Edit this companyThis company is listed at

Kovolis Hedvikov a.s. - Tremosnice

Hedvikov 1, 538 43 Tremosnice, Czech Republic
Phone +420469619100, Fax +420469619103
Chamber of Commerce: 61058041
www.kovolis-hedvikov.cz

Do you like to see similar companies?

About us

Company description

Kovolis Hedvikov is an aluminium die cast foundry, having its own development and design department, tool shop, and machining facility as well. With more then 500 employees and production at a level of 5000 tons per annum it becomes one of the leading foundries in the Czech Republic. There are more then 20 die casting machines, locking force starting at 250T, moving up to 1050T. There are two tool shops part of Kovolis Hedvikov, with the yearly output of more then 120 moulds. Machining shop being equipped with 30 CNC centres, machining majority of our products. Certain applications being sub-assembled in-house. . The company has been managed to meet all Customer’s requirements, at this moment especially for automotive industry, which is around 90% of our production portfolio.

Location

News items

No news in this moment

Products

Products

The production is split into the three major fields:

1) Tooling shop (+ design)
In the tool shop we produce mainly pressure casting dies, but also trimming tools, modelling equipment, special tools & fixtures.

We support the production as well as the design, with the use of the CAD/CAM graphic systems - Solidedge and the 3D system UNIGRAPHICS (possibility of importing files in STEP, PRT and IGES format)

The tool making itself is carried out on modern equipment with progressive machining technology (HSC MAHO DECKEL, triaxis planer Hurco, 3D CNC milling machine for carbon electrodes production, electro-eroding machines).

For checking and control of dimensional precision and quality, we use among others, tricoordinate (CMM) machines 2x WENZEL and DEA equipment.

The tools and dies are produced from highly tempered steel so as to prolong life-service.

The approximate sample turnover time is related to the complexity of the castings, and is from thee to six months. Presently we produce approximately 5-6 new moulds with adequate accessories every month, but this does depend on complexity.

2) Pressure casting shop
Our company is equipped with four gas and two electric furnaces. Material is standardly de-gassed, and a gas level is being evaluated.

We are capable of supplying pressure casting of weights from 5g up to 4 kg. Depending on the requirement of our customers, we can ensure the tightness of the castings at pressures of 1MPa-1.6MPa.
The finishing of the castings is done by varying methods on trimming presses, in vibrating drums (Rössler), by grit blasting (Disa) or sometimes manually (grinding operations, filling).

On customers' request we also carry out surface finishing with paint or eloxal/anodising processes.

The aluminium castings are produced on presses from the companies TOS/RTS (shot controlled), Buehler and Vihorlat Snina, with a locking force ranging from 250 to 750 tons.

The TOS/RTS machines are fully automated press machines (incl. shot control system, automatic feeding and robotics withdrawing).

Vacuum and squeeze casting processes to improve the inside castings' structure were sucessfully introduced.

For the inspection of the castings' structure, an X-ray machine Seifert has been installed.

Aluminium alloys used in production:

Standard EN 1706

EN AC-46000 AlSi9Cu3(Fe)
EN AC-47100 AlSi12Cu1(Fe)
EN AC-44300 AlSi12(Fe)
EN AC-43400 AlSi10Mg(Fe)

3) Machining shop

On customers' request we also carry out the machining/grinding either on conventional machines, special dedicated or CNCs (10x CNC centers - Cincinnati, Okuma, Haas; 10x CNC lathes - OKUMA, Takisawa, Index, Haas

We also make partial subassemblies on some of our products.

Leakage tests (evaluating air drop) can be performed on request. We can ensure the impregnation according to the customers' specification.

Competences

Materials

  • Aluminium (alloys)

Certificates

  • TS 16949
  • ISO 9002