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A water wall boiler tube repair system for biomass boilers that precisely cuts tube panels without a HAZ (heat affect zone) and bevels for welding end preps has been introduced by Esco Tool.
The MILLHOG Water Wall boiler tube replacement system consists of an APS-438 air-powered saw and track system that tack welds to the tube panel and cuts with ±1/8” accuracy; along with a Wart MILLHOG Beveler that can bevel, face and bore simultaneously. Mounting to tubes using a self-centering I.D. clamp system, the beveller can perform 30° to 37-1/2° end preps precisely.
Fast and accurate, the MILLHOG Water Wall boiler tube replacement system eliminates torches, HAZ and grinders, and can also be configured for membrane removal to handle tubes with overlay. This system is suitable for tubes from 1” to 4” OD and the Wart Beveler uses TiN-coated blades to machine carbon steel or highly alloyed tubes without using cutting fluids.
Related Glossary Terms
- outer diameter ( OD)
outer diameter ( OD)
Dimension that defines the exterior diameter of a cylindrical or round part. See ID, inner diameter.
- sawing machine ( saw)
sawing machine ( saw)
Machine designed to use a serrated-tooth blade to cut metal or other material. Comes in a wide variety of styles but takes one of four basic forms: hacksaw (a simple, rugged machine that uses a reciprocating motion to part metal or other material); cold or circular saw (powers a circular blade that cuts structural materials); bandsaw (runs an endless band; the two basic types are cutoff and contour band machines, which cut intricate contours and shapes); and abrasive cutoff saw (similar in appearance to the cold saw, but uses an abrasive disc that rotates at high speeds rather than a blade with serrated teeth).
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