SU38068A1 - Adaptation for hot briquetting of metal chips - Google Patents

Description

Hot briquetting of metal shavings is known by pressing and simultaneously heating the chips with electric current passed through them. The present invention improves this method of briquetting by using a tool consisting of rings assembled and isolated from each other, constituting a matrix supported on a copper contact plate and a copper punch connected to another contact.

In FIG. 1 shows a matrix in longitudinal section; FIG. 2 - the same, side view; FIG. 3 - the same, top view; FIG. 4 is a side view of the puncheson; FIG. 5 is the same, top view; FIG. 6 is a device with a matrix consisting of rings cut in half, and FIG. 7 - the same, top view.

The proposed fixture for which the briquetting of metal shavings consists of a matrix (fig. 1-3) assembled from separate rings 7, 2, insulated with spacers of mica or other insulating material, depending on the voltage of the current passing through the mass. shavings. The rings are fastened with four bolts 3, passed through them, insulated from the rings with a gasket of mica under the head of the bolt and washer; the body of the bolt must also

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to be isolated. In order to eliminate the possibility of shifting the cradle of one relative to the other, since the clamping bolts cannot prevent shear, the matrix is fastened with four pairs of brackets and vertical gaskets b. Insulation should be laid between the matrix and the gaskets. After stapling, the matrix is bored in the cylindrical and conical parts.

The matrix is fixed on the cushion 7 by means of four studs 8, isolated from the matrix by an insulating gasket under the washer and around the body of the stud.

The cushion cut-out includes a movable copper contact plate 9, fixed on one of two movable wedges that can slide in the cushion cut-out and remove the contact from under the matrix.

The punches JO of the fixture (Fig. 4-5), made of copper, are fastened to the threads in the holder //. On the punch, the upper contact 72 is pressed, fixed with a retaining ring 75. At the end of the punch, 70 steel ring M is pressed.

Briquette is the result of the work of the device with the simultaneous action of a high amperage electric current at a low voltage on the mass of chips enclosed in a matrix.

The die and punches are mounted on a hydraulic press and secured

clamps 15 (fig. 2). The contacts P and / 2 of the matrix and the punches are supplied with current from the transformer by six keys 16 and 17.

Dp elimination of the induction matrix can be assembled from thin steel rings 20, 21, 22 with a thickness of 0.3-0.5 mm, cut in half (Fig. B-7). When mounted, the rings are stacked when the slits are offset by 90 ° in neighboring hollows.

The matrix can also be a solid, cylindrical shape made of diabase.

The die is filled with cast iron chips. During the pressing process, the die and the punch are in current. As the chip is pressed, the current begins to flow through the whole mass, heats and softens it and thus makes it easier to press.: To remove the briquette from the matrix, the press is turned off, the bottom contact 9 is pulled out from under the matrix using the handle J8, and the briquette is pushed out of the second press matrices. The contact extension limit is adjusted by the stop bolt J9. When pressing, it is possible that the briquette will stick to the contact, as a result of which the latter is difficult to push. To facilitate advancement

contact from under the matrix, the contact is fixed on the upper of the two movable wedges, which, when extending the lower wedge, has the opportunity to lower along with the contact due to its own weight or when hitting the contact.

Subject invention

, 1. A device for hot briquetting of metal shavings by pressing and simultaneously glowing electric current passed through it, characterized in that it consists of: 1) a matrix assembled from rings isolated from each other, 2 and supported on a copper contact plate 9 (figs. 1 - 3), and 2) of the copper punch joint JO (fig. 4-5) connected to the contact J2.

2. Modification of the apparatus according to claim 1, characterized in that the matrix is assembled from thin steel rings with a thickness of 0.3-0.5 mm cut in half (Fig. 6 - 7).

3) The modification of the apparatus according to claim 1, characterized by the use of a diabase matrix. jSjj ft FIG. 2. TH & ti tSb fig B. L.