defem: Mesh Trays & CombiRacks

Defemmesh trays 81 Surface treatments Electro-galvanized Products are manufactured in accordance with DIN 50961/ISO 2081. Such products are intended for use only in warm, dry areas with negligible pollutant levels. Pre-galvanized Products are manufactured from Z 275 pre-galvanized sheet steel in accordance with SS-EN 10327:2004. Under normal conditions, surface sections created during cutting and drilling will repair themselves, providing superb anti-corrosion protection. Hot-dip galvanized Schneider-electric has one of the most modern hot-dip galvanization plants in the Nordic countries. The hot- dip process is continuous, guaranteeing a high and even quality. The manufactured products are hot-dip galvanized in accordance with EN-ISO 1461:2009 whilst nuts and bolts are hot-dip galvanized in accor- dance with SS-EN ISO 10684:2004. This form of galvanization affords very good value-for-money anti-corrosion protection in atmospheres with a pH value of between 6 and 13. However, in acidic envi- ronments where pH levels fall below 6 and in alkaline environments where the pH value exceeds 13, the protective zinc layer breaks down relatively quickly. Stainless steel Products manufactured in accordance with SS 2333/ AISI 304 or SS 2348/AISI 316L are designed for use in highly aggressive environments, either indoors or out- doors, on industrial sites where there are high levels of potent airborne pollution such as in certain chemical industries, cellulose-related industries, refineries or artificial fertilizer factories, high humidity tunnels, etc. Stainless steel products are also ideal for use in environments where special hygiene requirements are in force, such as dairies, abattoirs, other food industries and pharmaceutical factories. Stainless steel AISI 304L or AISI 316L The deciding factor in choosing between stainless steel AISI 304L or AISI 316L is the aggressiveness of the en- vironment in which it is to be used, and for this atmos- pheric chlorine content plays a significant role. Envi- ronments with a high chlorine content - coastal areas being a prime example - are aggressive and usually require the use of AISI 316L materials. When asses- sing the needs of factories, consideration should be given to the materials previously used to suspend equipment such as pipe tubing, and from this deter- mine whether stainless steel AISI 304L or AISI 316L material is required. Factors to consider when installing Stainless Steel Mesh trays 1. Transport/handling Make sure that no iron objects come into contact with the stainless steel products. 2. Storing Never store stainless steel products close to where iron products are machined, for example close to cutting and grinding operations. 3. Welding Welding during installation should be avoided where possible. If welding must be performed, make sure that only methods suitable for stainless steel are used. 4. Tools When cutting or grinding, always use cutting wheels and grinding tools which are free from iron. Do not use tools that have been previously used for cutting or grinding products containing iron. When drilling, use an HSS-drill. To maximize the useful life of the drill, employ a cooling fluid during drilling. When installing, conven- tional assembly tools can be used. However, when using a nut tightener, ensure that the thread is first lubricated to prevent jamming. Never mix untreated or galvanized products with stainless steel. 5. Measures If a blue annealing appears when cutting, grinding or drilling, remove it with pickling paste, making sure that the paste is then carefully washed away with water. If selective corrosion appears it can be removed by: a) Washing away with water (high-pressure if possible). b) Polishing with a cleaning cloth or a fine emery paper (wet or dry) and washing with water. c) Grinding with a fine-grained wheel and washing with water. d) Pickling with pickling paste, making sure that the pickling paste is then carefully washed away with water. 6. When using pickling paste or similar products, al- ways study the safety code for the product prior to use. Defem Mesh Trays - Technical and material data Steel wire Specification: C9D acc. to EN 10016-2 AISI 316L acc. to EN 10088-3 Density: 7.7-7.85 kg/m 3 Surface • Electro-galvanized (>8 μm): EN ISO2081 treatment: • Hot-dip galvanised (>70 μm): EN ISO 1461 • Passivated (AISI 316L) Steel sheet Specification: S235 acc. to EN 10025-2 AISI 316L acc. to EN ISO10088-2 Density: 7.7-7.85 kg/m 3 Surface • Electro-galvanized (>8 μm): EN ISO 2081 treatment: • Hot-dip galvanised (55-70μm): EN ISO 1461 • Passivated (Stainless steel) Resistance to impact 20 J (IEC 61537) Temperature range From –20°C to +90°C