Product Description
Ceramic heating pads are mainly used for Weld Preheating and Post Weld Heat Treating. Ceramic heating pads are constructed of high grade Nickel-Chrome 80/20 19-stranded resistance wire which run through durable aluminum oxide ceramics beads. These resistance heating elements accurately raise the workpiece temperature to the proper temperature before, during, and after welding. These semi-flexible ceramic heating pads, with their interlocking beads and high temperature wire, allow for a fit conforming to the shape of the workpiece, and are capable of temperatures up to 1050°C. This of type ceramic heaters can be customized with voltages from 22V to 255V.
Ceramic heating pads are manufactured in a full range of standard construction options, dimensions, voltage and power rating.
► APPLICATIONS
Weld Preheating
Post Weld Heat Treating
► FEATURES
Flexible structure allows them to be used in either a curved or flat application
Customized size to the shape of the workpiece
Custom-designed to meet your specifications
► BENEFITS
Easy to install and to remove
Good temperature uniformity
Durable
Long service life
Easy to replace
► TECHNICAL SPECIFICATIONS
Maximum Operation temperature up to 1050°C
Nickel-Chrome 80/20 alloy
Dielectric strength: 2000V/min
Hot insulation resistance: ＞5MΩ
► CERAMIC BEADS
High grade sintered aluminum oxide ceramics beads
Flexibility and high heat transfer
Pink and white
► CONNECTOR PLUG
All of our ceramic heating elements are equipped with Brass Camlock connectors
► SPECIFICATION
Note: Specification only for reference. Special sizes are also available upon request.
► FORMS CONFIGURATION
Options
► CONTROL PANEL
Temperature controllers use thermocouples spot welded to the workpiece to monitor and regulate the actual part temperature throughout the operation. Temperature Recorders are often used to produce a record of the temperature profiles over time before, during, and after welding. This is important when welding jobs require careful documentation.
► INSULATION BLANKET
Insulation Blankets are made up of Ceramic Fibre Blanket, operating at temperatures up to 1260°C. Easy to cut and install. Our Insulation Blankets come in a range of sizes, special sizes are also available upon request.
► PROCESS
Ceramic heating pad is wrapped around the workpiece, and insulation is applied to the weld joint and the temperature controller is set. Once preheat temperature is achieved, a welder removes the insulation and starts their work. After the weld, the ceramic heaters can be placed over the weld and the controllers can be reset for proper Post Weld Heat Treating.
It is very important to understand the material characteristics of the metals being welded, and know minimum and maximum preheat temperatures, particularly in tempered steels.
For most preheating, post heat treating, and interpass heating, precise temperature control isn’t required. It’s more important to maintain a minimum temperature, and stay within an acceptable range during the actual welding process, as well as during cool down.
Exceptions are with tempered steels. Tempered steels have already been heat treated at the steel mill and applying too much preheat can alter that tempering. In these cases, proper set point, temperature limiting, and temperature ramp rate of the welded part is critical.
► PHOTO GALLERY
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