En Iso 15614-7 Pdf
Base metals are grouped by composition. Qualification on one group allows welding on that specific group and sometimes specific sub-groups.
Sampling the top surface or a specific depth of the overlay to verify that the chemical composition matches the required specification.
(e.g., hardfacing mining equipment with tungsten carbide alloys). High-temperature protection (e.g., surfacing boiler tubes).
| | Publication Date | Status | Key Changes | |---|---|---|---| | EN ISO 15614-7:2019 | 2019-12 | Current (active) | Most recent revision; supersedes 2016 edition | | EN ISO 15614-7:2016 | 2016-10 | Superseded (withdrawn) | Second edition; introduced updated qualification variables | | EN ISO 15614-7:2007 | 2007-07 | Superseded (obsolete) | First edition; no longer valid for new qualifications |
A very specific topic!
: Lining vessels handling highly corrosive acids. Mining : Hardfacing excavator teeth and crushing equipment. 🧪 The Qualification Process
If you are currently planning a welding qualification or preparing a WPS for an overlay project, let me know: What and filler metal combination are you using?
Organizations like BSI (UK), DIN (Germany), or AFNOR (France) sell the adopted EN ISO versions.
Global projects often compare European/International standards (ISO) with American standards (ASME). While ASME Section IX handles corrosion-resistant and hard-facing overlay qualification under variables QW-214 and QW-216, EN ISO 15614-7 is often considered more prescriptive regarding specific testing locations, mandatory hardness limitations, and stricter parent material groupings. Compliance with one does not automatically guarantee compliance with the other, meaning separate qualifications are often required for dual-certified workshops. Summary for Implementation Implementing EN ISO 15614-7 requires a systematic approach: en iso 15614-7 pdf
: It defines the exact conditions for carrying out tests and establishes the "range of qualification"—essentially the boundaries within which a welding procedure remains valid once tested. Exclusions
If you are looking to download or review the exact text, tables, and compliance charts of the , it must be officially purchased through national standards bodies (such as BSI, DIN, or AFNOR) or the official ISO store to ensure you are utilizing the most up-to-date, legally compliant version for your engineering operations.
To achieve qualification under EN ISO 15614-7, a manufacturer must draft a preliminary Welding Procedure Specification (pWPS), weld a standardized test piece, and subject that piece to destructive and non-destructive testing. If the results pass, a Welding Procedure Qualification Record (WPQR) is issued. 1. Standard Test Pieces
: Specifies the required dimensions and types of test pieces that must be welded to prove the procedure. Examination and Testing : Detailed requirements for both Non-Destructive Testing (NDT) —like visual or ultrasonic testing—and destructive testing to verify the overlay's integrity. Variables (Clause 8) Base metals are grouped by composition
When you download or purchase the EN ISO 15614-7 PDF, you will find several critical sections that dictate how to qualify your overlay welding process [2]: 1. Essential Variables
At least two cross-sections are polished and etched. Engineers inspect the penetration depth, dilution, heat-affected zone (HAZ), and look for internal defects like micro-cracks.
: Agencies like BSI (UK), DIN (Germany), or AFNOR (France) provide localized versions.