Productivity gain for Swedish corrosion protection service provider
Covestro increases the profitability of wind turbines
Pasquick™: fewer coats, greater efficiency, faster curing
Corrosion protection specialist Alucrom AB used a coating system of just two layers from Hempel for an efficient and lasting protection of the gigantic steel towers for wind power plants. The topcoat is based on Pasquick™ technology by Covestro. By that the company contributes to a higher profitability of this renewable energy.
Wind power is among the most sustainable technologies for generating
electricity and it is achieving tremendous growth rates worldwide. However, to
fully exploit the potential of this renewable energy source, wind turbines need to
become significantly more cost-efficient to manufacture and operate. One critical
factor in this connection is the corrosion protection of the enormous steel
Swedish corrosion protection specialist Alucrom AB operates a major plant in
Malmö for coating wind turbine components: in 2008 alone, steel towers with a
surface area exceeding 300,000 square meters were blasted and coated. To
satisfy the rising demand, Alucrom was in search of a cost-efficient and timesaving
coating solution, and turned to the Danish coatings producer Hempel A/S
Six steel towers a week
Hempel mastered the task by developing a coating system of just two layers,
comprising a zinc epoxy primer and a topcoat based on Pasquick™ technology
from Covestro. The technology and coating system passed all tests and Alucrom
had been using them as a standard solution ever since. The company was now
in a position to deliver six, gigantic steel towers a week to its customer Enercon
Windtower Production AB.
With Pasquick™ technology, the number of coats can be reduced compared with
the conventional process. The outer layer is thicker; Alucrom worked with a dry
layer thickness of 320 micrometers. In addition, the coatings cure faster. Both factors help to further reduce the cycle time and manufacturing cost of wind turbines.
Lasting corrosion protection, low maintenance
The corrosion protection is just as long-lasting and high in quality as with the
standard process. This is an important prerequisite for producing turbines with
long service lives and minimal maintenance requirements and thus for the costeffective
use of wind energy.
The technology has advantages over conventional coatings even in ecological
terms: Alucrom observed a significant reduction of some 30 percent in the
emission of volatile organic components (VOC).
The collaboration between Alucrom and Enercon began in 2008 and ended in
2015, when the wind turbine manufacturer decided to apply the coatings itself.
The outstanding results, however, are unchanged: efficient, lasting, lowmaintenance
corrosion protection for wind turbines.
Visit us at the European Coatings Show 2017 from April 4 to 6 in Nuremberg,
Hall 4A, Stand 528.