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Nondestructive measurement of boiler tube scale deposit thickness

Excessive scale deposit on boiler tubes results in costly energy losses and excessive boiler unavailability. A well planned and executed boiler chemistry control program is essential to prevent tube failure.

Valmet manufactures exact duplicates of your air heater seals

Air heater seals reduce operating costs and improve heat rate. Valmet manufactures a complete range of exact replacement-in-kind seal assemblies.

Care, handling, storage and cleaning of stainless steel headboxes

Under normal conditions, stainless steel is corrosion resistant due to a protective chrome oxide film. However, special care should be taken when storing, handling and cleaning stainless steel, especially in headboxes.

Follow safety rules when handling spools and parent reels

Due to the size and weight of parent rolls and reel spools, handling accidents can cause serious injury or death and costly equipment repairs. However, handling accidents can be avoided if basic safety rules are followed.

Follow these guidelines for periodic maintenance of roll doctors

Always refer to the roll doctor OEM supplier's manual for maintenance information. However, the following are guidelines for periodic maintenance and lubrication for typical roll doctors assemblies.

Review this brief list of calendering terms and definitions

Several terms are in common use to describe calendering equipment, including general operation, temperature control systems and frame design types. This article provides a brief list of terms and definitions.

Airide maintenance - construction, assembly and adjustment

Airides require minimum maintenance, but should still be inspected and adjusted or replaced periodically. The rubber can get hard and brittle and start to leak.

Fabric guiding - basic rules, guidelines and setup procedures

Guiding of all types of fabrics follows similar basic rules, guidelines, and setup procedures. Here are some of the most important ones…

Hydraulic power unit troubleshooting - symptoms, causes and fixes

Troubleshooting HPUs is easier when you evaluate the symptoms to determine root causes. These troubleshooting charts will help diagnose problems related to pumps, leaks, pressure, noise and heat.

Prevent problems by monitoring roll performance and conditions

When the machine is down, check rolls for: unusual wear or damage to the cover, fatigue-type cracking of the rubber and impact-types of cracks.