DE102006024373A1 - Wire section of a machine for the production and / or treatment of a fibrous web - Google Patents

Abstract

The invention relates to a wire section (1) of a machine for producing and / or treating a fibrous web, in particular paper or board web, the at least one roller (2), in particular Formierwalze or Siebsaugwalze, and at least one over a partial circumferential region of the roller (2) guided Sieve (4), wherein the roller (2) has a roller shell (3) with a plurality of radial openings (5) and wherein the roller shell (3) with one of in the radius direction (Z) of the roll shell (3) of the roller (3) 2) standing upright bands (7, 7.1, 7.2) composite support structure (6) is wrapped. The wire section (1) according to the invention is characterized in that the tapes (7, 7.1, 7.2) are provided with a thermal spray coating (at least in their outermost radial region (10) in which they at least temporarily contact the sieve (4). 11) are provided, which the sieve (4) facing radii (R)> = 0.05 mm, preferably> = 0.1 mm, in particular> = 0.3 mm.

Description

The The invention relates to a wire section of a machine for manufacturing and / or treatment of a fibrous web, in particular paper or Cardboard web, the at least one roller, in particular forming roller or Siebsaugwalze, and at least one over a partial circumferential area the roller led Sieve, wherein the roller has a roll shell with a plurality of radial openings and wherein the roll shell with an out in the radius direction the roll mantle of the roll upright bands composite support structure wrapped is.

Such a wire section is for example from the German patent application DE 32 10 320 A1 known. The support structure is formed of straight, at least approximately in the circumferential direction of the roll shell of the roller and upstanding in the radius direction of the roll shell of the roll standing first bands formed by corrugated in the circumferential direction of the roll shell of the roll and also in the radius direction of the roll shell of the roll upright second bands connected to each other. Thus, a support structure in the form of a honeycomb structure with a plurality of honeycombs. In this case, this honeycomb structure forms a honeycomb honeycomb cover in such a way that cable connections exist between the honeycombs belonging to a honeycomb group, the boundaries between adjacent honeycomb groups being free from such honeycomb connections. In this case, a significant reduction in the noise generated during operation of the wire section is achieved in a favorable manner.

The revealed sieve section, however, has the serious disadvantage that they are for most graphic paper types can not be operated, otherwise clear marks visible in the fibrous web become. Furthermore, it has a higher than average wear both the honeycomb structure as well as the guided sieve on.

Around to avoid these disadvantages of the disclosed wire section as far as possible In the past, the roller was provided with a shrink-screen cover. In addition, favorable the shrink screen cover the equalization of the water outflow from the fibrous web in the roller of the wire section with additional Avoidance of hole shadow marks in the fibrous web.

A such a roll for a wire section is for example in the German patent application DE-OS 21 48 361.

In spite of a variety of benefits also brings the use of a shrink screen cover on a roller a number of disadvantages. These disadvantages include, for example the frequent roll change required as a result of shrink screen wear (usually all three at nine months), unplanned downtime due of shrinkage screen damage and restrictions in terms of the use of certain cleaning agents. So damaging to For example, lyse the polyester material of the shrink-wrap cover. moreover in most cases a high pressure spray tube needed. Since the roller is provided with a stocking, the use is a scraper not possible.

In the recent past, rollers have been described, for example in international application WO 99/32713 A1 or in the German Offenlegungsschrift DE 100 26 542 A1 on which a regular basic drill pattern is applied. This basic drilling pattern, also referred to as a first group or primary pattern, usually consists of holes drilled through the roll shell, which are countersunk on the outside of the roll. If necessary, the primary pattern can also be overlaid by other patterns, such as a secondary pattern.

Of the serious disadvantage of using such a roller with at least However, one pattern is that increased wear both on the roller as well as on the screen due to a reduction of the wings in Appearance occurs. reinforced This wear will be particular sharp edges around the wings or raised nubs in the area of the wings. It Although it has already been tried, existing burrs and the like by conventional brushing to eliminate the problem of increased screen wear could but not satisfactorily resolved.

It So is a first object of the invention, a wire section of the beginning so-called type such that an expanded range at paper types at elevated Machine speeds and reduced wear on all involved agents can be produced.

Farther It is a second object of the invention to provide a process for the preparation a roller for the wire section of the invention specify.

The The first object is achieved according to the invention solved, that the ribbons at least in its utmost Radial region in which they at least temporarily with the sieve contact, provided with a thermal spray coating are those which the sieve facing radii ≥ 0.05 mm, preferably ≥ 0.1 mm, in particular ≥ 0.3 mm.

The according to the invention first Task is completely solved in this way.

The Provide the roller with at least in its outermost radial region a thermal spray coating provides a significant reduction of wear on all involved means, such as the roller itself and about her out Scree. In addition, the attachment of said radii affects the the sieve facing outermost radial region of the roll continues to reduce the wear, because on the one hand the possible Wear surfaces on the roller cheaper are formed and on the other hand, the sieve no longer over sharp, promoting wear surfaces led the roller is. Furthermore, the invention has an extremely positive effect, especially at high sieve stresses, for example ≥ 5 kN / m, preferably ≥ 6 kN / m, in particular ≥ 8 kN / m out, because here the contact pressure of the sieve on the bands of Roller is particularly high, thus theoretically, the Siebverschleiß increases.

The inventive training the wire section, in particular the roller, creates the best conditions for the Production of both insensitive paper grades and of sensitive paper types while avoiding marks in the Fibrous web. In general, higher machine speeds can be achieved drive and improved runnability, among other things due to less Roll change and time-reduced downtime reach.

In two preferred practical embodiments it is provided that the roll shell of the roll is provided with straight, at least approximately in the circumferential direction of the roll shell of the roll extending and upright in the radius direction of the roll shell of the roll first bands, which is corrugated by in the circumferential direction of the roll shell of the roll and also in the radius direction of the roll shell of the roll upright second belts are connected to each other, or that the roll shell of the roll is provided with shaped, at least approximately in the circumferential direction of the roll shell of the roll extending and upstanding in the radius direction of the roll shell of the roll first bands. In both embodiments, the support structure thus consists of a honeycomb structure with a plurality of honeycombs. The first embodiment is for example from the already mentioned German Offenlegungsschrift DE 32 10 320 A1 whereas the second embodiment is known, for example, from the European patent application EP 0 462 434 A1 is known.

Performed experiments have shown that only the thermal spraying suitable for the production of the roller with its radii. Other methods such as the vacuum process, namely CVD (Chemical Vapor Deposition) or PVD (Physical Vapor Deposition) for application of coating material, such as TiN, TiBN, TiAlN, CrN, CrBN or NbN, are not suitable for the production mentioned, because in their use no edge rounding with the above radii too are expected.

The thermal spray coating preferably consists of a coating material applied by thermal spraying, which comprises at least oxide-ceramic materials, carbide-based materials or self-fluxing alloys. When using this coating material, a coating hardness of the thermal spray coating in the range of 3,000 to 15,000 N / mm ² , preferably from 5,000 to 10,000 N / mm ² , can be produced.

The oxide-ceramic materials may preferably be Cr ₂ O ₃ , TiO ₃ , Al ₂ O ₃ or mixtures thereof, the carbide-based materials WC / Co, WC / Co / Cr, or Cr ₃ C ₂ / NiCr and the self-fluxing alloys NiCrBSi. Their use excellently favors the generation of edge fillets with the above radii.

Further For example, the thermal spray coating preferably has a coating thickness in the range of 0.5 to 2 mm, preferably 0.75 to 1.5 mm. This thickness range is cost-acceptable and to produce reliably and meets the requirements in the Practice more than necessary.

In further preferred embodiments, adjacent honeycombs are connected to one another in the circumferential direction and / or in the axial direction of the roll shell of the roll by at least one opening, wherein the respective opening is arranged in the outermost radial region. In this case, the opening is preferably open towards the outer radial area, whereby a recess is formed in the band. This embodiment is particularly suitable for label-sensitive paper grades, since thus no regular marking structure in the fibrous web is visible. However, the structure must be designed so that, despite broken strips still enough guide surface for the sieve is available, so that the sieve is still safely performed without excessive wear. For this purpose, the individual honeycomb can be designed so that as possible no continuous guide surface between two adjacent honeycomb remains. It makes sense that the recesses are designed and arranged so that adjacent honeycombs have partially deviating arrangements and dimensions of these recesses. So, above all, the visual impression of a regularity of Openings are avoided.

in the With regard to an efficient avoidance of tube formation and an increase the life of the screen point in the circumferential direction of the roll shell the roller adjacent second bands without adjacent recess a distance ≤ 40 mm, preferably ≤ 30 mm.

The arranged on the roll shell bands are preferably made Steel, preferably of stainless steel, of aluminum, from an alloy, in particular brass, or a plastic, in particular a CFRP or GFRP. These materials provide the Advantage of a far-reaching insensitivity to other, in the wire section used and accumulating substances with sufficient mechanical strength for the conventional one Operation of the wire section.

In order to a good and balanced area guide the sieve is given, are in the axial direction of the roll shell of Roller adjacent honeycomb in the circumferential direction of the roll shell of the roll preferably arranged offset to one another.

The second object is achieved in that the on the a plurality of radial openings having roll shell attached ribbons at least in its utmost Radial region in which they at least temporarily with the sieve contact by thermal spraying with a thermal Spray coating, the radii facing the sieve ≥ 0.05 mm, preferably ≥ 0.1 mm, in particular ≥ 0.3 mm, has.

The second invention Task is completely solved in this way, with the already mentioned advantages of the invention result.

In preferred embodiment For thermal spraying, high-speed flame spraying is used or an atmospheric one Plasma process used since both coating methods the best meet the requirements placed on them. Of course, still can Other other coating methods find their use, the used coating process significantly from the coating material used is determined.

Farther For thermal spraying, a coating material is preferred used, which at least oxide ceramic materials, carbide-based Materials or self-fluxing Includes alloys. Their use favors in exquisite Make the generation of edge fillets with the above radii.

The bands become ideally at least prior to thermal spraying aftertreated, in particular by breaking and / or deburring sharp Edges and / or brushes and / or sandblasting. This will result in optimal preparation the removal of sharp edges, burrs and the like for subsequent coating the least extreme created radial areas of the roller.

Also can the bands before the production of the support structure be provided with the corresponding recesses, for example by means of a laser.

In order to better adhesion later applied coating is achieved, it is in the first embodiment advantageous if the bands by brushing, especially by brushing nylon brushes containing abrasives, so post-treated, that they are at least in their utmost Radial region in which they at least temporarily with the sieve contact, a radius ≥ 0.05 mm, preferably ≥ 0.1 mm, in particular ≥ 0.3 mm, received.

In Second embodiment, it may be advantageous if the bands before their attachment to the roll shell of the roll so with a Be provided coating that they at least in their utmost Radial region in which they at least temporarily with the sieve contact, a radius ≥ 0.05 mm, preferably ≥ 0.1 mm, in particular ≥ 0.3 mm, received.

The Roller of the wire section according to the invention a machine for producing and / or treating a fibrous web, especially paper or board web, is suitable in excellent Also for use in a conversion of a wire section. there can the Siebschrumpfbezug a previously used roller removed be formed and the emerging bands according to the invention become. The recesses in the bands can, for example, by means a laser or by grinding introduced into the support structure become. Furthermore, the support structure at least in its utmost Radial region in which they at least temporarily with the sieve contact, provided with a thermal spray coating be, the sieve-facing radii ≥ 0.05 mm, preferably ≥ 0.1 mm, in particular ≥ 0.3 mm. This allows in particular the cost of the rebuilt wire section and the time needed for the production of components for the rebuilt wire section significantly lower.

In addition, components and assemblies that interacted with the roller before the conversion of the wire section, ver without major problems again ver be used.

Further Features and advantages of the invention will become apparent from the following Description of preferred embodiments with reference to the drawing.

It demonstrate

1 a partial development of the wings of a first embodiment of a roller of a wire section;

2 FIG. 3 is a sectional view of the roller according to the section line AA of FIG 1 ;

3 a partial development of the wings of a second embodiment of a roller of a wire section;

4 FIG. 2 is a sectional view of the roller according to the section line BB of FIG 3 ; and

5 : An exemplary application of the roller in a wire section according to the invention of a machine for producing a fibrous web.

The 1 shows a partial development of the wings of a first embodiment of a roll shell 3 having roller 2 a non-illustrated, the expert but well-known wire section 1 ,

The roller 2 For example, a forming roll or wire suction roll of a machine for producing a fibrous web and used for the production and / or treatment of the fibrous web, such as a paper or board web. The wire section 1 further comprises at least one sieve, not shown 4 which extends over a partial circumferential area of the roller 2 is guided. At the sieve 4 it can be a fine and multi-layer plastic sieve, for example of the SSB type with a sieve thickness ≤ 0.6 mm. The denier (yarn count, yarn count) of a screen thread can have a value in the range from 50 to 120 dtex, preferably from 60 to 90 dtex.

The roll jacket 3 the roller 2 has a plurality of radial openings 5 on and is with an out in the radius direction Z (arrow) of the roll shell 3 the roller 2 upright bands 7 composite support structure 6 envelops.

In the execution of 1 is the roll shell 3 the roller 2 with straight, at least approximately in the circumferential direction Y (arrow) of the roll shell 3 the roller 2 extending and in the radius direction Z (arrow) of the roll shell 3 the roller 2 upright first bands 7.1 Mistake. The radial openings 5 For the sake of clarity, they are only shown as a selection.

The first tapes 7.1 are by in the circumferential direction Y (arrow) of the roll shell 3 the roller 2 corrugated and also in the radius direction Z (arrow) of the roll shell 3 the roller 2 upstanding second bands 7.2 connected together, so as a supporting structure 6 a honeycomb structure 8th with a variety of honeycombs 9 arises. The curl of the second bands 7.2 may for example have an illustrated trapezoidal basic shape. Furthermore, the compounds of the two bands 7.1 . 7.2 executed by known point and / or seam welds.

Alternatively, but not explicitly shown, the roll shell 3 the roller 2 also with shaped, at least approximately in the circumferential direction Y (arrow) of the roll shell 3 the roller 2 extending and in the radius direction Z of the roll shell 3 the roller 2 be provided edgewise standing first bands, so that the support structure in turn consists of at least the top side of a honeycomb structure with a plurality of honeycombs due to the formation of the first bands. This type of support structure is, as already stated, for example, from the European patent application EP 0 462 434 A1 known.

The 2 shows a sectional view of the roller 2 according to the section line AA of 1 ,

That on the roll jacket 3 arranged and cut second band 7.2 is at least in its outermost radial area 10 in which it at least temporarily with the screen shown 4 comes in contact with a thermal spray coating 11 provided to the sieve 4 facing radii R ≥ 0.05 mm, preferably ≥ 0.1 mm, in particular ≥ 0.3 mm. The cut second volume 7.2 is exemplary for the other bands 7.1 . 7.2 all of which have the respective radius R ≥ 0.05 mm, preferably ≥ 0.1 mm, in particular ≥ 0.3 mm, of steel, preferably a stainless steel, of aluminum, of an alloy, in particular brass, or a plastic, in particular a CFK or GRP, and have a sheet thickness B ≤ 2 mm, preferably ≤ 1.5 mm, in particular ≤ 1.0 mm, have.

The thermal spray coating 11 consists of a coating material 12 which comprises at least oxide-ceramic materials, carbide-based materials or self-fluxing alloys. The oxide-ceramic materials may preferably be Cr ₂ O ₃ , TiO ₃ , Al ₂ O ₃ or mixtures thereof, the carbide-based materials WC / Co, WC / Co / Cr, or Cr ₃ C ₂ / NiCr and the self-fluxing alloys NiCrBSi.

Furthermore, the thermal spray coating 11 a coating thickness D in the range from 0.5 to 2 mm, preferably from 0.75 to 1.5 mm, and a coating hardness HU 1.0 in the range from 3,000 to 15,000 N / mm ² , preferably from 5,000 to 10,000 N / mm ² , on.

The thermal spray coating 11 can in principle be smaller, the same or, as in the 2 shown larger than the cross section of the second band 7.2 be. Depending on the design, this results in a shelter, a tie or a supernatant Ü shown.

The 3 shows a partial development of the wings of a second embodiment of a roll shell 3 having roller 2 a non-illustrated, the expert but well-known wire section 1 , The wire section 1 comprises in a known manner at least one sieve, not shown 4 which extends over a partial circumferential area of the roller 2 is guided.

Because the roller 2 similar to the one in the 1 illustrated roller 2 is constructed, will refer to their description at this point.

Unlike the one in the 1 illustrated roller 2 are all in the circumferential direction Y (arrow) of the roll shell 3 the roller 2 neighboring honeycomb 9 the present roller 2 over at least one opening 13 connected to each other, with the respective opening 13 in the second volume 7.2 in the outermost radial area 10 is arranged. Only examples are some openings 13 cited.

Furthermore, in the present embodiment, in the axial direction X (arrow) of the roll mantle 3 the roller 2 neighboring honeycombs 9 majority over at least one opening 14 connected to each other, with the respective opening 14 in the first volume 7.1 again in the outermost radial area 10 is arranged. Some openings 14 are in turn only shown in a selection.

The 4 shows a sectional view of the roller 2 according to the section line BB of 3 ,

The opening 13 is to the outer radial area 10 directed open, creating a recess 15 in the second volume 7.2 arises. Furthermore, in the circumferential direction Y (arrow) of the roll shell 3 the roller 2 adjacent second bands 7.2 without adjacent recess a distance L ≤ 40 mm, preferably ≤ 30 mm (cf. 3 ).

For the expert, it goes without saying that even in the first volume 7.1 attached opening 14 can be provided with a recess, as in the 4 as a recess 15 for those in the second volume 7.2 attached opening 13 is shown. The recess 15 may in principle have any polygonal contour, such as a semicircle shown, a circle segment, a triangle, a quadrilateral or the like.

That on the roll jacket 3 arranged and cut second band 7.2 is again at least in its outermost radial region 10 in which it at least temporarily with the screen shown 4 comes in contact with a thermal spray coating 11 provided to the sieve 4 facing radii R ≥ 0.05 mm, preferably ≥ 0.1 mm, in particular ≥ 0.3 mm. The same applies of course to the roll shell 3 arranged first volume 7.1 ,

The in the 1 to 4 illustrated embodiments of the roller 2 Of course, they can also be combined with each other, so that ultimately a roller 2 can arise with all possible execution properties.

Thus, also in the axial direction X (arrow) of the roll shell 3 the roller 2 neighboring honeycombs 9 in the circumferential direction Y (arrow) of the roll shell 3 the roller 2 be arranged offset to each other, as in the 1 and 3 is merely indicated.

The in the 1 to 4 illustrated embodiments of the roller 2 can be prepared using the method according to the invention.

So the ones on the a lot of radial openings 5 having roll shell 3 attached ribbons 7.1 . 7.2 at least in its outermost radial area 10 in which they at least temporarily with the sieve 4 contact by thermal spraying with a thermal spray coating 11 provided to the sieve 4 facing radii R ≥ 0.05 mm, preferably ≥ 0.1 mm, in particular ≥ 0.3 mm.

To the Thermal spraying will be a high velocity flame spraying or an atmospheric one Plasma method and a coating material, which at least oxide ceramic materials, carbide-based materials or self-fluxing alloys includes, used.

The bands 7.1 . 7.2 are at least aftertreated before the thermal spraying, in particular by breaking and / or deburring sharp edges and / or brushing and / or sandblasting. When brushing, especially when brushing with abrasive containing nylon brushes, the bands 7.1 . 7.2 so aftertreated that they too at least in its outermost radial area 10 in which they at least temporarily with the sieve 4 come in contact, a radius R ≥ 0.05 mm, preferably ≥ 0.1 mm, in particular ≥ 0.3 mm, obtained.

Alternatively or additionally, the bands 7.1 . 7.2 before being mounted on the roll shell 3 the roller 2 provided with a coating such that it at least in its outermost radial region 10 in which they at least temporarily with the sieve 4 come in contact, a radius R ≥ 0.05 mm, preferably ≥ 0.1 mm, in particular ≥ 0.3 mm, obtained.

The 5 shows an exemplary application of the roller 2 in a wire section according to the invention 1 a machine for producing a fibrous web.

Such a wire section 1 is for example from the German patent application DE 101 06 731 A1 known. It has at least one essentially vertical twin-wire section S, in whose initial area SA a forming roller 16 and / or in the deflection region SU and / or end region SE a Siebsaugwalze 17 is arranged. At least one of the two rollers 16 . 17 is here as a roller described above 2 executed.

The twin-wire section S of the wire section 1 may of course also at an angle to the horizontal obliquely up or down or it may also be horizontal or approximately horizontal. The 5 So represents only an exemplary course of Doppelsiebstrecke S.

The roller 2 the wire section according to the invention 1 a machine for the production and / or treatment of a fibrous web, in particular paper or board web, is, as already stated, in an excellent manner also for use in a conversion of a wire section.

In summary It should be noted that the invention provides an improved wire section of the type mentioned is created by means of which an extended Range of paper types at elevated Machine speeds and reduced wear on all involved agents can be produced.

1

Wire section

2

roller

3

roll shell

4

scree

5

opening

6

support structure

7.1

first tape

7.2

second tape

8th

honeycomb structure

9

honeycomb

10

outermost radial area

11

thermal spray coating

12

coating material

13

opening

14

opening

15

recess

16

forming roll

17

Suction roll

A

distance

A-A

intersection

B

sheet thickness

B-B

intersection

D

coating thickness

HU 1.0

coating hardness

R

radius

S

twin-wire

S.A.

initial region

S. E

end

S.U

deflection

Ü

Got over

X

axially (Arrow)

Y

circumferentially (Arrow)

Z

radius direction (Arrow)

Claims (19)

Wire section ( 1 ) a machine for the production and / or treatment of a fibrous web, in particular paper or board web, the at least one roller ( 2 ), in particular forming roll or wire suction roll, and at least one over a partial circumferential area of the roll ( 2 ) guided sieve ( 4 ), wherein the roller ( 2 ) a roll shell ( 3 ) with a plurality of radial openings ( 5 ) and wherein the roll shell ( 3 ) with an out in the radius direction (Z) of the roll shell ( 3 ) of the roller ( 2 ) upright bands ( 7 . 7.1 . 7.2 ) composite support structure ( 6 ), characterized in that the bands ( 7 . 7.1 . 7.2 ) at least in its outermost radial region ( 10 ), in which they at least temporarily with the sieve ( 4 ) with a thermal spray coating ( 11 ) provided to the sieve ( 4 ) facing radii (R) ≥ 0.05 mm, preferably ≥ 0.1 mm, in particular ≥ 0.3 mm. Wire section ( 1 ) according to claim 1, characterized in that the roll shell ( 3 ) of the roller ( 2 ) with straight, at least approximately in the circumferential direction (Y) of the roll shell ( 3 ) of the roller ( 2 ) and in the radius direction (Z) of the roll mantle ( 3 ) of the roller ( 2 ) upright first bands ( 7.1 ) provided by in the circumferential direction (Y) of the roll shell (Y) ( 3 ) of the roller ( 2 ) corrugated and also in the radius direction (Z) of the roll shell ( 3 ) of the roller ( 2 ) upstanding second band of the ( 7.2 ) are interconnected so that the support structure ( 6 ) of a honeycomb structure ( 8th ) with a plurality of honeycombs ( 9 ) consists. Wire section ( 1 ) according to claim 1, characterized in that the roll shell ( 3 ) of the roller ( 2 ) with molded, at least approximately in the circumferential direction (Y) of the roll shell ( 3 ) of the roller ( 2 ) and in the radius direction (Z) of the roll mantle ( 3 ) of the roller ( 2 ) upright first bands ( 7.1 ), so that the support structure ( 6 ) at least on the upper side of a honeycomb structure ( 8th ) with a plurality of honeycombs ( 9 ) consists. Wire section ( 1 ) according to claim 1, 2 or 3, characterized in that the thermal spray coating ( 11 ) from a coating material ( 12 ), which comprises at least oxide-ceramic materials, carbide-based materials or self-fluxing alloys. Wire section ( 1 ) according to one of the preceding claims, characterized in that the thermal spray coating ( 11 ) has a coating thickness (D) in the range of 0.5 to 2 mm, preferably 0.75 to 1.5 mm. Wire section ( 1 ) according to one of the preceding claims, characterized in that the thermal spray coating ( 11 ) has a coating hardness (HU 1.0) in the range of 3,000 to 15,000 N / mm ² , preferably 5,000 to 10,000 N / mm ² . Wire section ( 1 ) according to one of the preceding claims, characterized in that in the circumferential direction (Y) of the roll shell ( 3 ) of the roller ( 2 ) adjacent honeycombs ( 9 ) via at least one opening ( 13 . 15 ), wherein the respective opening ( 13 . 15 ) in the outermost radial region ( 10 ) is arranged. Wire section ( 1 ) according to one of the preceding claims, characterized in that in the axial direction (X) of the roll shell ( 3 ) of the roller ( 2 ) adjacent honeycombs ( 9 ) by at least one opening ( 14 . 15 ), wherein the respective opening ( 14 . 15 ) in the outermost radial region ( 10 ) is arranged. Wire section ( 1 ) according to claim 7 or 8, characterized in that the opening ( 13 . 14 ) to the outer radial region ( 19 ) is opened, whereby a recess ( 15 ) arises in the band (7.1, 7.2). Wire section ( 1 ) according to claim 9, characterized in that in the circumferential direction (Y) of the roll shell ( 3 ) of the roller ( 2 ) adjacent second bands ( 7.2 ) without adjacent recess have a distance (L) ≤ 40 mm, preferably ≤ 30 mm. Wire section ( 1 ) according to one of the preceding claims, characterized in that the bands ( 7 . 7.1 . 7.2 ) made of steel, preferably a stainless steel, of aluminum, of an alloy, in particular brass, or a plastic, in particular a CFK or GFK exist. Wire section ( 1 ) according to one of the preceding claims, characterized in that in the axial direction (X) of the roll shell ( 3 ) of the roller ( 2 ) adjacent honeycombs ( 9 ) in the circumferential direction (Y) of the roll shell ( 3 ) of the roller ( 2 ) are arranged offset from each other. Process for producing a roll ( 2 ), in particular forming roll or wire suction roll, for use in a wire section ( 1 ) according to claim 1, characterized in that on the a plurality of radial openings () having roll shell ( 3 ) attached bands ( 7 . 7.1 . 7.2 ) at least in its outermost radial region ( 10 ), in which they at least temporarily with the sieve ( 4 ) by thermal spraying with a thermal spray coating ( 11 ) provided to the sieve ( 4 ) facing radii (R) ≥ 0.05 mm, preferably ≥ 0.1 mm, in particular ≥ 0.3 mm. Method according to claim 13, characterized in that that for thermal spraying a high velocity flame spraying or an atmospheric one Plasma method is used. A method according to claim 13 or 14, characterized in that for thermal spraying a coating material ( 12 ), which comprises at least oxide-ceramic materials, carbide-based materials or self-fluxing alloys Method according to claim 13, 14 or 15, characterized in that the bands ( 7 . 7.1 . 7.2 ) are at least aftertreated before the thermal spraying, in particular by breaking and / or deburring sharp edges and / or brushing and / or sandblasting. Method according to claim 16, characterized in that the bands ( 7 . 7.1 . 7.2 ) by brushing, in particular by brushing with nylon brushes containing abrasives, such that they are at least in their outermost radial region ( 10 ), in which they at least temporarily with the sieve ( 4 ), a radius ≥ 0.05 mm, preferably ≥ 0.1 mm, in particular ≥ 0.3 mm, is obtained. Method according to claim 13, 14 or 15, characterized in that the bands ( 7 . 7.1 . 7.2 ) before being mounted on the roll shell ( 3 ) of the roller ( 2 ) are provided with a coating such that they are at least in their outermost radial region ( 10 ), in which they at least temporarily with the sieve ( 4 ), a radius (R) of 0.05 mm, preferably ≥ 0.1 mm, in particular ≥ 0.3 mm, is obtained. Use of a roller ( 2 ) according to one of claims 1 to 12 in a conversion of a wire section ( 1 ).