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Forged or cast?

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发表于 2021-9-1 00:23:17 | 显示全部楼层 |阅读模式
Hey guys... been a while since I've made it back on. Got a quick question hopefully someone might have some ideas. I tried searching around some and couldn't find much yet.I got a couple hooks from someone that have been used and worn enough the guy would like them filled back in (areas circled in red) where the hook pulls on the rings. There are a couple sets of these like this. We started getting concerned over if these things were cast, but I am thinking (hoping) they wouldn't make something like this cast... so I would assume forged? They are hooks for the main drag net on a commercial fishing boat... (the guy doesn't want to use new hooks... don't ask  )I guess my question really is, any reason I can't clean up the rust down to bare metal, fill them in with my mig (75/25), and then smooth the welds back down?Thanks in advance...! Hope everyone had a good Turkey day... Attached Images- RyanLincoln Weld-Pak 140HDHypertherm Powermax 30HF 4x6 bandsawHF 21gal compressorCraftsman Commercial drill press4.5" Craftsman Professional angle grinder4.5" HF angle grinderOld benchtop table saw with a cutoff wheel and sawzall
Reply:He'll wish he'd spent the money to replace them, if they fail and he looses his trawl gear..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Originally Posted by DSWHe'll wish he'd spent the money to replace them, if they fail and he looses his trawl gear.
Reply:They are probably quench and tempered steel. I agree they are most likely forgings. They can probably be welded , if you knew the alloy and could pre-heat and post weld heat treat. If you weld on them without the proper procedure (this has nothing to do ability as a welder) then you have a catasprophic  failure waiting to happen.
Reply:I can see a liability issue with welding lifting/rigging gear.6 Miller Big Blue 600 Air Paks2 Miller 400D6 Lincoln LN-25's4 Miller Xtreme 12VS2 Miller Dimension 812 4 Climax BW-3000Z bore welders Hypertherm 65 and 85Bug-O Track BugPair of Welpers
Reply:Thanks guys... Kinda confirms already what I had that in the back of my mind, I don't want to be responsible if there is a failure. I think I will tell him to get new ones - RyanLincoln Weld-Pak 140HDHypertherm Powermax 30HF 4x6 bandsawHF 21gal compressorCraftsman Commercial drill press4.5" Craftsman Professional angle grinder4.5" HF angle grinderOld benchtop table saw with a cutoff wheel and sawzall
Reply:I am sure those are forged alloy pieces, I have some chains that look similar.  Mine are made by a company called Columbus McKinnon.  http://www.cmworks.com/rigging/Default.aspx?catid=3301They are very high strength, better than the grade 70 chains used on trucks.They are designed for hoisting and rigging, I wouldn't weld on them for liability reasons."The reason we are here is that we are not all there"SA 200Idealarc TM 300 300MM 200MM 25130a SpoolgunPrecision Tig 375Invertec V350 ProSC-32 CS 12 Wire FeederOxweld/Purox O/AArcAirHypertherm Powermax 85LN25
Reply:Originally Posted by ryanPSDThanks guys... Kinda confirms already what I had that in the back of my mind, I don't want to be responsible if there is a failure. I think I will tell him to get new ones
Reply:I don't know diddly about the fishing boat application, but I'll mention that worn dragline chains, much heavier and  with more wear than shown here, are routinely built-up and hard-faced. Are these a constant-wear item?What's actually on the line to try it? Good Luck
Reply:Suggestion- advise him that the hooks must be replaced, but you can hardface them to increase wear resistance.The potential loss of nets and any catch within is not worth going cheap on hooks. File that under "pay me now or pay me later." Very good of you to see if you could repair them however.
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