R&D
The Best Power Plant Service Company
Development of Welding Procedure
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Development of Welding Procedure
The company has developed and possesses the techniques for repaired welding procedures for materials (such as Turbine Casing) applied to each plant, such as nuclear power, thermal power, and combined power generation.
Development of Welding Procedure
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Draft WPS
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Making Samples
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Non-destructive Inspection
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Flexural test
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PQR & WPQR
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WPS Completion
| Base Metal | HP Casing, LP Casing, Packing Casing, BFPT Casing, BFP Casing, Pump Casing, Turbine Diaphragm, Etc. |
|---|---|
| C-Steel (P No.1,3), 0.5Cr-0.5Mo (P No.3), 1.25Cr-0.5Mo (P No.4), 1.25Cr-1Mo (P No.CrMoV), 3.5NiCrMoV (P No.9A, 9B, 9C), STS (P No.6,7,8), 9CrMoVNbCo (P No.7, 15E), 12CrNiMoVNbN (P No.6), Inconel (P No.41~47) | |
| Filler Metal | Alloy #82 (NiCr-3), ER309/309L, ER410, ER70S-2, E7016, E70S-6, E71T-1C, E9016B3, E90SB3, ERCoCr-3, ERCoCr-A |
| Welding Method | GTAW, FCAW, SMAW, Combined |
| Note | - Use for High Quality Filler Metal - Exclude PWHT for Site Application (Temper-Bead Method etc.) |
Reference
- PQR : Procedure Qualification Record
- WPS : Welding Procedure Specification
- WPQR : Welding Procedure Qualification Record