SU1616734A1 - Rolling mill roll - Google Patents

Abstract

The invention relates to rolling production, in particular to the production of sheets by the method of hot and cold rolling. The purpose of the invention is to improve the quality of rolled products by increasing the roll lateral stability. The roll of roll 1 consists of two end conical sections mated to a third transitional conical section. In this case, the end sections are made of the same length, which is 0.33-0.41 in length, of the roll barrel, and the ratio of the diameters of the bases of the truncated cone forming the end section is 1.02-1.10. The taper of the end sections is opposite to the taper of the transition section. The proposed roll profiling makes it possible to increase the resistance of the roll to lateral displacements and to reduce the transverse thickness variation of the rolled sheets. 1 dw., 3 tab.

Description

Table 1

Note: e. At a ratio of 1.02

the stability of the roll is not provided. When the ratio. 1.10 seizes roll pickup.

table 2

1 0.33 39.6

0.36 0.41

43.2 49.2

120

85

120 120

85 85

Table 3

Claims (1)

Claim A rolling roll containing a barrel with two end sections of the same length, paired with a transitional conical section, and the ratio of the length of the end section to the length of the roll barrel is 0.33:; 0.41, distinguishing - U with I , in order to improve the quality of rolled products by increasing the lateral stability of the roll, end -. The sections are made in the form of a truncated cone with a diameter ratio of 20 ditches of bases, amounting to 1.02:; ·. 1.10 and the same for both end sections, while the conicity of the end sections is directed opposite to the conicity of the transition section. Table 1 Option L ₄ mm L mm D _f / D ₂ D1 mm D ₂ mm Stability of a strip in rolls 1 40 120 . 1,02 85 83.3 Satisfactory 2 40 120 1.06 85 80.2 Good ’ 3 40 120 1.10 85 77.3 Good Etc and m e hours and: e. When the ratio of D ₍ / D ₂ <1,02 stability of the roll is not ensured. When the ratio Di / Di> 1.10, the pick-up of rolls worsens. table 2 Option L ^ / L L ₄ , mm IN - L mm D ₁₀ mm D ₂₀ mm Stability of a strip in rolls 1 0.33 39.6 120 85 81 Unsatisfactory 2 0.36 43,2 120 85 77 Also 3 0.41 49.2 120 85 74 Ί Table 3 Option Δ% Δ,% 1 1,02 10 10 10.5 2 1.05 20 8 7.5 3 1,08 thirty 6 6.4