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Artikkelin 1 kuva

Implementing a concrete mixer for the mining industry requires seamless cooperation on design, manufacture, assembly, and installation

Agnico Eagle Finland Oy’s Kittilä mine has already produced more than two million ounces of gold. It is Europe’s largest gold mine. Simetek Works Oy implemented a continuous-feed mixer to meet the Kittilä mine’s needs. It is a concrete mixer that mixes cement, water, and tailings into concrete. The end product is pumped underground to Read more

Artikkelin 2 kuva

Simetek has grown steadily over the years

Simetek Works Oy’s founder Kari Roivainen found himself unemployed after his fixed-term employment as a maintenance manager at Kemira Oy, now Yara Suomi, ended as a result of the recession in the 1990s. Roivainen decided to set up his own company as a man with a toolbox, and began to carry out maintenance jobs at Read more

Artikkelin 3 kuva

Article in Savon Yritysuutiset

Read an article about our services (in Finnish) on page 57 of the Savon Yritysuutiset newspaper.

Artikkelin 4 kuva

A fine-particle plasma cutting machine boosts Simetek’s production

Last year, Simetek purchased a new fine-particle plasma cutting machine (Thermcut CD3500), which is used to cut steels that are sent for further processing in machining and welding – or are sent directly as cuts to the customer. The procurement of the machine relates to a significant development project that is under way in the Read more

Artikkelin 5 kuva

Managing director Roivainen also works in the machine shop if required

Simetek Works’ managing director Timo Roivainen has spent all of his holidays at work at Simetek since he was 15 years old. Later on, he took over responsibility for the company. Like his sister, Satu Räsänen, Timo Roivainen was involved in the construction of the machine shop hall building, but then worked a number of Read more

Artikkelin 6 kuva

The implementation of drive rails for an intermediate thickener required Simetek to have competence with mangles and laser scanning

Simetek provided new drive rails and a pulling car for the intermediate thickener at Elementis Minerals’ talc plant in Outukumpu. Collaboration began in late summer 2020, when Elementis noticed the need for new drive rails and a pulling car for its intermediate thickener at its Outokumpu plant, as the existing ones were nearing the end Read more

Artikkelin 7 kuva

Simetek modernises the largest conveyor at Yara’s mine area

A KA1160 conveyor deployed in the late 1970s at Yara’s Siilinjärvi mine required modernisation as it was still using the original drive gears and power industrial gearbox. Simetek Works implemented a modernisation project from mechanical engineering to installation. The KA1160 transports crushed stone from the gyratory crusher to a day silo, from where it is Read more

Artikkelin 8 kuva

We refurbished Kuusakoski’s car crusher rotor

The discs were made of HB400 wear-resistant steel, and the axle was made of quenched and tempered steel. A work-hardening coating was welded onto the discs, after which they were machined to suit the axle’s tolerances. The rotor’s assembly had to consider the interference fit between the disc and axle by heating and cooling the Read more

Artikkelin 9 kuva

Introducing our experts: Ari Hakkarainen, driver and warehouse keeper

“I continually develop the in-house logistics to make things smoother” Driver and warehouse keeper Hakkarainen made the transition from baker to metal industry worker, and now makes sure that work runs smoothly at Simetek. Hakkarainen came to Simetek in 2008 after becoming ill with occupational asthma in his work as a baker. He first worked Read more

Artikkelin 10 kuva

We serviced an energy industry gearbox

We carried out regular maintenance on an energy industry gearbox in early summer. We inspected the condition of the gear, replaced its bearings and seals, and repainted the surfaces of the gearbox. Before we installed int back into place, we test-ran the gearbox at Simetek. The test run checked the operating temperature, seal, and function Read more

Artikkelin 11 kuva

Introducing our experts: sheet metal worker Hannu Petjala

“At Simetek, almost all commissions are almost unique” Hunting and fishing enthusiast Hannu Petjala has worked as a sheet metal worker at Simetek for 18 years. The old hand is happy to help younger workers if he notices that they have problems completing a job. Petjala likes that at Simetek he can begin each commission Read more

Artikkelin 12 kuva

Installation of changes to steel structures in froth flotation cells for GTK Mintec’s test plant

We installed steel structure changes in froth flotation cells for GTK Mintec’s Outukumpu test plant. Watch the video to see how everything came together.    

Artikkelin 13 kuva

Introducing our experts: Jouni Leskinen, engineer

Simetek has developed a lot over the years. Jouni Leskinen has worked at Simetek for twenty years, and has seen the company go through different phases while working in a couple of different roles. Leskinen is a qualified sheet metal worker and at Simetek he works in maintenance and installation. He is responsible for lead Read more

Artikkelin 14 kuva

We manufactured a gas duct curve and underflow Y-manifold

We manufactured a gas duct curve from acid-resistant steel and an underflow Y-manifold from duplex steel for Agnico Eagle Finland’s Kittilä mine. At the same time we supplemented the customer’s warehouse with a few corresponding parts.     

Artikkelin 15 kuva

Simetek’s paint shop also carries out subcontracted work

Simetek’s paint shop operates in connection with Simetek’s machine shop, and is one of the largest in Siilinjärvi. It carries out surface treatment work for its own projects and for subcontracted work. The paint shop pays particular attention to quality assurance. Before painting, we check the object for any welding defects, spatter, or anything else Read more

Artikkelin 16 kuva

Introducing our experts: surface treatment worker Sanni Tikkanen

Simetek’s paint shop deals with a variety of work   Surface treatment worker Sanni Tikkanen officially began work at Simetek in autumn 2018, but before that she had become familiar with the company by working as agency staff for a year. Her job description includes the pre-treatment, surface treatment, and patching of materials. Tikkanen enjoys Read more

Artikkelin 17 kuva

Maintenance of a Hammel crusher

Simetek received a Hammel crusher for maintenance. The crusher is used to crush construction and renovation waste. Similar crushers are also used to crush rocks. Maintenance engineer Ringo Markkanen from Simetek explains how first the crusher’s transmission was dismantled and the damage was assessed. The damage was deemed to be so massive that it was Read more

Artikkelin 18 kuva

Simetek’s development project aims at growth and profitability

Simetek has initiated a project that will involve carrying out investments and development procedures. These procedures will make the company’s operations even more efficient. They will guarantee a faster, higher quality, and more cost-efficient service for customers overall. “We began operations in 1994 and the first hall space, encompassing one thousand square metres, was completed Read more

Artikkelin 19 kuva

Introducing our experts: Satu Räsänen, finance and HR

Swapping a career as a nurse for finance and HR at a family-owned company.   Satu Räsänen worked as a nurse for ten years until her father Kari Roivainen, who founded Simetek, and her brother Timo Roivainen, who now leads the company, encouraged Räsänen to handle the family-owned company’s office admin and payroll. She left Read more

Artikkelin 20 kuva

Introducing our experts: Aki Karvonen, production manager

Aki Karvonen likes his work to provide challenges and the opportunity to develop   Aki Karvonen has been responsible for Simetek’s machine shop production for three years. He also carries out quotes and sales work, and takes care of projects. “I’m also responsible for coordinating welding. In practice, that means that I keep an eye on Read more

Artikkelin 21 kuva

Pickling improves the properties of stainless steel and aluminium

Pickling is a surface treatment method for stainless steel and aluminium. It aims to restore a material’s appearance and corrosion-resistant properties after processing, such as welding, iron contamination, thermal cutting, heat treatment, or hot straightening.  In the aforementioned cases, the heated area in the material reacts with oxygen in the air, which results in a Read more

Artikkelin 22 kuva

Introducing our experts: Henri Takkunen, machinist

Machinist Henri Takkunen’s main responsibility is the use of the CNC-controlled milling and boring machine. He enjoys the challenge of working with large objects.   Henri Takkunen has ironclad experience with machining. He machines objects of all sizes that require manual or CNC-controlled machining. Takkunen mainly works with the CNC-controlled milling and boring machine, but sometimes Read more

Artikkelin 23 kuva

A CNC-controlled milling and boring machine makes it possible to handle complex objects

Simetek uses a CNC-controlled milling and boring machine, or broaching machine, which makes it possible to work with large, heavy metal objects.  The milling and boring machine can be used to drill, thread, even out surface faces, machine, and straighten lines. Examples of finished products include creasing rolls, axles, consumables, reels and screws, and parts Read more

Artikkelin 24 kuva

Occupational safety at Simetek exceeds requirements

At Simetek, occupational safety is considered in all areas and work phases. During installation and maintenance work, occupational safety often exceeds the customer’s requirements. Machine shop work can be risky if you don’t have appropriate protective gear and safe, suitable working methods. At Simetek, noone needs to work with worn or broken protective gear, and Read more

Artikkelin 25 kuva

Industrial installation and maintenance work requires solid experience

Simetek provides a full range of industrial installation and maintenance work; sites can include sawmills, pulp mills, chemical and energy plants, and mines. Our engineers and maintenance personnel have a wealth of experience that can help even in unexpected situations. Different industries have their own special characteristics that must be considered in installation and maintenance Read more

Artikkelin 27 kuva

We lathed a tail end drum for a conveyor

The conveyor’s tail end drum ready for lathing.          

Artikkelin 28 kuva

We repaired a mixer shaft

We repaired a mixer shaft. Before the repairs, crack inspection were carried out on the shaft, and other required repairs were recorded and reported to the customer. The shaft was repaired based on observations. The material was super-duplex steel.         

Artikkelin 29 kuva

We serviced a screw conveyor

We serviced a screw conveyor. Servicing improved the materials of the screw flights and the shaft seals. We also made manufacturing drawings for the conveyor. The screw conveyor is made from stainless steel.

Artikkelin 30 kuva

We delivered a staircase assembly

We delivered a staircase assembly for personnel access.

Simetek Works Oy

Jukolantie 11
71800 Siilinjärvi, Finland
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