Abstract: In an electroplating method, a plating target article (X) disposed so as to be in contact with plating bath (14) is set as a cathode while a metal member disposed so as to be in contact with the plating bath (14) is set as an anode, and a voltage is applied between the cathode and the anode while vibrational flow is induced by vibrating vibrational vanes (16f) which are fixed in multi-stage style to a vibrating rod (16e) vibrating in the plating bath (14) interlockingly with vibration generating means (16d). Plating current flowing from the anode through the plating bath (14) to the cathode is pulsed and alternately set to one of a first state where the plating current keeps a first value I1 for a first time T1 and a second state where the plating current keeps a second value I2 having the same polarity as the first value I1 for a second time T2, the first value I1 being five or more times larger than the second value I2, and the first time T1 being three or more times longer than the second time T2.

Abstract: An anodizing method of a metal body which includes an anodizing treatment process performed while vibrationally fluidly stirring and aerating a treatment bath in which the metal body is vibrated and swung and an apparatus for performing the same.

Abstract: A vibrationally fluidly stirring apparatus includes tank (13) to be charged with liquid (LIQ) to be stirred; a vibration generating portion containing vibration motor (14); vibration absorbing member (3) disposed between the tank (13) and the vibration generating portion; a vibrating bar (7) operationally connected to the vibration generating portion and extended in the tank (13); and a vibration vane (10) attached to the vibrating bar (7), the vibration absorbing member (3) is a laminate of upper metal plate (1), rubber plate (2) and lower metal plate (1′).

Abstract: In a plating method for successively treating a plating target from a pre-treatment step until a plating treatment, (A) a vibrationally stirring apparatus for a treatment bath, (B) an aeration apparatus for the treatment bath, (C) an apparatus for swinging an electrode bar for suspending the plating target thereon, and (D) an apparatus for applying vibration to the electrode bar, are operated in a cleaning tank and at least one of an electroless plating tank and an electroplating tank used as a treatment tank in the pre-treatment step and the plating step.

Abstract: An apparatus for use in at least one of a plating and a pretreatment for plating, comprising:(A) a vibrationally stirring apparatus for a treatment bath, the vibrationally stirring apparatus (A) being provided with vibration generating means having an vibration motor, and vibrationally stirring means for vibrating a vibration vane at an amplitude of 0.5 to 3.0 mm and at a vibrational frequency of 200 to 800 times per minute, the vibration vane being fixed in one stage or in multistage to a vibrating bar which vibrates in the treatment bath interlockingly with the vibration generating means;(B) an aeration apparatus for the treatment bath;(C) an apparatus for swinging an electrode bar for suspending the plating target thereon; and(D) an apparatus for applying vibration to the electrode bar.

Abstract: An electroless nickel plating waste liquid (4) accommodated in an electrolytic oxidation tank (2) is treated by electrolytic oxidation with vibrating and fluidizing the waste liquid by means of an oscillating stirrer (10) to recover nickel by the electrolytic oxidation as well as recover the waste liquid in which an active component for fertilizer including phosphorus remains as a fertilizer solution. When the waste liquid is neutralized by a neutralizer including an active component for fertilizer such as potassium, nitrogen, etc., the fertilizer solution having higher content of the active component is obtained. The oscillating stirrer comprises an oscillation generator including a 25 to 500 Hz oscillating motor (18), an oscillating rod (22) connected to the oscillation generator, and multistage oscillating vanes (38) attached to the oscillating rod, and the oscillating vane is such that a tip end portion of the vane is fluttered when an oscillation is transmitted from the oscillating rod to the vane.

Abstract: An apparatus for mixing and dispersing a fluid in a container having an oscillation shaft for transmitting the oscillation generated by an oscillation generating device in the axial direction thereof, oscillation vanes adapted to be vibrated by the oscillation of the oscillation shaft is fixed, and an oscillation absorption mechanism interposed between the oscillation generating device and the container.