Ian Melin-Jones

Ian Melin-Jones

Features proprietary CMOS+T technology / Delivers fastest measurements, lowest limits of detection, longest uptime in its class

SPECTRO Analytical Instruments, the arc/spark innovation leader, introduces the SPECTROLAB S high-performance arc/spark optical emission spectrometry (OES) analyzer for the analysis of metal in process control and research applications. The analyzer represents a real revolution in high-end OES metal analysis — featuring SPECTRO’s proprietary CMOS+T technology and delivering the fastest measurements, lowest limits of detection, longest uptime, and most future-proof flexibility in its class.

Many users of high-end stationary metal analyzers are tasked with identifying and measuring — with exceptionally high accuracy and precision — all the elements and compounds in their incoming, in-production, and outgoing materials. This may also include research on new materials. The new SPECTROLAB S is designed to be the best-performing spectrometer available for primary metal producers — as well as an equally excellent solution for secondary metal producers; automotive and aerospace manufacturers; and makers of finished and semi-finished goods, electronics, semiconductors, and other end products.

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In terms of sample throughput, SPECTROLAB S meets the metal market’s need for ultra-high-speed measurement. Example: when analyzing low alloy steel, it can deliver highly accurate measurements in less than 20 seconds.

The SPECTROLAB S has the world’s first CMOS-based detector system that’s perfected for high-end metal analysis — thanks to SPECTRO’s proprietary CMOS+T technology. From trace elements to multi-matrix applications, it provides high-speed, highly accurate analysis plus the lowest limits of detection in its class — limits previously attainable only with PMT detectors. On some key elements, SPECTROLAB S CMOS+T technology surpasses PMT performance.

Uptime is outstanding. SPECTROLAB’s regular maintenance intervention requirements (spark stand cleaning) have been reduced by a factor of eight.

Calibration is easy and cost-efficient, needing only a single-sample, 5-minute standardization. In most cases, unique iCAL 2.0 diagnostics ensure stable performance from then on — regardless of most shifts in ambient temperature or pressure. Most users save at least 30 minutes a day.

The analyzer’s flexibility ensures that it is future proof. New elements or matrices can be added via a simple software update — eliminating the need for substantial hardware modifications. 

SPECTRO’s familiar, intuitive user interface ensures effortless ease-of-use — even for less experienced personnel. Instead of multiple dialog boxes, a simplified operator view presents clear choices via dedicated toolbar buttons. Tailored application profiles eliminate complicated method development.

The SPECTROLAB S provides both short-term and long-term stability. Unlike conventional analyzers, its sealed, no-purge optical system maximizes light transmission stability, even in the far UV. Its software utilizes sophisticated measures such as online drift correction and iCAL 2.0 temperature compensation for reproducible readings, even over successive shifts or maintenance intervals.

To fit packed laboratory spaces, the SPECTROLAB S features a 27% decrease in footprint over previous models. Conveniences include an easy-reach start/stop button and fixed function keys; a spark indicator light; noise minimization construction; and quick, tool-free access for spark cleaning or air filter changes without opening the main instrument housing.

SPECTRO helps ensure uninterrupted performance and maximum ROI life via unmatched AMECARE services. Machine-to-machine (M2M) support allows proactive alerts, backed up by an on-request PC connection with a remote SPECTRO service expert.

The new SPECTROLAB S high-performance OES analyzer for the analysis of metal in process control and research applications is available immediately from SPECTRO Analytical Instruments. For more information, visit https://www.spectro.com/lab-s, or email This email address is being protected from spambots. You need JavaScript enabled to view it.

Material. Manufacturing. Process. Design. How these three factors interact is crucial for the characteristics of a spring. There is no relevant academic research in this field in Sweden so at Lesjöfors, we develop the knowledge needed to design springs for the harshest environments.

Lesjöfors Industrifjädrar in Hudene, Västergötland, manufacture springs for a wide range of segments. One specialty is customized valve springs for tuned engines. Another customer in the racing and automotive industry is Öhlins Racing, a well-known customer to whom Lesjöfors has delivered front fork springs, shock absorber springs and many other springs for more than 20 years. For a customer base with extreme demands on the springs - regarding both tolerances, finish and performance - it is fundamental to stay at the technological forefront in order to maintain and develop the business.

Hans Andersson och Christian Olsson, Lesjöfors i Herrljunga. Hans Andersson och Christian Olsson, Lesjöfors i Herrljunga.

Stefan Musslinder is technical manager of the Lesjöfors group and reveals the success factors behind an optimal spring:
“The characteristics of a spring depends on three factors; material, manufacturing process and design. Thanks to deep knowledge in all three areas, we can fulfill the specifications from our customer.”

The desired function determines construction and materials

Knowing the nature of a material and from that calculate wire diameter and number of windings is fundamental for the design of an optimal spring. There is a large variety of materials for different applications. Spring steel is among the hardest steel materials available, which is necessary to withstand the high mechanical stresses that occur in the springs of a vehicle. The ever-increasing demands on low weight and small built-in space mean that the springs must endure enormous stresses.

Processes for reducing fatigue

The manufacturing process is just as important as the material, since different treatments can add specific properties. After coiling, the springs are heat treated at 200-450 degrees Celsius depending on the material and type of spring application. In this so-called stress relieving, the internal stresses emit from the coiled spring. Following is the grinding process if the end surfaces are to be flat. This is actually a basic requirement for all compression springs, but is sometimes excluded for cost reasons in less complex spring applications.

For springs that must withstand a large number of load cycles during their lifetime – e.g. the valve springs in a combustion engine – shot peening is an important and critical process. By bombarding the surface with small, hard steel shots, stresses are implemented into the surface of the material. Shot peening can increase the spring’s strength by up to 50 times.

Developing calculation models
The last step - before any surface treatment, marking etc - is presetting, when the spring is fully compressed two or three times. If the spring is correctly designed, internal stresses are created in the wire that work against the load stresses from the spring’s normal use. Since the spring becomes shorter when compressed, the designer must calculate the right length of the spring wire at coiling.
“In order to manufacture optimal springs, we must develop the technology we need to be the market leader. Therefore we have developed the calculation model ourselves, since there are no academic spring research in Sweden today”, says Stefan Musslinder.

Enormous stresses on valve springs
For the particularly exposed valve spring that is subjected to rigorous stress, especially in trimmed motors, additional measures are sometimes required for it to withstand fatigue. Spring kits of two or three valve springs mounted concentrically in each other are often used. This reduces the load on the individual spring and is a well-functioning solution in the limited space where the spring works.

“The requirements are tough straight through, from processes that keep the steel clean, to surface treatment, tempering, grinding and shot peening. The last step is to hot preset the valve spring for it to cope with the extreme heat environment where it will work”, Stefan Musslinder concludes.

Lesjöfors is one of the leading spring suppliers with internationally well known customers. The products are demanded in many markets, in diverse industries. The assortment of springs, stampings and pressings has a unique range, where one of the largest selections of standard springs are combined with high-tech, customized solutions. Lesjöfors has both manufacturing and sales offices in several European countries, Asia, United States and Mexico.

As China-US trade tensions continue to rise, Taiwan-based transportation and freight forwarding specialist Dimerco has supported its customer―a world leader in mechanical steel for renewable energy solutions―in establishing a new manufacturing base in Malaysia, enabling their customer to import equipment, raw materials and produce finished goods for export directly to the United States.

Dimerco planned and managed the entire 6-day logistics process to ship the first 122 steel coils weighing over 3,000 metric tons from port to warehouse, including storage, sample cutting, re-wrapping and packing, as well as handling customs clearance and distribution to the consignee. Since the first shipment in March this year, Dimerco has now shipped approaching 10,000 metric tons of steel coils, with more scheduled. Based on this successful project, Dimerco secured a further contract with this customer for a different product in a second newly built factory last month, in May 2019.

Dimerco coordinated to load on low-bed trailer (left) and Sample Cutting for SIRIM Inspection (right).Dimerco coordinated to load on low-bed trailer (left) and Sample Cutting for SIRIM Inspection (right).

According to a spokesperson from Dimerco, the company previously shipped heavy production equipment for the customer from Suzhou in China to Malaysia. And in the light of the China-US tariff stand-off, the customer has decided to not only build new factory in Malaysia but also ship raw material from South Korea/Taiwan to Malaysia via ocean freight, with Dimerco handling all operations from the destination port. “Our experience and deep market knowledge in this region enabled us to provide a comprehensive and seamless service to our customer who is operating in an unfamiliar market to them,” the spokesperson said. “We transferred the cargo to a warehouse in the Free Zone Authority and worked through the night to achieve a rapid transit time, as well as liaising with trusted partners on utilizing specialist equipment required to handle the heavy freight and dispatching local transportation with low-bed trailers.”

In order to achieve smooth customs clearance, Dimerco’s dedicated team also arranged sample cutting for SIRIM (Standard and Industrial Research Institute of Malaysia) Inspection, arranging for a subcontractor to slight 3 baby coils from the 25 tons mother coil and ensuring each coil was labelled accurately on arrival at port, before inspection.

“This project has allowed us to demonstrate our breadth of services and our commitment to teamwork,” Dimerco’s spokesperson concluded. “We were able to advise our customer on the specific requirements of coil import and transfer in Malaysia, particularly with regards to warehousing, inspection and customs clearance. In addition, we provided onsite monitoring and 24 hour live updates to our customers, as well as delivering basic training on the FZA regulations and SIRIM inspection. Dimerco is delighted that our expert heavy freight handling services have been recognized with a further contract in Malaysia from our valued customer.”

For more information, please visit: http://www.dimerco.com/

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