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GPM

What is GPM(Granulated Powder Metallurgy)?

GPM(Granulated Powder Metallurgy) is a new technology that use general PM (Powder Metallurgy) Process with Granulated Fine Powder but is applicable to higher mechanical properties.
  • Granulated Fine Powder
  • Powder Metallurgy Process
  • GPM

Advantages

  • No Kneading and Debinding processes.
  • Mechanical properties are same as MIM by using the same fine poweder
  • Reduce sintering temperature because of higher green density.
  • Less sintering deformation because of lower shrinkage.
MIM
  • Kneading
  • Injection Molding
  • Debinding
  • Sintering
  • Finish Machining
GPM
  • Pressing
  • Sintering
  • Finish Machining
Shorter process10~20%
Mechanical Properties Comparison
Mechanical Properties Comparison
Properties POWDER METALLURGY GPM MIM
Relative Density 90 98% 98%
Relative tensile strength 70% 100% 100%
Surface Roughness 2㎛ 0.4~0.8㎛ 0.4~0.8㎛
Design Flexibility Medium Medium High
Production Capacity High Volume High Volume High Volume
Diversity of Materials Medium High High
Available Weight 0.1 to 1kg 0.1 to 1kg 0.1 to 150g
Materials Cost Low Medium High
  • GPM is suitable for parts with better mechanical properties than PM.
  • GPM is able to make simpler design and large parts than MIM.

Process

  • 1
    Granulation
    Fine Powder → Granuled Powder
  • 2
    Forming Process
    Implementing product features (models)
  • 3
    High Density Sintering Process
    Metallic coating (sintered)

Application

Applicable GPM to Slide block (Small)
  • Elimination original machining process is possible →
    Minimization of machining process → Cost reduction
  • Reduction of manufacturing cost by eliminating Debinding process
  • No difference of measurement result of dimension spread between machined parts and GPM parts
    (Production feasibility is guaranteed)
Cost Saving
Other applicable item
  • Sliding Block(Large)
  • Vane Ring & DISC
  • Cover Ring
  • Rod-Steering
  • Base Ring
  • Gear
  • Bushing
  • Vane Lever
  • and so on…