▶ Product name : Track Rollers used in the crawler type of heavy equipments
▶ Production line : 3500 ton and 4500 ton large press lines.
▶ Product size : Outer diameter up to 320mm, weight up to 60 Kg
▶ Technical features : patented Open/Close Forging Method is applied to the red-marked part to form a depressed shape. This method saves material and process costs and increases product strength by forming grain flow lines.
▶ Patent name : A Forging System using Open and Close Type Mold.
- A round mold is divided into 4 parts which form a concave part, and open and close using special springs by wider than the size of the concave to enable the product to be ejected.
▶ Product name : Yoke Shaft
▶ Production line : 5 inch , 7.5 inch Upsetter
▶ Product size : Max. gap between the horns 200mm, max. shaft length 1,000mm
▶ Technical features : Apart from the conventional process where primary rough forming is processed in an upsetter and then finished in a hammer forging machine, the entire process is completed by forging in the upsetter.
▶ Patent name : An upsetter mold and method which can form the yoke of long yoke shaft in a single process. Conventionally, U-shaped yoke and shaft are separately produced and jointed by friction welding. In the new method, the yoke is completely formed in a forging upsetter without need of further process.
▶ Product name : Recoil Spring Yoke
▶ Production line : A forging having asymmetric profile
▶ Product size : Width 250-340mm, height 120-200mm
▶ Technical features : This product has been produced by casting, but now, by forging. The Recoil Spring Yoke is for excavators. The product has been produced by casting which inevitably undergoes low yield ratio of about 60% and high defect ratio of about 10%, and further, delivery would have to be delayed due to the problem in material supply. We have developed the forging process for this product, securing the stability of production in addition to cost saving, quality improvement, and short delivery lead time. The purchasing department of our customer has selected this one of their 6-Sigma improvement themes.
