Systèmes de revêtement  Producteurs, Vendeurs, Fournisseurs

La technologie de surface de l`inventeur du trowalisation
Walther Trowal développe et produit depuis 1931 des solutions de procédés pour le traitement des surfaces. Partant de la technique de la tribofinition - le terme "trowaliser" est dérivé de "Trommel Walther" - Walther Trowal a continuellement élargi sa gamme de produits.
C`est ainsi qu`est née une diversité d`installations et de machines pour la tribofinition et le grenaillage ainsi que pour le revêtement de petites pièces de masse.
Avec l`invention de nouveaux procédés, comme la rectification par traînée ou les procédés d`usinage de pièces fabriquées de manière additive, l`entreprise a toujours démontré sa grande capacité d`innovation.
Walther Trowal réalise des solutions système complètes qui s`intègrent parfaitement dans les processus de production en chaîne des clients. Cela comprend l`ensemble de la technique de procédé adaptée aux exigences spécifiques des pièces, dans laquelle les machines et les moyens de procédé se complètent parfaitement.
Étant donné que chaque pièce et chaque processus de production posent des exigences particulières à la technique de processus, les spécialistes expérimentés du service d`essai élaborent, en collaboration avec les clients, la technique de processus optimale. Le résultat : des pièces avec des surfaces qui correspondent exactement aux spécifications ... avec un temps d`usinage court et une reproductibilité élevée.

Due to the outstanding physical properties, our various coating systems provide a versatile range of use for tanks and vessels. They show ultimate corrosion protection against natural influences and long-term UV-stability for external coating of tanks and steel constructions. As internal coatings for special tanks and process vessels, our products perform high-grade resistance properties at elevated operating temperatures.
 
Our high-performance coatings achieve the complex requirements in the range of oil and gas to their full extent. The demands for adequate corrosion protection in this field of application require excellent chemical resistance at high operating temperatures combined with extreme pressure resistance.
 
One of our premium products was tested extensively by the research institutes of Saudi Aramco, the biggest oil company worldwide. Our coating is approved for Saudi Aramco-Standards APCS-2i, APCS-28 and APCS-117. Various internal coating applications for newly built and renewed tanks in Saudi Aramco oil and gas refineries are primarily conducted with our approved product.
 
Particular parts of our product range are coating systems with electrostatic dissipation capabilities which we invented for the storage of highly flammable substances. When oxygen is present during electrostatic charging, explosive reactions could occur in the vapor phase, the upper area of the tank. By the addition of nano-carbon fibers, conductive chains are formed in the coating. These facilitate the dissipation of electric charging and prevent dangerous reactions of the storage fluids.
 
By integration of special particles into the ceramic-filled epoxide resin coatings, isolating properties are attained. These specific coating systems are especially qualified outstandingly for tanks and pipelines with exceeding temperature loads. Furthermore, they can effectuate the reduction of nuclear radiation (gamma rays) substantially.
 
Through several years of intensive research, we have developed special internal coating systems for storage tanks of crude oil and all kinds of hydrocarbons, which provide a steady long-term protection against biocorrosion induced by SRB bacteria. These coating products prevent fatal pitting corrosion effectively. The unique mode of operation has been registered for international patent.

Tests & Certificates of independent institutes
 
·         Saudi Aramco Approvals APCS-2i, APCS-28 and APCS-117
·         10.000 hours salt spray test
·         thermo-shock-test (from 180°C to zero, 1.000 cycles)
·         resistance to acids, alkaline solutions, (pH 4-11), brine, oils, CO2, H2S, Hg, HgS at operating temperatures up to 110°C
·         resistance to E85 – ethyl alcohol, methanol/petrol, add-blue-solutions, RME
·         resistance against methyl alcohol
·         long-term resistance to deionized water (50°C)
·         >9.000 hours stability against “killer solution” – 98% H2SO4 / pure methyl alcohol / 3% NaCl-solution
(1/3, 1/3, 1/3 at 50°C)
·         cathodic disbondment test at 1,5 V (30 + 60 + 90 days at 60°C)
·         autoclave test with explosive decompression (natural gas, 100 bar, 100°C)
·         electrostatic dissipation capability < 106 Ω surface resistance