Cylinder Repair and Refinishing
Companies repairing and refinishing compressed gas cylinders for various industries have historically used Steel Shot to clean rust from the tanks prior to hydrostatic testing and re-painting.
Many of these companies have approached Transmet after experiencing excessive machine wear issues in a short period of time; a by-product of using hard Steel Shot media in their shot blasting equipment.
Solving excessive wear issues
Common issues are holes in the cabinet (accompanied by layers of steel plates to temporarily cover them) and frequent replacement of worn blast wheels.
Transmet has extensive experience with paint, powder coat, and rust removal using a highly durable media – Cast Zinc Shot – that provides the density of Steel Shot without the machine damage. Cast Zinc Shot outlasts Steel Shot by four to five times, resulting in significantly less dust in the work environment.
Long-term users of Cast Zinc Shot have clocked 17,000+ hours on blast equipment without replacing the original blast wheel.
Success with Cast Zinc Shot
Blasting compressed gas cylinders requires paint and rust to be removed without removing metal from the cylinders. At 91 Knoop, Cast Zinc Shot is the correct hardness to achieve this, leaving a consistent and uniform surface finish without profile.
Companies that have switched to blasting with Cast Zinc Shot realize years of production savings on replacement blast components. Without holes in the back of the machine, media is kept off the floor and operator safety is improved. This ultimately creates a shot blasting step with less frequent maintenance intervals and more consistent performance.
One customer discovered they no longer needed to remove valves from the cylinders before blasting. Cast Zinc Shot will not damage these valves or external threads.
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