factor
|
comment
|
|
1
|
Pin
|
70
|
X3
|
Only yempered
|
|
2
|
Bushing
|
50
|
X3
|
Strong boundary oxidation
|
|
3
|
Outer plate
|
45
|
X2
|
Deap decarburization
|
|
4
|
Inner plate
|
45
|
X2
|
Deap decarburization
|
|
5
|
roller
|
50
|
X1
|
Not checked
|
|
Total rating(weighted,max.100)
|
53.64
|
Just passing
|
Consequence of errors:
Pin:
Low wear resistance due to low surface hardness
Bushing:
Low wear resistance due to boundary oxidation/low hardness
Outer plate:
Low dynamic strength due to decarburization areas,
Inner plate:
Low dynamic strength due to decarburization areas,
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 12 of 17
Bild 1
Bildname:
diverseAsia_2032_000029
Schliffnummer:22539
Bezeichnung:
Pin 08B-1 TV Chain
Comment: residual austenite boundary zone
Witra 2.Bemusterung TV chain eng Dr.T.Wolf
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 13 of 17
Bild 2
Bildname:
diverseAsia_2032_000030
Schliffnummer:
Bezeichnung:
Pin 08B-1 TV Chain
Comment: carburization zone with deviation in case hardening
Bild 3
Bildname:
diverseAsia_2032_000031
Schliffnummer:22538
Bezeichnung:
Outer plate 08B-1 TV Chain
Comment: boundary decaburization
Witra 2.Bemusterung TV chain eng Dr.T.Wolf
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 14 of 17
Bild 4
Bildname:
diverseAsia_2032_000026
Schliffnummer:22542
Bezeichnung:
Pin 10B-1 TV Chain
Comment: boundary oxidation
Bild 5
Bildname:
diverseAsia_2032_000027
Schliffnummer:22542
Bezeichnung:
Pin 10B-1 TV Chain
Comment: transition and core zone with inhomogeneous
Microstructure, bainite and ferrite within martensite matrix
Witra 2.Bemusterung TV chain eng Dr.T.Wolf
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 15 of 17
Bild 6
Bildname:
diverseAsia_2032_000028
Schliffnummer:22542
Bezeichnung:
Pin 10B-1 TV Chain
Comment: carburization zone with residual austenite
Bild 7
Bildname:
diverseAsia_2032_000035
Schliffnummer:
Bezeichnung:
Outer plate 12B-1 TV Chain
Comment: boundary decaburization
Witra 2.Bemusterung TV chain eng Dr.T.Wolf
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 16 of 17
Bild 8
Bildname:
diverseAsia_2032_000036
Schliffnummer:
Bezeichnung:
Outer plate 16B-1 TV Chain
Comment: boundary decaburization
Bild 9
Bildname:
diverseAsia_2032_000037
Schliffnummer:22563
Bezeichnung:
Inner plate 16B-1 TV Chain
Comment: boundary decaburization
Witra 2.Bemusterung TV chain eng Dr.T.Wolf
Inspection report
Department laboratory-Material testing
Company: TV Chain 2nd sampling
Article: Diverse Rollenketten 22.10.13
QM-Nr. Lab order No.2032 page 17 of 17
Bild 10
Bildname:
diverseAsia_2032_000038
Schliffnummer:22562
Bezeichnung:
Bushing 16B-1 TV Chain
Comment: boundary oxidation
Bild 11
Bildname:
diverseAsia_2032_000039
Schliffnummer:22553
Bezeichnung:
Outer plate 16B-1 TV Chain
Comment: boundary decaburization
Witra 2.Bemusterung TV chain eng Dr.T.Wolf
*This TV chain inspection report paper scaning documents in PDF: TV chain inspection report