摘要:
A plating method for pre-plating or plating a cylinder inner peripheral surface to be treated of a cylinder block by introducing treatment liquid to the cylinder inner peripheral surface by using a plating apparatus provided with a sealing jig having a sealing member and an electrode to which the seal jig is mounted includes the steps, which are performed successively: sealing the cylinder inner peripheral surface by bringing the sealing jig into contact with the cylinder inner peripheral surface; introducing the treatment liquid to the cylinder inner peripheral surface; and treating the cylinder inner peripheral surface by applying predetermined charge to the electrode of the plating apparatus and the cylinder block to thereby perform pre-plating or plating process in a state that a liquid to be treated fills a space including the cylinder inner peripheral surface. In the method, the treatment liquid introducing step is performed after confirmation of sealing by the sealing step.
摘要:
An oil chamber of an oil pan 6 divided into a main oil chamber that collects oil from a crankcase and an auxiliary oil chamber that is positioned adjacent to the main oil chamber. The main oil chamber is connected with an oil supply pump that supplies oil to lubricated sections of an engine and the auxiliary oil chamber is connected with an oil collecting pump that returns oil to the main oil chamber.
摘要:
A method of plating an aluminum alloy, of which the steps are small in number and the productivity is improved as compared with conventional zincate conversion or anodic oxidation methods and which attains a decrease in cost and obviates the use of mixed acids, and a plated aluminum alloy of which the coating has excellent adhesion, the method comprising the steps of carrying out anodic etching of a silicon-containing aluminum alloy to protrude silicon from the surface of the aluminum alloy, optionally carrying out anodic oxidation of the aluminum alloy on its surface from which the silicon is protruded, and plating the aluminum alloy, and the plated aluminum alloy containing silicon in a state where the silicon bridges the aluminum alloy and the plating layer.
摘要:
A method of producing an open cell rigid polyurethane foam which comprises reacting a polymethylene polyphenylisocyanate prepolymer with a polyol at an NCO/OH equivalent ratio of 1.3 to 3.0 by use of a blowing agent substantially comprising water in the presence of a catalyst, a foam stabilizer and a cell opening agent.
摘要:
A plating pretreatment apparatus for a multi-cylinder block includes a plurality of cylinders that performs a plating pretreatment of a cylinder inner wall surface of each of the cylinders using an electrode disposed so as to oppose to the cylinder inner wall surface by sealing one end of the cylinder inner wall surface and introducing a treatment liquid to the cylinder inner wall surface. In such plating pretreatment apparatus, at least one of a power supply device that supplies electricity to the cylinder block and the electrode and a liquid feed pump that feeds the treatment liquid into a gap between the cylinder inner wall surface and the electrode is provided for each of the cylinders.
摘要:
A cylinder block plate processing apparatus in which one end side of an inner peripheral surface of a cylinder of a cylinder block is sealed to circulate a process liquid to perform pre-plating or plating processing of the cylinder inner peripheral surface. The apparatus includes: an apparatus body having a workpiece mount table on which the cylinder block is placed; a workpiece holding tool that is provided on the workpiece mount table so as to be vertically movable; an electrode support member including an electrode cylinder mounted to the apparatus body; a processing solution supply member that supplies a processing solution to the electrode support member; an electrode operated by the electrode cylinder; a sealing jig provided to one end of the electrode; a driving mechanism that drives the sealing jig; and a control circuit that controls operations of the processing solution supply member and the driving mechanism.
摘要:
A sealing jig comes into contact with a cylinder inner peripheral surface as a surface to be processed of a cylinder block and seals the cylinder inner peripheral surface in introducing treatment liquid to the cylinder inner peripheral surface. The sealing jig includes: a sealing member made of an expandable material and having a ring-buoy shape; a lower plate for supporting a lower side of the sealing member; and a seal base disposed so as to face the lower plate and to support an upper side of the sealing member. The sealing member is regulated by the lower plate and the seal base and expanded only in a radial direction to come into contact with the cylinder inner peripheral surface when air is introduced inward.
摘要:
The present invention provides an apparatus for plating pretreatment of a cylinder block that includes an electrode performing a plating pretreatment of the cylinder inner wall surface. A gap flow channel communicates with an in-electrode flow channel at a position closest to a seal jig, the gap flow channel being adapted to introduce a treatment liquid to the cylinder inner wall surface, the in-electrode flow channel being adapted to receive the treatment liquid having passed through a communicating hole. The present invention is provided a method for pretreating before plating a cylinder block including disposing an electrode to face the cylinder inner wall surface so as to form a gap flow channel, and introducing a treatment liquid to the gap flow channel thereby flowing through the treatment liquid toward a seal jig and then into an in-electrode flow channel through a communicating hole.
摘要:
An electrode mounting structure of a surface treatment apparatus in which a metal electrode is disposed so as to oppose to an inner-peripheral surface of a cylinder, the electrode and the cylinder are energized in a state where treatment liquid is interposed between the electrode and the cylinder inner-peripheral surface so as to perform pre-plating or plating to the cylinder inner-peripheral surface, and the metal electrode is detachably attached to a metal electrode holder member. The structure includes a resin coupler having a threaded portion engaged with a threaded portion formed on the electrode holder member.
摘要:
A plating processing line or system includes a plurality of surface processing apparatus including a surface processing apparatus for processing a surface of an object to be treated by introducing a treatment liquid to the surface, and a conveyer unit for conveying the object to be treated, which is disposed between the respective surface processing apparatus linearly or in a curved manner. Each of the surface processing apparatus includes a positioning unit for positioning the object to be treated, which has been conveyed by the conveyer unit to a predetermined position, at which the object is subjected to a pre-plating process or a plating process as a surface processing.