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Rolling Mills

Osborn offers different types of roller brushes for the manufacturing processes of sheet and strip in steel and rolling mills.

Fill Materials.
Types and Usage.

Synthetic Monofilaments - Non Abrasive, Standard Types

Novofil NN NM NH HR PR
Temperature resistance
Permanent (°C) 90 95 95 90 70
Max. short-term (°C) 120 130 120 120 100
Mechanical properties
Bend recovery ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
Stiffness ✘ ✔ ✔ ✔ ✔ ✔ ✔
Resistance to abrasion ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
Chemical resistance
Against alkalines ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
Against acids ✘ ✘ ✔ ✘ ✔ ✔

✔ ✔: Excellent; ✔: Good; ✘: Not suitable

Synthetic Monofilaments - Abrasive, Standard Types

Novofil NH-S NH-A NN-S NN-A HR-S HR-A
Abrasive Material SiC Al2O3 SiC Al2O3 SiC Al2O3
Grit Size 46-1000 80-1000 46-500 60-500 180-320 180-320
Temperature resistance
Permanent (°C) 95 95 90 90 95 95
Max. short-term (°C) 120 120 120 120 130 130
Mechanical properties
Bend recovery ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
Stiffness ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
Resistance to abrasion ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
Chemical resistance
Against alkalines ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
Against acids ✔ ✔ ✘ ✘ ✘ ✘

✔ ✔: Excellent; ✔: Good; ✘: Not suitable

Crimped Metal Wires, Standard Types

Wire Steel Stainless Steel Brass Phosphor-Bronze
Carbon steel AB steel
(alloyed)		 Bessemer
soft steel		 Brass coated Cord wire
brass coated

1.4310

 Highly noncorrosive
1.4401, 1.4571		 Highly heatresistant
Temperature resistance
Permanent (°C) 300 300 250 300 300 400 500 500-1250 170 170
Wear properties
Tensile strength (N/mm2) 1900-2100 2400-2700 700-1200 2300 1900-2300 1700-1900 1700-1800 1600 900 1000-1300
Fatigue resistance ✔ ✔ ✔ ✘ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✘ ✔
Erosion performance ✔ ✔ ✔ ✘ ✔ ✔ ✔ ✔ ✔ ✘ ✔ ✘ ✘

✔ ✔: Excellent; ✔: Good; ✘: Not suitable

Micro-Fibre Multifilament

Novofil MY MY-A MY-S MX
Material group not abrasive abrasive abrasive Filament mixture
Abrasive material   Al2O3 SiC SiC/Al2O3
Properties
  • Micro-fibre multifilaments are usually manufactured with high densities into special Osborn HDL® brush constructions.
  • The filament selection and specification will be defined and customized to the specific application.
  • Our application engineers are glad to give further assistance.

Natural Fibre and Animal Hair

Filament Horse Hair Tampico
Material Group Animal Hair Natural Fibre
Properties
  • very soft bristle with low static charging and excellent sealing effect
  • suitable for careful cleaning of extremely sensitive surfaces, to apply liquids or for brush sealings
  • very good temperature resistance as well as electric conductivity
  • used for dedusting, light cleaning and applying polishing emulsions

Our Services in Burgwald.

Through many years of cooperative development work with machinery manufacturers in the design of rolls and brushing machines as well as with the operators concerning production line and process optimization, we achieved wealth of experience in this field. Through our worldwide sales and service network we are able to guarantee comprehensive technical support for new production lines around the globe in all stages of project development from the initial design to commissioning.
A whole list of well-known manufacturers in the business of strip and heat treatment plants and rolling mill technology benefits from this expertise, which ultimately rewards the plant operator in the form of highly engineered products, innovative technologies and cost effective solutions.
In addition to the manufacturing of complete brush rollers with different shafts and body constructions, our range of services also includes bearing units, splash rings and accessories. We also manufacture and supply shafts and complete systems for other roll types used in strip line systems. These come without or upon request, with hard chrome, polyurethane, rubber or other special coatings.

For Factory Assembly (FA) brush roll systems (Integrated maintenance service) we offer the following services:

  • Brush roll re-filling and non-woven refurbishment
  • Integrated maintenance service concepts
  • Re-trimming and re-balancing of brush rolls
  • Shafts and journal control and repairing
  • Bearing control and exchange
  • Shaft improvement/adaptation
  • Shaft straightening
  • Stress free annealing of shafts
  • Replacement of end and balancing collars
  • Replacement of fittings and accessories
  • Transport and packaging concepts
  • Supply of brush roll trimming equipment

Upon receipt by our service centre, each roller immediately undergoes a professional inspection in accordance to the agreed upon service contract. The condition as well as the time and expense involved with the maintenance are documented with the aid of standardised protocols. The longer the service life of rollers, the more important it is to have the proper condition of the bearings to avoid additional downtime or outages. For this reason, bearing units are checked and maintained by us. If necessary, the bearing unit or other accessories are renewed.

The quiet and low-vibration running of the rollers is important in order to avoid shatter marks or shading on the strip surface caused by the brush roller. Each shaft is checked for imbalance and concentricity deviation so that it can be straightened and rebalanced if necessary. Worn bearing seats are welded and precisely re-machined to the original specification.
Following this, immediate re-brushing or assembly of prefabricated brush segments takes place.

Before - the filling is worn out and needs to be refilled

Step 1 - The used material gets completely removed and the roller is covered with new material

Step 2 - To achieve the best possible result, the brush surface is sheared and processed.

Step 3 - The brush is carefully aligned and precisely balanced to ensure optimal results.

Once all parameters have been checked, it is secured and packed for safe delivery back to the customer.

Content

Brush Rolls

Depending on the type and degree of contamination of the primary material and the strip cleanliness required for the process step, different requirements are placed on the brush. While optimum degreasing and micro-cleaning can be achieved with non-abrasive multifilaments, abrasive filaments are ideal for removing strongly adhering material residues from the previous rolling process.

Brush Furnace Rolls

The brush transport rolls are used in horizontal roller hearth furnaces for heat-treating aluminium plates at temperatures up to 600 °C, ensuring precise and gentle handling even for very large and heavy plates. Their extremely dense, heat-resistant stainless-steel wire fillings in special alloys provide excellent temperature resistance, optimized plate tracking, and clear advantages over uncoated or ceramic-coated rolls.

Non-Woven Rolls

In dry and especially wet conditions, non-woven fabric has an excellent and consistent friction coefficient, both on oil and aqueous media. The friction coefficients of rubber or polyurethane coated rollers, on the other hand, are very low, which can easily lead to aquaplaning on non-driven rollers.

Non-Woven Abrasive Rolls

Our Lipprite® product range expands the product range of polishing tools and compounds, wire or various abrasive bristle roller brushes. Lipprite® roller brushes with lamellar abrasive fleeces are tools with a different efficiency and have different requirements for the metal surface, although they can also be used for cleaning.
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