Abstract:
A carbon hardened surface is produced in a metal workpiece without forming carbide precipitates by carburizing the workpiece at high temperature carburization conditions, rapidly quenching the workpiece, and then carburizing the workpiece under low temperature carburization conditions.
Abstract:
Apparatus and method for mechanically attached connections of conduits may include a conduit gripping member (34), a drive member (36), and a seal member (48), the drive member (36) causing axial movement of the conduit gripping member (34) to indent into an outer surface of the conduit when the assembly is pulled-up, the drive member (36) causing the seal member (48) to form a zero clearance seal at a location that is axially spaced from the conduit gripping member (34). The zero clearance seal may comprise a face seal arrangement including a gasket (48), and the conduit gripping member (34) may be a ferrule, ring or other device that can grip and optionally seal against the conduit outer surface. The assembly may include an optional sensing function for detecting or sensing a characteristic or condition of an assembly component or the fluid or both.
Abstract:
Low temperature carburization of stainless steel using acetylene as the carburizing specie is carried out under soft vacuum conditions in the presence of hydrogen or other companion gas. As a result, formation of soot and the undesirable thermal oxide film that normally occurs during low temperature carburization is eliminated virtually completely.
Abstract:
Apparatus and method for mechanically attached connections of conduits may include a conduit gripping member (34), a drive member (36), and a seal member (48), the drive member causing axial movement of the conduit gripping member to indent into an outer surface of the conduit when the assembly is pulled-up, the drive member causing the seal member to form a zero clearance seal at a location that is axially spaced from the conduit gripping member. The zero clearance seal may comprise a face seal arrangement including a gasket (48), and the conduit gripping member may be a ferrule, ring or other device that can grip and optionally seal against the conduit outer surface. The assembly may include a sensing function for detecting or sensing a characteristic or condition of an assembly component or the fluid or both, hi one embodiment, a body coupling member has a two piece construction of a main body and a conduit socket insert. A flared fitting embodiment is also provided. Sensing functions are also incorporated into fittings other than just zero clearance fittings.
Abstract:
Low temperature carburization of a workpiece surface is accomplished faster by impregnating the surface with a diffusion promoter prior to or during the low temperature carburization process.
Abstract:
Mechanically attached connections for conduits may include a conduit gripping member and first and second connection members. The first and second connection members may be, for example, a nut member and a body member where the connection members cause axial movement of the conduit gripping member to grip and seal the conduit when the assembly is pulled-up. The mechanically attached connection may include a sensing function for detecting or sensing a condition or characteristic of at least one of the following: the mechanically attached connection, one or more of the connection members, the fluid contained by the mechanically attached connection, or a combination thereof. The sensing function may be, for example, a sensor that is integrated with at least one of the nut member and the body member.
Abstract:
Low temperature carburization of stainless steel using acetylene as the carburizing specie is carried out under soft vacuum conditions in the presence of hydrogen or other companion gas. As a result, formation of soot and the undesirable thermal oxide film that normally occurs during low temperature carburization is eliminated virtually completely.