WITELS-ALBERT GmbH

Postfach 480229, 12252 Berlin
Malteserstr. 151-159, 12277 Berlin
Germany
Telephone +49 30 7239880
Fax +49 30 72398888
info@witels-albert.com

Hall map

wire 2018 hall map (Hall 9): stand E39

Fairground map

wire 2018 fairground map: Hall 9

Contact

Marcus Paech

Malteserstraße 151-159
12277 Berlin, Germany

Phone
+49 30 723 988 0

Email
paech@witels-albert.com

Horst Schneidereit

Malteserstraße 151-159
12277 Berllin, Germany

Phone
+49 30 723 988 0

Email
info@witels-albert.com

Bob Flower

208 East Pier Street, Unit B
Oxford, MD 21654, USA

Phone
+1 410 228 8383

Email
info@witels-albert-usa.com

Mirko Schilling

Malteserstraße 151-159
12277 Berlin, Deutschland

Phone
+49 30 723 988 16

Email
schilling@witels-albert.com

Our range of products

Product categories

Our products

Product category: Straightening

Guiding up to 5 and 10 mm

Roller guides of the RK and RK VE series have been part of the product range of the WITELS-ALBERT GmbH for decades.

The robust designs are used to stabilize the path of process materials in a defined horizontal and vertical direction. Due to the permanent contact of the process material, wear and tear often only occurs in a very small area on the rollers, especially if the guide gap is set close to the process material diameter. Usually only 25% of the roll length is damaged. In order to avoid damage to the process material, standard maintenance strategies recommend replacing only locally damaged rollers. Although this is good for the final product quality, it has a detrimental effect on the cost-effectiveness of the production.

Roller guides of the new RK VE SH series provide a solution to this problem, as they permit both radial and axial displacement and securing of the individually positioned rollers. 

The radial adjustment and securing of the roller axels with the rollers is achieved by means of slotted holes in the basic body of a roller box and associated hexagon nuts. This is known from the RK VE series.

Due to the special design of the roller axels, axial displacement of the roller axels with the rollers is also possible. The multi-part and externally threaded roller axels protrude more or less laterally from the basic body of a roller box section after axial displacement. This may take some getting used to, but it gives users the advantage of setting the contact or wear point correctly and achieving a 4 times longer roller life. 

Roller guides of the RK VE SH series are available in two sizes for process material diameters up to 5.0 mm and 10.0 mm.

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Product category: Straightening

Guiding up to 20 and 30 mm

In addition to the radial and axial adjustment of roller axels and rollers (please refer RK VE SH), the selection of the roller material has a decisive impact on the service life of the tools of roller guides.

The WITELS-ALBERT GmbH models RK 20 and RK 30 are made of the wear-resistant material 1.2436. Each roller is also fully hardened to a nominal hardness of 63 HRC. Rough environmental conditions and wire surfaces as well as ever higher process material speeds cause wear, which must be avoided as far as possible from the point of view of the efforts to permanently reduce costs. The use of alternative materials is recommended, which can be hardened up to 68 HRC. However, the disadvantage of these materials is that they are costly, which makes it possible to reduce costs only to a limited extent. Of course, ceramics and tungsten carbide can also be considered, but the prices of these materials are much higher. From our point of view, these materials do not represent a solution for the economical production of solid roller bodies for roller guides.

Nevertheless, how can the service life be increased?

This is achieved by a design that uses a high-quality material such as tungsten carbide in a special geometry, which can be produced inexpensively and is available at a reasonable price. 

The roller designs of the newly developed roller guides RK HM series use tungsten carbide bars placed over the roll circumference. The bars are supported by a rotation-symmetrical design element, which also houses the bearings of a guide roller and the axel studs.

Due to the gaps between the individual bars, the effect of the automatic proportional descaling of the process material results when guiding wire rod. 

Nevertheless, if the tungsten carbide rods installed in the contact area with the wire are worn out after some time, they do not have to be replaced. A simple turn around the longitudinal axis by 90° increases the service life significantly. The disassembly and assembly required for this purpose can be carried out quickly and easily within the scope of maintenance.

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Product category: Straightening

Straightening larger sized wire

The processing of wires with a diameter of more than 8 mm is associated with handling challenges, since the large moment of resistance requires correspondingly high forces and moments to be applied when processing the process material. In addition, there are binding health and safety requirements, such as those contained in Directive 2006/42/EC. This Directive requires that the physical stresses on operators must be reduced to a minimum.

This is where the new products for processing large wire diameters from WITELS-ALBERT GmbH come into play, regardless of whether it is the processing of rolled wire, reinforced steel wire, cold heading wire or spring steel wire.

If the geometric and mechanical parameters of a wire as well as the parameters of the straightener or the straightening machine are known, the forces and moments occurring during straightening can be calculated with good approximation. For large wire diameters there are sometimes straightening forces of more than 100 kN per straightening roller. A simple mechanism for the individual adjustment of straightening rollers under this load is possible and available. A compact and affordable mechanism for the quick-opening/closing mechanism working against all straightening rollers and using only the muscular power of the operator is not, however.

Therefore, it was considered impossible to implement the following features for processing large wire diameters in one design.

  • Individually adjustable straightening rollers to ensure an identical zero line for different wire diameters/cross-sectional geometries and a collision-free wire path between the first and second straightening plane.
  • Mechanical position indicators PO for the defined and reproducible adjustment of the straightening rollers.
  • Quick opening/closing mechanism. Compact, simple and reasonable.
WITELS-ALBERT GmbH has solved this conflict and introduces a total of 9 new straightening machines for the processing of wires with a total diameter range from 9 mm to 40 mm. Depending on the application area and wire properties, models with 5, 7 or 9 straightening rollers can be selected.

All RA H PO straightening machines come ex works with hydraulic cylinders for the quick opening/closing mechanism and with straightening rollers of the WR series. Depending on the application, the wire material, the yield point of the wire and/or the wire speed, it can be useful to use rollers of the GB SL series on straightening machines. These high-performance straightening rollers have special bearings, a fully hardened sleeve made of a very wear-resistant steel material and they can be re-greased.

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Product category: Straightening

Strip straightening

The processing of flat wires and strips with a large ratio between width and thickness is possible with BKV strip straighteners, whose straightening rollers are supported on both sides. With sufficiently rigid designed straightening rollers, this roller support ensures parallel and/or conical straightening gap geometries under load, so that both the flat and the edge-bow straightening process can be performed with just one straightener. 

The straighteners BKV 7 series cover the straightening ranges 0.6-1.5 mm, 1.5-3.5 mm and 3.5-7.0 mm. Four of the seven turnable straightening rollers of each straightener are fixed mounted in the main body and represent a fixed bottom line of a strip regardless of the specific strip thickness. The remaining three straightening rollers are arranged shifted and can be adjusted. Each of the adjustable straightening rollers is equipped with two spindle mechanisms whose mechanical position indicators PO allow a defined and reproducible roller setting. 

Each strip straightener BKV 7 series is equipped with a quick opening/closing mechanism supporting a rapid change of the process material. The upper frame of a BKV straightener opens around a pivot point after unlocking. The strip can be inserted and the straightener can then be closed and locked. At a given closing moment, the greatest closing force is achieved near the pivot point. Correspondingly, it is advisable to place a strip straightener BKV series in a processing line in such a way that the pivot point of the quick opening/closing mechanism is located at the strip entering point, where the largest roll adjustments are realized and the greatest roller forces are to be expected. 

Very thin and wide flat wires and strips, which also have increased elastic limits, need to be straightened more and more frequently. As a rule, seven straightening rolls are not sufficient for their processing. 

With this in the background, the newly developed BKV 9-60 straighteners are used. They have nine fully hardened straightening rollers with a diameter of 16 mm only. With an also adjusted roller spacing, strip thicknesses between 0.1 mm and 0.6 mm can be deformed successfully. As with the strip straighteners BKV 7 series, the upper straightening rollers of the straightener BKV 9-60 can be adjusted on both sides, so that both the flat and the edge-bow straightening process can be performed with just one unit.

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Product category: Straightening

Accessories for straighteners ER series

The best-selling accessories from WITELS-ALBERT GmbH for straighteners are mechanical position indicators PO for the defined and reproducible adjustment of straightening rollers. The PO position indicators are available in various sizes and can be mounted on almost all series of straighteners. New in the range are the straighteners ER 5-0.8 PO, ER 7-0.8 PO, ER 9-0.8 PO, ER 11-0.8 PO and ER 13-0.8 PO, which are suitable for processing wires with diameters ranging from 0.5 mm to 0.8 mm.

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Product category: Straightening

Accessories for RT and RTS units

Assemblies with base plates for the design of straightening systems are available for the series ERS, KV, LR, PR, PS, RA and RB.

Usually two straighteners are mounted in different planes. Assemblies with base plates are now also available for RT and RTS series straighteners.

Up to six RT/RTS straighteners of the same size can be connected to form a straightening system or straightening chain. At least two straighteners of a straightening system or straightening chain must have an identical number of rollers. Connecting brackets VW are always part of a design.

Discover our smart and ready-to-install assemblies, making it possible to straighten round wires in up to four straightening planes and achieving a convincing straightening quality.

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Product category: Straightening

GET YOUR FREE WIRE 2018 TICKET VOUCHER

We offer interested parties and customers the opportunity to request vouchers for admission tickets. Call us (+49 30 723 988 27) and follow WITELS-ALBERT on Facebook and/or Twitter. Please understand that the quota is limited.

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Company news

Date

Topic

Download

Nov 29, 2017

Ideas and products for success

Under the motto "BETTER SMART THAN HARD", WITELS-ALBERT GmbH from Berlin presents new ideas and products for guiding, straightening and transporting process materials. 

„Ideas are the raw material of the future. The art of promoting and developing this raw material is becoming increasingly important for the success of companies.“ 

The intelligent processing of wires, tubes, ropes, cables, flat wires and strips is the focal point of the trade fair presentation. Visitors to the exhibition stand will discover offers that promise easy handling, high productivity and lasting value. Individual advice and recommendations for the use of products in future-oriented fields enrich your visit to the trade fair. 

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About us

Company details

 The WITELS-ALBERT GmbH specializes in the guiding, straightening and feeding of endless materials and builds machines to perform these operations.

The firm’s history dates back to 1898. Also supported by a sales office in the US and more than 20 representatives worldwide the export share is about 65 %.

Optimum production organization and control (KANBAN) ensure the rapid availability of all products. Continuous investments in R&D result in constant innovation and customer advantages.

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Company data

Sales volume

1-9 Mio US $

Export content

max. 75%

Number of employees

20-49

Foundation

1898

Area of business
  • Wire industry
  • Cable industry
  • Trade, technical specialist retail trade
  • Services