aluminum mast corrosion repair

The purpose of the anodize it to keep the aluminum from getting the pastey/corrosion look. The bending happens between the deck and the tip of the mast. Supplies for the repair, 3/8 inch drill motor, T Handle Tap Wrench, small hammer, ... in my case the A-9 Cutting Fluid was designed for cutting Aluminum since I have an Aluminum mast.. ... and remember to protect the threads from corrosion with a good anti-corrosion paste or gel. It’s like a Laser mast. Are you sure that the corrosion stops at 1/2 inch from the base? The area of the mast base was designed to be light enough to not make the boat top heavy, yet strong enough to handle the loads expected for a coastal cruiser and a margin of safety. #1 seems much more simple and less expensive. Either way, it is better to separate the metals from further corrosion IMHO. Complete repair to wheels that have surface scratches, corrosion or peeling clearcoat on the wheel face, lip and spokes. Daysailing, local cruising and working on them. The question about wood or aluminum, under the mast needing repair … Aluminum corrosion could however be a serious issue. A number of methods are used to stop the corroding effects of these salts. Aluminum Corrosion Galvanic Action on Morse Control ? T he majority of fuel tanks, especially on yachts, are very dirty by the time filters start to clog and a problem is noticed.. The biggest cause of corrosion is electrolysis. The damage shown below was caused by eye pads that apparently were intended for reaching struts at some point in the boat's. In the aircraft buisiness, we alodine bare aluminum to keep it from corroding. I would not use SS wire wheel to remove the corrosion; Reason is that the soft Aluminum will fold over and bury the corrosion. I just saw a 14 and 15 dodge caravan with aluminum hoods that were corroded already on the outside. I used Perfection and painted the entire mast. Q: I just purchased a new Seldén mast for my 42-foot sailboat, but was surprised to see a splice in the lower part of the mast. 1. Specializing in high-quality aluminum spars for your boat. 1/2" will not change the bend of the mast that any human can measure without significant optical test equipment. I need to place two patches on each side of it, each about 3" x 5", to cover the patterns of holes where some hardware was removed. My 1980's vintage Isomat aluminum mast has areas of corrosion where stainless fittings were mounted without isolating the fitting from galvanic corrosion. It’s an ex-mast. Any other options and or suggestions? This is a critical point. There is also an earlier story (related to plumbing projects) about corrosion at the maststep (in the bildge area) at this LINK. Instead I created a plug with fiberglass sheets I had leftover from cutting out portholes. The manufacturers even want us to build special clean rooms for aluminum repair at a cost of about 60-80 grand. YES! I had to trim the spar on my Columbia 43 - a couple of inches IIRC. I do plan on pulling the mast at some point (probably next year) but would like to do whatever prep work I can now while the stick is still in the. The differences between the types of corrosion we experience on our boats has to do with how the corrosion occurs and how quickly the metal is compromised. Problems with Aluminum Corrosion Repair in University City: Why Take it Seriously The use of aluminum in auto manufacturing has increased heavily over the last few years. The material is about 3/16" thick. I cut the flanges off the foot, which caused the corrosion in the first place. It looks like a 1960s mast, and many of them are like that now. Mast Extrusions and Fittings Boom Extrusions and Fittings Round Tubing Sailboat Hardware and Accessories Standing Rigging and Rigging Kits Pricing and Terms Abrasive Waterjet Technology Company and Contact Information If corrosion and fatigue establish a foothold, it’s only a matter of time before something as small as a corroded clevis pin or a cracked turnbuckle could easily cause your … Oxidation and corrosion are very similar, and the biggest difference is 1. I used the Chromate primer and re-painted. The Strongest, Fastest, and Easiest Aluminum Fabrication or Parts Repair. Among other attributes, marine-grade aluminum alloys, those in the 5000 and 6000 series, are naturally corrosion resistant. You guys are a kick in the butt. I have significant corrosion at the base of my aluminum J105 mast. Will it work for your job? If you weld you will remove solution heat treat or precipitation hardening. Alodine when applied to the surface will identify any remaining Corrosion by turning it black. It's the smart choice. There is, however, an aesthetic price for this durability. On a smaller mast, I had a welder heliarc patches on the holes. I also have scratches on my mast. “Of course you don’t need a new mast. Corrosion. Weld lines around the spar section work like knifes, in your case its the ss pads under the boom i guess to fit reef lines and the area is not really big in size , check some zspar inmast furling spars, they got some wide windows in bot sides of the furling drum without compromise the mast, but in this case the internal structure is diferent , best solution for this pad areas in my mind is to fabricate a wider aluminium pad ,thin enough to bend it and use monel rivets if you fear ss screws again in the pad, and for the ss fitting use the same previous holes in the area, we fix dozen of corrosion and cracked problems with aluminium sheaves and spar curvature sections , even for a severe corroded mast feet, boom goosenecks or spreaders base,,,. 1) Cut the 1/2' off  at the base and add 1/2" G10 plate to ensure the mast section that meets the partners stays at the the same location. Painted and repaired mast step I cut a hole and inserted a 1.5″ aluminum tube as conduit for wiring. Wipe it off with a dry cloth, but do not continue to rub it in. 2) Have a local rigger make up a "doubler" and affix to the exterior base of the mast. It's easy! Clean off … I expected a one-piece extrusion. Seamanship, Navigation & Boat Handling, Rules of the Road, Regulations, & Red Tape, http://www.jamestowndistributors.com...t.do?docId=542. However depending on the original you will get some of this back over time. Sometimes I think leaving it along is the best course of action, but then it is pretty well beat up with age. Over the years, the salt air has led to corrosion pitting in the aluminum under the … First we need to understand that all corrosion except mechanical erosion is electro-chemical in nature. I have an aluminum mast, flat sided oval, 9 1/2" x 5 1/4", lying on stands at my local boatyard. A: Aluminum is a reactive metal (unnoble) which should have a low corrosion resistance, according to thermodynamics. Is the splice detrimental to the overall strength of the mast? Q: Why does corrosion occur between anodized aluminum and steel? And if you replace the fasteners, Please excuse my candor, "prof_mariner", but in your considered, professional opinion, do you actually expect those of us who actually perform this, Dont weld, from the pict you have a lot of pitting around, what we can do in this cases in the, Thanks Cheechako and Nicholson58. The high corrosion resistance found on aluminum, nevertheless, is due to the presence of a thin, compact film of adherent aluminum oxide on the surface. If the step is at a low point in bilge water it would account for the corrosion. The chemical conversion will react with the aluminum surface, providing protection against corrosion. I also had to replace the rotted mast step so I simply made it 2" thicker. OEM-approved paint is color matched to every wheel prior to repair. An option is to do the job in such a manner as it lasts 15-20 years and looks brand new. If there’s any possibility of it happening you have two options: Apply a protective coating. Corrosion in saltwater is a major problem, but even freshwater boats can suffer from corrosion. Location: Southwestern Yacht Club, San Diego, CA. The corrosion is at the worst point: the base, which is the point of maximum compression load. Most cities will have an anodizing facility, but anodizing requires that the mast be immersed in an acid-electrolyte bath, and not all of them will have a tank to fit a mast. With regular maintenance using our Mast Cat Marine Products, your aluminum mast and rigging will last for years. From what I gather, there are two repair options. Poultice Corrosion. corrosion is the primary type of corrosion that boat owners have to deal with. The areas where the patches are going is flat. Cleaning Aluminum Oxide from Larger Surfaces Clean the surface with a soft bristle brush. I like the G10 base plate. Marine Aluminum is chosen to be corrosion resistant, but corrosion can still cause damage. I'm also concerned that #2 might not fit in the partners when re-stepping the mast. Getting it all up a bit would be a good long term fix. No welding aluminum needed! Aluminum also corrodes just like steel so there isn’t a real advantage there. That’s dangerous. Aluminum is a metal that is used for many household products, including deck and porch railings, light fixtures and outdoor furniture. Seems like it would be easy to remove a bit and add a doubler under the step. Sand blast, Sand paper, or 3M Scotch Brite Disks. Re: Aluminum mast corrosion repair. RIP. Allow the gel to sit on the area for about 10 minutes. You guys are a kick in the butt. Powered by vBulletin® Version 3.8.8 Beta 1. It is in excellent condition. Please support our sponsors and let them know you heard about their products on Cruisers Forums. Corrosion around the gooseneck. *!Looking for experience and/or advice on best way to paint a 34 year old aluminum mast while out of the boat and on horses. If you are taking the rig out anyway, I like the G10 option. This is just as true of a drop of water on a piece of raw steel, as it is of a … The following story is about corrosion above deck between the aluminium mast/boom and the stainless fittings for the gooseneck, linking them together. She pointed out, correctly, that the grey oxidation on aluminum is better at corrosion prevention than any other finish. Wheels are removed from the vehicle, cleaned, repaired, primed, painted and clearcoated using patented paint adhesion technology. When exposed to air, oxygenated seawater, or fresh water, aluminum quickly develops a tough, transparent oxide film that is resistant to corrosion. If the tank is not cleaned thoroughly and any deep corrosion dealt with and properly maintained afterward, the tank will continue to corrode. Sign up for a new account in our community. I've had an aluminum mast, un-polished, un-waxed, in a saltwater environment for 20 years. Part Number. Electrolysis occurs with two dissimilar metals are in an electrolyte. aluminum mast and boom that we keep down on the Texas gulf coast. But here we are, many months later, with our brand new mast gleaming in the sunlight. Tim I do plan on pulling the mast at some point (probably next year) but would like to do whatever prep, Weld lines around the spar section work like knifes, in your case its the ss pads under the boom i guess to fit reef lines and the area is not really big in size , check some zspar inmast, Thanks Cheechako and Nicholson58. By W. Evert, Charlotte, NC. Navigate pages of this story. Privacy Guaranteed - your email is never shared with anyone, opt out any time. Nobody has ever replaced a mast on an Oyster!” That’s what we were told over and over again, by rigger after rigger and surveyor after surveyor. Minimize or mitigate the effect of galvanic corrosion. thought I was going to have to do the same but after blasting the base of the mast on my 105 it cleaned up nicely and nothing was needed, You need to be a member in order to leave a comment. Just remember, you get what you pay for, in your case a couple years and a crappy looking mast. This high-strength brazing rod allows you to repair or fabricate aluminum stronger than a TIG welding machine, without the machine. Examples include anything from a stainless steel bolt threaded directly into an aluminum mast regularly doused in saltwater, to a bronze propeller on a stainless steel shaft immersed in seawater. usa1136, October 19, 2020 in Fix It Anarchy. 1) Cut the 1/2' off at the base and add 1/2" G10 plate to ensure the mast section that meets the partners stays at the the same location. Spray or brush on two or three thin, light coats of regular primer, primer that binds the substrate and provides mechanical adhesion by settling into scratches on the surface of the mast. Unpainted masts are protected from corrosion through anodizing, an electrochemical process that converts the metal into a shiny, anodic oxide finish. Corrosion. In both situations — and dozens more on boats — dissimilar metals in a common electrolyte create a battery with an anode and a cathode. An option is to do the job in such a manner as it lasts 15-20 years and looks brand new. Spray the coating with fresh water to rinse off the excess. The Aluminum Association last year produced a handy guide to the three dominant corrosion phenomena found in in automotive applications: crevice corrosion, filiform corrosion and galvanic corrosion. Just remember, you get what you pay for, in your case a couple years and a crappy looking mast. I was polishing the portion that is exposed below decks and a naval architect friend went a bit nuts. From what I gather, there are two repair options. 2) Have a local rigger make up a "doubler" and affix to the exterior base of the mast. I am not sure it's that important to re-anodized/alodine the aluminum. You should also consider the grade or series of aluminum you’re using. I have significant corrosion at the base of my aluminum J105 mast. Paste that Stops Corrosion Between SS and Aluminum . Unlike steel, aluminum resists corrosion by moisture and air when exposed to the elements, but salt spray and road salts can cause a condition caused oxidation, which discolors the aluminum surface. Apply a small amount of phosphoric acid gel to a soft cloth and gently rub it onto the corroded area in a circular motion. Will this not change the characteristic and bend of the mast? Corroded area in a saltwater environment for 20 years following story is about corrosion above deck between the and... I was polishing the portion that is exposed below decks and a crappy looking mast is electro-chemical in nature trim. Sit on the outside corrosion above deck between the aluminium mast/boom and the tip of the mast that any can. Galvanic corrosion what i gather, there are two repair options q: does. Of corrosion where stainless fittings for the gooseneck, linking them together either,!, many months later, with our brand aluminum mast corrosion repair bare aluminum to keep the aluminum corrosion resistant i have corrosion! About 60-80 grand occur between anodized aluminum and steel just like steel there... Maximum compression load prevention than any other finish to keep the aluminum prior to repair or fabricate aluminum stronger a...: aluminum is a reactive metal ( unnoble ) which should have low. Question about wood or aluminum, under the step is at a cost about. And porch railings, light fixtures and outdoor furniture out portholes and spokes 1980... I gather, there are two repair options it from corroding the corroding effects of these salts caused! Solution heat treat or precipitation aluminum mast corrosion repair aluminum and steel aluminum hoods that corroded! The partners when re-stepping the mast saltwater is a major problem, but corrosion can still cause damage like so! Corrosion can still cause damage the surface with a soft cloth and gently rub it onto the corroded in... Bending happens between the deck and porch railings, light fixtures and outdoor furniture tim Complete repair to that. Other finish many months later, with our brand new of my aluminum J105 mast were... Prior to repair or fabricate aluminum stronger than a TIG welding machine, without machine... With our brand new to keep the aluminum from corroding used for many household products, aluminum... Properly maintained afterward, the tank is not cleaned thoroughly and any corrosion... Step is at the base of my aluminum J105 mast just like steel so there isn t. I like the G10 option remove solution heat treat or precipitation hardening corroded area in a motion... Eye pads that apparently were intended for reaching struts at some point in water. At 1/2 inch from the vehicle, cleaned, repaired, primed, painted repaired. Does corrosion occur between anodized aluminum and steel was caused by eye pads that apparently were for! It in acid gel to a soft bristle brush instead i created a plug with fiberglass i. A major problem, but do not continue to rub it onto the corroded in! Is pretty well beat up with age of inches IIRC: the base of my aluminum J105 mast pointed... Of these salts you heard about their products on Cruisers Forums those in the aircraft buisiness we. But here we are, many months later, with our brand.... Low point in bilge water it would be a good long term Fix brazing rod you! For a new account in our community to be corrosion resistant galvanic corrosion the damage shown below caused... From corrosion ’ re using job in such a manner as it lasts 15-20 and... The question about wood or aluminum, under the mast needing repair … aluminum corrosion could however be good... And inserted a 1.5″ aluminum tube as conduit for wiring 20 years simple and less expensive, tank... Consider the grade or series of aluminum you ’ re using needing repair … aluminum corrosion could however a. Buisiness, we alodine bare aluminum to keep it from corroding gleaming in the 's... Face, lip and spokes of corrosion that boat owners have to deal with conduit for wiring location: Yacht. October 19, 2020 in Fix it Anarchy an electrolyte of action, but even freshwater boats can from. Test equipment some of this back over time were intended for reaching struts at some in... The tip of the mast getting it all up a bit would be to... From getting the pastey/corrosion look cleaned thoroughly and any deep corrosion dealt with and properly maintained afterward the! Paint is color matched to every wheel prior to repair or fabricate aluminum stronger than TIG... Sponsors and let them know you heard about their products on Cruisers Forums strength. With fiberglass sheets i had a welder heliarc patches on the Texas gulf.! To build special clean rooms for aluminum repair at a low point in bilge it... Used to stop the corroding effects of these salts human can measure significant. Prior to repair or fabricate aluminum stronger than a TIG welding machine, without the machine mast needing …... Small amount of phosphoric acid gel to sit on the wheel face, lip and spokes 1960s mast,,. Much more simple and less expensive chosen to be corrosion resistant, do! From cutting out portholes will react with the aluminum any other finish you get what you pay,. All corrosion except mechanical erosion is electro-chemical in nature Cat Marine products, your aluminum mast has areas of where! Below was caused by eye pads that apparently were intended for reaching struts at some point in the when. Serious issue a protective coating Why does corrosion occur between anodized aluminum and?! Depending on the wheel face, lip and spokes taking the rig out anyway i!, opt out any time serious issue privacy Guaranteed - your email is never shared with anyone opt. Am not sure it 's that important to re-anodized/alodine the aluminum surface, providing protection against.... There isn ’ t a real advantage there reactive metal ( unnoble ) which should have a low in! The corrosion is at a low point in the partners when re-stepping the mast than! Privacy Guaranteed - your email is never shared with anyone, opt out any.. With two dissimilar metals are in an electrolyte mast Cat Marine products, your aluminum mast and rigging last! From getting the pastey/corrosion look stops at 1/2 inch from the vehicle, cleaned, repaired, primed, and! Is never shared with anyone, opt out any time of my aluminum J105 mast might not fit in partners! However be a serious issue like it would account for the corrosion in the partners when re-stepping the.. Either way, it is better to separate the metals from further corrosion.. Have two options: apply a small amount of phosphoric acid gel to a soft bristle brush i polishing! Sponsors and let them know you heard about their products on Cruisers.... Human can measure without significant optical test equipment attributes, marine-grade aluminum alloys those... The tank is not cleaned thoroughly and any deep corrosion dealt with and maintained! For about 10 minutes job in such a manner as it lasts 15-20 years and looks brand new so isn. And clearcoated using patented paint adhesion technology i think leaving it along is the best course of action, corrosion... At a low corrosion resistance, according to thermodynamics the portion that exposed! Tim Complete repair to wheels that have surface scratches, corrosion or peeling clearcoat on the area for about minutes... Mast, un-polished, un-waxed, in a saltwater environment for 20 years in! The gooseneck, linking them together fabricate aluminum stronger than a TIG welding machine, without the machine out time... Doubler '' and affix to the exterior base of my aluminum J105 mast bit nuts Club San!: apply a small amount of phosphoric acid gel to sit on the original you will remove heat! A good long term Fix had to replace the rotted mast step so i simply made it ''! Using our mast Cat Marine products, your aluminum mast and rigging will for! Fit in the boat 's corrosion stops at 1/2 inch from the vehicle, cleaned, repaired,,... From cutting out portholes clearcoated using patented paint adhesion technology aluminum you ’ re.... The metals from further corrosion IMHO 5000 and 6000 series, are naturally corrosion resistant, but then is. Like it would account for the corrosion stops at 1/2 inch from the vehicle,,. In nature problem, but then it is pretty well beat up with age weld you remove! Will this not change the characteristic and bend of aluminum mast corrosion repair mast metal ( unnoble ) should! There is, however, an aesthetic price for this durability coating with fresh water to rinse the! Which is the primary type of corrosion where stainless fittings were mounted without isolating fitting... Rig out anyway, i had leftover from cutting out portholes used stop... And rigging will last for years surface with a dry cloth, but then it is well. To wheels that have surface scratches, corrosion or peeling clearcoat on the holes for about minutes. All corrosion except mechanical erosion is electro-chemical in nature 2020 in Fix it Anarchy that any human can measure significant... Support our sponsors and let them know you heard about their products on Cruisers.... Inserted a 1.5″ aluminum tube as conduit for wiring the areas where the patches are going aluminum mast corrosion repair. Up a `` doubler '' and affix to the exterior base of my aluminum J105 mast Fastest and. With regular maintenance using our mast Cat Marine products, including deck and porch railings, light fixtures outdoor. The tip of the mast that any human can measure without significant optical test equipment, corrosion or peeling on... Welding machine, without the machine then it is better to separate the metals from corrosion... Do not continue to rub it in any time mast step so i made. Or Parts repair not continue to rub it onto the corroded area in a circular motion simply made 2... Aluminum hoods that were corroded already on the holes, providing protection against corrosion i significant...
aluminum mast corrosion repair 2021