The Korean National Para Ice Hockey Team playing against the U.S. national team in 2014 (Source: Aljazeera)

Para ice hockey, previously called ice sledge hockey, may not be common to everyone, but many consider it the highlight of para-athletic events. A team is composed of athletes who have a physical impairment in the lower part of their body, so instead of wearing skates, they glide through the rink on ice sledges (also known as sleds).

Watch any para ice hockey match, and it will be surprising to see that there is as much, if not more physical contact than regular ice hockey. Although these athletes may be limited in their everyday movement, on ice, they appear to be flying on their sledges.

The thrill and intensity of the sport are just some of the reasons why steel-company POSCO continually supports the Korean national team and para-athletics in general. It is also why POSCO joined the mission to create specially-made sledges for the Korean National Para Ice Hockey Team.

Ice Sledges Make or Break the Match

Due to the nature of the sport, the sledges have to withstand various forms of physical contact such as body checking. They also have to move in complete unison with the players, almost like an additional limb, because it determines the player’s’ steering and control of direction.

So, the sledges have a direct impact on performance.

Some members of the Korean national team have been playing for over 18 years, and they know better than anyone the importance of their sledges in relationship to performance and results. Ideally, a sledge has to be light yet strong, able to absorb shock from external contact and fit the athlete’s body perfectly.

A Korean National Para Ice Hockey Team player fights for the puck during a game against Japan.

All of the sledges the Korean ice hockey team used were previously imported from Canada. The sledges were heavier and often could not withstand harsh contact. On average, 5 to 7 sledges were damaged during a game and required repair work.

That’s why Massive Blade, a company that specializes in ice sports equipment, decided to make the sledges domestically in Korea. When POSCO heard that Massive Blade was looking for a light and strong material to build the sledges out of, researchers jumped on board the mission to produce these new and improved sledges.

The First Domestic Sledge, Built with POSCO’s Technology

This first-of-its-kind sledge was made with POSCO’s new high-strength magnesium alloy, high-manganese anti-vibration steel and stainless steel. Meaning, they replaced the heavy aluminum alloys that made up the previous sledges with POSCO’s advanced materials.

Magnesium

Magnesium has a high specific strength (also known as the strength-to-weight ratio) and is about two-thirds lighter than aluminum. The downside is that it is challenging to mold, so it is not widely used despite its phenomenal lightweight and specific strength qualities. This is where POSCO’s Research Institute of Industrial Science & Technology (RIST) stepped in to provide a solution

RIST has been researching magnesium and its production technology for application in mountain bike frames and car frames for 3 years. As a result, RIST also owns the necessary equipment and machinery for processing and producing magnesium parts. In order to develop their technology for processing magnesium, RIST researcher Lee Mok-Young said they had to first identify the characteristics of the material, maintain the proper heat treatment temperature and optimize the accompanying tools for molding magnesium. The molding tool is a new, innovative technology that ultimately decides whether magnesium can be shaped into the necessary parts.

RIST researchers came up with a processing technology to increase the moldability of magnesium

When the processing technology is applied to magnesium, it results in a material that is approximately twice as moldable as regular magnesium. As a result, magnesium was able to be applied to sledges for the first time ever.

High-Manganese Anti-Vibration Steel

High-manganese anti-vibration steel is another material that helped enhance the sledges. They applied it to the parts of the sledge with the most exposure to contact such as the front bar and bucket brackets to prevent injuries as well as to minimize structural deformities. High-manganese anti-vibration steel is widely used in buildings for shock absorption, and according to Kim Sung-Gyu, director of the Gwangyang Steel Commercialization Promotion Team, the anti-vibration properties of the steel make it possible to contain vibrations from external force within the metal. This means less shock is transferred to the players, minimizing the risk of injury.

A technician applies high-manganese anti-vibration steel to the front bar

Stainless Steel

Finally, POSCO’s stainless steel was applied to the sledge blades. There are two blades at the bottom of every sledge, and each blade is 3mm thick. It is important to use high-strength steel so that the thin blades can stay sharp and carry the weight of the sledge and player throughout the whole game. Plus, the blades have to hold the frame 8.5cm to 9.5cm above the ice so that the puck can pass through freely under the sledge. The length of the blade also cannot exceed one-third of the total length of the sledge.

Stainless steel blades are sharpened and reattached

That’s a lot of work for just two blades, and that’s why POSCO’s stainless steel was applied. Besides the fact that it has optimal high-strength, hardness and ductility qualities, stainless steel is corrosion resistant, an important factor for blades constantly exposed to water and ice.

Korea’s National Para Ice Hockey Team Gets Wings

Aside from choosing the right materials, POSCO’s RIST researchers spent the most time trying to understand the difficulties and discomfort the para-athletes face on the sledges. It is true the sledges have to be light and strong, but there are further limitations to gauge precise movement and direction during an intense and dynamic game.

That’s why the researchers scrapped the project in its final stages multiple times to start over. During the process, they made numerous models and constantly talked with the players, coaches and the director. Not only that, the RIST researchers also consulted POSCO’s engineers about technical issues related to the materials. The finished product is really the accumulation of intensive research and running back and forth between the rink, the RIST research lab and POSCO offices.

National team members are adjusting to the new, upgraded sledges

The result of their collaboration is a sledge that is 34 percent lighter and capable of absorbing greater shock than the previous sledges.

The players are already adjusting to their new equipment and it won’t be long until they can test them out in an actual match. POSCO will continue to support para-athletes and the Korean National Para Ice Hockey Team so they can focus on their intensive training without worrying about sledge malfunctions and injuries.

TO (a safe) VICTORY!

Cover photo courtesy of Team USA Hockey.

POSCO hopes the team will be able to fully invest in training and perform to the best of their ability at the upcoming games.

The Rise of the Korean National Para Ice Hockey Team

While the Korean National Para Ice Hockey Team is now receiving more funding and exposure, their journey was not always smooth-sailing. As seen in the 2014 Korean documentary Parallel, the Korean para ice hockey athletes have faced many difficulties along the way. But, in facing their adversity with hard work, perseverance, and determination, they have found success as they prepare for the upcoming 2018 Winter Games.  

2010 Winter Games in Vancouver, Canada

Until 2010, sledge hockey at the Winter Games had been dominated by Canada, the U.S., Norway, and Sweden. Starting at the Winter Games in Vancouver in 2010, the world started to notice the potential of Korean para-athletes as they finished in 6th place in their first Winter Games. Following the Vancouver Winter Games, the team continued their success from 2011-2013 at multiple international tournaments. These wins helped add momentum and build expectations for the team as they prepared for the Winter Games in Sochi.

Korea defeated Sweden 4-2 in the 2013 Para Ice Hockey Qualification Tournament held in Torino, Italy (Courtesy of Svenska Parasportförbundet Sveriges Paralympiska Kommitté)

2014 Winter Games in Sochi, Russia

In 2014, Korea’s ice sledge hockey team returned to the Winter Games. In their first match, Team Korea defied expectations with a 3-2 defeat of the hometown team and ultimate silver medalist, Russia.  However, after that monumental win, multiple team members suffered a series of injuries that helped lead to subsequent losses to the US, Italy, and the Czech Republic. Although the team won their 7th place match 2-0 against Sweden, players could not hide their disappointment.

Dongshin Jang, who scored the final goal in the match against Sweden, cited the team’s many injuries as one of the reasons for defeat adding, “We tried our best to win the medals in order to be recognized and get the support we need. We did well considering our conditions, but I cannot hide my disappointment.”

2018 Winter Games in PyeongChang, Korea

In 2018, Team Korea will have a home rink advantage as the games come to PyeongChang. As they prepare to participate in the 2018 Winter Games, they have shown great progress. Just one year after their humbling defeat at Sochi, Team Korea defeated Poland 15-0 at the IPC Ice Sledge Hockey World Championships, the most points ever scored in a World Championship game.

Korea’s ice sledge hockey team pose for a team photo at the 2013 Para Ice Hockey Games held in Torino, Italy. (Courtesy of Luc Percival)

Team Korea’s training is in full swing as they are aiming to be one of the top five teams in the 2017 World Championships A-Pool. Trials will be held in Gangneung, Korea, from April 11-20, 2017. If Team Korea takes one of the top five slots, it will directly qualify for the PyeongChang 2018.

POSCO is supporting Team Korea to allow them to focus on their training for 2018. Team Korea has already succeeded far beyond expectations and POSCO is honored to be supporting such a talented team.   

Skating on Steel Sledges

Para ice hockey began at a rehabilitation centre in Stockholm, Sweden, during the early 1960’s. It was started by a group of Swedes who wanted to continue playing hockey despite not being able to skate anymore. Para ice hockey made its official debut on the world stage during the 1994 Lillehammer games.

Sledges for para ice hockey, made of steel, are set on two blades usually made of tempered steel. (Courtesy of Randykwapis)

Instead of skates, players use double-blade sledges that are typically made of steel. They are 0.6m to 1.2m in length with a curved front end and a seat for the athletes. The sledge was modified to be set on two 3 mm blades, which are usually made of tempered steel that allows the puck to pass underneath the sledge. Players use two sticks to propel the sledge over the ice and to hit the puck. The design, weight, and strength of the player’s equipment are critical. The ability for the sledge to withstand the weight of the players and strong impacts is critical. The steel used in the sledge can make a crucial difference to their performance as it impacts control on the ice and the durability of the blades.