Precision CNC Machining of HPT Blades for the Gas Turbine Industry

These high pressure turbine blades were manufactured for use in gas turbine assemblies. Hi-Tek Manufacturing is a world class supplier of hot gas path components for the gas turbine industry. Composed of a high temperature super alloy, the high pressure turbine blades are one of the primary components in the hot gas path segment of a turbine and one of Hi-Tek's highest volume products.

The HPT Blade machining processes utilize a wide range of manufacturing processes. The initial grinding of the root form was accomplished using our multi axis creep feed grinders and a 5-axis CBN grinder. The cooling holes were drilled using a multi-axis sinker EDM, a 6-axis fast-hole EDM, or a 5-axis YAG laser. The root form contours were inspected with CMM equipment and the cooling holes were CNC Optically inspected as well as Airflow tested. The components were also deburred, vapor degreased, cleaned, and marked.

The finished parts can vary in size from 2" to 24" in length and 2" to 8" in width, featuring a surface finish of 16 RMS. Used in commercial and military aircraft as well as land based turbines for power plants up to 250MW, we have manufactured over one million of these products since 1980.

For more information on these precision CNC machined turbine blades and buckets, see the table below or contact Hi-Tek Manufacturing directly.

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Precision CNC Machining of High Temp Alloy Turbine Blade Highlights

Product Description
High Pressure Turbine Blades & Buckets
Precision CNC Machining Capabilities
Applied/Processes
Primary:
CNC Creep Feed Grind Root Form
Sinker EDM Drill Cooling Holes (Round or Shaped)
Fast Hole EDM Drill Cooling Holes (Round or Shaped)
Laser Drill Cooling Holes (Round)
Airflow
Wire EDM Root End & Tip Radius
CBN Grind Root Faces
Sinker EDM Pockets (Tip or Pocket)
Secondary:
Electrode Stamping for EDM Hole Drilling
Deburr
Vapor Degrease & Clean
Part Mark
Equipment Used to Manufacture Part
3, 4, or 5-Axis Creep Feed Grinder
5-Axis CBN Grinder
5-Axis Wire EDM
6-Axis Fast-Hole EDM
3, 4, or 5-Axis Sinker EDM
5-Axis YAG Laser
Hi-Tek designed and built Tooling & Fixtures for all processes
Material Used
High Temperature Super Alloys
In Process Testing/Inspection Performed
Airflow Testing
CNC Optical Inspection
Radiographic Inspection (X-Ray)
Fluorescent Penetrant Inspection (FPI)
Coordinate Measuring Machine (CMM) Hard Gaging
Industry for Use
Aircraft Turbines - Commercial & Military
Small Land Based Turbines - 1MW - 49 MW
Large Land Based Turbines - 50MW to > than 250MW
Volume
Over 1 Million processed and shipped since 1980
Delivery/Turnaround Time
Product ships in Engine sets - depending on set size and work scope: 3-6 weeks after receipt of order and material.
Delivery Location
FOB origin
Standards Met
ISO 9001:2008
AS 9100 Rev C
NADCAP:
AC7116 Non-conventional Machining
AC7114 Non Destructive Testing

Customer Supplied Design & Prints:
Drawing Formats - Unigraphics (PRT), STEP, IGES
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