PARADOWSCY AMP S.J., the leading manufacturer of intake and exhaust valves for internal combustion engines, celebrated its 60th anniversary in 2005. Nowadays it is one of the few that can really be called a EUROPEAN MANUFACTURER.

The valve factory is located in Poland. It provides the lion’s share of the domestic market and is a supplier of products to the assembly line for Andoria-Mot, Daewoo, FIAT, STAR, Zetor factories. Gradual introduction of new technologies is allowing to increase the production potential by several dozen times.

The motto of the company is “the highest quality for an affordable price”. Thanks to this, it was possible to conquer the national market and deploy a powerful expansion into foreign markets.

In 1998, in order to produce and distribute valves in the American, Asian and European markets, close cooperation with the Canadian company AMP began.

PARADOWSCY AMP S.J. company closely cooperates with the Swiss valve manufacturer Inter-Valves, with other manufacturers of spare parts, representing their interests in Central and Eastern Europe.

Universality, prompt response to changing market needs and, above all, maintaining the highest quality of products – these are the principles that guide the company throughout its activities.

On the achievements of the firm testify:

• Certificates of quality and conformity (German TUV – ISO 9001: 2000, Russian, Ukrainian, etc.);
• Prestigious awards LIDER PRZEDSIBIORCZOZCI, received in 1999 and 2003;
• The title of SOLIDNA FIRMA, received in 2002;
• EUROPEAN MEDAL FOR QUALITY, received in 2003.

Dynamic development of PARADOWSCY AMP S.J. – is the first of all, an achievement of the company stuff – competent and creative people; secondly, this is due to the implementation of the technologies of the highest quality with the application of the best grades of valve steel.

Since the valves as part of the engine are subject of a large and varied load, their quality is the key to reliability and durability of the engine. In this case, the requirements that are imposed on the valves (especially graduation) are so diverse and contradictory that it is necessary to find compromise solutions. Manufactured by PARADOWSCY AMP S.J. of high-alloy steel valves meet the following characteristics:

• high corrosion and chemical resistance at elevated temperatures;
• high endurance and necessary hardness throughout the operating temperature range;
• high toughness index in hot and cold condition;
• good conductivity of heat;
• durability;
• high yield stress at elevated temperatures;
• good cutting ability;
• the possibility of carrying out heat treatment (for example, hardening the tip of the rod);
• small coefficient of heat expansion;
• optimal chemical composition.

Compliance with all requirements for the production of valves, both intake and exhaust, PARADOWSCY AMP implements with:

1. Usage of steel produced at the best metallurgical plants that have ISO 9002 certificates.
2. Production by the method of electric heating and forging.
3. Imparting on special equipment the required geometric parameters to the valve blanks, and (in parallel) detection of faults.
4. Cutting, carried out on copying lathes and machines with automatic control.
5. Grinding on circular grinding machines and automatic grinding machines.
6. Hardening of the tip of the rod by induction hardening and fusing with stellite.
7. Surface hardening of the valve stem by chromium coating or nitriding.

PARADOWSCY AMP S.J. gives 12-month warranty for its products without mileage limitation.

In order to protect the products, starting from 2004 all valves, that had been produced at the PARADOWSCY AMP S.J. plants, are engraved with the AMP laser logo, each valve is packed in an individual strong paper packaging, each sticker or outlet valve has a proprietary label with a protective hologram.

Everything is made to ensure that the customer could purchase a truly original product AMP – the product of the MOST NEW TECHNOLOGIES, the product of the highest quality.

Inviting to cooperation, PARADOWSCY AMP S.J. guarantees the highest quality of its products, timely delivery and stability of price.

As of 2007 AMP Paradowscy S.J. introduced motor valves gas nitrated in the process of impulse ion nitriding both to the domestic market as well as to foreign ones. This process is the most modern metal nitriding process worldwide. It is used in surface processing of surfaces of particular elements of machines, plant and tools under severe loads using the glow discharge generated by a pulsating electric field. This process makes use of the phenomenon of impulse discharge in thinned gas for saturation of metal surfaces with nitrogen. Ion nitriding is a modern form of gas nitriding , in which causes no threat for the natural environment.

The process is performed at low temperatures (from 400˚C, which is one of several advantages of ion nitridnig) and at reduced pressure. The most important reason for which this process is performed is to obtain high hardness values of nitride surfaces. The range of temperatures form 400 to 600˚C allows controlling the hardening process. The highest hardness values are obtained through nitriding within the range of 400 to 500˚C. The nitriding process is performed in a vacuum tank at a predetermined pressure. The processed charge becomes the negative end of the discharge (cathode), while tank walls – positive end (anode). Under the applied direct current (400 to 700V) the cathode surface emits electrons, which acquire energy in the electric field necessary for ionization of gas particles. Through collisions the ionized atoms and particles are accelerated and hit the cathode surface. Ions that bombard the surface lead to knocking out of iron atoms, alloying elements, coal, nitrogen and electrons indispensable for keeping up the glow discharge. Iron atoms bind witch active nitrogen atoms and settle on the surface in the form of nitrides and saturate the surface coats with nitrogen in the diffusion process. Through ion nitriding a layer of nitrides is produced witch non-porous monophase surface coat that assures homogeneity of physical and chemical properties. It is possible to control precisely the coat structure, which allows effective processing of larger elements with high dimensions related requirements and guarantees obtaining significant operational durability.

There is a growing variety of materials that may be hardened by this method, which allows obtaining durability increase. Ion nitriding very effectively enhances resistance to attrition and galling of nitrided coats. Application of the ion nitriding technology in engine valves improves their durability within the system of valve spindle-valve guide and reducing adhesion of carbon deposit in the head area. Through the application of this modern technology a corrosion resistant coat is achieved and general durability of valves is enhanced.

Application of the plasma ion nitriding technology produces valves with high mechanical properties – hardness, resistance to galling, attrition and wearing while neutral impact on the environment.

Exclusive rights for the implementation of valves and valve guides manufactured at PARADOWSCY AMP S.J. factories and intended to the cars of VAZ brand, is owned by AMP + LLC, Kiev, Ukraine.

Website: http://www.amp.eu