U.S. patent application number 10/739424 was filed with the patent office on 2004-07-29 for wear components in a laminar structure in a paper of cardboard machine, and the procedure for its production and usage.
Invention is credited to Bidlingmaier, Bernd, Gadow, Rainer, Killinger, Andreas.
Application Number | 20040144514 10/739424 |
Document ID | / |
Family ID | 7689189 |
Filed Date | 2004-07-29 |
United States Patent
Application |
20040144514 |
Kind Code |
A1 |
Bidlingmaier, Bernd ; et
al. |
July 29, 2004 |
Wear components in a laminar structure in a paper of cardboard
machine, and the procedure for its production and usage
Abstract
A wear component in a laminar structure, particularly one of a
drainage strip, a deflector, a foil or a suction strip in a paper
or a cardboard machine, where on at least one of its partial
surfaces a medium that causes wear, in particular a fluid or a
material web, such as machine clothing in the form of a sieve or a
felt in the machine is applied. The wear component including a beam
part being made of at least one of plastic, high-grade steel,
copper, nickel, aluminum, zinc, and/or an alloy of the foregoing.
The wear component also including an infeed area with an infeed
angle .beta. for the medium of less than 90.degree. and at least
one low-wear layer on at least one of the partial surfaces. The
low-wear layer being made of a material from a class of
self-fluxing alloys. The low-wear layer being at least partially
thermally re-melted.
Inventors: |
Bidlingmaier, Bernd; (Lorch,
DE) ; Gadow, Rainer; (Aschau, DE) ; Killinger,
Andreas; (Bernhausen, DE) |
Correspondence
Address: |
Todd T. Taylor
Taylor & Aust, P.C.
142 S. Main Street
P.O. Box 560
Avilla
IN
46710
US
|
Family ID: |
7689189 |
Appl. No.: |
10/739424 |
Filed: |
December 13, 2003 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
10739424 |
Dec 13, 2003 |
|
|
|
PCT/EP02/06684 |
Jun 18, 2002 |
|
|
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Current U.S.
Class: |
162/352 |
Current CPC
Class: |
D21F 1/483 20130101 |
Class at
Publication: |
162/352 |
International
Class: |
D21G 009/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 22, 2001 |
DE |
101 30 323.8 |
Claims
What is claimed is:
1. A machine for the production of a fiber web including a wear
component for at least a partial surface of a friction body to
which a fiber medium is applied, said wear component comprising: a
beam part comprised of a metal selected from the group consisting
of high-grade steel, copper, nickel, aluminum, zinc, and an alloy
of the foregoing; an infeed area with an infeed angle .beta. for
the medium of less than 90.degree.; and at least one low-wear layer
on the friction body, said at least one low-wear layer being made
of a material from a class of self-fluxing alloys, said low-wear
layer being at least partially thermally re-melted.
2. The wear component of claim 1, further comprising an other beam
part comprised of plastic having at least one plate inserted
therein, said plate comprised of said selected metal.
3. The wear component of claim 1, wherein said infeed angle .beta.
is <45.degree..
4. The wear component of claim 1, wherein said self-fluxing alloys
include at least one of NiCrB, NiCrBSi, CoNiCrBSi and an additional
self-fluxing alloy.
5. The wear component of claim 4, wherein said low-wear layer
additionally includes at least one hard material added to said
self-fluxing alloy.
6. The wear component of claim 5, wherein said low-wear layer
additionally includes at least one of Fe, C and Mo.
7. The wear component of claim 4, wherein said at least one hard
material contains at least one of an oxide including at least one
of Al.sub.2O.sub.3, Cr.sub.2O.sub.3, ZrO.sub.2, SiO.sub.2 and
TiO.sub.2, a carbide including at least one of WC and TiC, a boride
including at least one of TiB.sub.2, Ti.sub.2B, ZrB, ZrB.sub.2 and
ZrB.sub.12, and a silicide.
8. The wear component of claim 1, wherein said low-wear layer
includes a re-melted layer having a thickness of from approximately
0.5 mm to approximately 2 mm.
9. The wear component of claim 8, wherein said thickness is from
approximately 0.75 mm to approximately 1.5 mm.
10. The wear component of claim 1, wherein said low-wear layer has
a porosity of from approximately 0% to approximately 10%
11. The wear component of claim 10, wherein said porosity is from
approximately 0.3% to approximately 5%.
12. The wear component of claim 1, wherein said low-wear layer has
a surface finish Ra from approximately 0.01 .mu.m to approximately
10 .mu.m.
13. The wear component of claim 12, wherein said surface finish Ra
is from approximately 0.01 .mu.m to approximately 1 .mu.m.
14. The wear component of claim 1, wherein said low-wear layer has
a surface finish Rz of from approximately 0.1 .mu.m to
approximately 10 .mu.m.
15. The wear component of claim 14, wherein said surface finish Rz
is from approximately 0.5 .mu.m to approximately 1 .mu.m.
16. The wear component of claim 1, wherein said low-wear layer has
a hardness HU 1.0 of from approximately 3,000 N/mm.sup.2 to
approximately 15,000 N/mm.sup.2.
17. The wear component of claim 16, wherein said hardness HU 1.0 is
from approximately 5,000 N/mm.sup.2 to approximately 10,000
N/mm.sup.2.
18. The wear component of claim 1, wherein said low-wear layer has
a hardness H plast of from approximately 5,000 N/mm.sup.2 to
approximately 30,000 N/mm.sup.2.
19. The wear component of claim 18, wherein said hardness H plast
is from approximately 5,500 N/mm.sup.2 to approximately 20,000
N/mm.sup.2.
20. The wear component of claim 1, wherein said low-wear layer has
a hardness HV 0.1 of from approximately 650 to approximately
5,000.
21. The wear component of claim 20, wherein said hardness HV 0.1 is
from approximately 700 to approximately 2,500.
22. The wear component of claim 1, wherein said low-wear layer has
a length expansion coefficient from 20.degree. C. to 250.degree.
C., of from approximately 8*10.sup.-6 K.sup.-1 to approximately
9*10.sup.-6 K.sup.-1.
23. The wear component of claim 1, wherein said low-wear layer is
additionally applied to at least one surface area which borders the
at least one partial surface, said at least one surface area
including said infeed area.
24. A procedure for the production of a wear component in a paper
machine, where on at least one partial surface of the wear
component a medium that causes wear is applied, the procedure
comprising the steps of: forming a beam part comprised of a metal
selected from the group of high-grade steel, copper, nickel,
aluminum, zinc, and an alloy of the foregoing; thermal spray
coating at least one low-wear layer onto the at least one partial
surface of the wear component, said low-wear layer made of a
material from a class of self-fluxing alloys; and thermally
re-melting at least a portion of said low-wear layer.
25. The procedure of claim 24, further comprising the step of
inserting a plate comprised of said selected metal into an other
beam part, said other beam part comprised of plastic.
26. The procedure of claim 24, wherein said material further
includes at least one hard material added during said thermal spray
coating step to said self-fluxing alloy for the creation of said
low-wear layer.
27. The procedure of claim 24, wherein said thermal spray coating
step comprises the step of high-speed flame spraying (HVOF), by one
of flame spraying, a plasma procedure and an autogenous procedure
to create said low-wear layer.
28. The procedure of claim 24, wherein said thermal re-melting step
is performed with at least one of at least one burner, at least one
laser beam, at least one arc, several high-power lamps, at least
one coalescence oven and at least one induction heater.
29. The procedure of claim 24, wherein said thermal spray coating
step applies said low-wear layer to surface areas which border the
at least one partial surface.
30. The procedure of claim 24, wherein said low-wear layer is
applied with a re-melted layer thickness of from approximately 0.5
mm to approximately 2 mm.
31. The procedure of claim 30, wherein said thickness is from
approximately 0.75 mm to approximately 1.5 mm.
32. The procedure of claim 24, further comprising the step of
forming a fibrous material suspension where machine clothing in the
form of one of a sieve and a felt is positioned proximate to the
wear component.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This is a continuation of PCT application No.
PCT/EP02/06684, entitled "FRICTION BODY OF LAMINATE CONSTRUCTION,
IN PARTICULAR FOR A PAPER OR CARDBOARD MACHINE, METHOD FOR
PRODUCTION AND USE THEREOF", filed Jun. 18, 2002.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the invention.
[0003] The invention pertains to a wear component in a laminar
structure, and, more particularly to a wear component, in a laminar
structure to which is applied, a fluid or a webbed material such as
machine clothing.
[0004] 2. Description of the related art.
[0005] Wear components in a laminar structure are used in
high-pressure pistons of fluid pumps with a liquid fluid, in
high-vacuum pumps with a gas or a mixture of gases, for precision
guidance in machine tools and production facilities or as a
drainage strip in paper or cardboard machines with the medium of a
webbed material in the form of machine clothing.
[0006] Well-known wear components in a paper or cardboard machine,
particularly a drainage strip, a deflector, a foil or a suction
strip have been produced, from a bonded system, created from
sintered ceramic materials and from plastic beams; or from
components with applied wear protection layers. The latter version
exhibiting a lower thickness as compared to the bonded system.
[0007] The bonded systems are generally produced from sintered
ceramic segments that are gummed together or gummed to at least one
beam part. The interconnection to the beam is often additionally
secured either mechanically or by an adhesive, the connection may
also be by way of at least one dovetail groove and, if necessary,
with additional screwed joints.
[0008] The ceramic materials that are used, are usually made out of
oxides, carbides or nitrides. Such as, the SiC, Si.sub.3N.sub.4,
Al.sub.2O.sub.3, ZrO.sub.2 material groups with various
stabilizers, MgO, Y.sub.2O.sub.3, rare-earth oxides or even
multiphase ceramic mixtures made from these compounds.
[0009] The status of the technology in the field of ceramic
material wear components in paper or cardboard machines is
described in detail in two German patent applications DE 33 06 457
A1 and DE 41 39 105 A1, open to public inspection, in PCT
applications WO 92/19565 A1 (=EP 0 588 803 A1), WO 97/10381 A1 and
WO 93/00473 A1 and in U.S. Pat. No. 3,393,124. Disadvantages of
these predominantly bonded systems result, exist in the usage of
comparably expensive, generally difficult to process, sintered
ceramic components of above-average expense, production consumption
and assembly technique. Additionally, when higher temperatures are
applied, as may happen during a dry run of a paper or cardboard
machine or due to strong temperature fluctuations, cracks or breaks
may be created. As a result, amplified wear takes place on the
opposite part, such as machine clothing. Chemical and/or
temperature influences lead to adhesive failure on the joints of
single ceramic elements, which leads to an increased wear of the
machine clothing, if not the destruction of the machine clothing.
Moreover, the part's design and the production of sintered ceramic
materials limit the free geometric form design of wear components,
particularly of drainage elements, such as drainage strips. In
addition, the production of infeed areas with infeed angles of
<60.degree. is not possible, due to the brittleness of ceramic
materials. Another disadvantage is the limited mechanical tolerance
to bending and impact stress, which is caused by the brittleness of
ceramic materials that leads to disruption of and increased wear of
the machine clothing, if not to the destruction of the machine
clothing.
[0010] Wear protection layers, such as wear reducing coatings
formed on substrates is used, which do not lead to any corrosion
due to its properties. The wear protection layers are frequently
applied by a thermal spray coating process, since this represents
an economical production method, which is not subdivided into
segments. According to well-known technique, which, for example, is
described in detail in PCT applications WO 96/05370 A1 and WO
96/24717 A1 and in U.S. Pat. Nos. 4,331,511; 3,446,702; 3,778,342;
3,352,749 and 3,351,524. These techniques utilitize coatings from
oxides, for example Al.sub.2O.sub.3, Cr.sub.2O.sub.3, ZrO.sub.2,
SiO.sub.2 or TiO.sub.2, carbides such as WC or TiC, Al- and/or
Zr-silicates, borides, for example TiB.sub.2, Ti.sub.2B, ZrB,
ZrB.sub.2 or ZrB.sub.12 or mixtures of the aforementioned materials
or material classes are used.
[0011] A well-known disadvantage of these components, having an
applied wear protection layer, is that the limited layer thickness
is a maximum 0.5 mm. This limitation is due to the lack of good
adhesion resulting from large residual stress within the layers and
since there is no mechanical and thermo physical compatibility with
the facilitated substrate. As a result the wear cannot be stopped,
just slowed. Due to this, the wear components in paper or cardboard
machines are inspected, depending on the field of operation, at
regular intervals. Another problem, not yet satisfactory resolved
at this point, is the porosity of thermally sprayed wear protection
layers, which leads to reduced life and increased wear on the
machine clothing in a paper or cardboard machine.
[0012] What is needed in the art is an extended life wear
protection area that resists wear from fluids and machine
clothing.
SUMMARY OF THE INVENTION
[0013] It is the first task of the invention to improve a wear
component in a laminar structure, so that it does not possess
well-known disadvantages of the current techniques. The present
invention has a higher mechanical capacity and allows for more
simple handling. Further, it does not contain any segment
structure, which results in low wear on the wear component itself
and on the medium, particularly at the machine clothing, which may
be in the form of a sieve or felt in a paper or cardboard machine.
The present invention allows for increased geometric freedom of
design and that it is more economical in terms of material
costs.
[0014] The second task of the invention is to provide a procedure
for the production of a wear component in a laminar structure,
which results in a high process certainty, a high production
efficiency, high throughput performance and low ongoing procedure
costs.
[0015] The first task, in accordance with an embodiment of the
present invention is resolved for the wear component in a laminar
structure in that the wear component in a laminar structure is
formed from one beam. The beam being made out of high-grade steel
and/or copper and/or nickel and/or pressure die-cast aluminum
and/or zinc, and/or at least from one of their alloys.
Alternatively, the beam may be made from a plastic beam with at
least one inserted plate made out of high-grade steel and/or copper
and/or nickel and/or aluminum and/or zinc and/or at least from one
of their alloys. The wear component in the laminar structure has an
infeed area with an infeed angle for a medium of <90.degree.,
preferably <45.degree.. At least one partial surface of the wear
component in the laminar structure that is subject to wear, has at
least one low-wear layer, made from a material of the class of the
self-fluxing alloys and that the low-wear layer was re-melted
thermally.
[0016] This wear component in a laminar structure, does not contain
any disadvantageous segment structures. Due to the thermal
re-melting process there is a diffusion connection between the beam
part (basic material) and the applied low-wear layer (wear
protection layer) with improved bonding strength in comparison to
other thermal spray layers. This provides a higher mechanical
capacity, allowing for simple handling and results in a reduced
wear on the medium, particularly to the machine clothing, which may
be in the form of a sieve or felt in a paper or cardboard machine.
Moreover, the geometric freedom of design provides for the
opportunity to realize, in the infeed area of the drainage elements
in a paper or cardboard machine, infeed angles of <60.degree.,
which results in improved drainage performance.
[0017] In order to further enhance the wear properties of the
low-wear layer and to further improve its life, there is at least
one hard material added to the self-fluxing alloy for the creation
of the low-wear layer. Based on production and cost criteria, the
low-wear layer is preferably made out of a self-fluxing alloy, such
as, NiCrB, NiCrBSi, CoNiCrBSi, mixtures of these alloys or another
self-fluxing alloy. The hard material, includes at least one oxide,
particularly Al.sub.2.sub.3, Cr.sub.2O.sub.3, ZrO.sub.2, SiO.sub.2
or TiO.sub.2 and/or a carbide, particularly WC or TiC, and/or a
boride, particularly TiB.sub.2, Ti.sub.2B, ZrB, ZrB.sub.2 or
ZrB.sub.12, and/or a silicide and/or a mixture of the
above-mentioned materials and material classes. Additionally,
elements such as Fe, C or Mo may be added to the low-wear
layer.
[0018] It is advantageous, if the low-wear layer has a re-melted
layer thickness ranging from 0.5 mm to 2 mm and preferably from
0.75 mm to 1.5 mm. The layer thickness is reasonable in terms of
cost and can be produced with a process that secures it to the beam
and corresponds with practical requirements. In order to keep the
wear properties of the medium, particularly with the machine
clothing, which may be in the form of a sieve or felt in a paper or
cardboard machine, as low as possible, the low-wear layer has a
porosity from 0% to 10%, preferably from 0.3% to 5%.
[0019] The wear properties of the wear component in the laminar
structure, in accordance with the present invention, are reduced or
minimized as much as possible. The low-wear layer has a surface
finish R.sub.a from 0.01 .mu.m to 10 .mu.m, preferably from 0.01
.mu.m to 1 .mu.m, a surface finish R.sub.z from 0.1 .mu.m to 10
.mu.m, preferably from 0.5 .mu.m to 1 .mu.m. The low-wear layer has
a hardness HU 1.0 from 3,006 N/mm.sup.2 to 15,000 N/mm.sup.2,
preferably from 5,000 N/mm.sup.2 to 10,000 N/mm.sup.2, a layer
hardness H plast from 5,000 N/mm.sup.2 to 30,000 N/mm.sup.2,
preferably from 5,500 N/mm.sup.2 to 20,000 N/mm.sup.2, and/or a
layer hardness HV 0.1 from 650 to 5,000, preferably from 700 to
2,500. These parameters provide a selection of wear reducing and
minimizing data and can be realized separately or in
combination.
[0020] In regards to the wear component in the laminar structure,
it is advantageous if its low-wear layer exhibits a length
expansion coefficient .alpha. from 20.degree. C. to 250.degree. C.,
of 8.multidot.10.sup.-6K.sup.-1 to 9.multidot.10.sup.-6K.sup.-1
since these parameters are sufficient for the thermal requirements
in the machines mentioned. Moreover, expansion coefficient .alpha.
lies between the corresponding parameters of steel and of ceramics,
such as Al.sub.2O.sub.3.
[0021] The firmness and the technical wear properties of the wear
component, in accordance with another embodiment of the present
invention, is further improved if the low-wear layer is applied to
the surface areas, which border a partial surface that is subject
to wear, particularly at the infeed area. Exemplarily, the complete
infeed area is coated including all areas associated with the
infeed angle and the drainage strip, in a paper or cardboard
machine.
[0022] The second task, in accordance with an embodiment of the
present invention, is resolved in a way such that the wear
component in a laminar structure is preferably created from a
single beam part, out of high-grade steel and/or copper and/or
nickel and/or pressure die-casting and/or aluminum and/or zinc
and/or at least one of their alloys. Alternatively, a plastic beam
may be utilized with at least one inserted plate made out of
high-grade steel and/or copper and/or nickel and/or aluminum and/or
zinc and/or at least one of their alloys, so that at least one
partial surface of the wear component in a laminar structure, that
is subject to wear, has at least one low-wear layer. The low-wear
layer being made from material of a self-fluxing alloys, which was
added by a thermal spray coating process and the low-wear layer is
thermally re-melted. By doing so, a high degree of process
certainty and runability is inherent with the present invention.
Moreover, the present invention lowers procedure costs and requires
a lower investment.
[0023] In order to further enhance the wear properties of the
low-wear layer and to improve its life, at least one hard material
is added to the self-fluxing alloy in order to create the low-wear
layer during the thermal spray coating process. Based on procedural
and economical criteria, the self-fluxing alloy is applied to the
wear component in a laminar structure by high-speed flame spraying
(HVOF), by flame spraying, by a plasma procedure or by an
autogenous procedure. The procedures result in high quality
properties of the created low-wear layer.
[0024] The thermal re-melting process is preferably performed by at
least one burner and/or with at least one laser beam and/or with at
least one arc and/or with several high-power lamps and/or with at
least one oven coalescence and/or with at least one induction
heater. These procedures and devices are each characterized by good
techniques as well as profitability.
[0025] The firmness and the technical wear properties of the wear
component, in accordance with the present invention, is further
improved if the low-wear layer is applied to the surface areas,
which border a partial surface that is subject to wear,
particularly at the infeed area. Exemplarily, the coating is
applied to the complete infeed area, including all areas associated
with the infeed angle and the drainage strip, in a paper or
cardboard machine.
[0026] It is advantageous if the low-wear layer has a re-melted
layer thickness from 0.5 mm to 2 mm, and preferably from 0.75 mm to
1.5 mm. The layer thickness is reasonable in terms of cost and can
be produced with a process that secures it to the beam and
corresponds with practical requirements.
[0027] In accordance with another embodiment of the present
invention, a procedure for the drainage and/or formation of a
fibrous material suspension is also proposed, where machine
clothing, particularly a sieve or felt of a paper or cardboard
machine, is present above a wear component in a laminar structure
which is in accordance with the invention.
[0028] It is clear that the features of the present invention,
named hereinabove and to be further explained, are applicable not
only in their mentioned combinations but in other combinations,
too, as well as in single usage which is still the subject of this
invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0029] The above-mentioned and other features and advantages of
this invention, and the manner of attaining them, will become more
apparent and the invention will be better understood by reference
to the following description of embodiments of the invention taken
in conjunction with the accompanying drawings, wherein:
[0030] FIG. 1 illustrates a cross-sectional side view of a first
wear component in a laminar structure in accordance with one
embodiment the present invention;
[0031] FIG. 2 illustrates a cross-sectional side view of another
wear component in a laminar structure in accordance with an
embodiment of the present invention;
[0032] FIG. 3 illustrates a micrograph of the wear components in a
laminar structure in accordance with the present invention; and
[0033] FIG. 4 illustrates a micrograph of the wear components in a
laminar structure in accordance with the present invention.
[0034] Corresponding reference characters indicate corresponding
parts throughout the several views. The exemplifications set out
herein illustrate one preferred embodiment of the invention, in one
form, and such exemplifications are not to be construed as limiting
the scope of the invention in any manner.
DETAILED DESCRIPTION OF THE INVENTION
[0035] Referring now to the drawings and more particularly to FIG.
1 there is a side view of a first wear component 1 in a laminar
structure in accordance with the invention. Wear component 1 in a
laminar structure is represented by a drainage strip 2 of a paper
or cardboard machine (not displayed). In this machine there is at
least one partial surface 3, which is subject to wear caused by
machine clothing 4, such as medium 4.1 in the form of a sieve 5.
Wear component 1 is formed from one beam part 6 out of high-grade
steel 6.1 and/or copper and/or nickel and/or pressure die-casting
and/or aluminum and/or zinc and/or at least from one of their
alloys. Wear component 1 has an infeed area 7 with an infeed angle
B for machine clothing 4 and medium 4.1, collectively referred to
as fiber medium, of <90.degree., preferably <45.degree.. At
least one partial surface 3 of wear component 1 that is subject to
wear, has at least one low-wear layer 9, made from a material of at
least one of self-fluxing alloys 8 and low-wear layer 9 is
thermally re-melted. The re-melting process results in the
metallurgical bonding of the layers.
[0036] It is advantageous if low-wear layer 9 contains either
NiCrB, NiCrBSi, CoNiCrBSi or at least one additional self-fluxing
alloy 8 and provides a re-melted layer thickness A from 0.5 mm to 2
mm, and preferably from 0.75 mm to 1.5 mm and a porosity P of 0% to
10%, and preferably from 0.3% to 5%. Additional elements, such as
Fe, C or Mo, may be added to low-wear layer 9.
[0037] In addition, low-wear layer 9 has a surface finish R.sub.a
from 0.01 .mu.m to 10 .mu.m, preferably from 0.01 .mu.m to 1 .mu.m,
a surface finish R.sub.z from 0.1 .mu.m to 10 .mu.m, preferably
from 0.5 .mu.m to 10 .mu.m. Low-wear layer 9 has a hardness HU 1.0
of from 3,000 N/mm.sup.2 to 15,000 N/mm.sup.2, preferably from
5,000 N/mm.sup.2 to 10,000 N/mm.sup.2, a layer hardness H plast of
from 5,000 N/mm.sup.2 to 30,000 N/mm.sup.2, preferably from 5,500
N/mm.sup.2 to 20,000 N/mm.sup.2, and/or a layer hardness HV 0.1 of
from 650 to 5,000, preferably from 700 to 2,500. Low-wear layer 9
has a length expansion coefficient a from 20.degree. C. to
250.degree. C., of 8.multidot.10.sup.-6K.sup.1 to
9.multidot.10.sup.-6K.sup.-1. Low-wear layer 9 has at least one
hard material 10 added to self-fluxing alloy 8, which contains at
least one oxide, particularly from Al.sub.2O.sub.3,
Cr.sub.2O.sub.3, ZrO.sub.2, SiO.sub.2 or TiO.sub.2 and/or carbides,
such as WC or TiC, and/or boride, particularly from TiB.sub.2,
Ti.sub.2B, ZrB, ZrB.sub.2 or ZrB.sub.12 and/or a silicide and/or
mixtures of these materials or material classes.
[0038] Now, additionally referring to FIG. 2, there is shown a side
view of another embodiment of wear component 1 in accordance with
the present invention in a laminar structure, similar to FIG. 1.
According to this embodiment of the invention, wear component 1 is
preferably formed from one beam part 6 made out of plastic beam 6.2
with at least one inserted plate 6.3 made out of high-grade steel
6.1 and/or copper and/or nickel and/or pressure die-casting and/or
aluminum and/or zinc and/or from at least one of their alloys.
Low-wear layer 9 is also applied to surface areas 3.1, which
borders partial surface 3 that is subject to wear, particularly at
infeed area 7.
[0039] Now, additionally referring to FIGS. 3 and 4, there is shown
two micrographs of wear component 1 in a laminar structure in
accordance with the invention at two different magnification
scales. Low-wear layer 9 contains NiCrBSi.
[0040] A procedure in accordance with the present invention results
in the production of wear components with a laminar structure. The
present invention creates a wear component with a laminar structure
in accordance with the procedures that are described herein, which
has a higher mechanical capacity and allows for more simple
handling than the prior art. The present invention does not contain
any segment structure, which results in a low wear tolerance on the
wear component itself and on the medium, particularly on the
machine clothing, which is in the form of a sieve or the felt in a
paper or cardboard machine; and that it allows for increased
geometric freedom of design and is more economical in terms of
material costs.
[0041] While this invention has been described as having a
preferred design, the present invention can be further modified
within the spirit and scope of this disclosure. This application is
therefore intended to cover any variations, uses, or adaptations of
the invention using its general principles. Further, this
application is intended to cover such departures from the present
disclosure as come within known or customary practice in the art to
which this invention pertains and which fall within the limits of
the appended claims.
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