| 摘要 |
1,151,118. Making wire. J. C. SODING & HALBACH. 12 Oct., 1967 [13 Oct., 1 968- 14 Sept., 1967], No. 46669/67. Heading B3A. [Also in Division C7] In a process of continuously annealing and pickling metal ribbon or wire such as steel, in the embodiment shown in Fig. 1, the wire 1 is fed through a first electrolyte container 3, the centre chamber 4 of which contains an electrode 14 and which is supplied with electrolyte from tank 9, then through annealing zone 15 and into pickling chamber 17 of second electrolyte container 18 which contains pickling spray 16 and a centre chamber 20 containing electrode 31 and which is supplied with electrolyte from tank 22. The electrodes 14 and 31 supply the voltage necessary to heat the wire 1 and the pickling liquid used in spray 16 is the same as the electrolyte in chamber 20. The annealed and pickled wire may be washed, coated with calcium carbonate in soap, dried and then wound on reel 32. In a further embodiment (Fig. 2, not shown) the wire is fed to the second container 18 via a ceramic pipe, the spray 16 is connected by a plastics tube to a tubular electrode. A voltage is also applied to the spray 16 so as to control the temperature of the pickling liquid. The materials treated are high-speed steels, 18-8 Cr/Ni steels with or without Mo, electric heating wire containing 33%, 63% and 80% Ni with 20% Cr; Cr-Al wire containing 20% Cr and 5% Al. The pickling solutions and electrolytes used are 5% HCl with or without 15% HNO 3 and 5% HF or 15% HNO 3 and 5% HF alone. Alternatively, aqueous NaOH or KOH may be used to form an insulating oxide coating. |
