WELDING PROCEDURE (WPS/WPQR)
Welding is an engineering process that joins components or parts of similar or dissimilar compatible materials. This is often done by melting the joining interfaces of the objects and adding a filler material to form a pool of molten material which forms a permanent joint after solidification.Several thermo-mechanical mechanisms are known to introduce the required heat to melt material. The most common welding process are MMAW, SMAW, GMAW, GTAW, PAW, SAW, FCAW, Oxygen-Fuel Welding, Resistance spot and seam weld, Thermit weld, Explosion weld, flash welding.
There are numerous variables in these processes when uncontrolled can contribute to inadequate or unacceptable weld joint. As a standard practice, a weld sample is produced prior to commencing the final welding of the product. All welding variables are controlled and recorded when welding the weld sample or coupon.
These welded coupons are then tested to ensure that the weld joint will be of acceptable quality. The welded sample or coupon is often tested at various stages of fabrication such as for Welding Procedure Qualification Record (WPQR), to qualify Welding Procedure Specification (WPS), to qualify welder as Welder Qualification Record (WQ or WQR) and to accept the final product in the form of Production Weld test.
We provides welding services such as;
• Welding Procedure Specification (WPS)
• Weld Procedure Development
• Welding Procedure
• Qualification record Witnessing (WPQR)
• Welder Qualification Witnessing (WQR)
• WPQR Weld Qualification
• Welder (Performance) Qualification
• Visual Inspection of welds
• Welding machine calibration as required by several standards.
Our team comprises of Metallurgist, Engineers, Welding Engineers and technologist, Welding Supervisors and Inspectors, Scientist, Engineering Technologist and Non-destructive Testing Technologist. The combination of these professionals from different speciality ensures that the welding task is completed efficiently and within shortest duration.
