Abstract:
In einem Verfahren zur Erleichterung der Kaltverfr mung von Metallen wird ein Schmiermittelfilm aufgebracht, indem man zunächst auf die Metalloberflächen eine wäßrige Lösung oder Dispersion eines wasserlöslichen thermoplasti schen Harzes mit einem Gehalt an Melamin/Cyanursäure- bzw. IsocyanursäureAddukt aufbringt und auftrocknet und anschließend mit Metallseife und/oder einem Schmieröl behandelt. Vorzugsweise enthält die waßrige Lösung oder Dispersi on Harz zu Addukt in einem Gewichtsverhältnis von 1 : 0,3 bis 1 : 2. Das Schichtgewicht des aufgetrockneten Harzfilmes soll te 0,3 bis 30 g/m² betragen.
Abstract:
Hochtemperaturschmierstoff für die spanlose Heissumformung von Metallen, der vorzugsweise Form einer in wässriger Dispersion angewendet wird. Um einerseits ein Koagulieren der Feststoffe in der wässrigen Dispersion zu vermeiden, und andererseits einen temperaturbeständigen gleichmässigen Schmierfilm zu erhalten, enthält der Hochtemperaturschmierstoff neben einem Festschmierstoff einem rückstandsfrei sich zersetzenden organischen Produkt zusätzlich einen anorganischen Zusatz aus Polyphosphat, einer Borverbindung und einem Alkalisilikat, sowie ein organisches Stabilisierungsmittel.
Abstract:
An image bearing member protecting agent including: a hydrophobic organic compound (A); an inorganic lubricant (B); and inorganic fine particles (C), wherein each of the inorganic fine particles (C) has a specific surface area of 2.0 m 2 /g to 6.5 m 2 /g.
Abstract:
A threaded joint for steel pipe formed of a pin and a box having a contact surface including threaded parts and a non-threaded metal contact part and capable of preventing a seizure by repeated tightening and loosening operations without applying compound grease thereto, wherein a solid lubricating film including lubricating powder such as molybdenum disulfide and resin binder is formed on the contact surface of at least one of the pin and box by drying the film by a primary heating in the temperature range of 70 to 150 DEG C and by a secondary heating in the temperature range of more than 150 to 380 DEG C, the solid lubricating film thus obtained has a Rockwell M scale hardness of 70 to 140, an adhesive strength of 500 N/m or higher obtained by the SAICAS method (surface-boundary cutting method), and excellent seizure resistance and airtightness even in a high temperature well environment, and, when ultraviolet ray shielding particles such as titanium oxide are contained in the solid lubricating film, the rust-proofness of the threaded joint is increased.
Abstract:
The present invention provides a new composite material comprising a porous matrix made of metal, metal alloy or semiconducting material and hollow fullerene-like nanoparticles of a metal chalcogenide compound or mixture of such compounds. The composite material is characterized by having a porosity between about 10% and about 40%. The amount of the hallow nanoparticles in the composite material is 1-20 wt. %.
Abstract:
A method for treatment of bacterial infections with rifalazil administered once-weekly, or twice-weekly. A method for treatment of tuberculosis caused by Mycobacterium tuberculosis, infections caused by Mycobacterium avium complex, infections caused by Chlamydia pneumoniae and infections caused by Helicobacter pylori by administering to a patient suffering from the bacterial infection 1-100 mg of rifalazil once or twice a week. In this dose regimen, the treatment is fast, efficacious and eliminates undesirable secondary symptoms observed with daily doses of 1-50 mg of rifalazil.
Abstract:
An aqueous lubricant for use in plastic working of a metallic material which comprises (A) a water soluble inorganic salt and (B) a wax, wherein the components are dissolved or dispersed in water, and wherein a solid concentration ratio (weight ratio) (B)/(A) is 0. 3∼1.5. and a method for producing a lubricative film, characterized in that a lubricative film is produced by applying the aqueous lubricant, preferably in a dried weight of 0.5∼40g/m 2 , on the surface of a metallic material, providing no chemical conversion layer thereon, followed by drying. The aqueous lubricant preferably further comprises (C) a metal salt of a fatty acid in a solid concentration ratio (C) /(A) of 0.01∼0.4. The water soluble inorganic salt (A) is preferably selected from among a sulfate, a silicate, a borate, a molybdate and a tungstate. The wax is preferably a synthetic wax which is dispersed in water and has a melting point of 70∼150°C. The metal salt of a fatty acid (C) is preferably obtained through reacting a saturated fatty acid having 12∼26 carbon atoms with a metal selected from among zinc, calcium, barium, aluminium, magnesium and lithium. The aqueous lubricant can be used for imparting excellent lubricity with ease to the surface of metal having no chemical conversion layer formed thereon.
Abstract:
The present invention provides a new composite material comprising a porous matrix made of metal, metal alloy or semiconducting material and hollow fullerene-like nanoparticles of a metal chalcogenide compound or mixture of such compounds. The composite material is characterized by having a porosity between about 10% and about 40%. The amount of the hallow nanoparticles in the composite material is 1-20 wt. %.
Abstract:
A lubricant for use in hot rolling of high chromium stainless steel, the lubricant being continuously supplied to surfaces of hot rolling rolls in contact with the steel being rolled at least during hot rolling of the stainless steel, which lubricant comprises a viscous aqueous solution of water soluble high molecular weight thickener and from 10 to 40% by weight of iron hydroxide powder dispersed in the aqueous solution, said iron hydroxide powder having a median particle size of from not less than 0.1 mu m to less than 1 mu m and said lubricant having an apparent viscosity within the range of from 1,000 to 50,000 cP.
Abstract:
A method for treatment of bacterial infections with rifalazil administered once-weekly, or twice-weekly. A method for treatment of tuberculosis caused by Mycobacterium tuberculosis, infections caused by Mycobacterium avium complex, infections caused by Chlamydia pneumoniae and infections caused by Helicobacter pylori by administering to a patient suffering from the bacterial infection 1-100 mg of rifalazil once or twice a week. In this dose regimen, the treatment is fast, efficacious and eliminates undesirable secondary symptoms observed with daily doses of 1-50 mg of rifalazil.