SU1359023A1 - Vacuum rolling mill - Google Patents

Abstract

The invention relates to the field of rolling production and can be used in the manufacture of rolled products from refractory metals in a vacuum. The purpose of the invention is to provide the possibility of continuous movement of the rolled stock without having to relax the chamber. The vacuum rolling mill contains a vacuum chamber placed in a sealed housing 1, work rolls 2, their drives 3, and lead-in 4 and lead 5 wiring. Means for vacuuming are made in the form of Laval 6 nozzles located outside the wiring. The heating device 7 provides heating of the blanks. 3 lin. i (L has co-oped

Description

. The invention relates to rolling production, and more specifically to the design of vacuum rolling mills, and can be used in the manufacture of rolled products from refractory metals and alloys.

The aim of the invention is to provide continuous movement of the rolled stock without relaxing the chamber.

Figure 1 shows a cross-helical vacuum mill, longitudinal section; figure 2 - section aa in Fig, 1; figure 3 - scheme of the vacuum mill longitudinal rolling.

Vacuum rolling mill consists of a sealed housing 1 with a vacuum chamber, with work rolls 2, their drives 3, lead 4 and lead 5 wiring. The means of evacuation is made in the form of Laval nozzles 6, located outside the wiring. Vacuum rolling mill can be performed In several versions, for example in the form of two or three roller helical rolling mill (Fig. 1), longitudinal rolling mill with double-support rolls (Fig.Z), as well as a cross-rolling mill. In all of these embodiments of the vacuum rolling mill, the vacuum chamber is easily sealed by installing vacuum seals at the nozzles. The heating device is designed to heat the workpiece before rolling.

The device works as follows.

The work rolls 2 are rotated by drives 3. For-

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five

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5 F o r

The cooking from the loading table is fed to the heating device and then through the lead-in wiring A to the area of the work rolls inside the vacuum chamber. The tightness of the vacuum chamber is maintained throughout the entire working cycle by supplying air from the nozzles 6 towards the movement of the workpiece, which cuts off the surrounding atmosphere as it enters and leaves the vacuum chamber. The finished bar is delivered through lead wiring 5 to the receiving table. The process then repeats.

Thus, the proposed vacuum rolling mill, in comparison with the known one, allows to increase productivity and improve working conditions by ensuring the continuous transfer of piece blanks to the rolling zone without unwrapping the chamber.

Mule Invention

F o r

Vacuum rolling mill containing a sealed housing with a vacuum chamber, lead-in and outlet wires and working drive rollers and means of vacuuming, characterized in that, in order to ensure continuous movement of the rolled without dismantling the chamber, the vacuum means are located in the form of Laval nozzles that are located outside inlet and outlet wiring with the direction of the expanding part of the nozzles from the sealed enclosure.

cpus.Z

Editor Yu, Sereda

Compiled by L.Maturina

Tehred L. Serdyukova Proofreader V. But ha

Order 6021/12 Circulation 481 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, city Uzhgorod, Projecto st., 4

sri.Z

Claims (1)

The formula of the image contains a vacuum outlet, a vacuum rolling mill, a sealed casing with an emitted chamber, input wires and working drive rolls and vacuum means, characterized in that, in order to ensure continuous movement, rolling without evacuating the chamber, the vacuum means are made in the form of Laval nozzles, which located outside the input and output wiring with the direction of the expanding part of the nozzles from the sealed housing.