Precision Engineering: Lapping in Industries

In today's manufacturing industry, precision is everything. With increased competition and a demand for ever-higher quality products, manufacturers are turning to cutting-edge technologies to improve their processes and products. One such technology is precision flat lapping, which involves using abrasive particles to polish and refine materials to extremely high tolerances.

One of the key benefits of precision flat lapping is its ability to work with a wide range of materials. At our company, we are able to process a variety of materials, including metals, ceramics, and semiconductors. This versatility allows us to work with customers across a range of industries, from aerospace and defence to medical devices and electronics. Advantage of precision flat lapping is its ability to achieve extremely high levels of precision. With our state-of-the-art equipment and experienced technicians, we are able to achieve flatness and parallelism to within millionths of an inch, making it possible to produce parts with exceptional accuracy and consistency.

We are proud to have assisted a wide range of industries in improving their processes with the use of precision flat lapping technology. Our expertise in this field has allowed us to provide tailored solutions that meet the unique needs of each industry we serve. Some of the industries we have had the privilege of working with include aerospace, defence, medical devices, electronics, and many more. We are dedicated to helping our customers achieve the highest levels of quality and precision in their manufacturing processes, and we look forward to continuing to make a positive impact on these industries and beyond.

Oil, Gas, Petrochemical, & Power Generation

The oil, gas, petrochemical, and power generation industries require reliable and durable equipment. The use of Kemet Lapping Systems has become an accepted method for reconditioning mechanical seals in this industry. From softer seals like carbon to harder tungsten carbide and ceramic facings used in pumps, lapping and polishing systems can recondition and restore these seals to their optimal performance level. Additionally, large gate valves in stainless steel used on offshore oil rigs can also benefit from lapping and polishing services to ensure reliable operation and prevent leaks.

Petrochemical Industry

In the petrochemical industry, the use of lapping services has become an accepted method for reconditioning mechanical seals. With the introduction of larger lapping plates, it is now possible to recondition most types of seal and valve faces, ranging from softer seals such as carbon to harder tungsten carbide and ceramic facings. Lapping is used to improve the flatness, surface finish, and parallelism of seal faces, resulting in improved sealing performance and extended equipment life. Petrochemical manufacturers can benefit from using lapping services to reduce downtime and maintenance costs, while ensuring optimal equipment performance and safety.

seal face lapping

Chemical Processing

The chemical processing industry requires lapping services to recondition various mechanical seal types for flow control equipment and pumps. These seals can be made of various materials such as silicon carbide, tungsten carbide, and carbon. Lapping systems are used to repair and recondition these seals, which can save time and money compared to replacing them. The lapping process involves removing a small amount of material from the surface of the seal using an abrasive slurry, resulting in a precise and smooth surface finish.

Cutter Manufacturing

In the cutter manufacturing industry, lapping services are used to sharpen and recondition slitting cutters. These cutters can be made of tungsten carbide or hard steel, with a thickness of only 1.6mm, making them difficult to grind. Slitting cutters are used for cutting plastic film and foil in packaging and printing applications. Lapping systems are also used to sharpen cutter blades for paper envelopes. The lapping process involves removing a small amount of material from the cutting edge using an abrasive slurry, resulting in a precise and sharp cutting edge.

Electronics

The electronics industry requires lapping services for various applications, including lapping and polishing computer disk drive GMR heads, recording heads, lamination stacks, ceramic substrates, ferrites, transducers, glass to metal seals, detonators, and trimmers. These components require a high level of precision and surface finish to function effectively. Lapping systems are used to achieve the necessary surface finish and dimensions required for these components. The associated industries for these applications include research, defence, computers, mobile phones, television, and aerospace.

Food Processing

In the food processing industry, lapping services are used for the reconditioning of mechanical seals in sugar refineries, among other applications. Systems up to 700mm diameter are utilised for lapping and polishing canning dies, where a high degree of flatness is required with a good quality surface finish. Lapping also helps produce sharp edges on cutting rings associated with these dies.

General Engineering

In general engineering, lapping services are utilised to produce flat datum faces on components or products. These components may be irregular in shape and challenging to grind, making lapping an ideal option. Templates, jigs, gauges, and castings are currently lapped using Kemet Lapping Systems in this industry.

Jewelry

The jewelry industry often uses Kemet Systems to lap and polish products made from brass, such as belt buckles, pen clips, cuff links, and identifying logos. Lapping and polishing using Kemet Lapping and Polishing Systems produces good cosmetic surfaces that provide an excellent base for any subsequent gold plating operation.

Measuring Equipment

Measuring equipment relies on precision and accuracy, making lapping and polishing services essential. Micrometre spindles and anvils, gauge blocks, toolmaker flats, and microscope stages are just a few examples of equipment that require good quality flat polished surfaces. Lapping and polishing processes ensure that these surfaces are smooth, even, and free of any imperfections, leading to more precise measurements.

Medical Devices

The manufacture of medical devices requires the highest level of precision and safety. Breathing apparatus is one such device that needs good quality flat surfaces on various parts where light pressure sealing is essential. Brass and stainless steel are commonly used in these devices, and lapping systems provide the necessary surface finishes to ensure proper function.

Racecar Industry

In the racecar industry, lapping services are used to polish and refine components with metal to metal sealing faces, ensuring their optimal performance. Commonly lapped components include diesel injectors, water pump parts, and small ceramic type seal faces. Lapping and polishing processes are particularly critical in this industry since any imperfections in the sealing faces can compromise the engine's performance and safety. By using lapping services, racecar manufacturers can achieve precise and accurate sealing surfaces that guarantee optimal performance and safety.

Pneumatic Equipment Industry

The pneumatic equipment industry utilises metal to metal seal faces in various components, such as compressors and flow control devices. Lapping services are used extensively in this industry to refine these seal faces and ensure their optimal performance. Brass and stainless steel seal faces are common in this industry, and lapping services are used to improve their flatness and surface quality. Kemet Iron Lapping Systems are used to produce acceptable seal faces on hard steel and tungsten carbide spray gun nozzles. By using lapping services, pneumatic equipment manufacturers can achieve precise and accurate sealing surfaces, ensuring optimal equipment performance and safety.

Power Generation

Power generation is a critical industry that requires high-quality components to ensure reliable and efficient operations. Both nuclear and conventional power stations use lapping systems to recondition and produce flat sealing faces on components. These components include valves, pumps, and flow control equipment.

Pump Seals Manufacture

Pumps are used extensively in various industries to move liquids, including chemicals, oils, and water. Companies involved in the manufacture and reconditioning of pumps use lapping systems to produce flat seal faces on mechanical seals and flow control equipment.

Shoulder Lapping

Shoulder lapping is a specialised lapping service used for components that have integral shafts, such as gear faces and aerospace fuel and hydraulic systems. These components require very good flatness and surface finish on faces that have integral shafts, making it impossible to present the faces needing lapping to a normal lapping plate. Kemet has developed automated systems to overcome this challenge, replacing hand finishing techniques that are both time-consuming and variable. Kemet's automated systems can process these types of parts in their sub-contract facility, generating flatness of less than 0.0005mm (0.5 micron). To receive this type of service, customers need only send a drawing of the part needing processing along with quantities. Kemet will then calculate exactly what is needed and issue a quotation, which will include a bespoke annular groove plate and an optical flat specifically for the customer's part.

Valve Seal Manufacture

Mechanical seals are an essential component of industrial machinery that prevents leakage of fluids, gases, or contaminants. Kemet Lapping Systems are extensively used in the manufacture of mechanical seals due to their ability to produce precise surface finishes with high flatness. The most commonly processed materials in valve seal manufacturing include tungsten carbide, stellite, ceramic, silicon carbide, carbon, and brass. Kemet's lapping systems can lap seal rings up to 12” diameter under production conditions to achieve mirror surfaces with flatness to 2 or 3LB. This level of precision is crucial in ensuring the effective functioning of mechanical seals in industrial machinery.

shoulder lapping

Toolmaking

Toolmaking involves the production of tools used in various manufacturing processes, including press tool dies, moulds, and cutting tools. In toolmaking, lapping is used to produce sharp cutting edges and precise surfaces that ensure accurate and consistent manufacturing processes. Kemet Lapping Systems are particularly valuable in toolmaking, especially for moldmakers who require precise and flat surfaces. Kemet's lapping systems can effectively lap press tool dies to produce sharp cutting edges that can withstand the high-stress conditions of manufacturing processes.

Process Development & Free Material Testing: How Precision Flat Lapping Technology is Revolutionising Manufacturing

At Kemet, we specialise in developing new products and processes utilising precision flat lapping technology. We work closely with our customers to understand their specific needs and requirements, and then use our expertise to create customised solutions that meet those needs.

Our process begins with a free-of-charge evaluation of our customers' samples. We carefully examine each sample to determine its unique characteristics and identify any potential challenges or issues that may arise during the lapping process. We then issue a comprehensive report that covers all aspects of the process, including details of abrasive, lapping plate, workholding, inspection, cleaning, and likely consumable costs involved.

But our services don't stop there. Once we've developed a process that meets our customers' needs, we continue to work closely with them to refine and improve that process over time. We provide ongoing support and guidance, helping our customers to maximise the efficiency and effectiveness of their manufacturing operations.

We are able process the following materials

Acrylic
Alloys
Alumina
Aluminium
Aluminium Nitride
Anodised Aluminium
Beryllium Copper
Bone
Boron Carbide
Brass
Bronze
Carbon
Carbon Fibre
Cast iron
Ceramic
Chrome Plate
Cobalt Chrome
Compact Disc
Concrete Cement
Copper
Diamond Tools
Epoxy Resin
Ferrite
Fibre Optic
Film Guide
Gallium Arsenide
Germanium
Glass
Gold
Graphite
Inconel (Cobalt/Nickel)
Internal Seal
Keronite (ceramic)
Molybdenum
Mould insert or cavity
Neumonic Steel
Nickel
Piston Rings
Plastic
Polyethermide
Quartz
Sapphire
Silicon
Silicon Aluminium Alloy
Silicon Carbide
Sintered Materials
Spherical valve
Stainless steel
Steel
Steel (Hard)
Titanium
Tool Steel
Toughened Steel
Tungsten carbide
Tungsten Copper
Vulcanised Fibre
Zinc Selenide
Zirconate (Lead) Titanate

If a material does not appear in the list, please fill in the enquiry form or contact Kemet on +44(0)1622 755287

All processed samples are returned with detailed technical process reports including detailed surface finishing measurements, free of charge

Contact Kemet

kemet ISO 9001

BSI number Q05919

Over 85 years of service to industry

Your subscription could not be saved. Please try again.
:)

Signup to receive our special offers

Cookies & Privacy Policy | Kemet International Ltd. Subsidiaries
© 2023 Kemet International Limited is a company registered in England and Wales with company number 344017. VAT number GB202934881.

Cookie Notice

This site uses cookies to ensure the best experience. By continuing to use this website, you agree to their use. Learn more about our privacy policy.