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7 October 2019

Wear resistance coating - improving the life of metallic surfaces

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Damage through wear is an eventuality that all metallic objects will suffer. Metal objects, devices and components are vulnerable to the toil of frequent use. The causes of wear are, in themselves, damaging to components and can lead to a number of problems along the way. Three of the most common causes of wear are listed below.

Heat generation

Heat generation is inevitable in the manufacturing and fabrication of metallic components. Some processes, such as drilling or cutting, create a large amount of heat on the surfaces of both the machined components and the machining equipment. Combined with additional causes of metal wear, this can lead to a reduction in component quality. High-quality parts and components are a necessity in most industries and manufacturers are under pressure to deliver products of the highest standard. 

 

Friction

Friction is caused when objects slide, rub or move together in opposite or differing motions. The force of the friction creates resistance between the two surfaces and causes deterioration to both objects. The effects of friction on metallic surfaces range from the reduction in metal strength, surface quality and the overall structure of the metal object, to the build-up of heat. This can lead to a change in the behaviour of the action which can lead to incorrectly fabricated parts, badly formed components or irreversible wear on machinery or equipment.

 

Galling

Galling is the transfer of metal particles from one metallic surface to another when forces, such as friction and abrasion, are applied. When metallic objects move together at speed, particles shift from one surface to the next. The motion causes the buildup of heat and particles can weld to the opposite surface, causing it to become warped or for lumps to form. The resistance between the objects increases and wear occurs at a much faster rate.

 

Importance of protecting your surfaces from wear

There are many reasons to ensure that your surfaces are protected from the effects of wear. Arguably, two of the most important reasons are:

  1. The deformation/deterioration in the quality of manufactured parts or components. The consequences to a business for poor quality goods can be devastating, with parts having to be re-manufactured and the costs of material wastage. Business reputation may also be affected.
  2. The often irreversible damage to machinery or equipment. Companies suffer a loss of production time due to faulty equipment and costs for equipment repair or replacement can be very high. 

 

How can I protect against wear?

 A good wear-resistant coating protects metallic surfaces from the effects of damage caused by general use and wear. Alongside abrasion resistance, wear-resistant coatings provide surface hardening protection which helps to minimise the damage caused by friction and heat transfer. This, used in conjunction with the correct lubricant will help to improve the life of metallic surfaces.

NCH Asia-Pacific supplies wear-resistant coatings to cover virtually any requirement. Send an enquiry to us by clicking on the button below and we will contact you to discuss the best solution for your application.

 

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