JP2007051352A - Stainless steel welding scale removal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stainless steel welding scale removal device for removing welding scale produced on the surface of stainless steel upon welding the stainless steel. <P>SOLUTION: An electrolytic solution 2 for removing scale is charged into a vessel 1. A workpiece stand 3 is mounted inside the vessel 1. Stainless steel 4 after welding is placed on the workpiece stand 3. A liquid conveying pump 5 is mounted inside the electrolytic solution 2 for removing the scale in the vessel 1. The scale removal welding electrolytic solution 2 conveyed by a liquid conveying pump 5 is conveyed to the introduction port 7a of a pulse jet nozzle 7 through a liquid quantity controller 6. A reservoir is formed at the inside of the introduction port 7a to which the electrolytic solution 2 for removing scale is conveyed. The pulse jet nozzle is tilted from the reservoir to the tip in a tapering manner, and the nozzle is formed at the tip. A supporting member is mounted on the end part of the reservoir. An ultrasonic vibrator is mounted on the supporting member. An oscillator 9 is connected to the ultrasonic vibrator. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a stainless steel weld burn removing device that removes weld burn generated on the surface of stainless steel when the stainless steel is welded.

  Conventionally, in order to remove the welding burn of stainless steel, a pickling method in which the welded stainless steel product is washed away with a strong acid or an electrolysis method using a neutral electrolytic solution or a weak acidic electrolytic solution is used.

  However, in the method of removing the weld burn of stainless steel constructed in this way, the electrolysis method has poor workability, requires the same work time as welding, and sufficiently removes the weld burn of stainless steel. In addition, there is a problem that it is difficult to use a strongly acidic chemical solution in a factory of a drainage facility for pickling.

  The problem to be solved is that the electrolysis method has poor workability, requires the same work time as welding, and the pickling method has a problem that it is difficult to drain a highly acidic chemical.

  In the present invention, the container is filled with the electrolytic solution for scoring, the work table is placed in the container, the welded stainless steel is placed on the work table, and the pulse jet nozzle is equipped with an ultrasonic transducer inside. The front surface of the ultrasonic vibrator is provided with an introduction port for introducing the burn-out electrolyte, and a nozzle for ejecting the burn-out electrolyte is provided. The oscillator applies an oscillation output to the ultrasonic vibrator of the pulse jet nozzle. The liquid transport pump is configured to supply the electrolytic solution for scoring in the container to the inlet of the pulse jet nozzle, and the liquid transport pump is driven and the electrolytic solution for scoring is removed from the pulse jet nozzle to the welded stainless steel. Is used to remove the weld burn of stainless steel after welding.

  In the stainless steel welding burn removal device of the present invention, it is possible to remove the weld burn of stainless steel after welding by irradiating the ultrasonic wave generated by the ultrasonic vibrator from the pulse jet nozzle and the electrolytic solution for scoring. There is an advantage that workability is good.

  In the present invention, removal of weld burn of stainless steel after welding can be achieved by irradiating ultrasonic waves generated by a ultrasonic vibrator and a burn-out electrolyte from a pulse jet nozzle, This can be achieved by a DC voltage applied between them.

  FIG. 1 is a configuration diagram of a stainless steel welding burn removal apparatus according to an embodiment of the present invention. A scoring electrolyte 2 is placed in a container 1 and a work table 3 is mounted in the container 1. The welded stainless steel 4 is placed on the top, and a liquid transfer pump 5 is mounted in the burn-out electrolyte 2 of the container 1. The burn-off weld electrolyte 2 transferred by the liquid transfer pump 5 is a liquid. A liquid reservoir 7b is formed in the introduction port 7a through which the burn-out electrolyte 2 is conveyed through the quantity controller 6 to the introduction port 7a of the pulse jet nozzle 7, and tapers from the liquid reservoir 7b toward the tip. The nozzle 7c is formed at the tip, the support member 7d is attached to the end of the liquid reservoir 7b, and the ultrasonic vibrator 8 is attached to the support member 7d. 9 is connected Drawer force is applied.

  In the stainless steel weld burn removal device of this embodiment configured as described above, an oscillation output is applied from the oscillator 9 to the ultrasonic vibrator 8 of the pulse jet nozzle 7, and the liquid transport pump 7 is driven, and the pulse jet nozzle 7. When the burnout electrolyte 2 is sprayed from the nozzle 7c, the sprayed burnout electrolyte 2 is, as shown in FIG. 3, a weld burned portion 4a of the stainless steel 4 after box-type welding. As shown in FIG. 4, since it is sprayed onto the welded portion 4c of the stainless steel 4 in which the flange 4B is welded to the cylindrical pipe 4A, the stainless steel 4 is sprayed together with the ultrasonic wave generated along with the ultrasonic waves generated by the ultrasonic vibrator 8. There is an advantage that the weld burn attached to 4 is quickly and cleanly removed.

  FIG. 5 is a block diagram of a stainless steel welding burn removal apparatus according to another embodiment of the present invention, wherein 1 is a container, 2 is an electrolytic solution for scoring, 3 is a work table, 4 is stainless steel after welding, and 5 is a liquid carrier. The pump, 6 is a liquid quantity controller, 7 is a pulse jet nozzle, 8 is an ultrasonic vibrator, 9 is an oscillator, and since these configurations are the same as those in the above embodiment, the description is omitted, but in this embodiment, A wire mesh electrode 10 is mounted on the front surface of the portion where the burn-out electrolyte is ejected from the pulse jet nozzle 7, and a DC power supply 11 is connected between the stainless steel 4 and the wire mesh electrode 10.

In the stainless steel weld burn removal device of this embodiment configured as described above, an oscillation output is applied from the oscillator 9 to the ultrasonic vibrator 8 of the pulse jet nozzle 7, and a DC voltage is applied from the DC power supply 11 to the wire mesh electrode 10. When the liquid transport pump 7 is driven and the burnout electrolyte 2 is ejected from the nozzle 7 c of the pulse jet nozzle 7, the sprayed electrolyte 2 is injected into the supersonic wave generated by the ultrasonic transducer 8. There is an advantage that the welding burn that is jetted together with the sound wave and adheres to the stainless steel 4 is quickly and neatly removed.

  In the above embodiment, the DC voltage applied between the stainless steel 4 and the wire mesh electrode 10 may be about 5 volts.

It is a block diagram of the stainless steel welding burn removal apparatus of the Example of this invention. It is sectional drawing of the pulse jet nozzle of the stainless steel welding burn removal apparatus of FIG. It is a block diagram of the stainless steel after welding installed in the work stand of the stainless steel welding burn removal apparatus of FIG. It is a block diagram of the stainless steel after welding installed in the work stand of the stainless steel welding burn removal apparatus of FIG. It is a block diagram of the stainless steel welding burn removal apparatus of the other Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container 2 Alkaline liquid 3 Work stand 4 Stainless steel after welding 5 Liquid conveyance pump 6 Liquid quantity controller 7 Pulse jet nozzle 8 Ultrasonic vibrator 9 Oscillator 10 Wire mesh electrode 11 DC power supply

Claims (3)

  A container containing an electrolytic solution for scoring, a work table installed in the container, stainless steel after welding placed on the work table, and an ultrasonic vibrator mounted therein, the ultrasonic vibration A pulse jet nozzle provided with an introduction port for introducing the burn-out electrolyte solution on the front surface of the child, and a nozzle for ejecting the burn-out electrolyte solution, and an oscillation output to the ultrasonic vibrator of the pulse jet nozzle An oscillator to be applied, and a liquid transport pump for supplying the electrolytic solution for scoring in the container to the introduction port of the pulse jet nozzle, and driving the liquid transport pump, after the welding from the pulse jet nozzle A stainless steel weld burn removing device which sprays an electrolytic solution for scoring on the stainless steel to remove the weld burn of the stainless steel after welding.   The wire mesh electrode mounted on the front surface of the pulse jet nozzle, and a direct current power source connected between the stainless steel and the wire mesh electrode, the negative electrode of the direct current power source is connected to the work table, the wire mesh electrode 2. The stainless steel weld burn removing device according to claim 1, wherein a positive electrode is connected and connected so as to give a voltage of 5 volts to remove the weld burn of the stainless steel after the welding.   The stainless steel welding burn removal device according to claim 1, wherein a liquid amount controller is connected to the liquid transfer pump.

Images