JPS6141953A - Device for inspecting quality of phosphor bronze ingot - Google Patents

Abstract

PURPOSE:To make inspection with high accuracy by providing a flaw detector which takes out a signal from a probe as an electric signal, and controls an unnecessary signal. CONSTITUTION:The operator adjusts a digital micrometer 8 until the probe 2 contacts lightly with an ingot 1 and the space between the ingot 1 and the probe 2 is made ''0''mm.; thereafter, the operator returns the probe 2 by operating the micrometer 8 until the space 8 is made about 0.9mm.. The space between the ingot 1 and the probe 2 can be easily measured by the micrometer 8 and adjustment can be made so that the relative position of the ingot 1 and the probe 2 does not change no matter where the ingot 1 exits. When a lower motor 3 is run in such a state, the probe 2 meshed with a ball screw 4 moves toward C along the ingot 1 and when the probe senses the part of the high Sn content existing deviatedly near the surface layer of the ingot 1, the electrical conductivity decreases lower than the electrical conductivity in the peripheral part thereof and the probe 2 emits a signal. The transmitted signal is taken out as the electric signal by the flaw detector; at the same time, the defective signal such as noise is controlled and is recorded on an X-Y recorder.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a phosphor bronze ingot quality inspection device.

[Prior art]

Conventionally, this type of equipment was shown in Figure 1. In Figure 1, (1) is an ingot as an inspection sample, (2)
is an eddy current generating probe, and the probe (2) is engaged with a ball screw (4) rotated by a motor (3), and as the motor (3) rotates in the direction of the arrow B,
It is possible to move in the direction. (5) is a flaw detector connected to the probe (2), (6) is an XY recorder connected to this flaw detector, and (7) is an inspection device.

In the above configuration, the ingot (1) as an inspection sample is placed in a sampling position more suitable than the horizontal casting line.
Cut it out and attach it to the inspection device (7).

In order to adjust the gap between the ingot (1) and the probe (2), measure with a thickness gauge and adjust the probe (2) up and down. By turning on the switch, rotating the motor (3), and moving the probe (2) in the width direction (direction B) of the ingot (1), the Sn content unevenly distributed near the surface layer of the ingot (1) can be detected. When sensing a high part of the probe (2), the electrical conductivity is lower than the surrounding part and the probe (2) emits a signal. One side of the ingot (1) has been inspected.

Turn over the ingot to be inspected (1) and repeat the above operation0
The signal transmitted by the above operation is subjected to noise adjustment using a flaw detector (5), and recorded on an XY recorder (6). Thereby, it is possible to determine the presence or absence of a portion of the ingot (1) with a high Sn content, that is, a reverse segregation phenomenon.

Conventional phosphor bronze ingot quality inspection equipment is configured as described above, so it is necessary to cut the sample each time for inspection, and it is also necessary to measure the gap between the sample and the sample to be inspected using a thickness gauge. was there. Furthermore, since the probe was arranged on one side, there was a drawback that it was necessary to perform one reversal.

[Summary of the invention]

This invention was made for the purpose of eliminating the drawbacks of the conventional ones as described above, and includes a screw placed along a continuous casting line and connected to a motor, and the rotation of this screw to spread the width along the ingot. a probe that moves in a direction to measure the electrical conductivity of the ingot; and an adjustment mechanism that adjusts a gap between the probe and the ingot.

Proximity switches provided on both sides of the probe to detect the end of the ingot and change the direction of movement of the probe;
No need to extract the signal from the above probe as an electrical signal (
The present invention provides a phosphor bronze ingot quality inspection device that can be installed in a horizontal continuous casting line and inspected with high accuracy without cutting the test sample. be.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. Second
The figure is a front view of the embodiment, FIG. 3 is a sectional view thereof, and FIG. 4 is a partially enlarged view of FIG. 2. In FIG. 9, the same reference numerals as in FIG. ) is an ingot as a sample to be inspected that is drawn out by continuous casting. Two probes (2) are placed above and below the ingot (1) in the horizontal continuous casting line so that the top surface can be automatically inspected after the bottom surface inspection is completed. The probe (2) is connected to the ball screw (4) via the digital micrometer (8).
) so that the gap with the ingot (1) can be measured. Also probe (2
) is provided with proximity switches (9) on both sides of the ingot (1) in the moving direction (direction C) to detect the end of the ingot (1), and when the end is detected, the motor (3) is rotated multiple times. , the probe (2) reciprocates and performs flaw detection only in one direction. The other configurations are the same as in FIG. 1.

To perform an inspection in the above configuration, adjust the digital micrometer (8) until the probe (2) lightly contacts the ingot (1), and then place the point between the ingot (1) and the probe (2).
) with the gap 0IIIl, operate the digital micrometer (8) and return the probe (2) until the gap becomes 0.9 mm, by performing this operation once each on the top and bottom surfaces of the ingot (1). , the gap setting with the ingot (1) is completed. The ingot (1) and the probe (2) are 1.
If the distance is 5n+m or more, the detection power will drop significantly.Also, when the continuously cast ingot (1) is replaced with a mold, its position will shift slightly in the vertical direction with each mold change, but the position of the continuously cast ingot (1)
) and the probe (2) can be easily measured with a digital micrometer (8) as described above, and the gap between the ingot (1)
Adjustment can be made so that the relative positions of the ingot (1) and the probe (2) do not change no matter where they are located.

When the lower motor (3) is rotated in the above state, the probe (2) engaged with the ball screw (4) moves in the width direction (direction C) along the ingot (1), and ), the electrical conductivity becomes lower than the surrounding area, and the probe (2
) emits a signal.The signal is extracted as an electrical signal by the flaw detector (5), controls unnecessary signals such as noise, and is recorded in the XY recorder (6).

Flaw detection with the probe (2) is performed only one way, and when the probe (2) moves near the end of the ingot (1) and the proximity switch (9) detects the end as shown in Figure 4, the motor ( 3) is reversed and the probe (2) returns to the opposite side, and when the proximity switch (9) on the opposite side detects the end, it is further reversed and flaw detection is performed in the same manner as above.

When replacing the mold, the position of the ingot (1) in the width direction may shift by several hundred degrees, and when the width of the ingot (1) is changed, the probe (2) may be moved directly to the edge of the ingot (1). If the probe (2) comes off the end, a signal similar to the defect signal will be emitted, making inspection impossible. However, since the probe (2) changes direction at the end using the proximity switch (9),
Only accurate inspection can be performed. In this way, by detecting the end of the ingot (1) using the proximity switch (9) and changing the direction, it is possible to prevent the probe (2) from protruding from the end and generating a false defect signal. Ru.

After carrying out the above-mentioned inspection on the lower surface of the ingot (1) for several minutes, the lower motor (3) stops and the upper motor (3) stops.
) rotates, a similar inspection is performed on the top surface of the ingot (1), and this is repeated. In this way, the ingot (1)
The inspection is performed alternately on both sides.

The signal output from the probe (2) is passed through the flaw detector (5) and recorded on the XY recorder (6) to two-dimensionally determine whether there is a reverse segregation phenomenon in the ingot (1) sent from the continuous casting line. can.

In the above example, a digital micrometer (8) was used as a gap adjustment device between the ingot (1) and the probe (2), but a sensor that can detect the position up to the U ingot (1) and a sensor that works with it are also used. A motor that can move up and down slightly may be provided. Further, although the description has been made regarding the case where the determination is recorded in the XY recorder (6), it is also possible to store only the defect signal and display it with a buzzer, lamp, etc. when a defect signal of a certain number of chambers or more is output.

The same effects as in the above embodiment are achieved.

〔Effect of the invention〕

As described above, according to the present invention, the Rin'W copper ingot quality inspection equipment is incorporated into the continuous ingot making line, so there is no need to cut the ingot, which is the inspection sample, and highly accurate inspection is possible. Furthermore, even if the width of the ingot is changed, no erroneous defect signals are generated and inspection can be carried out accurately.

[Brief Description of the Drawings] Fig. 1 is a cross-sectional view showing a conventional inspection device, Fig. 2 is a front view showing a phosphor bronze ingot quality inspection device according to an embodiment of the present invention, and Fig. 3 is a cross-sectional view thereof. FIG. 4 is a partially enlarged view of FIG. 2. In the figure, (1) is the ingot, (2) is the probe, and (3) is the ingot.
is the motor, (4) is the ball screw, (5) is the flaw detector, (6
) is an XY recorder, (7) is an inspection device, (8) is a digital micrometer, and (9) is a proximity switch. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (4)

[Claims] (1) A screw placed along the continuous casting line and connected to a motor, a probe that moves in the width direction along the ingot by the rotation of this screw and measures the electrical conductivity of the ingot, and this probe and an adjustment mechanism for adjusting the gap between the ingots, a proximity switch provided on both sides of the probe to detect the end of the ingot and change the direction of movement of the probe, and convert the signal from the probe into an electrical signal. A phosphor bronze ingot quality inspection device characterized by being equipped with a flaw detector that controls a signal that does not require extraction. (2) The inspection device according to claim 1, wherein a screw, a probe, an adjustment mechanism, and a proximity switch are respectively provided on both sides of the ingot. (3) The inspection device according to claim 1 or 2, wherein the adjustment mechanism is a digital micrometer. (4) The inspection device according to any one of claims 1 to 3, characterized in that the signal from the flaw detector is recorded on an XY recorder.