Riegler Main Catalog Compressed Air Technology and Pneumatics Page 929
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INFORMATION / TABLES Materials and their areas of application Materials and their areas of application Stainless steel Material Chemical designation AISI Areas of application 1.4301 X5CrNi18-10 AISI 304 Equipment and components of the chemical industry, textile industry, dyeworks, as well as in the photographic, paint, synthetic resin and rubber industries 1.4305 X10CrNiS18-9 AISI 303 Turned parts of the food and dairy industry, photographic, oil, soap, paper and textile industries 1.4401 X5CrNiMo17-12-2 AISI 316 Parts and equipment in the pulp, textile, oil and rayon industries, dairies, breweries. 1.4404 X2CrNiMo17-12-2 AISI 316 L Parts and equipment in the pulp, textile, oil and rayon industries, dairies, breweries. Use as cast material for investment casting fittings. 1.4408 G-X6CrNiMo18-10 1.4571 X6CrNiMoTi17-12-2 similar to AISI 316 Material for investment casting fittings AISI 316Ti Equipment and components of the chemical industry, textile industry, dyeworks, as well as in the photographic, paint, synthetic resin and rubber industries. Brass Material Chemical designation 2.0331 Areas of application • Sanitary appliances, screw connections, bolts, nuts • Drop forged components, stamped parts, gears, gear racks • Parts for security locks in vehicles, keys • Watch cases, watch circuit boards, barrels, date rings • Luster terminals • Perforated panels (for the paper industry) • Signs, metal letters, rivet parts CuZn39Pb2 Air treatment/filtering Air treatment Filtering The compressed air must always be clean so that it does not cause malfunction or does not damage the components. Dirt causes increased wear and negatively influences the service life of the pneumatic elements. Since the filter in the system forms a resistance to flow, for economical reasons the efficiency of the filter should be adjusted to the requirements of the application the air should be as clean as is necessary. This is specified in DIN ISO 8573-1:2010 into various cleanliness classes so that a uniform assessment of the degree of cleaning is possible. Depending on the requirements of the application, there are different demands on the compressed air quality. The quality classes should contain the following information in the order given: Quality classes: units for different impurities 1. Solid particles 2. Water (liquid/vapor) 3. Oil (liquid/vapor) 1. Solids Quality class 2. Water Maximum number of particles per m3 Particle size d [µm] 0,1 < d ≤ 0,5 0,5 < d ≤ 1,0 1,0 < d ≤ 5,0 1 ≤ 20.000 2 ≤ 400.000 3 ≤ 400 ≤ 10 ≤ 6.000 ≤ 100 ≤ 90.000 ≤ 1.000 4 ≤ 10.000 5 ≤ 100.000 7 8 9 X Pressure dew point [°C] max. Oil concentration (droplets, aerosols, vapors) [mg/m3] Determined by the equipment supplier or user with higher requirements than class 1. 0 6 Concentration Cp [mg/m3] 3. Oil Water concentration (liquid) Cw [g/m3] Not defined Not defined ≤ –70 ≤ 0,01 ≤ –40 ≤ 0,1 ≤ –20 ≤ +3 ≤ +10 5 < Cp ≤ 10 Not defined ≤1 ≤5 ≤ +7 0 < Cp ≤ 5 Not defined Not defined Not defined Cp > 10 Cw ≤ 0,5 Not defined Not defined 0,5 < Cw ≤ 5 5 < Cw ≤ 10 Cw > 10 >5 929
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