| 单词 |
pilger |
| 释义 |
▪ I. ˈpilger, n.1 dial.
[perh. f. pile n.1 + gar, gare n.1: cf. elger.]
A fish- or eel-spear.
a1825Forby Voc. E. Anglia, Pilger, a fish-spear. 1877Holderness Gloss., Pilger, a three-pronged eel-spear. 1899Westm. Gaz. 22 Feb. 5/2 He was using a pilger, and brought up an eel 6lb. 2oz., and measuring 4ft. 4in.
▪ II. pilger, n.2 and v. Metallurgy.|ˈpɪlgə(r)|
Also Pilger.
[a. G. pilger pilgrim, in allusion to the alternate feeding in and partial withdrawal of the billet during the operation of the mill, which is said to resemble the steps of pilgrims approaching a shrine.]
Used attrib. (in pilger mill, pilger process, pilger roll, etc.) with reference to a rolling mill for reducing the outside diameter of a tube without changing the inside diameter, its two rollers each having a semicircular groove of decreasing diameter passing round the circumference, so that in conjunction they form a circular hole through which the tube can be forced on cylindrical mandrel and which decreases gradually and increases suddenly in size during each revolution of the rollers.
1902Proc. S. Wales Inst. Engineers XXII. 351 One of the most interesting..devices is the machine named the Pilger carriage, to which the hollow billet is attached previous to being operated upon in the pilgrim mill. 1905Min. Proc. Inst. Civil Engineers CLIX. 335 A tube produced by means of pilger-rolls frequently possesses a rippled or undulating surface. 1922Iron & Coal Trades Rev. 9 June 849/1 The Pilger mill consists of two..‘cam’ rolls, fixed in housings, and driven through two-high pinions in practically the same manner as a two-high merchant bar mill, except that the Pilger rolls rotate in an opposite direction. 1954A. R. Bailey Text-bk. Metallurgy xii. 419 (caption) Diagram showing the step-by-step method of rolling in the Pilger process. 1968R. N. Parkins Mech. Treatm. Metals iv. 263 In the Pilger mill, the tube is deformed over a mandrel between rolls that work the tube during only part of each revolution. 1973[see below].
So ˈpilger v. trans., to make in a pilger mill; ˈpilgering vbl. n.
1902Proc. S. Wales Inst. Engineers XXII. 350 Pilgering or pilgrim mill. This mill derives its name from its peculiar intermittent action upon the hollow billet. 1923Harbord & Hall Metallurgy of Steel (ed. 7) II. xxiii. 467 Tubes are not usually made by pilgering with walls less than 9 or 10 gauge in thickness. 1945Metallurgia XXXIII. 61/1 If the partly pilgered tube is withdrawn, the shape of the cone between bloom and tube will thus be a projection of the groove that varies around the roll. Ibid. 61/3 One company once pilgered a tube 103/4 in. outside diameter × 3/16 in. thick by no less than 135 ft. 8 in. long. 1973J. G. Tweeddale Materials Technol. II. iv. 95 Pilgering is the name given to the second tube-forge-rolling system, which is done in a pilger mill. |
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