Tungsten Carbide: An Essential Part of Non Stick, Wear Resistant Coatings






     Tungsten carbide is a popular hard metal used in industrial machineries, abrasives, and cutting tools. The said carbide is two times stiffer than steel, and is similar to corundum when it comes to hardness. However, the metal used in industrial machineries is actually composed of its hard particles mixed with metallic cobalt.
This hard metal is basically produced via a powder metallurgy process, wherein its powder is added with metallic cobalt using ball mills. In order to hold the powders together during the next process (called compaction or pressing), a binder material is added. The compaction or pressing process is then done under very high pressure using a mechanical press or an isostatic chamber.
The product of the said process will have a consistency similar to that of a blackboard chalk. In order to increase ‘green’ strength and maintain the compacted shape, a small amount of wax, usually paraffin, is then added. During this state, the compacted product can be made into its desired shape through turning, grinding, milling, and drilling. It is then subjected to sintering, in which the product is placed in a vacuum furnace at a high temperature. After this process, a dense, hard metal is then produced.
Tungsten carbide in wear resistant coatings
As previously mentioned, tungsten carbide has a wide variety of uses, especially in industrial machineries. This hard metal is a highly favored material used in coatings that are resistant to wear. This can be attributed to the hard metal’s unique properties, one of which is abrasion resistance, which is primarily due to the metal’s hardness. The metal’s hardness also allows it to have high impact strength and fatigue resistance, properties which are chiefly important in materials exposed to continuous cycles of stress fluctuation.
Additionally, this hard metal is also able to withstand very high temperatures compared to steel tools. This temperature resistance, which is due to its high melting and boiling points, allows faster machining for tools coated with this metal. This kind of carbide is also capable of maintaining its hardness values at high temperatures.
These properties are the reasons why this hard metal is the favored material for parts that must have a high degree of durability and parts that must be able to tolerate all forms of wear, such as sliding abrasion and erosion. These properties provide longevity in applications wherein other materials would not last or would easily fail.
Tungsten carbide in non stick coatings
Non-stick is a term that refers to surfaces coated with polytetrafluoroethylene, or PTFE. A famous brand of PTFE is Teflon. Special polymers like PTFE reduce the surface energy of the substrate surface, which effectively prevents a variety of substances, such as adhesives, rubber, and plastic, from sticking. Tungsten carbide is added to non stick coatings to achieve a certain degree of roughness, plus wear-resistance and durability. This enables non stick coatings to tolerate various degrees of mechanical abuses that would normally destroy regular coatings.
With this carbide’s numerous useful properties, such as its hardness, abrasion resistance, high impact strength, and high fatigue and temperature resistance, it is no wonder that this hard metal is preferred in various industrial and mechanical products.






Article Source : http://www.abcarticledirectory.com

Chuck Donald is an expert when it comes to Metal Finishing teflon coating services,non stick,tungsten carbide . To find out everything about Performance Engineered Components teflon coating services,non stick coatings , visit his website at www.industrialcoat.com .


Posted on 2016-06-13, By: *

* Click on the author's name to view their profile and articles!!!


Note: The content of this article solely conveys the opinion of its author.


Animated RSS Symbol for the ABC Article Directory rss category feed ... Get Every New Technology Article Delivered Instantly!

Facebook Comments






Cartoon image of a figure holding a magnifying glass looking for articles in the ABC Article Directory

Still Searching? Last Chance to find what you're looking for with a Google Custom Search!



Custom Search

Or.... You can search this site using our Bing Custom Search!

Bing




Did You Like/Dislike This Article? Give It YOUR Rating!

Please Rate this Article

No Ratings Yet. Be The First To Rate This Article





/EDF Publishing. All rights reserved. Script Services by: Sustainable Website Design
Use of our free service is protected by our Privacy Policy and Terms of Service Contact Us

User published content is licensed under a Creative Commons Attribution-No Derivative Works 3.0 Unported License
.
Increase your website traffic with Attracta.com

Date:


Powered by ABC Article Directory

Create a Mobile Website
View Site in Mobile | Classic
Share by: