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Commercial Coatings (PVD)

Using PVD coatings on metal components and tools is becoming increasingly popular and necessary, as these items are required to perform tasks that are beyond the capabilities of the base metal. One of the main reasons for using coatings is to increase the surface hardness far beyond the ability of conventional heat treatment.

This is where Physical Vapour Deposited (PVD) type coatings are particularly useful. Their hardness is typically 3-4 times harder than heat treated steel, and because the coating follows the component geometry exactly and is  typically 1 to 4 microns thick, often no tolerance change is necessary to accommodate the coating.

Wallwork Cambridge, part of The Wallwork Group, offer a range of Ultra hard PVD coatings deposited by electron beam or magnetron evaporation, it is the smoothest and most defect-free method of PVD coating.

The coatings offered cover most applications but the high quality nature of the coatings make them more suitable for high value precision components and tools such as, surgical implants and instruments, gas turbine blades, motorsport components, coining dies etc.

New White Paper on Alternatives to Hard Chrome Plating

Hard Chrome Plating (HCP) was scheduled to be outlawed by the end of 2019, however, the sunset date has been extended by a few years. This has not stopped leading manufacturers across all sectors from implementing their long developed replacement strategies. As companies review the options, Ian Haggan, business development manager for hard coatings at Wallwork Group, proposes processes that have significant performance advantages. Download it here.

New Datasheets: Xylan and Molybdenum di-Sulphide

Xylan®, based upon the Whitford Xylan® family of coatings, are first and foremost dry film lubricants (DFL); however, they have many desirable secondary properties. These lubricants are combined in a matrix with the newest high temperature organic polymers resulting in ‘polymeric alloys’ formulated to provide unique and desirable properties. Read the full data sheet here.

Molybdenum di-Sulphide [MoS2] is one of the most lubricious coatings currently available. It has a dynamic coefficient of 0.01 and provides an exceptionally low slip surface, which can be used over a wide range of temperatures from cryogenic levels up to 400°C (fully run-in). MoS2 has the unique ability to lubricate precision components used within an extensive industrial sector spectrum. Read the full data sheet here.

 

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