Title: Method and device for pickling the workpiece in manufacture of pipe
Application Number: 85105469 Application Date: 1985.07.08
Publication Number: 1006880 Publication Date: 1987.01.14
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B21B45/02,C23G1/08,C23G3/04
Applicant(s) Name: Lonza AG (CH) Gampel/Wallis Geschaftsleitung: Base Address:
Inventor(s) Name:
Attorney & Agent: QUAN GYONGLIU
Abstract:
     The invention relates to acid-washing with pickling agent, especially to a treatment for pickling workpiece heated to a rolling temperature of 1000-3000 dge.C in a rolled tube. A mixture obtained by uniformly mixing the pickling agent of predetermined quantity with a gas of predetermined quantity is coated, for example, onto the inner side of the tube blank of a seamless tube. The present invention also contains a set of apparatus composed of a storage vessel and a batcher both for said pickling agent, a pressure vessel with gas suppling means, a pickling agent entrance, an outlet for gas-pickling agent mixture, a transfer channel and a stock delivery device.
Time: 8
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