Dies, roller shells and beaters are European standard products supplied by Phat Nghia Company with the support of foreign technical experts.
Every tiny part of the die has, at some stage, been produced with a single machining operation.
A mid-sized die with 4 mm holes will have as many as 10,000 holes. Add to that a countersink and a counter-bore, and the result will be 30,000 machining operations, each one conforming to the accuracy of the pattern. After drilling and tapping bolt holes, milling keyways, turning up the basic shape of the die blank, cleaning, drying, vacuum hardening, tempering and finally finishing to the fitting sizes, the entire production of the die has gone through nearly 40,000 separate machining, processing, and handling operations.
Supplier offers a variety of chrome steel alloys.
By varying the content of vanadium, chromium, manganese nickel, and carbon, we can select a material that suits every individual requirement for a wide range of operating environments.
With our technical support, customers take great care in specifying size, shape, and pattern of the required die holes. We meticulously follow these instructions and manufacture the dies with accuracy and repeatability on the basis of an automated production process.
Our experienced operators establish heat treatment programs for dies going into vacuum hardening ovens. The heat treatment process is of utmost importance as it guarantees the product uniformity. Supplier has invested substantially in the most modern hardening technology to produce a long-life and high-performance die.
Selected high-quality steels with fine grain structures give high strength and durability.
Carefully following the drill pattern, the countersink is machined into the die track. Countersink sizes are selected to increase the pelleting performance.
A fast and accurate process for producing highly polished extrusion holes. Supplier pioneered this technique in the early 1980s and now produces the finest pelleting dies in the world by optimizing drilling speed and controlling lubricants.
2. Roller shells
Roll shells operate under extremely harsh conditions. Massive forces are transferred from the die face through the bearings to the roll support shaft. It is vital that dimensions are accurate and that the hardening process is of a high standard.
Phat Nghĩa’s Supplier has developed roll shells to match the excellent performance of its dies. Roll shells are available in several patterns, e.g. dim-pled and fluted. We will help the customer to select the correct design for the application.
Profiled and hardened on our premises, the beaters have established an excellent, worth-the-money reputation. Now in the third generation of steels, beaters combine good wear resistance properties with strength and durability. ANDRITZ manufactures beaters of any size or shape to fit all hammer mill models.