JPH0238845A - Emission spectral analysis - Google Patents

Abstract

PURPOSE:To supplying a sample to an analyzer smoothly and accurately by determining the order of priority of processing based on a result of analys and the identity of the sample to automate the transfer of the sample. CONSTITUTION:Samples X are placed on a spectral analysis stock table 3 temporarily by a supply line 2. When a necessary sample is taken out with a spectral analysis manipulator 4, the table 3 is turned and the sample is supplied to an analyzer 1 through an air flow off station 5 and a manipulator 4. After the analysis, the sample is shifted to a camera station 7 and an operator judges the quality thereof. When it is accepted, the sample is shifted to a label printer 8 to be recovered with belts 9A nd 9B. When it is rejected, the sample is set again for the analyzer 1. The manipulator 4 has an order of priority determined according to the identity of the sample.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an emission spectroscopic analysis method for analyzing the components of molten steel and the like.

[Conventional technology]

Emission spectroscopy is widely used for component analysis of molten steel. When the number of samples is large, rapid processing is required, and for this purpose, automation of sample preparation, supply and transportation of analysis samples, and discharge and transportation of analyzed samples is being attempted.

[Problem to be solved by the invention]

By the way, in the component analysis of molten steel, RH furnace and LT
There are refining samples outside the furnace, samples inside the converter, ladle samples, etc., and the priority of processing differs depending on the identity of these samples. In addition, samples with poor analysis occur, and it is necessary to re-apply the samples to the analyzer.

Furthermore, in addition to the usual analyte samples, calibration samples (
samples with known components) are mixed into the analysis procedure.

However, conventionally, the supply of samples to the analyzer and the processing of the samples coming out of the analyzer have been performed manually based on experience with analytical tools.

However, as described above, this process is too complicated, requires analysis tools from a large number of people, and is prone to mistakes in the processing procedure.

[Means to solve the problem]

The above problem is to determine the processing priority of the sample based on the presence or absence of a sample to be analyzed temporarily placed on the stock table, the presence or absence of an analysis failure sample placed on the analysis failure sample holder, and the identity of the sample. While deciding, strike
This problem can be solved by using automated means to transfer the sample between the sample, the spectrometer, the sample holder for failed analysis, and the like.

[Specific structure of the invention]

The present invention will be further explained below with reference to the drawings.

Figure 1 schematically shows the equipment surrounding the emission spectrometer 1.
The sample to be analyzed
and is temporarily placed on the spectroscopic stock table 3.

The maximum number of temporary storage is 10 (wax10 in the figure has this meaning, and it has the same meaning even if it is placed in other places l1lax). The reality of Spectroscopy Stonocte~Puru 3 is,
As shown in Fig. 5, it is a circular table, around which a sample Rotate to. The spectral stock table may be a linear table, in which case the samples are arranged linearly in two rows and the table is moved longitudinally to remove the samples.

The sample taken out in this way is air blown to remove chips and oil at an air blow station 5. Next, the sample is supplied to the analyzer 1 by the manipulator 4. For analyzer 1, 2
Analyze the location. The analysis includes checking the upper and lower limits of a fat calibration curve, (b) checking R control, and fc) determining component specifications. This determination is automatically determined by the analysis processor shown in FIG.

After this analysis, the sample is moved to the camera station 7 by the temporary manipulator 6, and an operator makes a quality/failure judgment based on the image taken through the camera. The reason why the temporary manipulator is separately provided here is to allow the spectroscopic manipulator to perform other operations during the confirmation waiting time at the camera station, thereby increasing the processing speed as a whole.

Thereafter, if the operator performs a key-in for quality judgment, or if there is no key-in even after M8'' has elapsed, the following operations (1) and (2) are performed.

(1) In the case of a successful key-in or when M seconds have elapsed After outputting codes such as charge number, sampling process, steel type, etc. to the label printer 8, the manipulator 4 moves the code to the label printer 8. Thereafter, after a label with the ID code printed on it is affixed to the sample, a sample discharge manipulator (not shown) is used to transfer the sample to the ladle sample collection belt 9A or the in-furnace/outside-furnace sample collection belt 9B, depending on the identity of the sample. Collected by

(2) In the case of a defective key-in, temporarily place the sample on the NG sample mounting stand 10A or IOB using the manipulator 4. For this temporarily placed sample, the operator should re-analyze it after re-polishing or
Or, if there are cracks or nests, there is no point in polishing it, so press the Button button to instruct whether to collect it. In the case of collection, after affixing a label, the product will be collected as described above according to its identity. If it is determined that recovery is not required and that it can withstand re-analysis, an instruction is given to the manipulator according to operation decision 71-Rix, which will be described later, and the sample waits for removal by the manipulator and installation in the analyzer 1.

By the way, at the camera station described above, the operator determines the discharge marks on the sample X accompanying the analysis. As shown in FIG. 6, this discharge trace appears as a white discharge trace A with a dark blue surrounding area compared to other metal colors. The case of FIG. 6 shows the case where analysis was performed four times. If the discharge is not sufficient (that is, it is not suitable for collecting data as analysis values), the circumference of the discharge trace A will be only white instead of dark blue, or the shape will be disordered, so the discharge trace A An operator visually observes the shape and color distribution on a CRT monitor to determine whether there is an abnormal discharge trace. If there is an abnormality in this discharge trace, or if the operator determines that it is abnormal based on the analysis data and re-analyzes it, please check the NG as described above.
Temporarily place it on the sample mounting stand 10A or IOB.

On the other hand, as mentioned earlier, Analyzer 1 analyzes two locations in one analysis, and compares the data at each location. If there is a large difference between the two, or if the component exceeds the standard, etc. Then, the third and fourth locations were analyzed again, and the state of the discharge marks after these four locations were analyzed is shown in FIG. Further, when analyzing each location, the sample X is rotated so that the discharge occurs at a location where there is no previous discharge trace. Reference numeral 11 denotes a spectral calibration sample supply table, which is supplied to the analyzer 1 by the manipulator 4.

The present invention aims to supply various samples to an analyzer in a well-procedure and accurately. The spectroscopic manipulator 4 plays this role. The operation of this spectroscopic manipulator 4 follows the matrix shown in Table 1.

That is, first, priority is determined according to the identity of the sample, and the highest priority sample l is subjected to out-of-furnace refining (RF (furnace or L).
(from T furnace, etc.) sample, and the next priority sample 2
is the in-furnace refining (converter) sample, and non-priority sample 3
It will be considered as a one dollar sample. The sample identity data is
Obtained from sample source calculator. In addition, the presence or absence of a sample (in Table 1, O indicates the presence of a sample and × indicates the absence of a sample) is determined by the sample trunking means for each of the stock table and the two NG sample loading tables.

The position of each sample is fully known by the tracking sensor and manipulator movement. Under such conditions, the order of operations in the right column of Table 1 is determined.

The details of the operation are as follows.

A: Holding the younger sample circuit after waiting for NG reset.
Reset the BANG to the analyzer by grasping the one that is earlier and go to the analyzer C: NG resetting the one with higher priority, waiting for 7 points, then grasping and going to the analyzer D: Waiting for NG to be reset, then grasping and going to the analyzer E: "Waiting for rNG re-centing" means waiting for re-analysis instructions from the operator for NG samples. ``J with the lowest number of samples refers to the sample that was collected earlier in the same processing process, and ``J with the highest priority in stock refers to the sample with the highest priority among the multiple samples on the stock table.'' Say high sample.

Further, the furnace number inquiry in Table 1 refers to an inquiry about the furnace number of a converter, an electric furnace, and hot metal pretreatment. What is a CBNO inquiry?
Refers to inquiries regarding charging capacity for each furnace number.

The target inquiry is the same for the same furnace number charge because samples are generated at each stage such as in the converter furnace, after tapping the converter, RT-UT, LT, CC, etc. It says whether or not.

On the other hand, the analysis manipulator is as described above, but is shown diagrammatically as shown in FIG. Further, an example of the overall system configuration is shown in FIG. 3, and a processing configuration of the analysis automation process computer is shown in FIG. 4.

Since these details can be easily determined, their explanation will be omitted.

In the above example, the discharge traces are visually observed by the operator, but full automation can also be achieved by detecting discharge trace abnormalities through image processing.

〔Effect of the invention〕

As described above, according to the present invention, a sample can be supplied to an analyzer in a well-procedure and accurately.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of the apparatus for carrying out the method of the present invention, Figure 2
3 and 4 are block diagrams of the processing device, FIG. 5 is a plan view of an example of a stock table, and FIG. 6 is a diagram showing the state of discharge marks on a sample. DESCRIPTION OF SYMBOLS 1...Emission spectrometer, 3...Store/cuttle, 4...Manipulator, 7...Camera station, 8...Label printer 9A, 9B...Collection belt conveyor, IOA , IOB...NG sample mounting stand. Figure 3 Figure 3

Claims (1)

[Claims] (1) Based on the presence or absence of a sample to be analyzed temporarily placed on the stock table, the presence or absence of an analysis failure sample placed on the analysis failure sample holder, and the identity of the sample,
1. An emission spectroscopic analysis method, characterized in that the sample is transferred between a stock table, a spectrometer, an analysis failure sample stand, etc. by automated means while determining the processing priority order of the sample.