Customized Steam Seal Carrier with Precision CNC Machining and Optional Stellite Hardfacing for Steam Turbines
Product Summary
Custom steam seal carriers for turbines, featuring precision CNC machining, durable heat-resistant alloys, optional Stellite hardfacing, and full compliance with power industry standards. Supports split/segment and integral designs for new units and retrofit projects.
Product Details
Material Options:
25Cr2MoV, 42CrMo, 12Cr1MoV, Alloy Cast Steel, Stainless Steel
Production Processes:
Free Forging, Ring Rolling, Precision CNC Machining
Surface Treatment:
Optional Stellite Hardfacing
Inspection Methods:
Dimensional Inspection, Flatness & Circularity Detection, NDT (UT/MT/PT)
Structure Types:
Split Arc Segment, Integral Circular, Combined Diaphragm Assembly
Machining Tolerance:
Accurate Groove Spacing, Flatness, Circularity And Hole Position Tolerance
Product Description
Custom Steam Turbine Steam Seal Carrier (Seal Housing)
Steam seal carrier (also known as diaphragm carrier or steam seal housing) is a core stationary component inside steam turbines. It is used to install labyrinth steam seal strips, forming a multi-stage sealing structure between rotor and stator. The assembly effectively suppresses steam leakage between stages, improves internal steam efficiency, reduces heat loss, and guarantees safe and economical operation of turbine units.
We provide full customized manufacturing services of steam turbine steam seal carriers for power generation and industrial steam turbines. Products include split-type arc segment steam seal carriers and integral circular seal housings. Supported processes include free forging, ring rolling, precision CNC machining, and optional Stellite hardfacing on sealing surfaces. We strictly follow customer drawings and power industry standards for production, applicable to new unit manufacturing and spare part replacement for overhaul projects.
Main Product Types
- Split arc segment steam seal carrier (Half-circle / Multi-segment structure, widely used in large steam turbines)
- Integral circular steam seal housing
- Combined diaphragm & steam seal carrier assembly
- Retrofit optimized steam seal carriers for turbine efficiency improvement
Applicable Materials
25Cr2MoV, 42CrMo, 12Cr1MoV, alloy cast steel, stainless steel and other heat-resistant steels matched for different temperature & pressure parameters.
Complete Production Process
- Technical confirmation & drawing review
- Forging / Casting blank manufacturing
- Normalizing & tempering heat treatment
- Rough machining
- Stress relief treatment
- Precision CNC finishing (grooves for steam seal strips, mounting flange, positioning surfaces, bolt holes)
- Optional: Stellite alloy hardfacing on contact/sealing surfaces
- Dimensional inspection, flatness & circularity detection
- NDT inspection (UT / MT / PT upon request)
- Final cleaning & packaging
Core Advantages
| High Dimensional Precision | Precision five-axis CNC machining ensures accurate groove spacing, flatness, circularity and hole position tolerance. Perfect fit for labyrinth seal strips to avoid assembly clearance deviation. |
|---|---|
| Stable Material Performance | Qualified forgings with standardized heat treatment. Uniform mechanical properties, strong resistance to high temperature, thermal deformation and vibration load under long-term operating conditions. |
| Flexible Customization | Fully customized according to customer drawings: different sizes, segmentation schemes, groove types, mounting structures. We support new part production and optimized retrofit for old turbine units to lower steam leakage. |
| Optional Surface Reinforcement | Stellite cobalt alloy hardfacing service can be provided on friction and sealing surfaces to enhance erosion resistance and extend service life. |
| Strict Quality Traceability | Complete raw material certificates, heat treatment records, machining inspection reports and non-destructive testing documents can be supplied. Comply with ISO, DL/T and related power industry specifications. |
Application Range
- Thermal power generation steam turbines
- Cogeneration & heating steam turbines
- Waste heat recovery turbines
- Biomass & waste-to-energy power turbines
- Industrial steam turbines for chemical, metallurgy and paper industries
Information Required for Quotation
- Official component drawings (PDF / CAD)
- Outer diameter, inner diameter, segmentation form, number of seal grooves
- Required material grade
- Working medium parameters: temperature, pressure
- Whether Stellite hardfacing is required
- NDT testing requirements
- Quantity and delivery schedule
Mr. Tom Hu
General Manager
- Email: tom.hu@huanxiang-industrial.com
- Tel: +86-13618387300
- WhatsApp: 8613618387300
-
WeChat:
+86-13271888325
- Skype: hsh548
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