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Using the Vanta™ XRF Analyzer to Quickly and Accurately Sort Low-Magnesium Aluminum Alloys


Using the Vanta™ XRF Analyzer to Quickly and Accurately Sort Low-Magnesium Aluminum Alloys

Aluminum alloy is the metal of choice for many industries, and aluminum production and recycling continues to grow worldwide. From weight savings to cost per component, when compared with other alloy classes, aluminum is often the material of choice. Aluminum gains its lightweight strength from magnesium, a critical alloying element frequently specified in the composition.

The ability to quickly detect small amounts of magnesium (<1%) in an aluminum alloy has been challenging for handheld X-ray fluorescence (XRF) because of the lengthy test times required to accurately identify specific amounts of magnesium. With hardware advancements and leading-edge Axon Technology, the Olympus Vanta handheld XRF analyzer has greatly reduced the test time needed to display accurate, low-level magnesium (Mg) in aluminum (Al) alloys.

Vanta analyzers excel at producing rapid and accurate Mg results for Al alloy sorting. Tests fewer than 10-seconds long are often sufficient to resolve Mg values in various Al alloys. With previous handheld XRF instruments, these same tests often exceeded 20 seconds.

The graph below shows average results from 10 tests per sample for rapid test times, with the error bars denoting the +/- average of one sigma reported errors from the 10 tests. For Mg > 0.4%, the test times were 3 seconds at 40 kV and only 5 seconds at 13 kV to quantify the shown Mg values. For a Mg level of 0.21%, the testing time in the 13 kV beam increased to 20 seconds. To report the trace level found in AL1100 of 0.03%, the 13 kV beam testing times increased to 60 seconds.

The same extended time results from the graph are presented in the tables below.
The same extended time results from the graph are presented in the tables below.

Results from 380 aluminum grade testing using 3 seconds of a 40 kV beam and 20 seconds of a 13 kV beam.

Mg Concentration Mg Error 1s Al Concentration Al Error 1s
1 0.131 0.052 85.452 0.076
2 0.211 0.053 85.373 0.076
3 0.246 0.053 85.378 0.076
4 0.235 0.053 85.373 0.075
5 0.182 0.052 85.404 0.076
6 0.131 0.052 85.344 0.077
7 0.186 0.052 85.378 0.076
8 0.164 0.052 85.441 0.075
9 0.211 0.052 85.330 0.076
10 0.162 0.052 85.446 0.075
Average 0.186 0.052 85.392 0.076
Assay 0.21

Results from 1100 aluminum grade testing using 3 seconds of a 40 kV beam and 60 seconds of a 13 kV beam.

Mg Concentration Mg Error 1s Al Concentration Al Error 1s
1 0.058 0.023 99.067 0.033
2 0.044 0.023 99.120 0.027
3 0.060 0.023 99.113 0.028
4 0.046 0.023 99.082 0.033
5 0.051 0.023 99.148 0.027
6 0.060 0.023 99.051 0.032
7 0.046 0.023 99.109 0.027
8 0.071 0.023 99.049 0.032
9 0.050 0.022 99.088 0.027
10 0.072 0.022 99.037 0.033
Average 0.056 0.023 99.086 0.030
Assay 0.03

A majority of aluminum grades have magnesium content at or above 0.4%. These samples can be accurately sorted with Mg levels quantified in just 5 seconds of testing with the low-energy beam (beam is on a total of 6 seconds). These results demonstrate that relatively short tests are all that are needed to accurately determine grade variants of low-Mg aluminum.

Olympus IMS
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Vanta 휴대용 XRF 분석기는 IP 65 등급으로 비와 먼지에 대하여 내구력이 강하며, 미국방부에서 낙하 테스트(MIL-STD-810G)를 거쳐 스크랩야드와 같이 거친 환경에서 사용시에 낙하로 인한 파손방지 및 분석기 가동 시간을 극대화된다.
Vanta 휴대용 XRF 분석기는 Olympus에서 만든 내구성이 가장 우수한 모델이다. 뛰어난 내구성과 사용법이 간단하며, 현장에서 실험실 수준의 분석 정확성을 얻고자 하는 고객에게 빠르고 정확한 합금의 강종 파악과 성분원소 분석이 가능 하게한다.
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