Hardbanding

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Has anyone here heard of "hardbanding" before?In this previous thread:  http://www.weldingweb.com/vbb/showthread.php?t=16853Weldgault mentioned that type S-2 TIG filler wire is preferred because "When droping tungsten in the puddle, so it will stay on top of the deposit", and this lead to the question, What the heck are you talking about?So this is where we will learn more about "hardbanding".I am interested to know:1.  Is this TIG or MIG?2.  Is this a mechanized welding process?3.  What size and shape are the tungsten bits?4.  Is it tungsten or tungsten carbide?5.  How are the bits dropped into the weld pool, is there a feed tube, how is the rate of feeding controlled, etc.?Here is some answers from a web search.http://www.hardbandingsolutions.com/http://www.arncotech.com/documents/f...ardbanding.pdf
Reply:Pulser, both of the sites you listed are a good references.  It is a Mig process, with Argon/Oxygen gas, in the spray mode.  It is a mechanized welding process.  It is tungsten carbide, in several shapes and sizes.  It is fed into the puddle by as tungsten feeder, conveyor belt, but some way to control the amount of material intering the weld pool.Up until 1993 all there was to use was ER70S-2 wire and since then everyone is trying to get on the bandwagon and produce a better wire for both the pipe wear and not wearing out the casing, if in a cased well.  In an open hole, Tungsten Carsbide is still used because the pipe is not going down in a cased hole. Drill Pipe is about $10,000 a joint and 2 years lead time.  Making hard banding and rebuilding the tool joints of drill pipe very appealing to the Drilling contractors and Rental companies,  Hope this helps a little.   John G.SMAW,GMAW,FCAW,GTAW,SAW,PAC/PAW/OFCand Shielding Gases.  There all here. :
Reply:So this is where we will learn more about "hardbanding".I am interested to know:1.  Is this TIG or MIG?2.  Is this a mechanized welding process?3.  What size and shape are the tungsten bits?4.  Is it tungsten or tungsten carbide?5.  How are the bits dropped into the weld pool, is there a feed tube, how is the rate of feeding controlled, etc.?pulser, i have an uncle who retired from this process, i will ask him to answer these questions. good welder but getting better
Reply:Read the Post after pulser.   JohnSMAW,GMAW,FCAW,GTAW,SAW,PAC/PAW/OFCand Shielding Gases.  There all here. :
Reply:A guy brought in his truck for Rear diff problems.  He works in a place that makes hammermills.  He uses that exact process.  I will ask more of him tomorrow.DavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:Originally Posted by David RA guy brought in his truck for Rear diff problems.  He works in a place that makes hammermills.  He uses that exact process.  I will ask more of him tomorrow.David
Reply:I will be replacing the guys rear diff monday.  I'll see him then.DavidReal world weldin.  When I grow up I want to be a tig weldor.