DAFA Wind brochure

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DAFA WINDTM

Foam, rubber and plastic solutions that seal, absorb and protect

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DAFA WINDTM – partnership for superior performance in the wind turbine industry

• DAFA A/S is a family-owned Danish com-pany with more than 75 years of experience in the development, production and sale of special foam, rubber and plastic products

• More than 150 employees worldwide, work-ing in consultancy, development, customer service, production and logistics

• Close collaboration with a wide variety of in-ternational business partners and suppliers

• State-of-the-art industrial production equip-ment with the latest and most advanced robot-guided machinery and processes to ensure delivery of competitive solutions

• Effective logistics and efficient delivery that match your production processes

DAFA A/S is geared to accommodating new and untried challenges in foam or rubber solutions that seal, absorb and protect.

Valuable, commercial contributions to make your wind turbine manufacturing stronger and more competitive.

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DAFA A/S has extensive experience in the wind turbine industry. We have close, long-stand-ing business relationships with several of the largest wind turbine manufacturers worldwide.

At the same time, we work closely with and are part of a network of external suppliers to the wind turbine industry, helped greatly by our involvement in the Danish Wind Export Association (DWEA).

Strong onshore and offshore relationships worldwide

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DAFA WINDTM – improving functions and applications in the wind turbine industry

The wind turbine industry is constantly developing and expanding. New solutions, methods, technologies and designs keep emerging. With extensive insight and a great deal of experience in wind turbines, DAFA contributes to this development.

This makes DAFA your trusted business partner for foam, rubber and plastic solutions that improve wind turbine functions –

onshore and offshore.

DAFA’s nacelle solutions are many and varied. These solutions help structures and electronic components in the nacelle to withstand stress, to perform better and thus to last longer.

DAFA’s solutions for tower structures im-prove safety to avoid accidents and make maintenance easier. This benefits the operating costs and increases the durabil-ity and service life of the tower.

DAFA’s tower solutions make transporta-tion safer, thus reducing expensive re-pairs. And our Foundation System Solution for recessing ensures a time-saving and effortless implementation.

Nacelle

Tower

Safety is of vital importance when trans-porting blades, and high quality is crucial in the manufacture of blades.

In both cases, DAFA’s foam and rubber solutions offer significant benefits for the design and strength of the blades, making them last longer.

Blades & Transport

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The challenges of the wind turbine industry are important and relevant – both locally for the individual manufacturer and globally because wind turbines make a significant contribution to a better environment and sustainability.

In this industry, technological developments are constantly challenged with new, innovative solutions and methods.

DAFA offers expertise in three key areas.

Seals• Seals to prevent sand, dust, water and

moisture from penetrating the structures of wind turbines

• No degradation or damage to vital components

• Better wind turbine performance

• Extended durability

Absorbs• Reduces the reflection of airborne noise

in the wind turbine

• Provides dampening when the source of the noise has to be insulated or screened off

• Prevents plate vibrations from being reproduced in structures or reaching electronic components

Protects• Protects against impact, heavy loads,

momentary influences, static and shear stress

• Distributes load forces or serves as a shock absorber

• Prevents the equipment from break down

• Provides safety for the personnel

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Let yourself inspire by the areas of application for DAFA’s nacelle solutions.

On the following pages, the different cases will guide you through the function and benefits of the various nacelle solutions.

Nacelle

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When different materials meet, creating a seal to prevent penetration of water, salt, sand and dust is even more demanding. Special gaskets for fibreglass and steel structures provide the seal required, despite great shear stress.

Advantages

• Flexible products – absorbing tolerances

• Adheres to both steel and fibreglass

• Quick and easy mounting

• Materials ensuring long service life and durability

Multiple materials, close interaction

DAFA Soft, DAFA Cell, cellular rubber profiles, self-adhesive profiles and EPDM profiles are some of the product types used as gaskets in fibreglass and steel structures.

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Nacelle

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There is a constant focus on reducing noise from wind turbines, which can be an environmental nuisance. This applies to both high-frequency and low-frequency noise.

Accordingly, effective sound damping is essential for a good outcome so that neighbours and wind turbines can coexist in harmony. DAFA Sound is a com-plete industrial sound damping concept designed and developed to combine sound absorption, sound insulation and structural sound damping – in one or more varieties.

DAFA Sound™ damping creates harmony between wind turbines and people

Structural sound damping– to prevent the transfer of vibrations

Sound insulation– to insulate or screen off the source of

the sound from its environment

Sound absorption– to reduce the reflection of airborne sound

• DAFA Sound ABS™ – for sound absorption based on fire retardant PUR foam

• DAFA Sound ISO™ – for sound insulation based on high density PUR foam

• DAFA Sound BLOCKER™ – heavy-duty foils based on EPDM rubber, cardboard or bitumen

• DAFA Sound COMBI™ – combines products with different characteris-tics – e.g. bitumen and PUR foam

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Nacelle

DAFA solutions are the best choice for keeping the rotating parts of the nacelle free of salt, sand, water and dust, or when stringent requirements have to be met for sealing the nacelle and hub.

Advantages

• Durable and easily replaceable prod-ucts

• Absorption and equalisation of toler-ances

• Reduced penetration of cold, heat, sound, dust, water and salt

• Using DAFA RotaSeal optimises the uptime for the wind turbine preventing water, sand, salt and other particles from entering critical parts such as electronics and hydraulics

• DAFA RotaSeal is designed for fast and efficient mounting, both horizon-tally and vertically

Watch the DAFA RotaSeal Wind animation by scanning the QR code

Download the product sheet on our website

DAFA RotaSeal® increases productivity

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DAFA A/S • Holmstrupgårdvej 12 • DK-8220 Brabrand • Tel. +45 87 47 66 66 • E-mail [email protected] • www.dafa.dk

Technical material data

Specification UnitDAFA Combi PTM DAFA PUR STM DAFA PUR MTM

Color

Black Brown / Yellow Dark brown

Density DIN 1183-1 g/cm3 1,43

1,241,17

Hardness DIN ISO 7619-1 °Sh A ±5° 75

7070

Tensile strengthDIN 53504 MPa

10min 35 52

Elongation at breakDIN 53504 %

275min 500 800

Abrasion resistance*ISO 4649 mm3 353

1016,5

Compression set at 70° and 22h DIN ISO 815 %25

15

Tear strengthDIN ISO 34-1 N/mm 6

3054

Temperature resistance

°C-40 – +100 -40 – +70 -40 – +80

*Abrasion resistance tested according to ISO 4649. Distance 40 m and load 10 N

Determination of tensile stress at break according to DIN 53504

Exposed to media for 1000 hours at +65°C

Un

exp

ose

d r

efe

ren

ce v

alu

e =

In

dex 100 %

Antifreeze

Eurol Coolant

Hydraulic fluid

Hyspin AWH-M32

Gear oil

Optigear CT320

Gear oil

Optigear X320

Grease

Optimal Optipit

EPDM rubber

60° Shore A

DAFA Combi PTM

DAFA PUR MTM

DAFA PUR STM

Recommended range20 - 110 mm

t = 4 - 7 mm

t = 4

- 7

mm



t = 4

- 7

mm

• DAFA RotaSeal materials are tested up against common hydraulic and gear oils, antifreeze fluids and greases ac-cording to DIN 53504

• DAFA RotaSeal is tested for abrasion properties according to DIN ISO 4649

• DAFA RotaSeal is designed for a wide range of constructions and adopts to tolerances in the given application

• Clamping profiles are produced with stainless steel EN 1.4301

• DAFA RotaSeal solutions are designed focusing on low friction and abrasion

• DAFA RotaSeal solutions fit both fi-breglass, steel and aluminium flanges and plates

• DAFA RotaSeal is tested for wear ac-cording to ASTM G99

• Fast delivery

DAFA RotaSeal solutions are designed for optimal long-life sealing solutions for rotating parts in wind turbines.

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EPDM cellular rubber gaskets are particularly suitable for large roof hatches.

The roof hatch of the nacelle has large surfaces with large tolerances, which must be sealed and capable of diverting water.

The design and the choice of materials are handled individually, corresponding to your specific requirements.

Advantages

• Solutions based on proven and tested technology

• Robust, durable materials, capable of absorbing large tolerances and movements

• Greater durability and a longer service life

Sealing of large surfaces – right at the top

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Nacelle

Doors and skylights are sealed using cellular and rubber profiles that can be supplied as rings to ensure a sealed joint. For hatches, self-adhesive sealing strips are used in various elastic materials.

Requirements for sealing doors, hatches and skylights mainly address the need to keep out pouring rain. The solution consists of products which:

• Equalise tolerances

• Ensure easy mounting

• Ensure a long service life and durability

Durable solutions for a long service life

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Butyl and silicone profiles for sealing in composite moulding processes.

Complete sealing solutions for moulding of fibreglass elements. The goal is to optimise and streamline the production process by reducing and facilitating the work processes.

This results in operational reliability and a uniform moulding process to ensure the high quality of the final products.

• Reliable sealing

• Temperature resistant

• Resistant to the materials used for the moulding processes

Reliable moulding process with sealed joints

Sharp edges can make for a par-ticularly unpleasant encounter for workers carrying out maintenance. The same sharp edges can also ruin leads and cables, causing damage over time.

Our customised edge profiles:

• Are easy to replace and can be retrofitted

• Reduce repair and maintenance costs

• Contributes to a safer working environment

When sharp edges must be soft and round

To protect sharp edges, DAFA supplies customised edge profiles with or without steel inserts.

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Easy removal and fitting of doors, hatches and panels with self- adhesive strips and rubber pro-files for sealing between individu-al components.

Reliable solutions for facilitating service and maintenance processes.

Advantages

• Customised sealing strips for maximum sealing

• Minimise risks in connection with mounting and dismantling

• Quick, easy and efficient mounting in the production hall or on site

• No waste of precious time for hardening, as with joint sealant

• Elastic sealing strips withstanding violent movements

• Greater durability, long service life and a better working environment

Sealed joints and a safe working environment

Nacelle

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When cables, leads and pipes have to penetrate walls, floors and other structures, effective sealing products are required – for construction and maintenance alike.

Advantages

• No special tools, sealing, glue or grouting required

• Temperature resistant at mounting

• Can be designed to comply with IP sealing requirements

• Easy to replace and can be retrofitted

• Reduced repair and maintenance costs

• Flexible, universal seal

Cable and pipe solutions

The challenge is to dampen vibrations and prevent them from straining and spreading to the vital parts and struc-tures of the nacelle.

Advantages

• Reduces vibrations

• Fewer production shutdowns and increased operational reliability

• Reduced maintenance costs

• Greater durability and a longer service life

Vibration damping

Cable and pipe seals are universal and fit many different sizes.

Vibration damping using PUR foam and rubber.

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Nacelle

Courtesy of Vestas Wind Systems A/S

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Our moulded parts are customised for individual applications – for all indu-stry segments. They satisfy require-ments for sealing functions, flexibility, damping, durability and resistance to chemicals all at once.

Advantages

• Technical rubber types

• Unique properties

• Flexible series runs

• Available in small and large sizes

• From simple to complex parts

• Focused development process

• Qualified advice

• NR rubber

• EPDM rubber

• Silicone rubber

• EPDM sponge rubber

• CR rubber

• PUR rubber

• NBR rubber

• TPE

Moulded parts – customised for individual applications

DAFA develops and delivers customer-specific moulded components in both small and large sizes.

Depending on the complexity of the component and its design, we develop and produce a customer-specific tool that is perfectly adapted to the indivi-dual application of one of the following production methods:

• Compression moulding

• Transfer moulding

• Injection moulding

• Vulcanised corners

Developing and producing moulded parts demands access to a wide range of raw materials.

The varying properties of the raw materials form the basis for com-binations that create unique and individual components perfectly customised to the individual task.

A sound basis with a wide range of raw materials

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DAFA’s blade solutions are particularly suitable for both transportation and storage of blades as well as during the moulding process.

On the following pages you will find a presentation of the various blade solutions.

Blades

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Optimal visibility night and day thanks to strong reflec-tors.

Extra add-ons: easily re-movable tape, flashing beacon and plastic bracket for increased safety during transport.

Shock-absorbing PE foam in signal colour. Available in versions for onsite storage and for transport.

Universal solution that fits all blade types.

Protecting the fragile blade tips during handling and trans-port is crucial. DAFA universal tip protector prevents damag-es, ensures increased visibility and protects against personal injuries when people are in the vicinity of the blades.

DAFA universal tip protector - Protecting sensitive tips

Advantages:

• Optimal protection during transport, handling and onsite storage of blades

• Prevents costly delays due to damages and repairs

• Universal solutions that fits all blade types

• Increased visibility night and day

• A safer working environment

• Easy mounting, no tool costs

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Blades

The process of moulding fibreglass elements must proceed efficiently and with maximum safety. Our sealing profiles in silicone and other production auxilia-ries contribute to optimising the production process.

Advantages

• Reliable and uniform moulding process to ensure high quality

• Improves efficiency by reducing and facilitating work processes

• Products with excellent adhesive properties

• Temperature-resistant products

• Resistant to the materials used in the moulding processes

Safe moulding process for top performance

Butyl and silicone profiles for sealing in moulding processes.

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Shock-absorbing PE foam with stainless steel-reinforced core to protect the rear edge of the blade.

The solution is primarily intended to protect and secure the trailing edge of the blade when it is attached using transportation straps.

The pressure on the blade is dis-tributed effectively through a steel plate and foam insert. Alternatively, a reinforced PE protective profile can be used.

Advantages

• Fewer repairs

• Flexible fit

• Bright signal colours for increased safety

• Easy mounting and handling

• Long service life and durability

• Supplied as rolls or spools

Safe universal protection of the trailing edge

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Blades

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The blades must arrive safely on site and should be stored properly.

Rubber mats and foam solutions keep the blades intact. The mats reduce traction during transportation ow-ing to the surface providing suitable contact with the fibreglass.

Advantages

• Does not deteriorate and can be reused with its functionality intact

• Large load-bearing capacity and slip resistant

• Weather resistant, with a long service life

• Safe transportation without damage or repairs

• Easy to handle

• High friction

Transport protection and safe storage on site

Foam rubber or granulated rubber mats.

Transport solution with solid LDPE foam.

Blade bumper solution with PE foam.

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The following pages highlight some of DAFA’s solutions for production, transport, foundation and maintenance of the tower.

Tower

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Ensuring that the tower door is impervious to rain, dust and sand is crucial. The handling can be difficult. A simple, customised sealing profile with or without joints seals the door and facilitates an easy mounting – both when establishing the seal and during maintenance.

Advantages

• Supplied in rolls or rings to avoid joints

• Quick and efficient mounting

• Easy to retrofit

• Absorbs tolerances and movements

• Superior durability and exceptional service life

First-class sealing for doors

EPDM cellular rubber profile with steel or plastic insert for sealing tower doors.

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Tower

DAFA Tower Foundation SystemTM

The process of establishing a concrete foundation is awkward and time-consuming. This is very much the case with traditional recessing and shuttering using steel and wood. Thus, a custom-ized foam solution ensures particularly quick and effective implementation.

The solution is rubber profiles or self-adhesive and flexible sealing strips.

Advantages

• Customised solution


• Fast delivery

• Consistent moulding

• Minimum waste of high density concrete

• No tool costs

• Easy disposal

• No tool costs

PE foam foundation blocks for recesses in the foundation.

Recessing in the foundation saves time and effort

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Transporting large towers weighing many tonnes requires a safe, protective underlay capable of distributing the pressure of the load. DAFA CargoSafe

is a reliable solution.

Advantages

• No deterioration and reuseable with its functionality intact

• Large load-bearing capacity and slip resistance

• Long service life due to weather resistance

• Safe transportation without damage or repairs

• Easy to handle

• Low friction

Long-term security

Skidproof mats, DAFA Cargo Safe for protection during transportation.

Over time, jointing sealant may crack and lose its capacity to absorb mas-sive tolerances. A flexible rubber ring serves as a membrane and is a robust solution for sealing the foundation and tower.

At the same time, the liner diverts water and moisture.

Advantages




Sealing between foundation and tower

Rubber membranes for sealing and diverting water.

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DAFA Cell cellular rubber is suit-able for sealing platform joints.

The solution serves both as a seal and as a damper on the platforms. The solution comprises sealing strips to dampen vibrations and equalise tolerances to prevent water and oil from running down inside the tower.

Advantages





Tower

Preventing leaks

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A seal is required when tower sections are joined. Joint sealant can be awk-ward to work with and takes a long time to cure. Cracks – and thus leaks – may appear later.

The solution consists of rubber profiles or self-adhesive and flexible sealing strips.

Advantages

• Retains flexibility and elasticity

• Quick and easy mounting with no hardening time

• Weather-resistant joint solution

Clever solution for safely sealed sections

Self-adhesive sealing strips for both vertical and horizontal sealing when assembling tower elements.

Rubber profiles are used to seal the platforms.

The challenge is to seal the platforms in order to prevent loose objects, tools or equipment from having free passage.

This prevents injuries to personnel. In addition, the seal provides a neat finish against the side of the tower.

Advantages




Secure platform with sealing solutions

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Strong commitment

Always on time

Trustful collaboration

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Requirements for speed and quality play a vital role in all phases of collaboration. Our experience shows that it is vital to strike the right balance.

DAFA gives high priority to speed and quality. Both parameters apply as the focus is constantly on your current needs.

Our solutions must be effective and sustainable, as well as being developed, produced and delivered to the right place at the right time.

Our three step collaboration process cre-ates the best foundation for achieving valu-able results.

General agreement

• Definition of quality, functionality, scope, delivery times, prices and payment terms

• Starting point for a valued partnership

The right balance of speed and quality strengthens collaboration

Specification of requirements

• Initial contact and meetings

• Defining the task

• Preparing the specification of requirements for approval

Prototype and testing

• Preparing prototypes

• Testing in conjunction with your design

• Any further development

• Approval of functional and visual properties

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ENVIRONMENTAL CERTIFICATE

WEEE RoHS REACH COMPLIANCEENVIRONMENTAL CERTIFICATE

WEEE RoHS REACH COMPLIANCE

WEEE RoHS REACH COMPLIANCE

GOLD 2015Highest creditworthiness

Bisnode 2015

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Website dafa-as.com

LinkedInlinkedin.dafa.dk

DAFA Sealing Technology (Tianjin) Co., Ltd. Tel +86 10 8453 7408/7428/6924/6964www.dafachina.cn

DAFA USA Tel +1 312 261 6013 www.dafa-as.com

DAFA A/S (HQ)Holmstrupgaardvej 12 DK-8220 Brabrand Tel +45 8747 6666 E-mail [email protected] www.dafa.dk

DAFA Sverige AB Tel +46 (0) 431 258 30 www.dafa.se

DAFA GermanyTel +49 2761 94295-0www.dafa-germany.de

DAFA Wind brochure

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