Abstract: A process of making an improved coating composition by combining alkyltrialkoxy silanes such as n-hexyltrimethoxysilane and methyltrimethoxysilane, in the presence of a silane catalyst having at least one amino-substituted functional group, at least one alkoxy-substituted group wherein the alkoxy-substituted group has at least 2 carbon atoms in the alkoxy group and optionally, an alkyl group, in an amount of water less than a stoichiometric amount of water. The combined monomer, catalyst and water are ultrasonically agitated to form an emulsion to hydrolyze the silanes to the extent permitted by the amount of water present and to form a moisture-curable coating composition.
Abstract: A blade for a cutting tool is provided having plane parallel faces with V-shaped upper and lower jaws, the jaws being separated at one plane parallel face by a web, the upper and lower jaws being shaped to receive and prevent lateral movement of an insert when retained by the jaws. The insert is shaped to cooperate with the blade. The insert has a cutting edge mounted on a cutting portion separated from the seat portion by a rebate.
July 11, 1986
Date of Patent:
May 26, 1987
General Electric Company
Gino Villa, John R. Johnson, Alan A. Hale
Abstract: An improved fabrication process for cobalt-enriched cemented carbide substrates is disclosed, in which an article is generally comprised of tungsten carbide, cobalt, and carbides, nitrides or carbonitrides of titanium, tantalum, and niobium, or mixtures thereof. In one aspect of the invention the article is contacted with nitrogen gas and then sintered in the absence of nitrogen gas to form a cobalt-enriched, B-1 phase-depleted zone. The article is then sintered in nitrogen gas to form a B-1 phase enriched layer on the surface of the article. Additionally, a metal oxide wear layer can be provided on the article.
Abstract: A metal cutting tool holder and adjusting mechanism having a rotational drive; a housing and cam mounted therein for rotation by the rotational drive; a cam follower mounted on the cam for axial motion; a wedge block axially slidably contained in the housing and adapted to be moved axially by the cam follower; the wedge block having a tapered transverse surface; and a tool holder block transversely slidably contained in the housing and adjacent the wedge block; the tool holder block having a tapered surface thereon slidably engaging the tapered surface of the wedge block but which is a reverse taper compared to the taper of the wedge block, so that the rotation of the motor drives the wedge block axially, and the tapered surfaces cause the tool holder block to move in a radial direction of the wedge block. In alternative embodiments, unidirectional controls cause the rotational drive to move the wedge block in the opposite direction. The controls include a comparative voltage electrical control system.
Abstract: A cutter insert is provided which is adapted to be supported on a flat platform on a cutter body and abutting edgewise against walls upstanding from said platform. The insert comprises a flat block of cutting material in the geometric shape of a parallelogram having a hole extending therethrough between the upper surface and the mounting surface of the block to receive a screw for securing the block to the platform. The upper surface of the block terminates at opposite ends in radii. The cutter insert further includes a rake face and a clearance face on opposite sides of the hole with said upper surface and said faces constituting cutting edges defined by the intersections of said faces and said upper surface, and an angular facet at diagonally opposed ends of said radii so as to form a chip splitter at the juncture of the cutting edge of the rake face and the cutting edge of the angular facet.
Abstract: In a high resolution optical electronic imaging system to detect defects and dimensional changes in articles of manufacture for example, metal cutting tool inserts, a convergent blade-shaped laser light beam emitted by a laser passes through a focusing optical system and is then directed to a revolving head which contains a mirror system. The focusing and mirror system scans the apex of the blade beam along the cutting edges of an insert so that edge defects and dimensional changes cause reflection and refraction of the laser beam. High resolution and contrast television camera and optic system receives the reflections and refractions and creates an image of the device with sharply contrasted defects.
Abstract: The present invention provides a drilling tool having a shank and at least one pair of identical cutting inserts, the inserts having an octagonal shape having alternate equal obtuse angles. Each of the inserts is arranged such that they each have a different radial displacement from the turning axis of the drill, the inner insert having a cutting path which overlaps the turning axis of the drill and the next outer insert having a cutting path which overlaps the cutting path of the inner insert. The cutting path of each insert is formed by the cutting edges either side of the obtuse angles of the insert.
Abstract: Cobalt cemented carbide cutting inserts are prepared for coating with a hard, wear-resistant coating by providing a cobalt enriched zone on a surface to be coated. Cobalt enrichment is effectuated by means of nitrogen gas contact with the carbide followed by a period of vacuum sintering during its sintering process of manufacture.
Abstract: Metal working tools or tool holders having a body with flat-faced surface containing insert pockets with at least two indexable inserts in each pocket are described. A tapered wedge block is positioned between each pair of inserts to wedge the inserts against the walls of the insert pocket and to separate the pair of inserts from each other. The pair of inserts have parallel cutting edges facing the leading wall. In one preferred embodiment, a pair of indexable cutter inserts are positioned in each pocket of a plural pocket face mill body. The inserts are positioned in leading and trailing positions with an intermediate wedge block to provide parallel cutting surfaces in the same direction.
Abstract: An indexable disposable insert is described having eight contiguous edge faces of equal length and two octagonal side faces having alternate corners with equal obtuse angles, cutting edges being formed at the junction of at least one of the octagonal side faces and each of the eight contiguous edge faces. Four identical pairs of cutting edges of equal length arranged about an obtuse angle are provided. The obtuse angles which may vary in the range 135.degree. to 170.degree. but are preferably 160.degree.. The insert can have chip breakers applied to it.
Abstract: An improved process for making an alkyl halide and organosiloxanes from a dialkyldialkoxysilane and a hydrogen halide is disclosed. Dialkyldialkoxysilane and hydrogen halide are simultaneously introduced at respective feed points into a column containing hydrogen halide under reflux in such proportions that the amount of hydrogen halide introduced into the column is at a stoichiometric excess over the dialkyldialkoxysilane. In preferred embodiments, the hydrogen halide is hydrogen chloride; the dialkyldialkoxysilane is dimethyldimethoxysilane; the alkyl halide is methyl chloride; and the organosiloxanes are predominantly of the cyclic type.
Abstract: A device and method are disclosed for supplying water or moisture to the surfaces of fuser members comprising water-degradable silicone rubbers. The water or moisture produces a degradation product of the silicone rubber which is a release material for electroscopic resin toners used in xerographic copiers.