What is the EN ISO 15614-12 Standard?

The EN ISO 15614-12 standard defines qualification tests for resistance welding methods (spot, seam, and projection welding). These welding methods are widely used, particularly in mass production and automated lines, and enable high-speed joining.

The standard covers:

• Validation of the resistance spot welding procedure

• Seam welding process control

• Evaluation of projection welding parameters

• Electrode force and current control

• Welding time and energy parameters

• Non-destructive testing methods

• Mechanical tests and cross-sectional examinations

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How is the EN ISO 15614-12 Resistance Welding Test Performed?

Resistance welding testing is performed on test specimens that represent production conditions.

The process generally involves:

• Preparation of the Welding Procedure Specification (WPS)

• Preparation of test specimens (sheet metal joints)

• Execution of the resistance welding process

  • Spot welding

  • Seam welding

  • Projection welding

• Visual inspection (VT)

• Macro-section examinations

• Mechanical tests (shear, tensile, and peel tests)

• Non-destructive testing (when required)

• Evaluation of results

• Preparation of the WPQR (Welding Procedure Qualification Record)

Why is EN ISO 15614-12 Applied?

The EN ISO 15614-12 standard is applied to ensure the reliability and repeatability of resistance welding methods used in serial production.

Key reasons for its application include:

• Validation of welding procedures

  • Ensuring consistent quality in serial production

  • Guaranteeing joint strength

  • Reducing production defects

  • Standardization in automotive and sheet metal manufacturing

  • Meeting international compliance requirements

  What are the application areas?

  The EN ISO 15614-12 standard is used particularly in mass production and sheet metal applications:

  • Automotive body manufacturing

  • White goods manufacturing

  • Electrical and electronic panels

  • Sheet metal structures

  • Rail vehicle bodies

  • Ventilation and HVAC systems

  • Industrial mass production lines

  Equipment and Techniques

  Equipment and techniques used within the scope of EN ISO 15614-12:

  • Resistance spot welding machines

  • Seam welding systems

  • Projection welding presses

  • Electrode force and current control systems

  • Time and energy control units

  • Mechanical testing equipment (shear, tensile, peel)

  • Macro-section examination equipment

  • Process monitoring systems

  This equipment is used to verify the repeatability of welded joints under mass production conditions.

  Advantages

  • Ensures high compatibility with mass production

  • Offers fast and cost-effective connection capabilities

  • Is fully compatible with automation

  • Reduces production time

  • Provides standardized quality control

  • Increases connection strength

  Disadvantages

  • Material thickness range is limited

  • Electrode wear requires monitoring

  • Surface preparation is critical

  • Not suitable for every material combination

  • Equipment costs can be high

  Contact us

  Conformity assessment and certification activities carried out under the EN ISO 15614-12 Resistance Spot, Seam, and Projection Welding Test Procedure are conducted to verify the compliance of resistance welding manufacturing processes with international standards.

  The inspection and certification activities carried out by our organization encompass the evaluation of the technical competence of welding procedures and the verification of conformity processes.