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				Home > Produkte > Produktübersicht > Härteöle / Abschreckmedien > THERMISOL 251 >
	Produktübersicht Motoren- und Getriebeöle Schal- und Trennmittel Kühlschmierstoffe Umformschmierstoffe Korrosionsschutzmittel Härteöle / Abschreckmedien THERMISOL QH 40 THERMISOL QH 120 THERMISOL QH 10 THERMISOL BMP THERMISOL 251 Schmierfette Industrieöle Biol. schn. abbaub. Schmierstoffe Sonst. Produkte / Servicebereiche Berichte Publikationen Messen & Termine FUCHS für REACH - Das neue europäische Chemikalienrecht EURO PI
				THERMISOL 251 Polymer Quenching Oil Diagramm Heat Treatment of Steels and Non-ferrous Alloys. THERMISOL 251 was developed with the objective of having one product to satisfy various quenching speeds. This is achieved by adjusting the application concentration. Low concentrations offer more rapid cooling than water alone while higher concentrations offer quenching speeds similar to oils. The most important feature of this water-based Quenching Oil is minimal warping. Benefits of using THERMISOL 251 Allows quenching speed to be adjusted Ensures consistent hardness  Non-flammable Components remain clean after quenching High performance without the danger of overheating Easily washed-off workshop floors etc. Typical Physical & Chemical Characteristics: Properties Unit Value Norm Test Density at 15 °C kg/l 1.088 ASTM D 1298 Colour   5.0 ASTM D 1500 Viscosity at 20 °C mm²/s 562 ASTM D 445 Viscosity at 40 °C mm²/s 324 ASTM D 445 pH-value of the solution DIN water 10%   8.3 DIN 51 369 Reserve Alkalinity up to pH = 7 ml 0,1 n HCl 25 FLP* Refractometer / Fluid Tester factor   2.05 FLP* FLP*= FUCHS Laboratory Procedure Application: THERMISOL 251 should be diluted with water to concentrations ranging from 2 to 25 %. Depending on the process and the materials involved, concentrations of up to 50 % are possible. Recommended concentrations are:  Induction hardening 2 to 8 % Hardening structural steels 8 to 15 % Hardening alloyed steels 10 to 25 % Special alloys 20 to 30 % Nonferrous metals and their alloys 30 to 45 % Quenching Oil mixing: Tanks which have previously contained quenching oils should be thoroughly cleaned, proceeding with scouring and rinsing to avoid excessive contamination. Fill the tank with 3 parts of water if the concentration is 25 % and immediately add 1 part THERMISOL 251. Stir the solution, check the concentration and adjust by adding small amounts of product or water. For optimum mixing, heat the solution to 40 - 60 °C and stir thoroughly.Quenching operations can now begin. Caution! Clean parts that have been heated in bath salts prior to quenching.  Do not quench tool steels.  The temperature of the bath should not exceed 65 °C.  If complex-shaped parts with difficult cooling characteristics are being quenched, adjust the THERMISOL 251 concentration accordingly. THERMISOL 251 bath (concentration) control: Hand refractometer.Since the refraction index of solution varies with concentration, this is a useful means of measurement.Filter a solution sample and place a drop on the lens, close the cover and look through the eye-piece with the instrument pointing at a light. Having determined the reading which corresponds to the shaded area observed in the eye piece, multiply by a factor of 2.05 and this will give the direct concentration of the bath, e.g. Refractometer reading = 7; Calculation: 2.05 x 7 = 14.35 % of THERMISOL 251. Another simple procedure consists of heating a defined quantity of the Quenching Oil in a graduated test tube. A film will then separate and float to the top of the solution. This film is then measured and compared to the results of similar tests on standard solutions. Use ASTM D 445 to determine kinematic viscosity and thus concentration at a constant temperature. Viscosity /Concentration values (at 40 °C): Concentration, % Viscosity, mm²/s 2 0.75 5 0.90 8 1.20 10 1.45 12 1.70 15 2.15 18 2.75 20 3.30 22 3.90 25 4.80 30 6.70 35 9.90 Further information: Handling: No special precautions need to be taken when handling THERMISOL 251. It is advisable to test bacteria levels regularly because microbiological growth in aqueous solutions has a direct bearing on corrosion problems.   Haftungsausschluß	Aktuell   Pressemitteilung vom 9.12.2008   Dreivierteljahresbericht und         drittes Quartal 2008   Aktienrückkaufprogramm   Neueste Researchberichte   Neueste Empfehlungen   Finanznachrichten Anpfiff ins Leben - Das FUCHS Paten-Team Die FUCHS PETROLUB AG unterstützt Jugendmannschaften des SV Waldhof. Weitere Informationen finden Sie hier:   Das FUCHS Paten-Team S-Box Metropolregion Rhein-Neckar Performance-Index Hier finden Sie den Link    S-Box Metropolregion Rhein-Neckar          Performance-Index Unsere Filmecke   Der gläserne Stoßdämpfer         Bericht des Campus TV im         Rhein-Neckar-Fernsehen         Film          Film (Windows Media Player)            FUCHS Hauptversammlung         Film HV (Windows Media Player)         Film HV (Apple Quick Time)        Termine  Finanzkalender 27.3.2009 Bilanzpressekonferenz, Mannheim  Terminerinnerung Motorsport FUCHS SHOP Der FUCHS Shop ist vom 22.12.2008 - 5.1.2009 geschlossen. Wir haben ab 7.1.2009 wieder geöffnet: Montag bis Freitag jeweils 11.00 - 12.30 Uhr und 13.30 - 15.00 Uhr Für gewerbliche Kunden in Deutschland