KREBS & RIEDEL Conventional Grinding Wheels and Tools

Brand: Krebs & Riedel
Material: Aluminium Oxide, Silicon Carbide, Zirconium Aluminium Oxide
Bonding: Synthetic-Resin Bonding, Ceramic Bonding
Grain: FEPA Series F from 12 to 400 (Very Coarse to Very Fine)
Description: Conventional grinding tools are abrasive tools used to shape and finish products such as metal, steel, ferrous and non ferrous materials. Every product demands its own particular process, and every process tends to have its own set of variables. Common grinding process include cylindrical grinding, surface grinding, creep feed or deep grinding, profile grinding, roll grinding, abrasive cutting, rough grinding and tool grinding. All of our tools, whatever the shape or process, have one thing in common: they grind – and they help you reach your targets safely and economically.
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Description

Perfection for every process. Every product demands its own particular process, and every process tends to have its own set of variables. We will supply you with precisely the wheels to match. Cylindrical grinding, the most common process. It is used to machine rotationally symmetrical workpieces of varying sizes and materials, inside and outside. This may be anything from tiny parts for use in engines, all the way to enormous rollers, weighing tons, used in the paper industry. We can supply you with wheels in the dimensions, composition and hardness you require and that produce ultra-precise results. Surface grinding is used mainly in the manufacturing of tools and moulds. Surfaces are machined plane parallel to the circumference of the wheel or its face. The growing diversity of materials involved demands effective, innovative and always lucrative solutions – all of which we have for you. Creep feed or deep grinding usually produces a tool in one single procedure. We have the right tools to cope with large amounts of grinding performed in small infeed increments – in other words, large contact arcs between the workpiece and the grinding wheel. Highly porous and quick cutting, they make this process fast and profitable. Profile grinding processes perimeters using profiled wheels. The workpiece, which could be a threaded or geared tool, defines the shape, structure and specifications of the wheel. For example, we use grain sizes and bonds adapted to radii and profiles. We can pre-profile these quick-cutting, dresser-friendly wheels for you – which saves you time and expense when setting up your system. Roll grinding is a process that involves intensive levels of grinding. Different rollers made from very different materials and in different sizes always require the right wheel. What remains the same, however, is the defined surface quality that you will achieve using our tools. Our ceramic-bonded CBN wheels are often a more economical alternative for roll grinding. Abrasive cutting, an extremely powerful process for use on a wide range of materials and with a wide range of machinery. These very thin wheels, which may or may not be reinforced with fibres, can be used universally for wet and dry cutting. And they are always much more profitable than alternative processes such as sawing. Rough grinding – the process for all things coarse. The machining speed is more important than the surface quality when it comes to deburring, grinding down and cleaning. For this application we can supply you with coarse, resin-bonded wheels – fibre reinforced if high machining speeds are involved. There’s no burr our wheels can’t cope with. Tool grinding usually means cutting special steels into the right shape – accurately. For this purpose we can supply you with a wide range of suitable grinding cups, plates and bevelled wheels for the production of tools. Show us your tool and we will provide you with the ideal grinding solution. Whatever you want to manufacture, and whatever process you want to use, we can make the perfect tool for it.

Once sharp – always sharp. Single- crystal and sintered aluminium oxide. To produce single-crystal aluminium oxide, single grains are crystallised out, which then have a more closed structure. The speed at which the molten mate-rial is cooled controls the resulting grain size very accurately. Sintered aluminium oxide has a very fine crystalline structure. During grinding, tiny crystals are broken away from the surface so that the grinding wheel always remains very sharp. Sintered aluminium oxide wheels generally grind at a lower temperature and for longer, and are used in situations in which CBN wheels would be uneconomical or technically impossible to use. Silicon carbide – few things are harder. Silicon carbide is made from coke and quartz sand at temperatures above 2,000°C – and it’s green and black at the same time. The green silicon carbide is hard to beat in terms of purity and hardness, and chemical processes can also be used to improve its quality further still, enabling the grinding of substances such as glass and ceramic. Elastic – and always sharp. Synthetic-resin bonding. Brittle-hard to soft. Ceramic bonding. Simple wheel – complex tool. It all starts with the demands you place on our wheels. We use aluminium oxide or silicon carbide in a range of grain sizes, bonding types, additives and pore-forming substances to build your wheel. Grain size and type influence the surface quality that you achieve. The bonding component, the com- pression level, the grain structure, the firing tempera-ture and duration – all of these ensure the correct hardness. Pore-forming materials combined with the right amount of pressure give the wheel the structure it needs. And of course, all of these factors also inter-act on one another.

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