We have a machine shop and we organize material supplying (casting, forging, fabricated steel…), machining, surface treatment, assembly workmanship and logistic services for the products in accordance with technical drawing and samples that are delivered from customers.

Manufacturing at KOVOHUTĚ HOLDING DT, a joint-stock company, division Kovohutě Čelákovice, consists of three technological operations which proceed in order. There is also a series of preliminary and subsidiary operations involved. At the beginning, there is raw material input and the process ends with an output of semi-products ready for additional processing (semi-finished products). The basic technological operations are melting and casting, extrusion, and drawing.

Melting and casting is when an alloy of specified chemical composition is prepared as rolled semi-product. Electric induction furnaces are used for melting, and some special alloys are manufactured in a gas-fired crucible. Samples for material analysis are taken before actual casting. After cooling the castings are divided into various lengths according to the pressing shop's requirements.

Extrusion is a very demanding and expensive process and needs perfect equipment, high-quality tools, and accuracy within determined parameters. Extrusion is carried out by hydraulic extrusion presses from ingots, which are heated in electric induction furnaces at temperature ranging from 700 to 1000 degrees centigrade. Bars, tubes, wires, and sections in straight lengths or coils can be extruded. Easily oxidable metals, for example copper, are extruded into water. Dimensions, surface quality, and flatness are checked.

Cold drawing is a process in which raw material is drawn through a die at normal temperature. A die or punch is a tool which is made from steel, sintered carbide, or from other materials. Its dimensions and geometry and surfaces have to be very precise. The surfaces must be absolutely smooth in order not to mar the semi-product. The friction when drawing should be minimal.

In the drawing process, material properties change. The strength is higher, but the quality of the drawn product is reduced. The structure is adjusted and becomes finer. The drawing process is limited to a certain extent. Exceeding limits could damage the structure of most metals. Cracking can occur as well as tearing. Only a few metals are exceptions (e.g., pure copper). Its hardness is limited, but even then it is possible to draw it without danger of damage.

Drawing can be combined with rolling for a more regular shape. For this operation rolling machines are used. They can be pilger rolling machines or ordinary ones producing flat or grooved rolls. Drawing conveyor lines are often used for this purpose. They link several production steps one after the other. Conveyor lines save expense and lessen the dangers of handling material; they also increase labor productivity.

We already work with 5-6 foundries and many machining plants located in Konya. The total practicable capacity of our foundries is about 30.000 tons/year. There is no problem on the materials. We are able to supply you all materials including Ni-Rezist, stainless steel, GJS, SiMo etc. All of the foundries and our business partners have ISO 9002 certificate and some of them have ISO/TS 16949 certificate.
The molding systems are sand molding, furan recine molding and shell molding. The molding has been done as hand molding, semi automatic horizontal molding machine, semi automatic vertical molding machine and Disamatic vertical molding line without flask. The size is 200 to 900 x 500 to 1100 x 200 to 400 mm.

All melting process will be done with electrical furnaces. So; we able to control material and we also have spectral analyzing facilities. We also have sand laboratory, hardness testing, microstructure checking and metallurgical test abilities. I mean we are able to supply your needed parts on the international standard frames.

In regard to additional process which can do; they are pattern making (wood, aluminum, araldite); core production (cold box, hot box); sand blasting; grinding; heat treatment; painting, protecting etc. We also able to supply you finished products after the fully machining operations and all gears with gear cutting. You can see brief information from our website.

In regard our customers; we already have been supplying many European companies. We know the European companies' purchasing process. We already have been supplying to them flywheels, exhaust manifolds, water pipes, pressure plates; pulleys, brake discs, hubs, brake drums, bearing caps etc.

Regarding to CNC machining process; we have many CNC machine tools, the lists are at the annex. As you can see there are many different type tools. Finally; I would like to say we can cover your all kind request about the casting and machining and we can cover all relevant quality requirements. I am sure that we can answer your all kind requirements.

Kupro has over 15 years experience in outsourcing in the metal and plastic in Eastern Europe with Poland, Romania and the Baltic states as key countries.
The most important areas are in metal:

All mechanical operations such as turning, fezen and drilling in all types of metal
Welding and construction products such as railings of balconies

The main areas are in the plastic:

Production of products using injection molding, blow and extrusion technology etc.
Manufacture of molds for these systems.