Preview

Reverse correction parameters during helical reduction

https://doi.org/10.21122/1683-6065-2020-1-74-77

Abstract

The technology of helical reduction with reverse correction is presented. The key difference of the technology is the change in the feed angle during the reduction process to the region of negative values, which allows reverse correction (reduction in the region of small feed angles) and remove the workpiece from the roll gap. This technology can be used to obtain axisymmetric billets of variable profile. The main parameters that determine the reverse correction process are the rotation speed of the rolls, the rate of change of the feed angle, as well as the dimensions of the rolls and the workpiece. When the feed angle changes (in particular during correction), the workpiece continues to move in the axial direction, which makes it necessary to evaluate the magnitude of this movement. In this work, an accurate calculation of the length of the reduced part of the workpiece with a change in the feed angle is carried out.

About the Authors

V. V. Klubovich
Physical-Technical Institute of National Academy of Sciences of Belarus
Belarus
Minsk, Belarus, 10, Kuprevicha str.


V. V. Liaukovich
Physical-Technical Institute of National Academy of Sciences of Belarus
Belarus
Minsk, Belarus, 10, Kuprevicha str.


V. A. Tamila
Belarusian National Technical University
Belarus
Minsk, 65, Nezavisimosti ave.


References

1. Tamila V. A., Liaukovich V. V. Reversivnaya kalibrovka pri poperechno-vintovom reducirovanii trubnyh zagotovok [Reverse grooving for cross-sorew reduction]. Lit’e i metallurgiya = Foundry production and metallurgy, 2018, vol. 92, no. 3, pp. 82–87. DOI: 10.21122/1683-6065-2018-92-3-82-87.

2. Barabashkin V. P., Tartakovskij I. K. Proizvodstvo trub na agregatah s trehvalkovym raskatnym stanom [Production of tubes on a three-roll rolling mill]. Moscow, Metallurgija Publ., 1981, 148 p.

3. Karamyshev A. P., Nekrasov I. I., Parshin V. S., Systerov V. A. Opredelenie usilija obzhatija zagotovok na radial’no-kovochnoj mashine AVS [Determination of the compression force of workpieces on a radial forging machine AVS]. Metallurg = Metallurgist, 2009, no. 3, pp. 61–64.

4. Allwood J. M., Utsunomiya H. A survey of flexible forming processes in Japan. International Journal of Machine Tools & Manufacture, 2006, no. 46, pp. 1939–1960. DOI: 10.1016/j.ijmachtools.2006.01.034.

5. Chumadin A. S., Shishkin A. A. Issledovanie processa obzhima tonkostennyh trub [Study of the process of reduction thinwalled tubes]. Kuznechno-shtampovochnoe proizvodstvo. Obrabotka materialov davleniem = Forging and stamping production. Metal forming, 2012, no. 11, pp. 14–18.

6. Teterin P. K. Teoriya poperechno-vintovoj prokatki [Theory of helical rolling]. Moscow, Metallurgija Publ., 1971, 368 p.


Review

For citations:


Klubovich V.V., Liaukovich V.V., Tamila V.A. Reverse correction parameters during helical reduction. Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY). 2020;(1):74-77. (In Russ.) https://doi.org/10.21122/1683-6065-2020-1-74-77

Views: 3184


Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.


ISSN 1683-6065 (Print)
ISSN 2414-0406 (Online)