gestión de neumáticos mineros
TRANSCRIPT
Mining tire managementMining tire management
Víctor Barrientos
CAP MINERIA – Cerro Negro Norte
Index
1.- Introduction
2.- Methodology
3.- Results
1.- Introduction
3.- Results
4.- Conclusions
Tires
The off-the-road (OTR) tire market is dominated by Michelin and
Bridgestone which support the mining operations at the best use
of tires
As general rules, Michelin/Bridgestone suggest for mining truckAs general rules, Michelin/Bridgestone suggest for mining truck
to use 1/3 of the life of tire in front positions and 2/3 in rear
positions
1/32/3� Maximizes tire performance (Manufacturer)
� Inventory for rear position tires
Index
1.- Introduction
2.- Methodology
3.- Results
2.- Methodology
3.- Results
4.- Conclusions
Job to be done
Clayton Christensen (Disruptive Innovation) creates this concept
Job to be done (JTBD) in not a product / service specific, but
rather: the greater purpose by which people buy products,
service and solutions
All job to be done (JTBD) must respond as follows:
1.- ¿What is the need?
2.- ¿Why does the need exist?
3.- ¿What is the context of this need?
Job to be done
1.- ¿What is the need?
Spend less tires with the minimum investment
2.- ¿Why does the need exist?
Due to the decrease in the sale price of its products, companyDue to the decrease in the sale price of its products, company
presents a financial contingengy situation
3.- ¿What is the context of this need?
In general, efforts are focused on tire performance loses the
focus it should be minimize tire spending
Change in objetive function
Maximize performance Minimize consumption
new tires new tires
Simulation is created that relates the frequency of rotation and
the consumption of new tires. Obtained as resultsthe consumption of new tires. Obtained as results
Rotation at 2.000 hrs Rotation at 2.600 hrs
1/3 2/5
Index
1.- Introduction
2.- Methodology
3.- Results3.- Results3.- Results
4.- Conclusions
3.- Results
15
20
25
30
Un
its
Inventory of used tires for rear positions
2000
0
5
10
15
0 12 24 36
Un
its
Months
2000
15
20
25
30
Un
its
Inventory of used tires for rear positions
2000
0
5
10
15
0 12 24 36
Un
its
Months
2000
2600
Initial
situation
New
scenario
Frequency of rotation 2.000 hrs 2.600 hrs
% of tires worn 70% >= 70%
Logistics time sent 10 – 15 days 2 – 3 days
Critical factors of success
Logistics time sent 10 – 15 days 2 – 3 days
Purchase order time 30 - 35 days 3 - 4 days
Total time 40 – 50 days 5 – 7 days
Used tires inventory (1-36 months) 23,6 un 8,8 un
Used tires inventory (12-36 months) 24,3 un 4,8 un
3224
28
32
36
40
44
48
52
56
Co
nsu
mp
tio
no
f n
ew
tir
es
Initiative impact
in n
ew
tir
es
(u
sd/h
rs)
32
24
0
4
8
12
16
20
24
2015 2016
Co
nsu
mp
tio
n
Años
Do
lla
rsp
er
ho
ur
in n
ew
tir
es
(
- 25%
32
58
39
30
40
50
60
70
24
28
32
36
40
44
48
52
56
Co
nsu
mp
tio
no
f n
ew
tir
es
Initiative impact
in n
ew
tir
es
(u
sd/h
rs)
- 33%
32
24
0
10
20
30
0
4
8
12
16
20
24
2015 2016
Co
nsu
mp
tio
n
Años
Do
lla
rsp
er
ho
ur
in n
ew
tir
es
(
- 25%
40
50
60
70
80
rub
be
r(m
illi
me
ters
)
Tire wear rate 46/90R57
Faena Y
Faena X
20
30
40
0 2.000 4.000 6.000 8.000 10.000
Re
ma
inin
gru
bb
er
Hours (hrs)
Faena X
40
50
60
70
80
rub
be
r(m
illi
me
ters
)
Tire wear rate 46/90R57
Faena Y
Faena X
20
30
40
0 2.000 4.000 6.000 8.000 10.000
Re
ma
inin
gru
bb
er
Hours (hrs)
Faena X
Index
1.- Introduction
2.- Methodology
3.- Results3.- Results
4.- Conclusions4.- Conclusions
Conclusions
� For the mining work under study the increase in rotation
frequency 2.000 to 2.600 hours allowed a 33% decrease in the
tire costs per hours (Simulations)
� To support this strategy requires a logistics dispatch and repair� To support this strategy requires a logistics dispatch and repair
of reduced time tires
� The times of quotation, approval purchase orders should be
equally reduced
Conclusions
� A fast tire repair system and a high percentage of scrap tires
due to wear are fundamental requirements for the
implementation of this strategy
� In the same way the efforts to improve the uses of the tires
must be given bymust be given by
� Operator awareness
� Pit conditions
� Tire maintenance
� Tire monitoring & management
� Top management support
¿Questions?¿Questions?