Abstract:
In einem Verfahren zur Erleichterung der Kaltverformung von Metallen wird ein Schmiermittelfilm aufgebracht, indem man zunächst auf die Metalloberflächen eine wäßrige Lösung oder Dispersion eines wasserlöslichen thermoplastischen Harzes mit einem Gehalt an Melamin!Cyanursäure- bzw. IsocyanursäureAddukt aufbringt und auftrocknet und anschließend mit Metallseife und/oder einem Schmieröl behandelt. Vorzugsweise enthält die wäßrige Lösung oder Dispersion Harz zu Addukt in einem Gewichtsverhältnis von 1 : 0,3 bis 1 : 2. Das Schichtgewicht des aufgetrockneten Harzfilmes sollte 0,3 bis 30 g/m 2 betragen.
Abstract:
A threaded joint for steel pipes having excellent galling resistance, rust preventing properties, and airtightness without using a compound grease comprises a pin and a box each having a threaded portion and an unthreaded metal-to-metal contact portion serving as contact surfaces. The contact surfaces of at least one of the pin and the box are coated with a multi-layered structure comprising, from the bottom, a first layer formed from a first metal or alloy, a second layer formed from a second metal or alloy which is softer than the first metal or alloy, and an uppermost layer of a solid lubricating coating comprising a lubricating powder in an organic or inorganic binder.
Abstract:
This invention provides a threaded connection for pipe or tube that has a non-sticky surface and that suppresses the occurrence of rust and exhibits excellent galling resistance and airtightness even in an extremely low temperature environment without using compound grease, a method of producing the same, and a composition for forming a solid lubricating coating on the threaded connection. A solid lubricating coating (24) formed from a composition containing a binder, a fluorine addition agent, a solid lubricant and a rust proof addition agent is coated as a topmost surface treatment coating on a contact surface of at least one of a pin and a box. Even when exposed to an extremely low temperature environment, the solid lubricating coating (24) can maintain adhesiveness and exhibit a lubricating function, can suppress the occurrence of galling of a threaded connection, and can also secure airtightness after fastening.
Abstract:
[Problem] To exchange the roller bearing that has been used in a scroll compressor mounted in an automobile with a m slide bearing. To provide a slide bearing having a performance that is at least equivalent to that of a roller bearing. [Solution] The slide bearing results from baking onto a back metal a sliding layer of 5-60 wt% graphite having an average diameter of 5-50 µm and a graphitization degree of at least 0.6, the remainder comprising a polyimide resin and/or a polyamide-imide resin. The form of the graphite has: (a) an average shape factor (YAVE) as defined of 1-4 for the particles excluding the minute particles that are no greater than 0.5 times the average diameter, and there being at least 70% by number of particles having a shape factor (Y) in the range of 1-1.5; or (b) graphite particles having a particle ratio of at least 0.5 being at least 50% of the total by number.
Abstract:
The present invention concerns a lubricating composition to be used in the casting of steel, in particular in continuous casting processes. In particular, the present invention concerns a lubricating composition for processes for producing steel in continuous casting comprising a dispersion of a lubricating powder in a liquid medium.
Abstract:
The present invention concerns a lubricating composition to be used in the casting of steel, in particular in continuous casting processes. In particular, the present invention concerns a lubricating composition for processes for producing steel in continuous casting comprising a dispersion of a lubricating powder in a liquid medium.