RU2205079C1 - Apparatus for descaling rod - Google Patents

Abstract

FIELD: drawing production, namely descaling before drawing process. SUBSTANCE: apparatus for descaling surface of rolled rod by means of ferromagnetic abrasive powder includes hollow chamber placed between poles of electromagnet; piston mounted with possibility of reciprocation motion and rotation. End of piston is in the form of auger. Chamber is provided with movable tip having inner cone joined with longitudinal-oscillation vibrator. EFFECT: improved design, enhanced efficiency of descaling, optimal condition for compacting powder, elimination of supercompaction and mobility loss of powder at outlet of chamber. 2 dwg

Description

 The invention relates to the field of drawing production, and in particular to equipment for combining two processes - descaling and drawing.

 Known vibrational drawing of the wire [1], in which the die makes longitudinal vibrations.

 Also known is ultrasonic treatment using free or bound abrasive particles [1].

 However, these types of wire processing and devices for their implementation cannot be used to remove scale from the surface of the wire rod, since the volume (mass) of scale removed from the wire rod significantly exceeds the amount of allowance removed by ultrasonic processing or vibration lapping, which are finishing operations.

 In addition, to remove scale from the surface of the wire rod, a large mass of abrasive powder is used, continuously saturated with cleaning products (scale, metal dust), which must slowly move relative to the wire rod moving at high speed.

 These conditions do not satisfy the devices recommended in a known source [1].

 The invention is known [2], which comprises an unwinding device, a loop catcher, a descaler, a device for magnetizing a wire, a device for cooling the wire, in which a device for mechanical descaling using a ferromagnetic abrasive powder is made in the form of a hollow rotor placed between the poles of a permanent electromagnet and freely mounted on rolling bearings, while inside the rotor there is a piston mounted with the possibility of translational and rotational motion, on which Rum mounted rods.

 The disadvantage of this device is the rapid compaction of the abrasive powder in the conical part of the working chamber, the formation of a tunneling effect and, as a consequence, the termination of cleaning.

 Thus, an object of the invention is to eliminate the above disadvantages in the design of the device and increase the cleaning efficiency.

 The problem is solved in that in the device for removing scale from the surface of the wire rod, containing a hollow chamber located between the poles of the electromagnet, a piston mounted with the possibility of translational and rotational movement, according to the invention, the end face of the piston is made in the form of a screw, and the chamber is equipped with a movable tip with an inner a cone connected to a vibrator of longitudinal vibrations.

 Replacing the pins with a screw can significantly increase the efficiency of injection of abrasive powder into the working chamber without reducing the piston pressure on the powder, as well as eliminate loosening of the abrasive mass at the surface of the wire rod.

 The execution of the end of the chamber in the form of a movable tip with an inner cone allows achieving the required powder compaction on the surface of the wire rod, and the connection of the tip with the vibrator of longitudinal vibrations eliminates the danger of the formation of a tunnel effect, i.e. powder over-compaction and loss of mobility at the outlet of the chamber.

 Figure 1 shows a General view of the device. Figure 2 - node I is part of a longitudinal section along the working chamber.

 The device comprises a frame 1, a roller descaler 2, a reciprocating drive 3 of the piston 4 with a screw 5, a rotational drive 6 of the piston 4, a loading chamber 7, a feeder 8, a working chamber 9, an electromagnet 10, a conical tip 11, a demagnetizer 12, a hub 13 , longitudinal vibrator 14, rods 15, hydraulic cylinders (or pneumatic cylinders) 16, oscillation generator 17. Vibrators can be applied mechanical, electromagnetic, magnetostrictive, electrostrictive. The oscillation frequency of the cone tip can be from 50 to 20,000 Hz (or more), depending on the wire rod material, the thickness and properties of the scale, and the cleaning speed. For collecting and suctioning dust after cleaning, the device contains a vacuum suction 18, and for the formation of a lubricating layer on the surface of the wire rod to be cleaned, the device is equipped with a tank 19 filled, for example, with dry pine sawdust 20 with the addition of 2-3% by weight of rosin.

The device operates as follows. The wire rod 21 is charged into descaling machine 2 and then through the channels to the working chamber 7, 9, the nozzle 11, the vibrator 14, the vacuum suction 18 and the container 19. The abrasive powder 22 is fed into the working chamber 9 through the loading chamber 7 and the feeder 8, the piston drive 3 is turned on - a screw and a rotation drive 6. The abrasive powder 22 is pumped into the working chamber 9 and into the conical space of the tip 11, the hydropneumatic cylinders 16 are simultaneously turned on and the powder is additionally compressed by the tip 11, the longitudinal vibrator 14, the electromagnet 10 and the demagnetizer 12 are turned on, after which the drawing mill is switched on (not conventionally shown in the drawing). Designations: a - powder supply; b - removal of the bulk of the waste treatment; C is the stroke of the rods in the direction of compression of the powder; f is the vibrator frequency, V _n is the wire rod speed.

 This device can work both as part of a drawing mill, and autonomously. The introduction of this device allows you to abandon the environmentally unclean process of pickling wire rod and significantly reduce operating costs for cleaning.

Sources of information
1. Kumabe D. Vibration cutting. - M .: "Engineering", 1985.

 2. RF patent 2110343. - "Line for cleaning and drawing wires", 05/10/98, bull. thirteen.

Claims (1)

 A device for removing scale from the surface of the wire rod, containing a hollow chamber located between the poles of the electromagnet, a piston mounted with the possibility of reciprocating and rotational movement, piston drives, characterized in that the piston end face is made in the form of a screw, and the chamber is equipped with a movable tip with an internal a cone connected to a vibrator of longitudinal vibrations.

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