Abstract: A cylinder block, such as that for an internal combustion engine, having at least one cylinder bore formed by a cylinder wall continuously comprised of a piston-sliding surface and at an end of the cylinder bore a recessed surface, wherein the entire area of the piston-sliding surface is plated without a step thereon, thereby improving durability of the plating coating, especially in an engine downsized while maintaining the displacement volume.

Abstract: A method and apparatus for treating with treating liquid the inside surfaces of cylinders of a work such as a V-shaped engine having cylinders with at least two different axial alignments, characterized in the steps of rotating the work in such a way that each cylinder in another axial alignment is aligned with a longitudinal passage-forming member provided in a workstation; and repeating the same operations on said cylinder at said workstation, thereby allowing for easy operations without interruption an apparatus for performing these steps is also disclosed.

Abstract: A method and apparatus for performing high speed chemical treatment of v type cylinder blocks. First the cylinder bores of one bank are treated. Then those of the other bank are treated. This permits a simple but compact treating plant.

Abstract: A method for continuously plating and finishing a part wherein a surface of the part is plated by a process that raises its temperature above atmospheric temperature and the part is then immediately force cooled to a temperature at which the plated surface may be properly machined. The part may be a cylinder block having at least one cylinder bore which is plated by flowing plating liquid across the surface of the cylinder bore and applying an electrical potential to cause plating material to be deposited. The cylinder block may be cooled by forced air cooling or liquid cooling to atmospheric temperature and then the plated cylinder bore may be immediately finish honed.

Abstract: A cylinder block, such as that for an internal combustion engine, having at least one cylinder bore formed by a cylinder wall continuously comprised of a piston-sliding surface and at an end of the cylinder bore a recessed surface, wherein the entire area of the piston-sliding surface is plated without a step thereon, thereby improving durability of the plating coating, especially in an engine downsized while maintaining the displacement volume.

Abstract: A surface treating device for applying a surface treatment through the use of a fluid to the cylinder bores of a wide variety of types of cylinder blocks. The apparatus includes a cylinder block mounting arrangement that has flow paths formed in it that are adapted to accommodate a wide variety of types of cylinder blocks and cylinder blocks having different cylinder numbers and different cylinder bore diameters. Improved flushing and fluid recovery systems are also disclosed.

Abstract: A high speed electrical plating apparatus employing a moving fluid and a tubular anode. The tubular anode contains pellets of the material being plated so as to make up for those utilized during the plating process. The electrodes are configured in such a way that the electrode need not be removed for servicing and also so that the pellets need not be serviced as frequently as with prior are constructions. In addition, the electrode is configured in such a way as to permit the pellets to shift as they dissolve without jamming and also to provide more uniform plating.

Abstract: A method for treating with treating liquid the inside surfaces of cylinders of a work such as a V-shaped engine having cylinders with at least two different axial alignments, characterized in the steps of rotating the work in such a way that each cylinder in another axial alignment is aligned with a longitudinal passage-forming member provided in a workstation; and repeating the same operations on said cylinder at said workstation, thereby allowing for easy operations without interruption.

Abstract: Sliding contact-making structures of an internal combustion engine, comprising (a) a cylinder unit having an inner plating coating containing a dispersoid substance; and (b) a piston provided with at least one piston ring, fitted into the inside of said cylinder unit in the axial direction so as to freely slide upon the inside surface thereof, wherein the thickness of the plating coating is tapered off in the axial direction at the edge of the plating coating on the side of a crankshaft, and/or the dispersoid content in said plating coating not in sliding contact with the piston ring, on the side of a crankshaft, is lower than that in sliding contact with the piston ring, thereby preventing peeling off of the plating coating and unnecessary abrasion of the piston as well as seizing, extending the life of the cylinder.

Abstract: Sliding contact-making structures of an internal combustion engine, comprising (a) a cylinder unit having an inner plating coating containing a dispersoid substance; and (b) a piston provided with at least one piston ring, fitted into the inside of said cylinder unit in the axial direction so as to freely slide upon the inside surface thereof, wherein the thickness of the plating coating is tapered off in the axial direction at the edge of the plating coating on the side of a crankshaft, and/or the dispersoid content in said plating coating not in sliding contact with the piston ring, on the side of a crankshaft, is lower than that in sliding contact with the piston ring, thereby preventing peeling off of the plating coating and unnecessary abrasion of the piston as well as seizing, extending the life of the cylinder.

Abstract: An improved surface treatment system, assembly, workstation, method, and liquid for plating and the like. The assembly includes a member defining a fluid passage within the interior surface of a workpiece which is connected to a treating liquid feed channel and a treating liquid discharge channel. Desirably, the assembly includes a sealing mechanism at least partially insertable into the opening of the sealing mechanism to avoid leakage.

Abstract: A high volume workpiece treating system includes horizontally arranged treating staions, including vertically arranged treating stations. A conveyor system moves workpieces sequentially and cyclically through the vertically arranged treating stations so that, while one treating station is loaded with workpieces and carrying out a treating procedure, the next station in the vertical group is being loaded with the next batch of workpieces. A single conveyor is arranged to supply a group of vertical treating stations with workpieces and to remove the workpieces from each station at the completion of the treating process. The conveyor and treating stations are arranged to handle sequential batches of workpieces with a minimum of idle time to achieve maximum efficiency. Each group of vertical treating stations is associated with a single piece of auxiliary equipment that controls the flow of treating solution through each of the treating cells of the group.

Abstract: An apparatus and process for chemically treating a surface of a workpiece with a liquid solution that produces an environmentally harmful gaseous byproduct includes a water spray system for contacting and reacting the gaseous byproduct at the location where it is produced during the chemical treating process. The reacted byproduct is then carried away in the water stream and with the chemical treating solution for safe disposal and recovery. Residual unreacted gaseous byproduct is chemically treated at a separate location within the same apparatus layout used to process the workpiece.