CN101393127A - Method for rapidly identifying industrial pure titanium by spectrometer - Google Patents
Method for rapidly identifying industrial pure titanium by spectrometer Download PDFInfo
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- CN101393127A CN101393127A CNA2008102318140A CN200810231814A CN101393127A CN 101393127 A CN101393127 A CN 101393127A CN A2008102318140 A CNA2008102318140 A CN A2008102318140A CN 200810231814 A CN200810231814 A CN 200810231814A CN 101393127 A CN101393127 A CN 101393127A
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Abstract
The invention relates to a method for quickly identifying industrially pure titanium by a spectrometer, which belongs to qualitative material identification in the technical field of rare non-ferrous metallic titanium processing, which is to excite a sample to be identified under the arc light, and to take the existence of an aluminum wire in a purple region of visible light of a displayed chromatogram as the basis for judging whether the sample is industrially pure titanium or titanium alloy by utilization of the spectrometer, wherein the sample is titanium alloy if the aluminum wire exists and is industrially pure titanium if the aluminum wire does not exists. When the method is used for distinguishing grade of the industrially pure titanium and the titanium alloy, the method basically takes the existence of aluminum element as the basis for judgment. TA0, TA1, TA2 and TA3 belong to pure titanium, and do not contain other main alloying elements except for the substrate-titanium; therefore, the pure titanium and the titanium alloy can be separated by observation of the existence of the aluminum wire on a steeloscope. The method has the advantages of quickness, economy and practicality.
Description
Technical field
The invention belongs to the discriminating of rare metal titanium processing technique field, particularly pure titanium.
Background technology
At present, in smelting and process that the titanium material is produced, industrially pure titanium accounts for 80%, and wherein block defective material accounts for 70% again.If these piece defective materials can be recycled well, then play very important effect to reducing production costs, saving material.
Past, why can not the block residual titanium of effective recycling, its one of the main reasons is to differentiate pure titanium to come out from batch mixing exactly.
According to reports, after Japan adopted sampling, calcining, the oxide film color that detects by an unaided eye was distinguished industrially pure titanium and alloy thereof.Adopt this method speed and unhappy, and relatively require great effort poor reliability again.Some producers of the U.S. and Britain generally use portable grenz ray fluorescent spectrograph and thermoelectric comparator to differentiate titanium and alloy thereof in residual titanium material processing procedure.
From the eighties, part titanium processing enterprise begins to use chemical drop and portable steeloscope method to distinguish industrially pure titanium and titanium alloy.With regard to these two kinds of schemes, conditions such as the scope of application of steeloscope method, speed, cost are better.Particularly nearly 2 years, the steeloscope method had new progress again.This experimental technique full name is--differentiates the experiment of pure titanium and some titanium alloy fast with simple and easy spectroscopic methodology, promptly from the block residual titanium that has mixed the trade mark, selects pure titanium with the portable steeloscope of 34W.
Summary of the invention
Objects of the present invention provide a kind of fast qualitative and differentiate pure titanium and some titanium alloy, to improve the recycling of titanium defective material, reach the purpose that reduces production costs, saves material.
Based at present at home in the mass-produced alloy designations of titanium processing enterprise, all contain aluminium component and industrially pure titanium does not contain these characteristics of aluminium, when distinguishing the technical pure titanium or titanium alloy, have or not the aluminium spectral line to exist and the spectral line difference has been distinguished with regard to passable as long as observe with spectrometer.
Specifically, differentiate the method for industrially pure titanium fast with spectrometer, it is under arclight other sample to be checked to be excited, and use spectrometer to have or not aluminum steel to make to judge the foundation of industrially pure titanium or titanium alloy in the violet region of visible light by the chromatogram that presents, and it is titanium alloy that aluminum steel is arranged, and no aluminum steel is an industrially pure titanium.
Install additional on spectrometer and take the photograph spectral apparatus, the spectral line of taking the aluminium spectral line obtain titanium alloy respectively and industrially pure titanium is as the standard spectral line, with sample spectral line and standard spectral line contrast judgement industrially pure titanium or titanium alloy.
The present invention is when distinguishing pure titanium and titanium alloy, and total average discriminating speed is 230 pieces/hour, false drop rate 0.2%.Because countries in the world all are tending towards and need not be processed into product by 100% residual titanium reclaimed materials now, but with a large amount of titanium sponge (as more than 70%), mix with a spot of residual titanium, to remedy the characteristics of and unevenness high owing to residual titanium impurity.Therefore, result of the present invention can be satisfied with the requirement of producing reality fully.
The inventive method has been used for producing, has less expensive, characteristics fast.
Description of drawings
Fig. 1 is the spectral line (Ti679) of aluminium in the titanium alloy.
Fig. 2 is the spectral line of TA1.
Fig. 3 is the TA2 spectrum.
Fig. 4 is the TA3 spectrum.
Embodiment
Specific implementation process:
One, experimental apparatus and material
1, spectrometer: the portable steeloscope of 34W type
2, excitation source: electric arc, spark generator
3, auxiliary electrode: graphite for spectroanalysis, φ 8 * 300mm;
4, other: the sand paper and the grinding wheel (removing material surface oxide layer and dirt) that do not contain aluminium.
Two, experimentation:
When distinguishing the technical pure titanium or titanium alloy trade mark, have or not as foundation with aluminium element basically.TA0, TA1, TA2, TA3 are the industrially pure titanium class.Can they again contain other main alloying element except that the matrix titanium, so as long as the aluminium spectral line occur on the observation spectrometer, just can distinguish industrially pure titanium and titanium alloy.
When seeing that Zymography is differentiated aluminium, select electric arc shelves condition of work for use, voltage 220V, 10 amperes in electric current, pole span 3～4mm with visual.Through exciting, what can present wash rice clearly in the visual field respectively organizes spectral line, then by means of instrument dispersion curve and drum reading, just can identify the line wavelength position of the aluminium element of surveying.
Two stronger aluminum steels are arranged in the purple district of visible light, and its wavelength is respectively
With
The arc stiffness of these two aluminum steels is strong (2000～3000), excitation potential low again (3.14eV).Know that by the element spectral line table of being searched in the spectral line zone, China does not produce the interference of feature main alloying element (Sn, Mn, V, Mo, Zr, Fe, Cr, Cu, the Nb) spectral line of alloy to these two aluminum steels.The intensity of observing these two aluminum steels with spectroscope, and with the titanium alloy of known brands in the intensity of aluminum steel carry out visual comparison, can identify the technical pure titanium or titanium alloy reliably.
Three, experimental result and discussion
1, on the portable steeloscope of 34W, installs additional and take the photograph spectral apparatus, obtained the spectral line (seeing Fig. 2, Fig. 3, Fig. 4) of aluminium spectral line (see figure 1) in the titanium alloy and pure titanium (TA1, TA2, TA3) in the steeloscope photographs.Like this, from now on reference to this standard pattern, just the range of application that was used for the authentication equipment of steel industry originally can have been advanced a step---promote the use of titanium or titanium alloy and differentiate the field.
From Fig. 2,3,4, its spectrogram does not have the difference of what strictness, and just the impurity content difference all belongs to the industrially pure titanium class.
2, distinguish in industrially pure titanium and the titanium alloy in the practical application at discriminated union, often run into impure higher TF1 and expect interference the result.TF1 belongs to the category of pure titanium basically, and its highest permission aluminum content is 0.5%.In order to distinguish pure titanium and titanium alloy thereof, must grasp discriminating to the TF1 material.Used test portion is the TF1 ingot, and its aluminum content is respectively 0.05%, 0.1%, 0.2%, 0.3%, 0.43%, 0.57%.With spectroscope 7 kinds of TF1 alloys of above-mentioned aluminum content are differentiated that repeatedly the result of discriminating is: in the TF1 alloy of 7 kinds of different contents, when aluminium content more than or equal to 0.43% the time, just can see the aluminium spectral line.Aluminium content then be cannot see the aluminium spectral line less than 0.43% o'clock.Therefore, the minimum detectability of having found out aluminium is 0.43% (seeing Table one).
Table one
| Trade mark ingot number number | TF1 81018-3 | TF1 81018-1 | TF1 81018-4 | TF1 81017-1 | TF1 81017-2 | TF1 81015-1 | TF1 81016-2 |
| A1 content % | 0.05 | 0.1 | 0.2 | 0.3 | 0.43 | 0.53 | 0.57 |
| The discriminating situation | Can not differentiate | Can not differentiate | Can not differentiate | Can not differentiate | Can differentiate | Can differentiate | Can differentiate |
3, comparison and detection test:
As the auspicious usefulness of mark, its trade mark is: TA0, TA1, TA2, TA3, TF1, TA4, TA5, TA6, TA7, TC1, TC2, TC3, TC4, TC7, TC9, TC10, Ti-679, Ti-230, Ti32Mo with collected 1000 samples of 18 trades mark; Planform has ingot, pipe, rod, plate, sheet etc.These samples all have the trade mark, and ingot number or chemical analysis are differentiated 1000 standard specimens being finished with spectroscope, and four times average discriminating speed is 213 pieces/hour, and false drop rate is 0.1% (seeing Table two).
Then, other gets 1000 block of material, and its shape, the trade mark are similar to above-mentioned 1000 blocks of material.Get about 250 samples at every turn, test repeatedly, average discriminating speed and false drop rate that will be each perform record.Drawing the average velocity of differentiating several times at last is 247 pieces/hour, and average false drop rate is 0.3% (seeing Table three).
1000 sample identification results of table two
| Differentiate ordinal number | Discriminating speed (piece/hour) | Average false drop rate (%) | Remarks |
| 1 | 202 | 0.3 | Recombined sample |
| 2 | 210 | 0 | ″ |
| 3 | 220 | 0.1 | ″ |
| 4 | 220 | 0 | ″ |
| On average | 213 | 0.1 |
Table three pair actual test portion is differentiated situation
| Differentiate sequence number | Discriminating speed (piece/hour) | Average false drop rate (%) | Remarks |
| 1 | 248 | 0 | Sheet material |
| 2 | 240 | 0.8 | Sheet material |
| 3 | 250 | 0 | Rod sheet material |
| 4 | 250 | 0.4 | Sheet material |
| On average | 247 | 0.3 |
Comprehensive above-mentioned two big group identification experiment results draw when distinguishing pure titanium and titanium alloy, and total average discriminating speed is 230 pieces/hour, false drop rate 0.2%
Countries in the world all are tending towards and need not be processed into product by 100% residual titanium reclaimed materials now, but with a large amount of titanium sponge (as more than 70%), mix with a spot of residual titanium, to remedy the characteristics of and unevenness high owing to residual titanium impurity.Therefore, our experimental result can be satisfied with the requirement of producing reality fully.
Problem that exists and the work that will do from now on
1, the differentiation of pure titanium and titanium alloy is that basically differentiation has or not aluminium element, but merely distinguishing pure titanium and titanium alloy with aluminium as unique condition, that just might ignore some other alloy designations that does not contain aluminium as Ti-230, Ti-32Mo, Nb-Ti, Ti-12 etc.In present work, these trades mark still do not put into production in a large number, in present residual titanium removal process, also are not the problems that is imminent and will solves.But want to settle the matter once and for all, we next step should carry out various elements in the alloy designations are carried out spectral line discriminating work, can avoid the appearance of the problems referred to above like this.
2, next stage need be done some and be replenished experiment, finds out being mixed with the discrimination method of above-mentioned several not aluminiferous metals (as zirconium base, molybdenum-base alloy, stainless steel etc.).
3, this discrimination method leans on instrument and manually carries out.During work, eyes are tired.In addition, material also discharges certain waste gas.This method is influenced by the human factor of different ripe refining degree and sense of responsibility also.But before not having discriminating instrument advanced, the band microprocessor, a kind of effective discrimination method of still can yet be regarded as.
Conclusion:
1, on the portable steeloscope of 34W, installs additional and take the photograph spectral apparatus, take the spectral line of the aluminium spectral line that obtained titanium alloy and TA1, TA2, three kinds of industrially pure titaniums of TA3.
2, in the visual qualitative analysis of the portable spectroscope of 34W type, be standard mainly,, can successfully distinguish pure titanium and titanium alloy according to the aluminium spectral line in the titanium alloy to have or not aluminium.The minimum detectability of its aluminium is 0.43%.
3, from the pure titanium and titanium alloy that have mixed the trade mark.This method of pure usefulness is differentiated out the speed of always differentiating can reach 230 pieces/hour, total false drop rate: 0.2%.
4, this experimental technique has been used for producing, has less expensive, characteristics fast.
Claims (2)
1, differentiates the method for industrially pure titanium fast with spectrometer, it is characterized in that under arclight, other sample to be checked being excited, and use spectrometer to have or not aluminum steel to make to judge the foundation of industrially pure titanium or titanium alloy in the violet region of visible light by the chromatogram that presents, and it is titanium alloy that aluminum steel is arranged, and no aluminum steel is an industrially pure titanium.
2, the method for differentiating industrially pure titanium with spectrometer fast according to claim 1, it is characterized in that on spectrometer, installing additional and take the photograph spectral apparatus, the spectral line of taking the aluminium spectral line obtain titanium alloy respectively and industrially pure titanium is as the standard spectral line, with sample spectral line and standard spectral line contrast judgement industrially pure titanium or titanium alloy.
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| CNA2008102318140A CN101393127A (en) | 2008-10-21 | 2008-10-21 | Method for rapidly identifying industrial pure titanium by spectrometer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975750A (en) * | 2010-08-17 | 2011-02-16 | 中国船舶重工集团公司第十二研究所 | Standard substance for TC11 titanium alloy photoelectric spectral analysis and preparation method thereof |
| CN110455793A (en) * | 2019-08-29 | 2019-11-15 | 佛山市安齿生物科技有限公司 | Method for distinguishing pure titanium and titanium alloy |
| CN112033940A (en) * | 2020-08-11 | 2020-12-04 | 江苏常宝普莱森钢管有限公司 | Combined graph type spectrum analysis system and analysis method thereof |
-
2008
- 2008-10-21 CN CNA2008102318140A patent/CN101393127A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975750A (en) * | 2010-08-17 | 2011-02-16 | 中国船舶重工集团公司第十二研究所 | Standard substance for TC11 titanium alloy photoelectric spectral analysis and preparation method thereof |
| CN101975750B (en) * | 2010-08-17 | 2013-04-10 | 中国船舶重工集团公司第十二研究所 | Standard substance for TC11 titanium alloy photoelectric spectral analysis and preparation method thereof |
| CN110455793A (en) * | 2019-08-29 | 2019-11-15 | 佛山市安齿生物科技有限公司 | Method for distinguishing pure titanium and titanium alloy |
| CN110455793B (en) * | 2019-08-29 | 2021-12-14 | 佛山市安齿生物科技有限公司 | Method for distinguishing pure titanium and titanium alloy |
| CN112033940A (en) * | 2020-08-11 | 2020-12-04 | 江苏常宝普莱森钢管有限公司 | Combined graph type spectrum analysis system and analysis method thereof |
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