Utilisation rate equals profitability
improvement in utilization rate
machines connected to Machine Track
The Finnish Okmetic is one of the ten largest silicon wafer manufacturers in the world. In its area of expertise, i.e. silicon products that are suitable for sensor technology, it’s the most important company in the world. Although many significant silicon wafer manufacturers are facing serious sales and cost problems, Okmetic is expanding its production.
Production manager Jari Ahtola says that the decision to expand is well-founded. It’s based on a clear picture of the previous operations of the factory and on knowing which pieces of machinery play a central role in the whole. The utilisation rate of the existing production is known very well, so it has been possible to draw up some rather precise calculations for the investments; the evaluation of the performance of the factory hasn’t been based on mere opinions.
Production development in the lean spirit
“In 2003, the systematic development of the operations started, following the principles of lean production. The analytical monitoring of the production started at the end of 2007 when a piece of machinery started using Machine Track. It immediately showed that the cutter used for the silicon crystals failed to use 30 percent of its true capacity,” Ahtola says.
The factory only had one crystal cutter and its utilisation rate was a critical factor for the whole production. The operating staff felt that a new cutter was needed alongside the old one. Only when measurements were made, it was revealed that almost a third of the capacity was wasted because of irrational practices.
Now there are 122 machines connected to Machine Track. “The greatest benefit offered by the Machine Track is the monitoring of the utilisation rate. It gives us a fact-based calculation about whether the existing capacity has been exhausted and whether the need for investment is genuine. When it came to the cutter, the general feeling was that its capacity had been fully exploited,” Ahtola says.
Okmetic has rationalised its practices in many ways, not only through the use of Machine Track. Ahtola says that with many machines the utilisation rate has increased by up to 20 percent. However, monitoring still reveals a lot of details that could be boosted, even after everything is already believed to have been tuned up to the maximum.
The impact of product groups on the production rate will also be revealed, which in turn uncovers the optimal production series and production order. This especially helps with predicting the capacity. In other words, Production is able to give Sales accurate information about the production schedule, and any delays in use – such as delays caused by set-up times – are known well in advance.
Okmetic is the seventh largest silicon wafer maker in the world.
Founded in 1985.
MES-system for improving productivity
Do you want to learn more about our solutions?
Please contact us:
+358 44 713 0477
Read more about our success stories
One of the main reasons for choosing ARROW was that the software solutions responsible for machine control in production and for service functions in maintenance operate together and in connection to each other. Quick error messages sent directly to the maintenance department set repair work into action immediately. Additionally, Machine Track provides the maintenance department with information about machines causing the most problems and about the seriousness of the flaws with regard to the entire system.
Read success story
Machine Track is a valuable tool in the daily operations of Metsä Wood. When the factory management and production workers come to work, Machine Track provides them with an instant view of the evening and night shifts’ performance.
Read success story
”At first we monitored the running and efficiency of the new can line by using a clock and transferred the results into an Excel table. However, this method of measuring took too much time. With Machine Track, the capacity increased from 26500 cans to 33000 cans per hour.”
Read success story