SU733863A1 - Powder rolling mill - Google Patents

Description

I

The invention relates to the field of powder metallurgy, in particular, to mills for the rolling of tapes from meta-metallic powders.

A mill for rolling powders is known, including a frame, an upper and lower pressing rolls and a powder hopper. In this case, the mill is equipped with support rolls, mounted parallel to the pressing

rolls 1.

- ten

The disadvantages of this camp are the inability to produce one. native width of the tape.

The solution closest to the technical essence and the achieved effect is a powder rolling mill comprising a frame, an upper and lower pressing rolls and a powder hopper; the bunker is provided with a powder dosing mechanism 20 made in the form of guide plates mounted for movement along the forming roll, and one of the walls of the bunker is movable and is a gate 2.

The disadvantages of this mill are the low quality of laminated tapes and the limited range (in particular, the width and thickness of the tapes).

The aim of the invention is to improve the quality of rolled strips and the expansion of their range.

To achieve this goal, the mill is equipped with a shaft-milling cutter installed between the hopper and rollers, while the shaft-milling cutter is fixed on the bunker, and the bunker is equipped with supports, one of which is spherical and mounted on the frame, and the others are fixed on the lower roll with the ability to move perpendicular pn his axis.

FIG. 1 - power part of the mill; in fig. 2 shows the layout of the bunker; in fig. 3 - scheme of the rolling process.

The proposed mill consists of frame 1, in which the lower and upper 3 press rolls are installed, cargo screws 4 and masts 5 with large 6 and small 7 lorshny. Above the lower roller 2 on supports 8 and 9 there is a hopper 1O for powder. In this case, the support 8 is made spherical and rigidly fixed on the parma, and the supports 9 are fixed on the roll 2 with the possibility of moving perpendicular to its axis. The wall 11 of the bunker is movable and is a gate when the powder is fed. On the hopper 10 mounted shaft cutter 12, equipped with a drive (on the hell, not shown /.

The camp works as follows.

By changing the position of the hopper 10 with the help of the supports 9, the roll mill 1.2 is installed with the required clearance to the surface of the lower roll 2. The required rolling force is created by pressing the upper roll to the lower roll by changing the position of the pistons 7 of these spaces. When turning on the drives of the rolls and valfreza (on the hell, not shown), the shaft-cutter rotates in the same direction as the rolling direction.

The powder from the hopper 1O, the base of which is the working surface of the lower roll 2, is carried to the rolling zone. In this case, the gate 11 creates a predetermined thickness, a layer of powder, which, after calibration by a shaft-milling cutter, is rolled into the ribbon by rolls 2 and 3.

The application of the proposed mill makes it possible to obtain wide bales of adjustable thickness and porosity, as well as to simplify the design of the device. whole

Claims (2)

1. A mill for rolling powders, comprising a frame, upper and lower pressing rolls and a powder bin, characterized in that, in order to improve the quality of rolled strips and expand their range, it is provided with a mill-shaft mounted between the hopper and the rollers. 2. Stan on p. 1, distinguish Schi and with the fact that the shaft cutter is fixed on the bunker, and the bunker is provided with supports, one of which is spherical and mounted on the frame, and the others are fixed on the lower roll with the possibility of moving perpendicular to its axis. Sources of information taken into account in the examination 1. USSR author's certificate N9 442013, cl. B 22 F 3/18, 1973. 2. Jones VD Basics of powder metallurgy. Properties and application of powder materials, -M., Mir, 1965, p. 340-342. / 77 7 2 j one / ZEil 4 Rm .V T