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AssigneeKobe Steel, Ltd.
InventorsMasamitu Tamura, Yukio Yasuhara, Shigeharu Nakamura, Masaru Sakai, Kazuo Akagi, Ryohei Kazihata, Norio Satohara
Estimating the term…
A process and an apparatus within which there is provided at least one, or a plurality of tanks in series relation, depending upon the type of member being treated, each tank having one or more openings within its walls, respectively, which are provided in alignment with each other. With this apparatus, one or more metal members such as for example, a bar, rod, pipe, or tube, is rotatably fed through the aforenoted openings into the tank or tanks, thereby enabling a continuous automatic-etching process of the outer surface of the metal members to be performed. As an alternative, there is provided within each tank, a triple walled cylindrical body or solution flow guide, whereby a solution for etching may uniformly flow in the direction of the metal member being conducted through the tank or tanks, and along the outer surface thereof, so that a desired surface condition of the bar, rod, pipe or tube may be obtained in an efficient manner.
An etching process for use in chemically etching the outer surface of a metal member in a plurality of tanks including inlet and outlet openings in the front and rear opposed walls thereof, comprising the steps of:
An etching process for use in chemically etching the outer surface of a metal member in a plurality of tanks including inlet and outlet openings in the front and rear opposed walls thereof, comprising the steps of:
Dependencies are inferred from the claim text.