Internal pneumatic blasting
In the internal pneumatic blasting process the pipe surface is blast cleaned with dry-grit using a blast lance system. A highly concentrated stream of steel abrasive particles is projected at the surface. The goal is to remove rust, mill scale and contaminations in order to create the correct cleanness and surface roughness profile, beneficial for coating adhesion.
Solution:
For smaller inside pipe diameters where no mechanical blasting can be used, Selmers can offer the pneumatic blasting system where the throwing speed of the abrasive materials is generated by compressed air. A dust filter system generates a large airflow though the pipe to remove dust and abrasive materials out of the pipe.
Key Features:
- Available with multiple parallel lances to process multiple pipes simultaneously, depending on capacity requirements.
- Optimum filter system for low dust levels and lower abrasive material consumption
- Smart equipment design for optimum process results and minimum wear
- Integrated pipe handling system optimizing the actual process time
Benefits:
- Suitable for small pipe and tube diameters
- High pressure ventilator(s), with constant flow, independent of filter load
- Electronic grit valve for more accurate and on the fly grit adjustment (optional)
How It Works:
The blasting process is executed with abrasives. Where-as the actual blast process is carried out by means of a blast lance which is introduced in the pipe. During this process the rear- and front pipe-end are positioned into enclosure cabins allowing airflow and preventing escape of abrasives, dust and debris. The abrasives can be grit, shot or a mixture in varying sizes and hardness. The abrasives are led from an abrasive bunker to the blast nozzle thru abrasive valves, controlling the amount of abrasive. Surface cleaning is than accomplished by abrasive material, speed generated by compressed air through the blast nozzles, accelerating abrasives with high impact against the pipe surface.
The blast system comes c/w abrasive recycling and cleaning system. Used abrasives are collected in a closed loop system by means of a screw and bucket elevator. During cleaning, dust and debris are separated from the re-usable abrasives. The dust filter retracting dust-loaded air from the blast cabin is also generating airflow for cleaning the abrasives.
The Full Scope:
- Pipe handling units
- Dust collecting system
- Front & end cabins
- Abrasive reclaim system
- Blast lance & drive buggy
- Compressed air system
- Electrical control system
Product Range:
- Internal pipe diameter range of 53 – 400 mm
- Pipe lengths up to 14 mtr.
- Suitable for steel pipes such as ERW pipes, LSAW and SSAW pipes. Seamless pipes with special precautions.
Filterable Properties:
At Selmers, we specialize in advanced industrial machinery and automation for coating and handling pipes and tubes. With over 50 years of experience, we have grown into a trustworthy supplier of numerous automated solutions. Collaboration is key to creating real magic. Interested in optimizing performance and reducing risks?
