Norton 20X High Performance Abrasive Flap Disc

Norton 20X high performance type 27 flap discs are suitable for blending and smooth finishing on flat surfaces on a variety of metals. Norton flap discs are designed for right-angle, handheld, grinding machines for heavy stock removal and surface blending.

With a type 27 flap disc, hold the grinder in operation at an angle less than fifteen degrees to the work surface. Steeper angles will weaken the flap edges. The weight of the backing is designated by letters J, X, Y, T or M. J is the lightest and M is the heaviest. A more flexible backing will follow irregular contours of a workpiece better than a stiffer one. Stiffer backing is more suited for regular round or flat surfaces.

Coated abrasives have individual abrasive grains spaced at a predetermined distance from one another. This is a closed-coat disc. A closed coat covers 100 percent of the surface with abrasive grains, for more stiffness and better surface finish than an equivalent open coat, where abrasive grit covers 50 to 70 percent of the surface. This disc features a resin bond. Resin bonds have good moisture resistance, are harder and less flexible than glue bonds, and have good heat resistance and grain retention. Resin bonds are useful for abrasive operations with high operating speeds, impact, and sudden loading, as the resin bond is strong and can withstand rough treatment. Use with molded rubber back-up pads, using a hard pad for aggressive cutting, a medium pad for general purpose applications, or a soft pad for contours and fine finishing work.

Zirconia alumina is a self-sharpening abrasive that allows for a faster cut rate and longer life than aluminum oxide, due to its ability to fracture and refracture, creating new cutting edges. Zirconia alumina is often used for high stock removal on wood and metals.

Abrasives are used for a variety of applications from shaping a part to fine finishing, depending on the grit size. Low grit numbers like 40 are coarse and are used for removing excess material and shaping a part. High grit numbers like 400 are fine and help to create a smooth surface finish.

Norton Abrasives manufactures a wide variety of sanding, sanding, and polishing abrasives, and has been located in the United States since 1885. In 1990, Saint-Gobain purchased Norton, keeping its manufacturing facilities and offices in the same location. Norton/Saint-Gobain has been recognized as a Global 100 Sustainable Company, as well as earning ISO 9000 and 14001 certification for quality and environmental management standards.

Robot Work in Sewer Rehabilitation

According to Andreas Lieb, general manager of KA-TE, the idea for the new development came from a customer's request for a KA-TE system for milling in a factory hall. The hall entrance did not have the dimensions to accommodate the 3-m height of the system vehicle. The new development makes it possible to fit the entire system, including the hydraulic system, cable drum, compressor, water tank, water pump, and the electric system, as well as an extendable swiveling crane, into a single, independently stable steel frame. With this 850 kilo 2100x800x1750 mm (length by width by height) frame, it is possible to directly transport the system to its application site and the system, according to Lieb, is immediately ready to operate, even if it's just sitting on the ground. Even the installation into a vehicle of the customer's choice is very straightforward: The system is secured to the vehicle by only four screws; a cable connects the system to the control panel.

The KA-TE COMPACT system is equipped with a robot cable and an 85-m hydraulic hose hose kit and has the full functional capabilities of the reliable KA-TE system. The 250 liter integrated water tank is operated at a mobile control panel with a built-in keyboard and 15-in. flat screen monitor. The system can perform the entire range of milling and filling work as well as the work carried out by the KA-TE shield placing mechanism, whether in difficult-to-access areas such as cellars and tunnels or in level fabric halls, and without any sacrifice in functionality or long-trusted KA-TE quality.

In particular, it is international customers who stand to profit from being able to easily install the KA-TE COMPACT system in existing vehicles, says KA-TE CEO, Christian Noll. Since no special vehicle entry permit is required, shipping this system abroad is both easier and faster. The option is only available for milling robots. However, the system can be extended at any time to include filler robots or the KA-TE shield placing mechanism. The system has repeatedly proven itself in real life applications. One sewer rehabilitation business owner ordered a complete system vehicle, but would not have been able to meet the deadlines for his order due to the vehicle manufacturer's shipping schedule.