SU1407597A1 - Method of preparing a billet for helical rolling - Google Patents

Abstract

The invention relates to oopauoiKc m la.T. ioB pressure and monchsch be isi (). 1: 10 vaio in the manufacture of the yur of the chekshaihs bes iiioBHi) i TjnT) methods. KS screw HJIOHHIBKH. He. ib is new in the accuracy of the processing of the studied materials. nor by the search for misalignment points, (lusobactect part nodachu heated (|)) wah.hknk szhimno1-o sgaya with nodior zaientrovochnoy go.yuvkoG zaney1 ro; zentrovochni Hoii th. juvn, ustaovleiio | 1 movably in the va: - kah so that the nose ras.tag.k in place zagot1) vki. lloc. ie zanentrovkn not-i4 THei o the end, at the time of the entrance of the rear mop li li center desoriiiii, zadin11 konen: ovkn zaititrovne zapetrovochnoi no .; iiHpaioHieii head in n) oiese i rokat. about cl

Description

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The invention relates to the processing of metals by pressure and can be used in the manufacture of hot rolled seamless pipes using the method of helical piercing. j The purpose of the invention is to improve the processing precision of the products obtained by using | misalignment errors.

I The method of preparation of the workpiece consists in supplying the heated workpiece to the rolls of the blooming mill, meeting with the centering head, centering the front end ;; preparing in the process of rolling at the rear end with an additional centering head and at the moment of the entrance of the rear end of the crimping rolls.

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To center the rod at the rear end of the billet, it rises with a force that does not allow it to be pushed out of the bushing and is repaired at the same speed as the end of the billet.

The method of preparation of blanks for screw firmware improves the accuracy of the ends of the stitched products and, as a result, reduces the consumption of metal for technological trimming.

Claims (1)

Invention Formula The method of preparation of the workpiece to the screw npoujHBKe, including the submission of the subsect. Such a way of preparing the workpieces of the heated billet in the compression slant To center the rod at the rear end of the billet, it rises with a force that does not allow it to be pushed out of the bushing and is repaired at the same speed as the end of the billet. The method of preparation of blanks for screw firmware improves the accuracy of the ends of the stitched products and, as a result, reduces the consumption of metal for technological trimming. Invention Formula The method of preparation of the billet to the screw npoujHBKe, including the supply of sub-heated billet in the compression obliquely mounted rolls and centering of the front end of the billet with the centering head B of the rolling process, characterized in that, in order to increase the machining accuracy Red screw allows new to increase the accuracy of processing of the obtained products due to the exclusion of misalignment. Coaxiality of the billet and the rolling stock formed during the rolling process is provided by 2o of the products obtained by eliminating the fact that the formation of the spring takes place at the center, the sub-head is carried out additionally at the centering head, which is fixed from the transverse center of the rear end at the entrance of him still. For this centering head crimping rolls. mounted rolls and centering of the front end of the billet with the centering head B of the rolling process, characterized in that, in order to increase the machining accuracy products obtained by elimination, the suppression is carried out