REDUCE • RELIEF • RESTRUCTURE
Weld Heat Treatment & Metallurgical Heat Treatment
To Reduce, Redistribute and Restructure the residual stresses in the material that have been introduced by welding.
PWHT is performed usually after welding in order to ensure the material strength of a part is retained after welding. PWHT is typically essential to reduce residual stresses, as a method of hardness control, or even to enhance material strength.
TYPICAL STEPS OF HEAT TREATMENT
- Heating
- Soaking
- Cooling
TYPICAL CYCLE OF PWHT
- Typical cycle for ASTM A 106 Gr. B
- Heating Rate: 200°C/Hour
- Soaking: 600-620°C for 1 Hour
- Cooling: 200°C/Hour
ADVANTAGES
- Improved ductility of the material
- Improved metallurgical structure
- Improved or reduced hardness
- Reduced risk of brittle fracture
- Relaxed thermal stress
- Tempered metal
- Removal of diffusible hydrogen (to prevent hydrogen induced cracking)
METALLURGICAL HEAT TREATMENT
- Solution Hardening
- Annealing
- Normalizing
- Quenching and Tempering
With a fleet of over 50 PWHT machines, we bolster our specialty services. With a team of highly skilled and experienced PWHT technicians, we serve customers in fabrication and heavy steel industries.
OUR CORE SERVICES INCLUDE:
Inspection, testing and endorsement services for various industries
Conventional and Advance NDT Services
Asset Integrity Management and Field Inspection Services
Post-Weld Heat Treatment (PWHT) Services
Mechanical and Welding Qualification Testing
Metallurgical Failure Investigation
Corrosion Investigation and Testing
Analytical Chemical Testing
Rope Access for inspection at heights and "Normally difficult to Access" locations.
Our services are indispensable for the process owners and help them decide the course of action related to their materials, equipment, components for qualification and continued usage through our core services.
OVER THREE DECADES OF PROFESSIONAL EXCELLENCE
Analytical and Technical Laboratory in the Middle East having Metallurgy, Mechanical Testing, Chemical Testing,
NDT, Marine Survey, Field Inspection, Asset Integrity Services and PWHT facilities all under one roof that employs over 100 professionals. And Versatile Integrated Quality Management System and International Approvals.