parts and more compact 105 mm × 210 mm picks · parts and more compact picks ... the carbide in...
TRANSCRIPT
105 mm × 210 mm
RoAd And MineRAl tecHnologies
pARts And moRe CompACtpICks
www.wirtgen-group.com
105 mm × 210 mm
Contents
105 mm × 210 mm
2 I 3
AdvAntAges PAge 4
Original Wirtgen picks Page 4
Quality tools Page 6
FActs PAge 8
the components of a pick Page 8
the carbide tip Page 10
the brazing Page 12
the steel body Page 14
the wear plate Page 16
the clamping sleeve Page 18
the system Long Life (LL) Page 20
the system Extended run (Xr) Page 24
APPlicAtion PAge 26
Pick designation Page 26
Pick selection Page 27
Optimum wear Page 32
Milling depth and wear Page 36
Wear patterns (optimum) Page 38
Usage recommendations Page 42
System comparison Xr Page 48
Wear patterns (undesirable) Page 50
Contents
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
good economy is well worthwhile
Economy as the relationship between the success achieved
and equipment used depends on many factors, particularly in
the case of complex construction machines. In this respect, the
cutting technology, and especially the pick as an outstanding
product of Wirtgen cutting, plays a central role.
Pick
oRIGInAL WIRtGen pICks
105 mm × 210 mm
4 I 5
Road milling machine Stabilizer
the formula “A low pick price results in good economy” does
not apply in this case.
A look at reality shows:
the list of influencing factors is long and varied. Starting with
the longer service life of the tools, to the minimization of stop-
page times by means of ease of use and on to the high level of
specialization for the many different applications. the con-
sumption of picks can be reduced significantly.
this brochure gives you the opportunity to get to know the full range of Wirtgen picks for road mill-ing machines, recyclers and stabilizers, enabling you to find the most economical option for your construction site operations in every situation.
oRIGInAL WIRtGen pICks
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
competent partnership
When construction machine and tool manufacturers pool their
expertise, this has many benefits for you as the customer.
this close cooperation allows rapid reaction to the needs and
suggestions of customers. the design and production of all
types of cutting tools at BEtEK, perfectly matched to the dif-
ferent machine types of Wirtgen, ensure the maximum perfor-
mance capability of both the machine and pick in service.
QuALIty tooLs foR hIGh-peRfoRmAnCe mILLInG mAChInes
105 mm × 210 mm
6 I 7
this close cooperation shows:
Due to their individual design, picks are not classical bought-in
parts. Only in combination with the corresponding, highly spe-
cialized Wirtgen machines can this regularly give the optimum
milling result with maximum productivity.
summary: the combination of both these areas of expertise forms the basis for the best pos-sible service and greatest economy of your machines in daily use.
QuALIty tooLs foR hIGh-peRfoRmAnCe mILLInG mAChInes
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
1
2
3
4
5
the Components of A pICk
105 mm × 210 mm
8 I 9
the Components of A pICk
Picks for road milling machines, recyclers and stabilizers
usually consist of five components:
1 Carbide tip2 Brazing3 Steel body4 Wear plate5 Clamping sleeve
the design varies from pick to pick, since they are designed for
different application areas, although the components and their
function are always identical.
Road milling pick W7 E H R
Stabilizing pick W1-17 / 22 R
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
the CARbIde tIp – tunGsten CARbIde And CobALt WIth A peRfeCt bond
the carbide in our tips is a composite material made from
tungsten carbide and cobalt. While the tungsten carbide pro-
vides extreme hardness and resistance to wear, the compara-
tively “soft” cobalt bonds the tungsten carbide particles to
ensure maximum breaking strength under even the greatest
stresses.
1 Carbide under the microscope
2 Cobalt is deformed and creates a bond between the tungsten carbide particles, with a propor-tion by weight of approx. 6%
3 Tungsten carbide is very hard, and provides the wear resist-ance, with a proportion by weight of approx. 94%
1
105 mm × 210 mm
10 I 11
the CARbIde tIp – tunGsten CARbIde And CobALt WIth A peRfeCt bond
2 3
the balanced mixture of different particle sizes of the tungsten
carbide largely determines the wear of the tips. the fine parti-
cles ensure high wear resistance, while the coarse particles
provide the necessary breaking strength and temperature
resistance. the incorrect mixing ratio of coarse and fine parti-
cles causes increased wear in the high-temperature cutting
process, which results in premature failure of the tool.
Stringent quality controls at BEtEK ensure the consistent and
correct mixing ratio.
summary: the quality of the carbide determines the service life of the pick, and consequently also the ma-chine availability, its milling performance and the quality of your site operations.
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
the bRAzInG – ReLIAbLe hoLd of the CARbIde tIp on the steeL body
the carbide tips are brazed firmly to the steel body. Since the
carbide in the tip and the steel in the steel body expand at
different rates as soon as the enormously high temperatures
generated in the milling process act on the components, we
use a brazing process developed in-house, which under the
effect of heat ultimately determines the hardness of the steel
body.
this is confirmed by numerous stress tests: Even under enor-
mous pick stresses, no breakage occurs. the carbide tip and
steel body hold firmly together.
The brazing
summary: the careful brazing of the tungsten carbide tip and the steel body ensures the firm bond of the materials.
105 mm × 210 mm
12 I 13
the bRAzInG – ReLIAbLe hoLd of the CARbIde tIp on the steeL body
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
the pick head must withstand enormous shear forces and
impact stresses. At the same time, the pick must sit firmly and
unbreakably in the toolholder throughout its complete service
life. Wirtgen picks have a steel body which perfectly combines
the two properties of wear resistance and breaking strength.
Different hardness levels for the pick head and shaft are pro-
duced in a special operation: While the tough pick shaft ab-
sorbs the forces occurring in the area of the toolholder, the pick
head undergoes extra hardening, making it particularly wear-
resistant in direct contact with the milling material.
Put to the test: A 300 kg weight hits the pick from a height of 1.5 m
the steeL body – hARd At the top And touGh At the bottom
105 mm × 210 mm
14 I 15
summary: the relationship of hardness to toughness of the pick head and shaft largely determines the service life and usability of the pick.
the steeL body – hARd At the top And touGh At the bottom
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
the WeAR pLAte – WeAR pRoteCtIon And InstALLAtIon AId
Wear protection
the design of the pick plays a decisive role for the wear char-
acteristics of the toolholder. Wirtgen picks are therefore de-
signed with a wear plate exactly matched to the toolholder,
which completely covers the upper part of the toolholder (the
plate outer diameter is 45 mm), and therefore absorbs a large
part of the wear stress.
105 mm × 210 mm
16 I 17
the WeAR pLAte – WeAR pRoteCtIon And InstALLAtIon AId
the plate is made of high-quality tempered spring steel, 4 mm
thick, and is conically shaped for chamfering to the shaft. the
chamfer fits accurately into the holder guide, and ensures that
the pick is continually re-centred in the toolholder.
the installation aid
In the delivery condition, the clamping sleeve of the pick is
pre-tensioned by the wear plate. the pick can therefore be
fitted easily to the upper part of the toolholder, requiring only a
few operations to install the pick ready for use.
Effective protection: The wear plate completely covers the toolholder contact surface
summary: the wear plate ensures even wear of the toolholder contact surface and reduced lengthwise wear of the toolholders, and also enables easy and quick installation of the pick.
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
1
thanks to its exact roundness, the cylindrical R-sleeve
ensures optimum pick rotation characteristics.
In contrast to conical sleeves, cylindrical sleeves do not enlarge
the toolholder bore, and reliably prevent asymmetrical wear.
the twin-Stop function with an upper and lower stop enables
the clearly defined lengthwise play of the pick under the chang-
ing stresses during the cutting process. this dramatically re-
duces the risk of damage to the sleeves and/or the number of
pick breakages.
the lower gap width (see Figure 1) results in a larger contact
area between the toolholder bore and sleeve jacket. the com-
paratively high hardness of the clamping sleeve ensures a high
1 The Twin-Stop clamp-ing sleeve with improved rotation characteristics
2 Conventional clamping sleeve with an axial stop in the unprotected area
3 Twin-Stop stops in the protected area for reduced wear
clamping force, which counteracts premature failure in even the
most demanding applications. A special protective film pro-
tects the sleeve against corrosion and therefore enables the
easy dismantling of the pick.
the CLAmpInG sLeeVe – stRonG hoLd And QuICk RepLACement
105 mm × 210 mm
18 I 19
2 3
summary: the holding force is great enough to guarantee a reliable milling process in every situation, and simultaneously low enough to allow uncompli-cated and quick pick replacement.
the CLAmpInG sLeeVe – stRonG hoLd And QuICk RepLACement
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
the system LonG LIfe foR pICks WIth 20 mm shAft dIAmeteR
1
105 mm × 210 mm
20 I 2120 I 21
the system LonG LIfe foR pICks WIth 20 mm shAft dIAmeteR
the pick generation LL (Long Life) with 20 mm shaft diameter
has been specially developed for wear-intensive applications,
and offers significant advantages.
Since practical experience has shown that the usual wear
plate thickness of 4 mm is not enough for some applications in
the field of road milling, the wear plate thickness of the LL
series has been increased to 5 mm (and up to 7 mm at the
outer edge). this makes it significantly more resistant and also
suitable for use under extreme conditions.
1 W7 E H LL (Part No.: 2152111)
2 LL pick for extreme applica-tions in the field of road milling
2
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
the system LonG LIfe foR pICks WIth 20 mm shAft dIAmeteR
In comparison to conventional picks with wear plate, LL picks
differ by means of a labyrinth, formed by the pick head, wear
plate and clamping sleeve (see comparison on the following
page).
the penetration of fine particles of milled material into the
toolholder bore and the cavity between the clamping sleeve
and pick shaft usually leads to impairment of the rotation char-
acteristics. the clamping sleeve wear is also greatly acceler-
ated, with resulting reduced service life of the pick.
the labyrinth seal ensures reduced penetration of fine
particles. the wall thickness of the clamping sleeve is also
increased to 1.25 mm. the overall effect is a significant im-
provement in the service life of the cutting tools.
summary: the LL pick generation for road milling ma-chines guarantees a significant extension of the service life. In extreme application cases, this greatly improves the efficiency of the cutting tools.
105 mm × 210 mm
22 I 23
the system LonG LIfe foR pICks WIth 20 mm shAft dIAmeteR
Previous version (R) Current version (LL)
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
the system extended Run foR pICks WIth 22 mm shAft dIAmeteR
the pick generation XR has been optimized with regard to
the wear mechanisms occurring with stabilizer and recy-
cler picks with 22 mm shaft diameter, because these place
quite different requirements on the individual components.
Experience has shown that in this segment in particular, the
pick head is also subject to wear, in addition to the carbide tip.
Previous standard tools obtain their material characteristics
such as hardness and toughness due to the brazing process.
103 mm × 210 mm
24 I 25
the system extended Run foR pICks WIth 22 mm shAft dIAmeteR
By decoupling of the cone, a range of previously unachievable
combinations of characteristics can be realized.
the core of the pick and carrier of the carbide is particularly
tough, and therefore less prone to breakage, while the
jacket, i.e. the wear cone, is particularly hard and resistant.
the wear cone mounted on the pick head is particularly solid
and massive, in order to guarantee reduced and even wear of
all components (carbide tip, wear cone etc.).
In applications involving extreme ground conditions, tool
breakage sometimes occurs due to rocks or reinforcement.
Since in the Xr series (with 22 mm shaft diameter) the cone is
made of significantly more wear-resistant material than the pick
head of conventional picks, the toolholder remains protected
longer, even following complete loss of the carbide tip.
if a pick replacement can no longer be pushed on it can,
like all picks of the R series, be easily fitted by means of
the pre-tensioned clamping sleeve and fitted with little
effort.
95 mm × 210 mm
AdvAntAges FActs ApplicAtion
pICk desIGnAtIon
Designation Meaning of the abbreviation Description
W Wirtgen Pick
WMWirtgen Mini-pick for small milling machines
Special pick for small milling machines (clamp-ing sleeve or shaft design without wear plate)
Designations for cap-shaped carbide tips
W4 Basic diameter 16 mm
W5 EW5 Extended
Basic diameter 17.5 mm (only available as 16 mm extended version (E))
W6 Basic diameter 19 mm (Length: 17.5 mm)
W6 EW6 Extended
Basic diameter 19 mm (extended version: 19.6 mm)
W7 E
W7 Extended
Basic diameter 20.5 mm (only available as 20.5 mm extended version (E))
W8 Basic diameter 22 mm (Length: 20 mm)
W8 EW8 Extended
Basic diameter 22 mm (extended version: 23 mm)
W6 SGW6 Stony Ground
flat tip with basic diameter of 19 mm (ground stabilization)
W6 AOC
W6 Asphalt Over Concrete
with webs, basic diameter 19 mm (Special application: Concrete milling; soft asphalt layer and hard substrate)
Designations for cylindrical carbide tips
W1 - Additional designation for cylindrical tips for picks for road milling, recycler and stabilization work
95 mm × 210 mm
the selection of the right pick is decisive for your suc-
cess. Due to the many different application areas in the field
of road construction and stabilization, the following graphic
provides you with an overview of the variety of Wirtgen
picks – a range designed because of the host of possible
applications with Wirtgen machines.
the tabular overview (pages 26 and 31) provides you with a
detailed overview of the different pick designations, including
all available and all possible dimensions and descriptions.
01 the carbide tips
a) Cap-shaped carbide tips are available in seven different sizes (W4, W5 E, W6, W6 E, W7 E, W8, W8 E), which vary in their basic diameter, and with the designation E also in length.
b) the cap-shaped carbide tip W6 SG has the same diameter as the W6 tip. the greatly flattened tip has been specially de-signed for stony ground in the application area of ground stabilization.
c) the cap-shaped carbide tip W6 AOC has the same diameter as the W6 tip. the tip is equipped with webs, and is used in special applications (soft top layer and hard substrate).
d) Cylindrical carbide tips are available in five different sizes (- 10, - 13, - 15, - 17, - 19). the number after the dash indi-cates the diameter of the tips in millimetres.
02 the pick heads
a) Pick heads without an extraction groove are designated by the letter H (only for Ø 20 mm shaft). this designation letter is not shown for picks with a 22 mm shaft, since they have no extraction groove.
b) Pick heads with an extraction groove can be identified by the absence of the designation letter H (only for Ø 20 mm shaft).
c) the voluminous pick heads with the designation letter S constitute the group of stabilization and recycling picks (only for Ø 20 mm shaft).
the RIGht pICk seLeCtIon
103 mm × 210 mm
AdvAntAges FActs ApplicAtion
01 Carbide tips
a)
a) b)
a) b)
a)
b)
b) c)
02 Pick heads
03 Shaft design
04 Wear elements
d)
d) Extended pick heads with embedded, cylindrical carbide tip for optimum concrete milling characteristics (Ø 20 mm shaft).
e) Particularly large pick head with cylindrical carbide tip for stabi-lization of stony ground and recycling applications (Ø 22 mm shaft).
f) the two-in-one pick head has a wear cone, instead of a con-ventional wear plate, which simultaneously forms the holder protection and the pick head (Ø 22 mm shaft).
the RIGht pICk seLeCtIon
103 mm × 210 mm
c) d)
c)
e)
d) e)
e) f)
c) d)
g) h)
g) Large and robust pick head with cap-shaped carbide tip for ground stabilization and cold recycling under extreme condi-tions (Ø 25 mm shaft).
h) Large pick head with cylindrical carbide tip for ground stabiliza-tion and cold recycling under extreme conditions (Ø 25 mm shaft).
the RIGht pICk seLeCtIon
95 mm × 210 mm
27 I 30
03 the shaft design
a) Pick shafts (Ø 20 mm) with twin-Stop clamping sleeve and wear plate carry the designation r.
b) Pick shafts for road milling machines (Ø 20 mm) with in-creased wall thickness of the twin-Stop clamping sleeve and a thicker wear plate carry the designation LL.
c) Pick shafts (Ø 22 mm) with twin-Stop clamping sleeve and 45 mm wear plate with additionally reinforced edge carry the designation r.
d) Pick shafts (Ø 22 mm) with twin-Stop clamping sleeve and wear cone carry the designation Xr.
e) Pick shafts (Ø 25 mm) with twin-Stop clamping sleeve and 60 mm wear plate with additionally reinforced edge carry the designation r.
04 the wear elements for the holder protection
a) Conventional wear plates with a material thickness of 4 mm for picks with a 20 mm shaft diameter carry the designa-tion r.
b) Wear plates (outer Ø 45 mm) with additionally reinforced edge for picks with a 20 mm shaft diameter carry the designa-tion LL.
c) Wear plates (outer Ø 45 mm) with additionally reinforced edge for picks with a 22 mm shaft diameter carry the designa-tion r.
d) Wear cone of the pick series Xr with a 22 mm shaft diameter.
e) Large wear plate with an outer diameter of 60 mm and addi-tionally reinforced edge for picks with a 25 mm shaft diameter carry the designation r.
the RIGht pICk seLeCtIon
95 mm × 210 mm
26 I 31
Designation Meaning of the abbreviation Description
Designations for cylindrical carbide tips
- The following number specifies the diameter of the cylindrical tips
- 10 Diameter 10 mm
- 13 Diameter 13 mm
- 15 Diameter 15 mm
- 17 Diameter 17 mm
- 19 Diameter 19 mm
Designations for additional features of the pick
/ The following number specifies the shaft diameter of the pick
/ 13 Shaft diameter 13 mm
/ 22 Shaft diameter 22 mm
/ 25 Shaft diameter 25 mm
EExtended
For picks with extended carbide tip
H For picks without extraction groove (only for picks with a 20 mm shaft diameter)
RRotary
For picks with clamping sleeve with Twin-Stop function (Rotary system)
LL
Long Life
For picks with clamping sleeve with Twin-Stop function and reinforced wear plate (picks with a 20 mm shaft diameter)
/ 22 XR
Extended Run
For picks with clamping sleeve with Twin-Stop function and wear cone (only for picks with a 22 mm shaft diameter)
S
Stabilizing
For picks with voluminous pick head for stabilization and recycling (only for picks with a 20 mm shaft diameter)
103 mm × 210 mm
AdvAntAges FActs ApplicAtion
the optImum WeAR of the pICk
the correct assessment of the wear to Wirtgen picks is an
essential requirement for smooth and efficient project handling.
replacing a pick at the right time guarantees successful work-
ing, and ultimately also reduces operating costs significantly.
Many influencing factors must be taken into account when
assessing the condition of picks: From the milling material to
the weather, the machine performance, the machine advance
speed and on to proper maintenance. Wear patterns and ob-
servation of the maximum wear lengths help to avoid missing
the correct replacement time, and prevent typical errors in
applications.
Pick W4 e R W5 e R W5 e H R W6 R W6 H R W6 e R W6 e H R W6 s R
Max. wear index for pick replacement
9.1 8.6 8.8 9.4 9.4 11.6 11.6 9.4
Length new 88 88 88 88 88 88 88 88
Length optimum wear 78.90 79.40 79.40 78.60 78.60 76.40 76.40 78.60
105 mm × 210 mm
32 I 33
Pick profi le gauge (Part No.: 193940)
the optImum WeAR of the pICk
Pick W4 e R W5 e R W5 e H R W6 R W6 H R W6 e R W6 e H R W6 s R
Max. wear index for pick replacement
9.1 8.6 8.8 9.4 9.4 11.6 11.6 9.4
Length new 88 88 88 88 88 88 88 88
Length optimum wear 78.90 79.40 79.40 78.60 78.60 76.40 76.40 78.60
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
the optImum WeAR of the pICk
Pick W6 sg R W6 Aoc R W7 e R W7 e H R W8 e H R W1-10 R W1-13 R W1-15 R W6 / 22 XR
Max. wear index for pick replacement
1.5 9.4 12 12 13.6 18.5 17.3 15.8 9.4
Length new 80 88 88 88 88 88 88 88 92
Length optimum wear
78.50 78.60 76.00 76.00 74.40 69.50 70.70 72.20 82.60
PickW6 sg /22 XR
W6 Aoc /22 XR
W8 / 22 XR
W1-13 /22 R
W1-17 /22 R
W6 sg /25 R
W8 /25 R
W1-15 /25 R
W1-19 /25 R
Max. wear index for pick replacement
1.5 9.4 11 18.5 18.3 1.5 11.2 16 17
Length new 84 92 92 92 92 113 113 113 113
Length optimum wear
82.50 82.60 81.00 73.50 73.70 111.50 101.80 97.00 96.00
105 mm × 210 mm
34 I 35
the optImum WeAR of the pICk
Pick W6 sg R W6 Aoc R W7 e R W7 e H R W8 e H R W1-10 R W1-13 R W1-15 R W6 / 22 XR
Max. wear index for pick replacement
1.5 9.4 12 12 13.6 18.5 17.3 15.8 9.4
Length new 80 88 88 88 88 88 88 88 92
Length optimum wear
78.50 78.60 76.00 76.00 74.40 69.50 70.70 72.20 82.60
PickW6 sg /22 XR
W6 Aoc /22 XR
W8 / 22 XR
W1-13 /22 R
W1-17 /22 R
W6 sg /25 R
W8 /25 R
W1-15 /25 R
W1-19 /25 R
Max. wear index for pick replacement
1.5 9.4 11 18.5 18.3 1.5 11.2 16 17
Length new 84 92 92 92 92 113 113 113 113
Length optimum wear
82.50 82.60 81.00 73.50 73.70 111.50 101.80 97.00 96.00
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
mILLInG depth And ResuLtInG WeAR to pICks
in addition to the material in question, the most important
influencing factors for the milling performance are the
milling depth and the machine advance speed.
105 mm × 210 mm
36 I 3736 I 37
mILLInG depth And ResuLtInG WeAR to pICks
summary and practical tip: In some applications, the required milling depth is greater than 200 mm; in this case, it may be well worthwhile to remove the layers in several operations (cuts), since the advance per cut is increased and the wear to the picks per cubic metre can be reduced.
A Travel of the pick per cut in mmB Milling depth in mmC Theoretical milling volume in m³/h
Travel of the pick per cut in mm Theoretical milling volume (solid material) in m³/h Area of maximum milling volume performance
A major but often overlooked detail: At different milling depths,
the cutting profile of the pick, and therefore the chip size of the
milled material differ significantly.
this has a direct effect on the milling performance and the
wear to picks and toolholders. Wirtgen large milling machines
produce the maximum milling performance and lowest wear
costs at a milling depth of 75 mm to 150 mm.
it can therefore be said in summary that the maximum
economy can be achieved at these milling depths.
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
the optImum WeAR to the pICk – WeAR pAtteRns
Picks with a cap-shaped carbide tip
this shows an example of an ideally worn pick. this can be
seen from the carbide tip worn to the maximum and the even
radial wear to the pick head.
103 mm × 210 mm
the optImum WeAR to the pICk – WeAR pAtteRns
Picks with a cap-shaped carbide tip
and chamfered wear plate
this result is almost ideal, since here too the pick shows radial
wear, as in the previous example. In the further milling process,
the operator should keep an eye on the condition of the already
very chamfered wear plate, because if it becomes too severely
worn, it no longer protects the toolholder properly against wear
to the contact surface.
95 mm × 210 mm
the optImum WeAR to the pICk – WeAR pAtteRns
Picks with a cylindrical carbide tip
the figure shows an optimally worn pick with optimum rota-
tion, which is completely worn over its whole length, and
must therefore be replaced.
95 mm × 210 mm
38 I 4138 I 41
the optImum WeAR to the pICk – WeAR pAtteRns
Picks with a cap-shaped carbide tip
Good general condition of the pick with the exception of the
wear plate. this is too severely worn in terms of its diameter.
the steel body (with tip) however is only one-third worn. the
pick indicates optimum rotation characteristics.
95 mm × 210 mm
usAGe ReCommendAtIon foR pICksWIRtGen RoAd mILLInG mAChInes
* Version with fine milling drums and micro fine milling drums with toolholder system HT4 and HT04
Machine typeUsed in
soft asphalt medium-hard asphalt hard asphalt Concrete
SF300 C, W 350, W 350 E, W 35, W 35 DC, SF 500 C-C/3-C/4, W 500, W 50, W 50 DC*
WM4 / 13 Part No.: 182598
WM1 / 13 Part No.: 193701
SF 300 C
W4 E r Part No.: 2088082
W1-10 r Part No.: 2088081
W 350, W 350 E
W 35, W 35 DC
SF 500 C-C/3-C/4
W 500
W 50, W 50 DC
W5 E r Part No.: 2088085
W5 E H r Part No.: 2088095
W6 E r Part No.: 2088087
W6 E H r Part No.: 2088103
W1-13 r Part No.: 2088090
500 DC
SF 1000 C / CBA
W 600 DC / W 1000 L
W 1000
W 60 / W 100
W 1000 F, W 1200 F, W 1300 F
W6 E r Part No.: 2088087
W6 E H r Part No.: 2088103
W6 r Part No.: 2069413
W6 H r Part No.: 2069412
W1-13 r Part No.: 2088090
W 100 F, W 120 F, W 130 F
1300 - 1500 DC
W 150
1900 - 2000 DC
W 1500
W 1900
W 200
W 2000
W6 r Part No.: 2069413
W6 H r Part No.: 2069412
W7 E H r Part No.: 2064871
W7 E H LL Part No.: 2152111
W8 E H r Part No.: 2088104
2100 DC
W1-15 r Part No.: 2088093
W 210
W 2100
W 2200
95 mm × 210 mm
usAGe ReCommendAtIon foR pICksWIRtGen RoAd mILLInG mAChInes
* Version with fine milling drums and micro fine milling drums with toolholder system HT4 and HT04
Machine typeUsed in
soft asphalt medium-hard asphalt hard asphalt Concrete
SF300 C, W 350, W 350 E, W 35, W 35 DC, SF 500 C-C/3-C/4, W 500, W 50, W 50 DC*
WM4 / 13 Part No.: 182598
WM1 / 13 Part No.: 193701
SF 300 C
W4 E r Part No.: 2088082
W1-10 r Part No.: 2088081
W 350, W 350 E
W 35, W 35 DC
SF 500 C-C/3-C/4
W 500
W 50, W 50 DC
W5 E r Part No.: 2088085
W5 E H r Part No.: 2088095
W6 E r Part No.: 2088087
W6 E H r Part No.: 2088103
W1-13 r Part No.: 2088090
500 DC
SF 1000 C / CBA
W 600 DC / W 1000 L
W 1000
W 60 / W 100
W 1000 F, W 1200 F, W 1300 F
W6 E r Part No.: 2088087
W6 E H r Part No.: 2088103
W6 r Part No.: 2069413
W6 H r Part No.: 2069412
W1-13 r Part No.: 2088090
W 100 F, W 120 F, W 130 F
1300 - 1500 DC
W 150
1900 - 2000 DC
W 1500
W 1900
W 200
W 2000
W6 r Part No.: 2069413
W6 H r Part No.: 2069412
W7 E H r Part No.: 2064871
W7 E H LL Part No.: 2152111
W8 E H r Part No.: 2088104
2100 DC
W1-15 r Part No.: 2088093
W 210
W 2100
W 2200
103 mm × 210 mm
usAGe ReCommendAtIon foR pICksWIRtGen RoAd mILLInG mAChInes
* Version with fine milling drums and micro fine milling drums with toolholder system HT4 and HT04
Machine typeUsed in
soft asphalt medium-hard asphalt hard asphalt Concrete
SF300 C, W 350, W 350 E, W 35, W 35 DC, SF 500 C-C/3-C/4, W 500, W 50, W 50 DC*
WM4 / 13 Part No.: 182598
WM1 / 13 Part No.: 193701
SF 300 C
W4 E r Part No.: 2088082
W1-10 r Part No.: 2088081
W 350, W 350 E
W 35, W 35 DC
SF 500 C-C/3-C/4
W 500
W 50, W 50 DC
W5 E r Part No.: 2088085
W5 E H r Part No.: 2088095
W6 E r Part No.: 2088087
W6 E H r Part No.: 2088103
W1-13 r Part No.: 2088090
500 DC
SF 1000 C / CBA
W 600 DC / W 1000 L
W 1000
W 60 / W 100
W 1000 F, W 1200 F, W 1300 F
W6 E r Part No.: 2088087
W6 E H r Part No.: 2088103
W6 r Part No.: 2069413
W6 H r Part No.: 2069412
W1-13 r Part No.: 2088090
W 100 F, W 120 F, W 130 F
1300 - 1500 DC
W 150
1900 - 2000 DC
W 1500
W 1900
W 200
W 2000
W6 r Part No.: 2069413
W6 H r Part No.: 2069412
W7 E H r Part No.: 2064871
W7 E H LL Part No.: 2152111
W8 E H r Part No.: 2088104
2100 DC
W1-15 r Part No.: 2088093
W 210
W 2100
W 2200
103 mm × 210 mm
usAGe ReCommendAtIon foR pICksWIRtGen CoLd ReCyCLeRs And soIL stAbILIzeRs
Machine type Shaft diameterUsed in
Soil stabilization Stabilization of stony soil Cold recycling
WS 2000WS 2500WS 220WS 250
20 mmW6 S r Part No.: 2088106
W6 SG r Part No.: 2088110
22 mmW6 / 22 Xr Part No.: 2143715
W6 SG / 22 Xr Part No.: 2143714
W1-17 / 22 r Part No.: 2088112
25 mmW8 / 25 r Part No.: 2143236
W1-15 / 25 r Part No.: 2143497
W6 SG / 25 r Part No.: 2143486
WR 2000WR 2400RACO 350WR 2500WR 2500 S
20 mmW6 S r Part No.: 2088106
W6 SG r Part No.: 2088110
W6 S r Part No.: 2088106
22 mm
W6 / 22 Xr Part No.: 2143715
W6 SG / 22 Xr Part No.: 2143714
W6 AOC / 22 Xr Part No.: 2143716
W8 / 22 Xr Part No.: 2143717
W1-17 / 22 r Part No.: 2088112
W8 / 22 Xr Part No.: 2143717
25 mmW8 / 25 r Part No.: 2143236
W1-19 / 25 r Part No.: 2143499
W6 SG / 25 r Part No.: 2143486
W6 SG / 25 r Part No.: 2143486
W8 / 25 r Part No.: 2143236
95 mm × 210 mm
usAGe ReCommendAtIon foR pICksWIRtGen CoLd ReCyCLeRs And soIL stAbILIzeRs
Machine type Shaft diameterUsed in
Soil stabilization Stabilization of stony soil Cold recycling
WS 2000WS 2500WS 220WS 250
20 mmW6 S r Part No.: 2088106
W6 SG r Part No.: 2088110
22 mmW6 / 22 Xr Part No.: 2143715
W6 SG / 22 Xr Part No.: 2143714
W1-17 / 22 r Part No.: 2088112
25 mmW8 / 25 r Part No.: 2143236
W1-15 / 25 r Part No.: 2143497
W6 SG / 25 r Part No.: 2143486
WR 2000WR 2400RACO 350WR 2500WR 2500 S
20 mmW6 S r Part No.: 2088106
W6 SG r Part No.: 2088110
W6 S r Part No.: 2088106
22 mm
W6 / 22 Xr Part No.: 2143715
W6 SG / 22 Xr Part No.: 2143714
W6 AOC / 22 Xr Part No.: 2143716
W8 / 22 Xr Part No.: 2143717
W1-17 / 22 r Part No.: 2088112
W8 / 22 Xr Part No.: 2143717
25 mmW8 / 25 r Part No.: 2143236
W1-19 / 25 r Part No.: 2143499
W6 SG / 25 r Part No.: 2143486
W6 SG / 25 r Part No.: 2143486
W8 / 25 r Part No.: 2143236
95 mm × 210 mm
usAGe ReCommendAtIon foR pICksWIRtGen CoLd ReCyCLeRs And soIL stAbILIzeRs
Machine type Shaft diameterUsed in
Soil stabilization Stabilization of stony soil Cold recycling
WS 2000WS 2500WS 220WS 250
20 mmW6 S r Part No.: 2088106
W6 SG r Part No.: 2088110
22 mmW6 / 22 Xr Part No.: 2143715
W6 SG / 22 Xr Part No.: 2143714
W1-17 / 22 r Part No.: 2088112
25 mmW8 / 25 r Part No.: 2143236
W1-15 / 25 r Part No.: 2143497
W6 SG / 25 r Part No.: 2143486
WR 2000WR 2400RACO 350WR 2500WR 2500 S
20 mmW6 S r Part No.: 2088106
W6 SG r Part No.: 2088110
W6 S r Part No.: 2088106
22 mm
W6 / 22 Xr Part No.: 2143715
W6 SG / 22 Xr Part No.: 2143714
W6 AOC / 22 Xr Part No.: 2143716
W8 / 22 Xr Part No.: 2143717
W1-17 / 22 r Part No.: 2088112
W8 / 22 Xr Part No.: 2143717
25 mmW8 / 25 r Part No.: 2143236
W1-19 / 25 r Part No.: 2143499
W6 SG / 25 r Part No.: 2143486
W6 SG / 25 r Part No.: 2143486
W8 / 25 r Part No.: 2143236
95 mm × 210 mm
AdvAntAges FActs ApplicAtion
system comparison with steel washing out
Condition:
the example shown (Figure 1) is one of the Xr pick genera-
tion with a 22 mm shaft diameter, which is equipped with an
extremely resistant wear cone.
system CompARIson of pICk GeneRAtIon xR WIth 22 mm shAft dIAmeteR
1
95 mm × 210 mm
In contrast to the earlier type, this pick is not prone to wash-
ing out under the carbide tip, as is indicated in Figure 2.
Better holder protection is also provided, since in this case
the wear cone can still protect the toolholder after extensive
use in comparison to standard picks.
system CompARIson of pICk GeneRAtIon xR WIth 22 mm shAft dIAmeteR
2
103 mm × 210 mm
AdvAntAges FActs ApplicAtion
undesIRed WeAR – WeAR pAtteRns
carbide breakage
Condition:
Figures 3 and 4 show a carbide tip after breakage due to
overload.
Cause:
there are basically two causes of a carbide breakage:
· Firstly, a mechanical overload may occur, if the surface being milled contains hard objects or materials which cannot be cut or broken, such as steel reinforcements, large rocks or drainage covers.
· Secondly, a thermal overload may be caused by excessive heat generated in the cutting process. this occurs in case of inadequate water supply in the cut of the pick.
3
105 mm × 210 mm
48 I 51
undesIRed WeAR – WeAR pAtteRns
Solution:
· Damage due to mechanical overload is difficult to avoid, since steel reinforcements or large rocks in the substrate cannot be detected before the start of milling.
· In order to prevent a thermal overload, the sprinkler system (water pump, sprinkler bar and its components, such as nozzles and filters) should be checked. A further possibility is to reduce the advance speed of the machine, since this, together with the drum speed, deter-mines the cutting length of the picks. the longer the cutting length, the greater the friction created. this ultimately also leads to overheating of the pick.
4
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
undesIRed WeAR – WeAR pAtteRns
steel body washing out
Condition:
the steel body and wear plate are already severely worn in
comparison to the carbide tip. the pick demonstrates optimum
rotation.
Cause:
One possible cause for this form of wear is a high advance
speed with soft milling material. these conditions usually lead
to washing out at the pick head and reduced wear to the car-
bide tip.
Solution:
there are two means of minimizing this undesired wear:
· Use of a pick with a larger pick head
· reduction of the machine advance speed or machine speed
105 mm × 210 mm
52 I 53
undesIRed WeAR – WeAR pAtteRns
excessive lengthwise wear
Condition:
the pick is completely worn. It has exceeded its maximum
service life, since there is no carbide left to be seen. the tool-
holder has probable been severely damaged at the contact
surface, since it is not protected either by a wear plate or a
pick head.
Cause:
the pick wore out long ago, and was detected much
too late.
Solution:
In order not to exceed the optimum replacement time, regular
checks should be carried out during occasional breaks in the
milling process.
105 mm × 210 mm
AdvAntAges FActs ApplicAtion
undesIRed WeAR – WeAR pAtteRns
clamping sleeve wear
Condition:
the figure shows a conventional clamping sleeve, which due to
its design (without twin-Stop function) has become enlarged
by excessive use.
Cause:
this pick had been in use for a very long time. Even if this
cannot be seen from the pick head and the carbide tip, it can
always be identified from the wear to the wear plate and
clamping sleeve.
Solution:
For the general reduction of this risk, the so-called twin-Stop
function with the designation “r” (with exactly defined length-
wise play) was integrated into the system “rotary”.
105 mm × 210 mm
54 I 55
undesIRed WeAR – WeAR pAtteRns
Bad rotation
Condition:
On this pick with a cylindrical carbide tip, severe wear can be
seen to one side of the pick head and the carbide tip. this is
most probably due to inadequate rotation characteristics.
Cause:
One reason for failure can be dirt in the toolholder bore. this
occurs in the event of inadequate water supply. A further cause
for the bad rotation characteristics can be a severely abraded
toolholder.
Solution:
First, the general condition of the water system should be
checked. It must also be ensured after dismantling the pick
that the toolholder bore is cleaned, and that the toolholder
contact surface is not worn on one side.
105 mm × 210 mm
Illus
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WIrtGEN GMBHreinhard-Wirtgen-Straße 2 53578 Windhagen · Germany
Phone: +49 (0) 26 45/131-0 Fax: +49 (0) 26 45/131-397
E-mail: [email protected] www.wirtgen.de
JOSEPH VÖGELE AG Neckarauer Straße 168-228 68146 Mannheim · Germany
Phone: +49 (0) 621/8105-0 Fax: +49 (0) 621/8105-463
E-mail: [email protected] www.voegele.info
HAMM AG Hammstraße 1 95643 tirschenreuth · Germany
Phone: +49 (0) 9631/80-0 Fax: +49 (0) 9631/80-120
E-mail: [email protected] www.hamm.eu
KLEEMANN GMBHManfred-Wörner-Straße 160 73037 Göppingen · Germany
Phone: +49 (0) 7161/206-0 Fax: +49 (0) 7161/206-100
E-mail: [email protected] www.kleemann.info