Advanced high-strength steel ore unloading system wins 2017 Swedish Steel Prize

June 14, 2017
Source: ASM International

SSAB, Stockholm, announces that the 2017 winner of the Swedish Steel Prize is Kiruna Wagon of Sweden for its Helix Dumper, a highly durable and far more efficient ore-unloading wagon than other ore wagons on the market. The final design included both Strenx structural steel and Hardox wear-resistant steel.

"Kiruna Wagon has successfully updated a good idea and used high-strength steels to turn it into a brand new, superior wagon solution," says Eva Petursson, Chairman of the Swedish Steel Prize jury and head of SSAB's Strategic R&D.

Kiruna Wagon's Helix Dumper is a dumper wagon system for long-haul rail transport and efficient unloading of minerals. Advanced high-strength structural and wear-resistant steels made it possible to design lightweight wagons combined with a stationary Helix terminal for on-the-fly rotary unloading. The ingenious solution has an unloading speed of 25,000 tons per hour, which is twice that of other systems.

Compared with other systems, a complete unloading system for the Helix costs 1/7th of what a rotational wagon costs. In addition, the Helix exploits part of the potential energy of the ore's mass to push the wagon forward as it unloads. This means no extra energy is required, with much less dust and almost no noise.

The winner of the 18th Swedish Steel Prize will receive a statuette by the sculptor J├Ârg Jeschke and a cash prize of $15,500. 

The other finalists were Fermel from South Africa, JMG Cranes from Italy, and Wabash National from the United States.


Subject Classifications

Industries and Applications | Mining and Metals Processing

Materials Properties and Performance | Friction and Wear

Materials Properties and Performance | Mechanical Properties

Metals and Alloys | Carbon and Alloy Steels