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Modern Foundry Focused on Quality TENZA cast, a.s. is a specialized center for zinc casting using high-pressure die casting and zinc injection molding technologies. Thanks to state-of-the-art equipment and many years of expertise, we deliver precision die castings and molded components that meet the highest standards of accuracy, strength, and aesthetics. Casting Technology and Machinery Our production is built on a combination of tradition and cutting-edge technology. We operate casting and injection machines from renowned manufacturers, particularly Frech, a global leader in high-pressure die casting technology. We also utilize multi-slide technology, enabling the production of complex and geometrically intricate parts with high repeatability and minimal manufacturing tolerances. Technologies Used: High-pressure zinc die casting – a fast and efficient method for the serial production of precision castings. Zinc injection molding – ideal for small, highly detailed components. Stamping/Pressing – suitable for manufacturing technical and structural elements requiring high strength. Advantages of High-Pressure Zinc Die Casting Zinc castings are widely used in industry due to their unique properties: High dimensional accuracy and excellent surface quality, Ability to produce complex shapes and detailed structures, High strength and wear resistance, Cost efficiency in serial production, Easy surface finishing (painting, electroplating, powder coating). Typical Products Our die castings and molded components are used across a broad range of industrial sectors: Automotive industry – structural and functional parts, interior components. Electrical engineering – housings, terminals, connectors. Mechanical engineering – high-strength technical components and parts. Consumer goods industry – design components and decorative elements. Why TENZA cast, a.s.? Our foundry combines advanced technological facilities, precision casting and injection machinery, skilled personnel, and strict quality control. As a result, we are able to provide customers not only with castings, but with comprehensive solutions – from mold design and production to final surface finishing.

TENZA cast, a.s. is a specialist in zinc alloys and high-pressure die castings. We process alloys such as Zamak, ZnAl4Cu, ZnAl4Cu3, and ZnAl4 in accordance with ČSN standards 423558, 423560, and 423562. We manufacture precision zinc castings for the automotive, electrical engineering, and mechanical engineering industries. Precision and Quality of Zinc Castings Zinc alloys (Zn) are among the most widely used materials in high-pressure die casting. Thanks to their mechanical properties, high strength, and ability to reproduce fine details, they are applied across a broad range of industrial sectors. The most commonly used alloys belong to the Zamak (Zamac) group and their modifications, manufactured in compliance with both international and Czech technical standards. Most Commonly Used Zinc Alloys Zamak (ZnAl4Cu1, ZnAl4Cu, ZnAl4Cu3, ZnAl4) Alloys containing aluminum (Al) and copper (Cu), Excellent strength and dimensional stability, Suitable for complex and highly detailed castings, Easy surface finishing – electroplating and painting.   Specification and Designation Z410, Z400, Z430 (též Zn 410, Zn 400, Zn 430 / ZP 410, ZP 400, ZP 430), Corresponding Czech technical standards: ČSN 423558 – ZnAl4Cu1, ČSN 423560 – ZnAl4Cu3, ČSN 423562 – ZnAl4. Properties and Applications of Individual Alloys Alloy Standard (ČSN) Chemical composition Typical applications Properties ZnAl4Cu1 (Zamak 410) ČSN 423558 Zn + 4 % Al + 1 % Cu Precision castings, electrical engineering components High strength, good dimensional stability ZnAl4Cu3 (Zamak 430) ČSN 423560 Zn + 4 % Al + 3 % Cu Mechanical engineering parts, automotive components Higher hardness, increased wear resistance ZnAl4 (Zamak 400) ČSN 423562 Zn + 4 % Al Design parts, decorative elements Good ductility, easy surface finishing   Advantages of Zinc Alloy Castings Excellent mechanical properties, Capability to produce highly complex shapes, High dimensional accuracy with minimal tolerances, Long service life, Efficient serial production.   Zinc Castings in Practice Our zinc castings are primarily used in: Automotive industry – brackets, mounts, functional components, Electrical engineering – housings, terminals, connectors, Mechanical engineering – structural elements, gears, levers, Consumer goods industry – decorative and design components. TENZA cast, a.s. – Your Supplier of Zinc Alloys We are specialists in zinc alloys and high-pressure die castings. With modern technology and in-depth knowledge of applicable standards, we deliver products that meet even the most demanding requirements.

The process does not end after casting – finishing operations are decisive for the final quality and reliability of the product. At TENZA cast, we specialize in advanced mechanical, abrasive, and thermal methods for machining and cleaning castings. Thanks to state-of-the-art technology and the expertise of our specialists, we guarantee smooth surfaces, burr removal, and precise dimensional parameters in accordance with customer requirements.   Our Finishing Technologies Tumbling Tumbling is one of the fundamental mechanical processes used for the efficient removal of scale, impurities, and surface irregularities from castings. Through a controlled process, a uniformly smooth surface is achieved, ready for further use or surface finishing.   Shot Blasting Shot blasting is a fast and effective surface cleaning method using abrasive particles propelled by compressed air. This process removes scale, residual molding material, and surface corrosion, while simultaneously improving adhesion for subsequent coatings such as paints or surface treatments.   Sandblasting Sandblasting enables precise mechanical cleaning of castings using finer abrasive media. The result is a smooth and uniform surface, ideal for components with aesthetic or functional quality requirements.   Thermal Deburring (TEM) TEM – Thermal Deburring is an advanced technology in which burrs and residual material are removed by controlled combustion of a gas mixture. The result is a completely clean and safe surface, particularly suitable for complex geometries where conventional mechanical methods are insufficient.   Thermal Burr Removal This process ensures the removal of burrs even in hard-to-reach areas, increasing the safety and functionality of castings. It is the ideal solution for components with demanding geometries where precision finishing is essential.   Why Choose TENZA CAST for Finishing Operations A wide range of methods – from conventional mechanical processes to advanced TEM technology. An experienced team of specialists focused on precision and quality. Capability to machine complex shapes and intricate details. Strong emphasis on the safety and functionality of final products. Do you want to ensure that your castings meet the highest quality standards? Contact us and take advantage of our professional finishing services.

In the processing of castings, machining plays a crucial role. Thanks to advanced CNC technologies, we ensure high precision, strict adherence to specified tolerances, and reliability even for the most complex components. Our machine equipment enables efficient serial production as well as custom single-piece manufacturing. Horizontal Turning – State-of-the-Art Precision Technology The horizontal turning center forms the backbone of our machine park. It enables: High-precision machining of rotational components, Processing of zinc castings in various sizes, Achievement of smooth surfaces without the need for additional finishing. This type of machining is ideal for serial production of parts requiring precise geometry and high-quality surface finish.   CNC Machining – The Modern Manufacturing Standard Our CNC machines enable fully automated and highly repeatable processes. This ensures: Consistent high quality, even in large production runs, Precision within required tolerances, Capability to machine complex shapes and fine details. CNC technology guarantees speed, efficiency, and long-term stability of the manufacturing process.   Typical Machining Operations As part of the finishing process for zinc castings, we offer a wide range of machining operations, including: Turning, Milling, Drilling and boring, Thread cutting (tapping), Fine finishing operations to achieve required tolerances and surface quality.   Advantages of Machining at TENZA cast Advanced CNC machines and horizontal turning centers. High-precision machining within tight tolerances. Flexibility – from prototypes to large-scale serial production. Experienced operators and manufacturing engineers. Are you looking for a partner who can provide precision machining of zinc castings according to your specifications? Contact us to learn more about our CNC machining capabilities.

Producing a high-quality casting is only the first part of the overall process. At our Adamov foundry, we provide customers with comprehensive services, including assembly and final completion. Thanks to this added value, we deliver not only individual castings, but fully functional units ready for immediate use.   Assembly – Integrating Components into a Perfect Whole Our skilled specialists carry out component assembly with a strong focus on quality, functionality, and reliability. We ensure: Precise joining of metal and non-metal parts, Installation of additional elements and fittings, Assembly of mechanical and functional units according to customer specifications. Completion – A Finished Product from a Single Source Our completion services include all steps required to deliver the final product. This means the customer receives not only a casting, but a fully assembled part or complete functional module. Advantages of Our Completion Services Time savings and reduced logistics costs, Quality control at every stage of the process, Option for direct delivery to the customer’s production lines. Examples of Assembly and Completion Processes Assembly of smaller mechanical modules, Installation of bearings, bushings, or threaded inserts, Completion of moving parts and mechanical subassemblies, Packaging and preparation for immediate use or shipment. Why Choose TENZA cast for Assembly and Completion Comprehensive casting solutions – from production to final product, Qualified personnel with cross-industry experience, Strong focus on precision and long-term reliability, iIndividual approach tailored to customer requirements. Do you need not only a casting, but a fully assembled unit? Contact us and take advantage of our assembly and completion services.

Zinc alloys are characterized by excellent inherent properties, which can be further enhanced through appropriate surface treatment. Surface finishing not only increases corrosion resistance, but also ensures an aesthetic appearance and additional functional properties according to customer requirements. At TENZA cast, we provide a wide range of advanced surface treatments – from basic mechanical methods to sophisticated electroplating processes and cathodic dip coating (KTL).   Mechanical Surface Treatments Before applying protective coatings, the casting surface is typically pre-treated: Vibratory tumbling with polishing media – to achieve a smooth surface, Abrasive blasting – to ensure uniform cleaning and surface homogenization. These processes create an optimal base for subsequent coating layers. Electroplating and Alloy Coatings Electroplating processes provide a high level of protection against corrosion and mechanical wear. The most commonly used methods include: Acid and alkaline zinc plating – universal corrosion protection, ZnNi (zinc-nickel alloy coating) – high resistance in aggressive environments (e.g., automotive industry), ZnFe (zinc-iron alloy coating) – a cost-effective combination of corrosion protection and performance. Alloy coatings are particularly suitable for components exposed to high humidity, chemical influences, or long-term mechanical stress. Passivation – A Protective Barrier Against Corrosion Standard passivation – basic protection that extends surface service life, Thick-film passivation – enhanced resistance to moisture, salts, and chemically aggressive environments. Passivation increases the effectiveness of electroplated coatings and significantly improves the durability of castings.. KTL – Cathodic Dip Coating Cathodic dip coating (KTL) is an advanced painting technology in which the component is immersed in a bath and coated with paint through an electrochemical process. Advantages of KTL: High and uniform coverage, even in cavities and hard-to-reach areas, Excellent corrosion resistance, Smooth and aesthetically appealing surface finish, Possibility of combination with additional coating systems.   Decorative Surface Finishes For customers who also emphasize visual appearance, we offer: Chrome plating (bright or matte), Nickel plating, Powder coating in customer-specified colors, Additional customized surface effects.   Advantages of Surface Treatments at TENZA cast Broad portfolio of technologies – from standard to highly specialized processes, Increased resistance to corrosion and mechanical wear, Aesthetic and decorative enhancements, Adaptation to specific operating conditions, Comprehensive solutions including surface preparation and final quality inspection. Would you like to increase the service life and durability of your castings? Contact us and choose the surface treatment that best meets your requirements.

A high-quality casting begins with a high-quality mold. At TENZA cast, we specialize in the production of molds and tooling for high-pressure die casting, ensuring maximum precision, long service life, and reliable operation. With advanced technologies and an experienced team, we design and manufacture injection molds and related tooling precisely according to customer requirements..   Mold Design – From Concept to Implementation Each mold is developed based on a detailed analysis of requirements and comprehensive engineering design. Optimization of casting geometry for high-pressure die casting. Design of parting lines, gating systems, and cooling circuits. Simulation of mold filling and solidification to achieve maximum quality. The objective is to minimize the risk of defects and ensure high production repeatability. Mold and Tool Manufacturing – Precision in Every Detail We use state-of-the-art toolmaking technologies and materials from verified suppliers. Hardened tool steels with high resistance to wear and thermal stress. Precision CNC machining and Electrical Discharge Machining (EDM). Surface treatments of molds to increase durability and ensure easy demolding.   Service Life and Reliability Molds and tooling from TENZA cast are designed for long-term operation under demanding die casting conditions. High resistance to thermal shock. Dimensional stability under repeated production cycles. Minimal maintenance requirements.   Mold Inspection and Maintenance To ensure long-term functionality and performance, we also provide comprehensive mold inspection and maintenance services: Regular condition checks of molds, Repair and refurbishment of worn components, Modernization and modification of molds according to current production requirements. These services significantly extend mold service life and help reduce overall customer costs. Advantages of Cooperating with TENZA cast Complete service from design to serial production. Advanced mold and tooling manufacturing technologies. Precision injection molds with long service life. Flexibility in modifications and revisions. Are you looking for a reliable partner for the production of molds and tooling for high-pressure die casting? Contact us and obtain a mold solution that ensures flawless production of your castings.