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Engine · 993-ENG-TURBO-HEAT-SHIELD-IN625-F0-0001

993 left turbo heat shield cover, F0 IN625 concept

ConceptFunctional part

Independent concept of an open shell with integrated bosses for screening an LPBF remanufacture in IN625. PorscheFanatics confirms the PET identity; FVD publishes only the envelope and mass of the left-hand cover 993 123 113 51.

Concept CAD rendering for 993-eng-turbo-heat-shield-in625-f0-0001.
Not a photograph, not a render of a manufactured part, not evidence of fit or function.
Concept CAD orthographic views for 993-eng-turbo-heat-shield-in625-f0-0001.
Front, side and top views of the same concept CAD. Dimensions describe the model; fit on the car remains unverified.

The design

Vehicle
Porsche 993, 1995–1998
Variants
993 Turbo, 993 GT2
Porsche part numbers
99312311351
Category
Turbocharger heat protection
Geometry basis
Mixed
Preferred process
Not chosen yet
Other candidate processes
Laser powder-bed fusion (metal printing), Direct metal laser sintering (metal printing), sheet_metal
Material
EOS NickelAlloy IN625 / UNS N06625, screening; OEM material unknown
Material standard
ASTM F3055, AMS 7000 or AMS 7001 to be contracted according to the selected process

Known limits

  • Only the 160 x 110 x 105 mm envelope comes from FVD; profile, wall, bosses and holes are hypothetical.
  • The F0 mass of 325.58 g exceeds the published 230 g by 41.6%; the commercial material is unknown and no validation by mass is possible.
  • The temperatures, emissivity, view factor, force and support conditions are synthetic.
  • The calculation ignores convection, real turbo geometry, shell curvature, contact, vibration, thermal fatigue, oxidation and creep.
  • The STEP proves only a computable BREP within the envelope and must not be manufactured for fitment.

Post-processing it would need

  • Support removal with full opening of the shell
  • Stress relief qualified for the machine and parameters
  • Removal from the build plate and controlled straightening of the thin wall
  • Machining or boring of the interfaces after adding machining allowances
  • Deburring and edge finishing
  • Thermal coating to be decided after testing

What a supplier would have to provide

  • Traceable powder, machine, parameters, orientation, lot and recycling
  • Demonstrated capability on a 0.8 mm wall and representative coupons
  • Dimensional inspection of the envelope, edges and interfaces
  • CT or radiography of the bosses and penetrant testing after finishing
  • Roughness, porosity, residual stresses and distortion specified by contract
  • Thermal, vibration and cyclic tests before fitment

Sources