Welding Technology and Preliminary Welding Procedure Specification (pWPS) Development

When developing the welding technology and the preliminary welding procedure specification (pWPS), we consider the nature of the welded joints of the product, the materials used, welding positions, stresses, joint requirements, and the production volume. Based on this, we determine the appropriate process variants, which are finalized considering the equipment available to the client and its cooperation partners.

Process Variants covered by our professional competence (MSZ EN ISO 4063):

1. Arc welding: including manual arc welding, submerged arc welding, gas-shielded arc welding, and robotic technologies.
2. Resistance welding: such as spot, seam, and projection welding.
3. Gas welding: a wide range of fusion welding technologies.
4. Welding with pressure: processes created using mechanical force and/or heat.
5. Beam welding: laser and electron beam welding techniques.
6. Spare Category
7. Other welding processes: solutions tailored for special or unique applications.
8. Cutting and gouging: such as plasma cutting, oxy-fuel cutting, and other methods.

Technology Development Process:

Based on the selected process variant, we begin developing the technology specific to the geometry and material group to be produced. This includes the following:

• Determining typical welding parameters (current intensity, voltage, welding speed, etc.).
• Selecting the appropriate filler materials and shielding gases.
• Establishing pre- and post-heat treatment parameters, if required.
• Validating the processes and certifying compliance with standards according to the MSZ EN ISO 15614 series.

At this stage, testing the technology does not necessarily require accredited laboratory tests, so it can even be carried out in the client's own laboratory. The results obtained can be immediately used if the MSZ EN ISO 3834-2 welding workshop certification is not required. If the certification is needed, however, a preliminary pWPS is necessary for obtaining the WPQR.

Participation in the Welding Procedure Qualification Record (WPQR) Acquisition

If the company operates an MSZ EN ISO 3834-2 welding workshop certification system, obtaining the welding technology qualification protocol (WPQR) is mandatory to maintain the certificate and standardize the welding processes.

WPQR Acquisition Process

1. Qualification is carried out with the involvement of an accredited material testing laboratory and certification body.
2. We demonstrate the compliance of the welding technology according to MSZ EN ISO 15607; 15610; 15611; 15612; 15613, and 15614 standards.
3. The finished WPQR document includes the following:
   • The welding geometry and procedure.
   • The base and filler materials used.
   • Details of the welding parameters.
   • The results of procedure testing and their validity range.

We actively support our partners in acquiring the WPQR, including preparation, conducting tests, and managing the entire administrative process.

Manufacturer’s Welding Procedure Specification (WPS) Issuance Based on WPQR

Issuing the Welding Procedure Specification (WPS) is essential for production and is based on the WPQR documentation.

Role and Content of the WPS

• The WPS defines all parameters of the production process, ensuring the adherence to standardized and qualified welding procedures.
• It must be known, applied, and verified by the certified welder and the welding coordinator.
• Production is carried out according to the WPS provisions, guaranteeing the quality of the joint and its compliance with relevant standards.

We provide support in assembling the WPS to ensure that all aspects of the production process meet the requirements and the specific needs of our clients.