Tungsten Carbide Hardness Range - Surface Engineering Forum
Cold Spray with Tungsten Carbide: LLBHW: 3: 13,258: 04-24-2015, 01:06 AM Last Post: Fermit : HVOF Tungsten Carbide - New Line Setup: David: 1: 5,289: 08-16-2014, 03:51 PM Last Post: Gordon : Tungsten Carbide HVOF Coated Ball Valves grinding and Lapping constraints --- Reg : sreenuvundela: 4: 11,959: 07-29-2013, 09:04 AM Last Post: Met.Eng ...
Brinell Hardness Test - Gordon England
On tests of extremely hard metals a tungsten carbide ball is substituted for the steel ball. Compared to the other hardness test methods, the Brinell ball makes the deepest and widest indentation, so the test averages the hardness over a wider amount of material, which will more accurately account for multiple grain structures and any ...
Effective Way of Testing hardness of Tungsten Carbide
Oct 30, 2015 · Cold Spray with Tungsten Carbide: LLBHW: 3: 13,174: 04-24-2015, 01:06 AM Last Post: Fermit : HVOF Tungsten Carbide - New Line Setup: David: 1: 5,245: 08-16-2014, 03:51 PM Last Post: Gordon : Tungsten Carbide HVOF Coated Ball Valves grinding and Lapping constraints --- Reg : sreenuvundela: 4: 11,825: 07-29-2013, 09:04 AM Last Post: Met.Eng ...
Tungsten carbide coating problem - Surface Engineering Forum
Coating 1 has hardness about HV300 850 but coating 2 about 550. The hardness difference is bigger than I thought. Coating 2 seems to be more brittle than coating 1 during Vickers hardness test. More preserved WC should result in acceptable hardness at least such as HV300 750. But what's wrong with this coating? (The hardness result was double ...
Tungsten - Gordon England
Tungsten is mainly used in the production of hard materials based on tungsten carbide, one of the hardest carbides; Tungsten is useful in applications requiring its high density like weights, counterweights, ballast, Tungsten carbide based cermets are thermally sprayed to produce extremely wear resistant coatings; Tungsten is the heaviest metal ...
Tungsten Carbide HVOF Coated Ball Valves grinding and Lapping ...
It is not easy process. I work for company which is specialist for this kind of job. Metal seated ball valves. We can apply tungsten carbide, chromium carbide, stellite or inconnel on ball and seats, then we make grinding and lapping. It is not easy. The good and quality grinding is for long development. Believe me.
Wear Resistance - Gordon England
Ideally, the material should have a hardness that is in excess of that of the mating surface or abrasive particles. The following coatings are commonly used: Cermet coatings like tungsten carbide/cobalt Chromium carbide/nickel chromium (particularly for high temperatures above 540 C) Oxide ceramics like chromium oxide and alumina
Hardness Test in TC coated surface - Surface Engineering Forum
I am working for an oil & gas company. We have had some issues with big size ball valves passing in our new platform. The Ball is made up of forged carbon steel overlayed with Inconnel 625 and contact area being tungsten carbide coated using HVOF process. The seat is inconnel 625 which is also coated with Tungsten carbide on the contact area.
Tungsten Carbide/Cobalt/
Jul 6, 2003 · Tungsten Carbide/Cobalt/ Posted by Nathan Villarreal on May 08, 2003 at 09:26:01: Hello can somebody, tell me all about they know including tecnical info, features, etc.
Tungsten Carbide - gordonengland.co.uk
Posted by Chris on February 20, 2004 at 07:32:11:. Dear Sir, What is the maximum build up possible while coating Tungsten Carbide with Plasma spray process & also with HVOF.