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V Series Parts Solutions

MD&A’s San Antonio Service center is an industry leader in V series components manufacturing and repairs. The facility has leading-edge equipment and repair techniques with proven expertise.

Our enhanced gas turbine new parts use proprietary advanced technology. The improved designs of the components, based on the extensive repair history of these OEM products, extend the service life by minimizing oxidation, creep, and metal temperatures.

The improved designs address field distress issues including:

  • optimized internal cooling to reduce metal temperature without increasing cooling air requirements;
  • platform cooling to address platform thermal-mechanical fatigue (TMF);
  • modified geometry to reduce stresses that lead to cracking;
  • blade tip cooling enhancements to improve repairability at overhaul;
  • and refined placement of film cooling holes to address local areas of distress.

Siemens® Gas Turbine SGT5-4000F
Model V94.3Ax - 1st, 2nd, 3rd, 4th Stage Blade

  V94.3Ax 1st Stage Blade Advantages:
• Manufactured using a proprietary single crystal nickel superalloy tailored for gas turbine parts
• The design uses a metallic bond coat applied by High-Velocity Oxy-Fuel (HVOF)
• Utilizes a ceramic thermal barrier coating (TBC) topcoat that reduces the base metal temperature to provide superior protection against oxidation, coating spallation, and TMF cracking
• An aluminide coating provides improved oxidation and corrosion resistance for the internal cooling passages
• Added platform features improve part life
  V94.3Ax 2nd Stage Blade Advantages:
• Manufactured using a directionally solidified nickel superalloy tailored for gas turbine parts
• The design uses a metallic bond coat applied by HVOF and a TBC topcoat providing superior protection against oxidation and TMF cracking
• For improved internal cooling passage oxidation and corrosion resistance, this part also incorporates an aluminide coating on the internal cooling passages
• Added Tip cooling features added to improve part life
  V94.3Ax 3rd Stage Blade Advantages:
• Manufactured using René 80 commercially available equiaxed nickel superalloy
• The design uses a metallic bond coat applied by HVOF and a TBC topcoat providing superior protection against oxidation and corrosion
• For improved internal cooling passage oxidation and corrosion resistance, this part also incorporates an aluminide coating on the internal cooling passages
• The design provides optimized internal cooling to reduce metal temperature without increasing cooling air requirements
  V94.3Ax 4th Stage Blade Advantages:
Manufactured using René 80 commercially available equiaxed nickel superalloy
• Added Tip cooling features added to improve part life
• An aluminide coating provides improved corrosion resistance for the internal passage

Model V94.3Ax - 1st, 2nd, 3rd, 4th Stage Vane

  V94.3Ax 1st Stage Vane Advantages:
• Manufactured using a Mar-M-509 commercially available equiaxed cobalt superalloy
• Utilizes a proprietary metallic bond coat applied by HVOF and a TBC topcoat
• The TBC reduces base metal temperature, provides superior protection against oxidation, coating spallation, and TMF cracking
  V94.3Ax 2nd Stage Vane Advantages:
Manufactured using René 80 commercially available equiaxed nickel superalloy
• Utilizes a proprietary metallic bond coat applied by HVOF and a TBC topcoat
• The TBC reduces base metal temperature, provides superior protection against oxidation, coating spallation, and TMF cracking
• For oxidation and corrosion resistance, this part also incorporates an aluminide coating on the internal cooling passages
  V94.3Ax 3rd Stage Vane Advantages:
• Manufactured using René 80 commercially available equiaxed nickel superalloy
• The design incorporates a metallic bond coat applied by Air Plasma Spray (APS) and a TBC topcoat providing superior protection against oxidation and TMF cracking
• For oxidation and corrosion resistance, this part also incorporates an aluminide coating on the internal cooling passages
   V94.3Ax 4th Stage Vane Advantages:
• Manufactured using René 80 commercially available equiaxed nickel superalloy
• For oxidation and corrosion resistance, this part also incorporates an aluminide coating on the internal cooling passages

V94.3Ax 1st and 4th Stage Turbine Guide Ring Segments

  V94.3Ax 1st Stage Turbine Guide Ring Segments Advantages:
• Manufactured using an IN-738 commercially available equiaxed nickel superalloy
• The design incorporates a metallic bond coating applied by APS and a ceramic abradable seal coating providing superior protection against oxidation
   V94.3Ax 4th Stage Turbine Guide Ring Segments Advantages:
• Equiaxed cast superalloy

Read our case study:

V94.3A4 2nd Stage Blade Extended to 75,000 EOH

See all our Gas Turbine Services offered.

Learn more about the other Gas Turbine Parts that MD&A offers.

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