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In this article, AZoM and Solge CEO Kim Tae-heon talked about the merger of COXEM's SELPA system.
Coxem has developed a new automated large-area particle analyzer based on a scanning electron microscope (SEM) that can be used to analyze and classify particles by size and element.
Solge is a company that switched to SELPA, a South Korean company. The company is using the equipment to analyze engine oil and other substances, and to check for debris in the oil. The CEO of Solge explained the benefits of SELPA.
Solge is the only commercial laboratory in Korea that can analyze fluid cleanliness. The customer requires fluid cleanliness analysis for two purposes. The first is component cleanliness management, and the other is machine cleanliness. Analysis is necessary for monitoring conditions.
SEM-EDS has many effective methods to achieve these two goals.
In terms of component cleanliness management, pollution sources and more accurate size distribution information can be obtained. In terms of machine condition diagnosis, the location of the fault (through element analysis) and the severity of the fault (through the size and shape of the particles) can be evaluated.
We use automatic microscope diagnosis system and automatic laser particle counter to diagnose the cleanliness of parts.
In addition, rotating disk electrode (RDE) spectroscopy and automatic laser particle counters have been used for machine condition diagnosis through particle analysis.
Existing SEM equipment is limited to diagnosing particles in a smaller, more specific area rather than a large area. In order to meet the international standards for parts cleanliness (VDA19 and ISO16232), it should be possible to perform large-area particle analysis.
Due to limitations, it is difficult to replace the existing optical microscopes used in the field of parts cleaning. However, the SELPA system helps overcome this challenge.
We visited RJL Micro & Analytic in Germany to introduce them a new component cleanliness diagnostic equipment and a new optical scanner. However, to our surprise, we were introduced to Coxem.
COXEM successfully developed the world's first large-area SELPA system, and we decided to introduce it into our work. We became one of COXEM's customers and the Korean sales representative for COXEM component cleaning applications.
We were initially scared because the SELPA system was our first commercial purchase. However, we quickly realized that this was not a problem.
The SELPA system fully complies with VDA19 and ISO16232 standards, and complies with existing component cleanliness standards.
We are a Korean partner of Wearcheck Group, a global fluid diagnostic service alliance. We are currently commercializing this device as a SELPA system to use it in component cleanliness and machine condition diagnostic applications.
Take the automatic laser particle counter as an example. It is mainly used to diagnose the cleanliness of parts. The particle detection range is limited (4 microns to 70 microns), and air or moisture other than solid particles may interfere with the measured value.
In the case of a microscope, there is no limitation, and large-area particle counts can be performed, but there are limitations in combining with EDS to identify the type of contamination.
For RDE spectroscopy, which is mainly used to diagnose the condition of the machine, it measures the composition and quantity of wear particles, but does not provide information about the particle size.
However, in the case of the SELPA system, by combining SEM and EDS, it provides information about the shape, size, quantity and composition of wear particles, thereby realizing effective machine condition diagnosis.
As mentioned earlier, we imported SELPA equipment from Germany instead of South Korea.
In the case of large-area cleanliness analysis using SELPA equipment, a verification and/or calibration system for calculating the number and size of particles needs to be developed.
For example, it is necessary to provide a dedicated SRM for the SELPA system, because we may receive a request for certification of the SELPA system from customers.
Using the SELPA system, we can accurately ask customers what is causing the customer’s poor cleanliness and what is causing the fluid contamination of the equipment in operation.
In fact, for the same reason as the above answer, the customer is very satisfied with the SELPA system diagnostic report.
As mentioned earlier, the existing SEM is limited to particle analysis of specific particles or specific areas, but the SELPA system is the only available SEM equipment in the field of component cleaning because it can analyze particles collected in the entire patch area.
ISO16232 and VDA19 require size and quantity analysis of all particles collected in the membrane filter.
This is very useful for machine condition diagnosis, parts cleanliness and air pollution source analysis, although this is not our professional field.
As a Korean partner of Wearcheck Group, a global fluid diagnostic service alliance, we want to introduce SELPA into our alliance.
In the current spectroscopy operation, the device will be used to analyze the type and amount of metal powder in the lubricant, but it does not provide information about particle size or help determine the severity of wear. SELPA is a very good solution to overcome these limitations.
Tae-Heon graduated from Qiming University (chemical engineering) and CEO of Solge Corporation. He is a member of the Fairness Evaluation Committee of the Korean Machine Diagnosis Certification Association and a professional lecturer in the machine condition diagnosis course of the Korean Machine Diagnosis Certification Association. As part of this position, he provided lubrication for the training institutions of Korea Gas Technology Corporation and Korea Western Electric Power Co., Ltd.
This information comes from materials provided by COXEM Co. Ltd., after review and adaptation.
For more information about this source, please visit COXEM Co. Ltd.
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