COATING DIVISION

  • Low priction
  • Press Mold
  • Die Casting Mold
  • Injection Mold
  • Cutting Tool
  • Decoration
  • Limitations of traditional heat-treating methods make it difficult to more efficient combustion levels required in modern automobiles. Dongwoo HST offers newly developed world-class low-friction coating that could allow cars to run under such severe conditions and has the largest capacity in Korea for this application.

APPLICATION

  • + Automotive parts

PROPERTY IMPROVEMENT

  • + low friction, better fuel efficiency
  • + enhanced durability, sticking
  • + Noise reduction, improved power

COATING RECOMMENDED

  • + DLC, Si-DLC, W-DLC
  • + CrN, TiAlCN

Valve lifter (Tappet) Engine rig : Gasoline 3.3 L

Friction level decrease in engine Rig Test Non coating 2.5, DLC coated 1.6 40% down
Valve Lifter[Tappet]
  • - Engine rig : Gasoline 3.3 L
  • - Coating : DLC
  • - Friction coefficient : 0.05
  • - Friction reduction : 40% down
  • - Fuel efficiency : 0.8% up
 
Automotive Engine Block Die Casting Mold Coating
※Test comdition:ADC12,700도,3~27hr,(SKD61)
  • Nano-composite coating provides more favorable sticking properties to extend service time with fewer defects

APPLICATION

  • + Al, Mg diecasting
  • + Insert, core pin etc.

PROPERTY IMPROVEMENT

  • + Longer service life
  • + Better Lubrication
  • + Less Heat check, pitting

COATING RECOMMENDED

  • + TiAlCrSi(C)N, CrON, TiCN, PN