Welding Positioning and Assembly Assistance in Pressure Vessel Manufacturing in Malaysia
Project details
Project Background
This project was applied in a pressure vessel and metal structure manufacturing workshop in Malaysia. The site mainly processed shells, flanges, supports, nozzle connections and related welded structures. During pressure vessel manufacturing, workpieces are usually large and heavy, and positioning, assembly, turning and welding posture adjustment must be completed before welding.
In the past, some processes relied mainly on overhead crane lifting, manual positioning assistance and temporary supports. Although basic assembly could be completed, adjustment time was relatively long when switching between batch production and different workpiece sizes. Worker labor intensity was also high, and welding positions were not always easy to keep stable. The customer wanted to improve assembly efficiency and welding process controllability through welding assistance and positioning equipment.
On-Site Application
The project site used LEHUNDI welding assistance and positioning equipment to support, rotate, position and adjust the welding posture of pressure vessel shells, flanges and welded components. The equipment was used together with the workshop welding station, helping operators complete tack welding, circumferential weld preparation and structural assembly at more suitable working angles.
In actual production, the equipment was mainly used for shell turning, flange alignment, nozzle accessory assembly and pre-weld positioning. Compared with relying only on manual work and lifting adjustment, welding positioning equipment helped keep the workpiece posture more stable, reduced repeated lifting and correction, and improved continuity in welding preparation.
Project Challenges
Pressure vessel manufacturing sites often face large workpiece weight, frequent specification changes, high assembly accuracy requirements and difficult welding posture control. The site needed to maintain production efficiency while reducing safety risks caused by excessive manual assistance.
The main challenges included: shell and flange workpieces were heavy and difficult to adjust manually; different workpiece sizes changed frequently, requiring equipment with practical adaptability; positioning and alignment before welding required higher accuracy, and repeated correction affected the production rhythm; lifting coordination took time and reduced station turnover efficiency; some welding positions were not ideal, increasing operation difficulty and welding preparation time.
Application Results
LEHUNDI welding assistance and positioning equipment was used in this project for assembly positioning and welding support in the pressure vessel workshop. The equipment helped the workshop improve workpiece turning, support and posture adjustment, allowing operators to complete pre-weld preparation and welding coordination more steadily.
After use, the site reported that workpiece positioning became easier, lifting adjustments were reduced, the pre-weld assembly process became smoother, and operational safety also improved. This case shows the practical value of LEHUNDI welding assistance and positioning equipment in pressure vessel manufacturing, metal structure assembly and industrial welding stations.
Equipment Used
Welding positioner; Welding rotator; Welding auxiliary positioning equipment; Industrial assembly support equipment.