What is the EN ISO 15614-7 Standard?

The EN ISO 15614-7 standard is part of the EN ISO 15614 series, which defines welding procedure qualification tests for surfacing and overlay welding. The standard is applicable to all relevant surfacing welding methods and serves as a reference for the validation of new welding procedures.

The standard covers the following:

• Validation of the welding procedure specification (WPS),

• Evaluation of surfacing and overlay welding parameters,

• Inspection of weld layers,

• Non-destructive testing methods,

• Mechanical tests and macro-examinations,

• Determination of the scope of procedure qualification

How is the EN ISO 15614-7 Welding Procedure Test for Overlay Welding Performed?

The welding procedure test is performed on test pieces that represent actual production conditions.

The process generally consists of the following stages:

• Preparation of the preliminary welding procedure specification (WPS),

• Preparation of the test specimen,

• Application of the overlay welding using the specified parameters,

• Visual inspection (VT),

• Application of non-destructive testing methods,

• Performance of mechanical tests,

• Macro-section examinations,

• Evaluation of results,

• Preparation of the WPQR document

Why is EN ISO 15614-7 Applied?

The EN ISO 15614-7 standard is used to ensure that surfacing and overlay welding are performed safely, reproducibly, and in compliance with standards.

Key reasons for its application include:

• Technical validation of welding procedures,

• Ensuring the quality of the overlay,

• Verification of wear and corrosion resistance,

• Reduction of production defects,

• Ensuring traceability,

• Compliance with international standards.

What are the application areas?

The EN ISO 15614-7 standard is applied in many industrial sectors.

Key application areas include:

• Pressure equipment manufacturing,

• Oil and natural gas sector,

• Power plants,

• Chemical and petrochemical facilities,

• Valve and pump production,

• Heavy industrial equipment,

• Wear-resistant surface applications,

• Corrosion-resistant coating systems.

Equipment and Techniques

The equipment and techniques used within the scope of EN ISO 15614-7 are as follows:

• TIG (GTAW), MIG/MAG (GMAW), SAW, and other suitable welding systems,

• Automatic and mechanized welding systems,

• Non-destructive testing equipment (UT, RT, PT, MT),

• Mechanical testing devices,

• Macro-examination equipment,

• Hardness testing devices,

• Welding parameter recording systems.

This equipment is used to verify the compliance of surfacing and cladding welding procedures with technical requirements.

Advantages

• Verifies the reliability of the welding procedure.

• Enhances surface protection performance.

• Supports resistance to wear and corrosion.

• Ensures consistent quality in production processes.

• Supports compliance with international standards.

• Strengthens traceable production processes.

Disadvantages

• Testing processes may require additional time.

• It may entail sample preparation costs.

• It requires comprehensive documentation.

• It may necessitate technical expertise.

• Additional testing requirements may arise in certain applications.

Contact us

Conformity assessment and certification activities carried out under the EN ISO 15614-7 procedure for overlay and build-up welding tests are conducted to verify the compliance of overlay and build-up welding procedures with international standards.

The inspection and certification activities performed by our organization encompass the assessment of the technical competence of welding procedures within the framework of EN ISO standards.