Surface treating method, and treating member therefor
AssigneeMazda Motor Corporation
InventorsSeiji Nomura, Toshiyuki Gendou
Life of this patent
Estimating the term…
Abstract
Via a first path (P1) which extends for continuous treatment from one longitudinal end to the other of a cylinder head (H) passing between pairs of exhaust ports (15) and pairs of intake ports (14) opposed to each other with respect to one cylinder and which terminates in a tension bolt hole (21), and via second paths (P2P5) which, after treatment by this first path (P1), extend for successive treatment from cylinders adjacent the terminal point of the first path (P1) and between a pair of exhaust ports (15) and a pair of intake ports (14) opposed to each other and which terminate in tension bolt holes (21), the surface of the cylinder head (H) is stirred for refining without melting it by the heat from a rotating tool.
Claims9
A surface treating method in which a surface of a cast having concave portions is stirred for a refining by a rotating tool having a protrusion, the rotating tool being pressed with respect to the surface of the cast, without melting the cast by a heat from the rotating tool, the method comprising:
- pressing and moving the rotating tool, which is rotating, along a surface treating path in a region which is in the closest vicinity of one of the concave portions, so as to have a material between the one concave portion and the protrusion of the rotating tool flow in the same direction as a travel of the rotating tool;
- and
- treating the surface of the cast so as to have a treated region between the one concave portion and the protrusion of the rotating tool be smaller than a treated region in which a material thereof flows in the opposite direction of the travel of the rotating tool.
A method of treating a surface of a cast having concave portions using a rotating tool having a protrusion, without melting the cast by a heat from the rotating tool, the method comprising:
- positioning the rotating tool at an area between the concave portions;
- and
- stirring the surface of the cast including rotating, pressing and moving the rotating tool along a surface treating path to treat first and second regions of the area, wherein
- the positioning of the rotating tool includes providing the protrusion of the rotating tool between the first and second regions so as to have the first region be in the closest vicinity of one of the concave portions, and
- the treating of the first and second regions includes rotating, pressing and moving the rotating tool so as to have a material of the first region flow in the same direction as a travel of the rotating tool while a material of the second region flow in the opposite direction of the travel, and to have the first treated region be smaller than the second treated region.
Dependencies are inferred from the claim text.