Kemet Lapping Plates
Manufactured from a homogeneous mixture of synthetic resins, metal particles and key bonding/hardening. The plates are designed for Kemet’s advanced lapping technology, perfectly compatible with Kemet Liquid Diamond.
Benefits of using Kemet Lapping Plates
- Holds diamond particles firmly, ensuring both efficient stock removal and repeatable component surface finish.
- Ductile qualities cushion the diamond particles, preventing damage to the workpiece.
- Produced in varying hardness values so that even the softest material can be safely lapped with diamond particles without the fear of impregnation.
- Easy control for optimum flatness.
- Lapping/polishing plates available to fit all makes of lapping machines with plate diameters up to 3000mm.
- Dissipates heat and prevents laminar flow of lapped surfaces.
- Supplied with a cast iron backing plate for maximum stability.
- Recommended when high precision flatness and surface finish are required.
Iron Lapping PlatesThe most commonly used plate. For general purpose stock removal and lapping operations.
Copper Lapping PlatesUsed to lap softer materials where fine lapping and polishing are the primary requirements.
Copper SP2 Lapping PlatesCan be used for lapping or polishing hard and medium hardness materials.
PR3 Lapping PlatesUsed to generate highly reflective surface finish. Ideal for pre-pad polishing for minimum roll off.
XL Lapping PlatesReplacement for Lead/Tin plate, used for mirror polishing.
XP Lapping PlatesGives improved flat polished surfaces on many materials. Flat mirror-like surfaces can be produced on many hard materials.
Tin Lapping PlatesOne of the softest Kemet Plates used for mirror polishing with fine grades of Kemet Liquid Diamond.
Ceramic Lapping PlatesOne of the hardest Kemet Lapping Plates. Used for special applications often where a cleaner lapping process is required.
FP PlatesA replacement for the Kemet Lead/Tin Plate, the Kemet FP Plate gives good stock removal, whilst producing high quality surface finish and flatness with Kemet Diamond Slurry.
Lapping Plate Grooving
Lapping plates can be supplied grooved to suit specific applications. A cross hatched pattern is common on Cast Iron Hand Lapping plates and Dual Face Machine plates and gives increased stock removal rates due to the additional cutting edges generated on each groove. A Spiral groove pattern is used primarily when polishing parts that need to have a good surface finish and flatness, allowing contamination to be carried away from the cutting surface and making it easier to keep the lapping plate contact surface flat. The edges of the groove maintain good stock removal even through the diamond particle size may be small.
Kemet Annular Grooved Plates
These plates are designed for precision shoulder lapping of a wide range of parts, such as fuel pump gear faces and pressure relief valve caps. These are bespoke manufactured and the groove width and depth of plates need to be specified when ordering.
Kemet Lapping Plates are available as Lift-Off Discs. Discs are supplied mounted on an aluminium backing plate, which locates onto an aluminium drive plate by means of three pegs. Lift-Off Discs can be easily changed and are recommended for light duty work where general flatness and precision finish are required.
Cast Iron Hand Lapping Plates
Hand Lapping Plates are suitable for laboratory, toolroom or maintenance workshops and can be used for lapping parts to extreme flatness in low volumes.
These plates are made from high quality, low porosity grey cast iron (Grade 300 to BS1452) and are usually serrated with a square cross-hatched pattern. Solid (unserrated) hand lapping plates are available for use with very small workpieces.
These are used with an abrasive grit, applied in paste form to give a uniform dull matt finish on a wide variety of metallic and non-metallic materials. Three standard sizes of plate are available (Other sizes available upon request):
|6” (150mm)||Cross Hatched||361021|
|8” (200mm)||Cross Hatched||360835|
|10” (250mm)||Cross Hatched||360830|
|12” (300mm)||Cross Hatched||360198|
|18” (457mm)||Cross Hatched||360707|
|24” (610mm)||Cross hatched||361029|
We offer a variety of sizes from 3” to 24” diameter (Other sizes available upon request).
Soft Metal Alloy Hand Polishing Plates
Alloy polishing plates are for use with diamond abrasives, either in paste or spray form, to produce polished surfaces on components.
The plate is made of a lead-based white metal conforming to BS3332/F. This is a lead / tin / antimony alloy with traces of other metals and is an ideal soft metal matrix for diamond grains.
A small charging block is provided to load the soft metal surface with diamond abrasive. This is an essential step in preparing the lap plate prior to polishing. Two sizes of plate are available:
Cast Iron Lapping Plates
We offer a wide range of cast iron lapping plates to suit most lapping machines. Available in 15", 24", 36" serratted or solid. Other sizes available on request.
Hand lapping uses the same principles as machine lapping with respect to abrasive grade / plate selection / plate flatness.