MAINTENANLE- AND REPAIR WELDING LINCOLN & ELECTRICWelding consumables for repair and hardfacing applications This brochure gives an overview of a complote range of welding consumables specially designed and selected for maintenance and had: facing applications. Experience shows that in case of mainlenance and hardlacing welding with sick electrodes is mesly preterred, For this reason the information has been primarely related to stick electrodes. Whore availabe the complementary prodvets have been listed To achieve the optimum welcing reslls in repair and hardlacing, iis of greal mportance to choose the mes! sullable welding consumable combined with the best welding method, ‘A remark has to be made regarding he steelgrades fo be welded, In alot of cases these steels are dificult to weld and special attention must be paid, ¢9, preheating More detailed informaton about applications and weldabilly can be found in the product catalogue and the specific master deta sheets. Welding mild steel and fine grained steel Pantatix Lunalloyed steel ote po Universal ruta coated stick electrade for new constructions and cu Ue a8 repair welding of steel with a minimum tensia strength up to 510 FoMW—Oumeh 71H Nima (steel grades $275-$355) FORASS _—_ Raah a Easy to weld in all postions including vertical down, an AC as well as DC- Suitable for low OCY vanstormers. Vary suilabie for tack ws ‘ing: litle epatier and easy slag removal BasoG Lunalloyed steel cunts Basic heavy coated stick electrode for very lowhydrogen weld metal, FC8" ——Ouspan THEM suitable fr constructions with a service temperature range from - 40 = to + 350 C. For butt welding of general structural steels, shipbuilding steels, boler stools and pipe stee! grades up to X60. Very smooth welding characteristics Conare 70 high strenght steel awa LN Basic coated stick electrode for welding high strength steels incon- FLA Oseenatrt __._Stuctions with steel grades $460-S620 and pipe lines APISL accor- FANGS __NERSH NRASOH 1. ding API SL X60-X60, Also suitable for welding cast steel grades Gwe [such as GS60 and grade C45 (Preheating in such cases required) — 3. The weld shows high impact taughness, typically down to ~40°C. > Kardo low yield weleimetal Low hydrogen basic coated stick electrode deposiing unalloyed, - weldmetal with alow yield. Specially designed or applicatans such a tii in ow ines. It is also sutable fr butler layers in unalloyed ‘and high alloyed stoel whon applied as clad stoel RepTec 53 CT/ GR ‘cutting and gouging Coated stick elactrade for euting ang are gouging of almost all mata- rials. The 63 GR is specially designed for weld joints preparation vmereas the 53 CT is specially designed for cuting applications. Materials include steel, grey cast iron as well as alainium and cop- per alloys Arc cutting can be carried out all postions except vertical up The elacttode requires high current and high arc voltage lero CA: pasenaoeatuccoedarewaisng AC: ensign FoAWss: et oo BCH: areca long" smo oecodee DC! geet una GMAW orem ae GraW——gasungsnHardfacing Wearshield BU 30 ‘moderate hardness to resist, ‘shock and abrasion Rulila coated elettode for build-up and bulttering applications. be Used as the final overlay on parts thal must bo machined or forged or asa base or other hardlacing deposi. Typical applications for build Up include: shovels and bucket ips, pump housings, dredge ang shovel bucket teeth. For harfacing crane and mining wheels, gears, sprockets, clutch jaws, cable drums. Wearshiela 15 Crin ‘severe impact or gouging Slick electrode to be used on joining Hadield manganese steel 10 ‘caroon steel, low alloy ste! or similar manganese steel. It provides & [premium austenitic manganese depost with an excellent resistance to cracking, Also to be used as bulcup on carton steel before deno- sion of chromium carbides hardfacing layers such as Wearshield 60 Applications include rairoad fogs, earth moving equipment, rebull «ing and joining af austenite manganese plates and parts, Wearshield Mi 40 metal-to-metal wear {and light abrasion lil bast: coated electrade which produces a machinable martan- sie deposit. The weld metal isa crack-free depost with a hardness range of of 42-45 HB dependent upon material dition. tis particu larly suitable lor applications involving siding, cling and metal-to ‘meial wear, coupled with resistance to mild abrasion. Typical applica- lions include: bucket links and bases, guide rolls, tractor als, crane wheels, ‘meta-to-metal wear ‘and light abrasion Futile basic coated electrode wich provides a martensitic wear resis tan steel deposit. The deposit is rot machinable in the as welded Condition, The weld metal isa crack-fee deposit with a hardness range of 52-58 HFe. It is particularly sultabie for applications ino ving si¢ing,rolingand meta-o-metal woar, but combined with a higher resistance to abrasion than Wearsrield MM 40, Applications include crane wheels skip wheels, cams, gear tecth sprackols and transfer tables, Wearshield MMt Wearshield mie) ‘metal and impact High recovery electrode (120%) forthe relatively ductile hardlacing ot Construction steel, cast siee! grades and high In wear resistant ‘ee, Applications include: earth moving and agricultural sing ‘components such as ralers, shovel boom heels, cable sheaves, ‘itcherteetns and conveyor screns, Hardness up to 58 HRc Metal metal wear; light abrasion. Apply an intermeciate (buffer layer with FepTec 126 on material senstive to cracking WEARSHIELD T&D metal to metal at elevated temperatures Basic coated stick alectrode for rebuilding of dies and cutting edges of too steels by harafacing. Applications: new and rebuilding of punch dies, shear blades, vimmers and larging dies, Resist mado. rate forces and impact. The hardlacing, afer cooling and also harde- ring & temper treatment, can ony be dressed by grinding. The dopo: sit can be machined ater annealing at 800-850 °C. Typical hardnass in as welded condition is HRe 58-62, ‘Wearshield 420 ‘moderate abrasion with corrosion and impact resistance Basic coated electrode providing a martensitic depost similar io AISI 420 siainless steel, The weld metal provides good resistance against abrasion caused by gfty materials combined with carresion and im- pact, It can be used for naralacing carbon stl, law alloy steel ana martensitic stainless stee!. Typical applications include. sand pumps. fans and valve seats for steam quid pipes. rae Fea Downe oWelding cast iron fest as ___ Wbragomstin stresses, a Selection of DC: pulsing arc, high penetration, good fusion current ype: G+ high dep rate, low penetration, high build-up AG: lowest heat input, preferable forthe joint il RopTec Cast 31 NiFe for nodular cast iron Basic grape coated electrode vith NiFe core vitefB-metl for ‘pair welding of globular cast oa, white end black temper cast and Austenitic cast ron win globular graphite. But walds between sea) GCA and globular cast von. The Bimelal care wie provides good elec Gal cndctuy whic prevents he sectode fom oveaing, On ‘AC pale the electrode can bo used inal postions: on OC+ ‘moth weld appearance vith good penaaion wil be obtained Hardness approx. 180. HE NI alloys TeeerB acetate fZl RepTec AISI 5 ‘Alerrought alloys ane Sick electrode with special coating for welding af AIS-alloys, omy UTALss Welding of AlSt-aloys as such and with jos 1 other Al alloys. The clactrade is to be welded with a shart are with the elocvode perpen dicular tothe work piece. The special electrode coating feciitates the oc+ removal af oxide skins and production of porosity tee welds, Thickor ohn peted te le. pieces with heavier thickness to be preheated to 180-250°C le ws: 16 2a. 4G, 4F oF 36u, 3Fu 360, $F EN: PA Pc. PO. Pe PF PG.Welding stainless and heat resistant steel RepToc 210 Stainless steel oun LOLS lilo coated electrode for welding corrasionresistantCrNi-sieel. the Gray wT ae8) wold deposit consists of a CrN-stainess steel wih min. 28% Mo FCA oorancea 316 ‘and low carbon. The electrode fs suitable for butt welding 0! Mo- alloyed stainless steels e.g, AIS! 316L and is also suitable for clad ding of mils ane! low alloyed steel withthe use ol a bulfer layer on the a fernic steel Applicable temperature range: -120°C to +400°C. own RepTec 46 heat resistant CrNi stee! ‘ouww Ue 7 Ril coated electrode for wolaing high tomporatue resisiont GN- —aray Luv a0 steels (e 9, AISI 310). The weld depost is fully austenitic and is ox: dation resistant up to 1200°C. The elactrade should be used wth oe¥iAc stringer bead technique; prevent overheating the workpiece. IZ 7 ie Welding dissimilar metals RopTee 126 ‘non magnetic ‘own usar dissimilar steo! cry staor High recovery (160%) rule coated electrode for but welding of cis milar metals and cladding, The weld metalis 6 shin alloyed austen bi tic CrN-siee! with a service temperature up to 300°C (dissimilar I joins) also oxidation resistant up to 850°C NI: dissimilar, buttering high ferite containing weld metal ~ Futile coated stick electrade for welding dissimilar metals and clad: ding, The weld metal deposit has a high butter capacity due tothe high ferrite content. In butt welding ofiicut to weld steel, ahigh resistance to cold and hot cracking is experienced. The weld metal Bc has ahighstrength level (u's > 700 Nim) and @ relatively low linear game expansion coefficient. Alter worKhardening he hardness ofHB 220, [>* increases to HB 440, ea Reptec 7 Ni base oun Lance 7ans Stick electode wih a special basic coating, designed for welding GTAY.——_LNTCO 705, NiGralloys, 35:5 and 9% Nralloyed cryogenic stee! grades as well as joining dissimilar metals, High toughness weld metal with applicae tion in te range of -269 to +900°C. A wal directa stab a prow- des sound welding in all positons. The weldbead appearance is I smooth. The wold metal has a high resisiance to hot cracking NI RepTee 34 ‘wear resistant Ni base high temperatures Rulile coated high recovery (170%) sick electrode for welding of high Corrosion resistant surlaces, operating at high temperatures. Welding Dene of new and rebuilding of worn tools working at high temperatures, such as hot shears, not punch aes. y ‘The deposit is machinable a Bler layers to be welded with RepTec 29 RepTec 5 Nicu base ‘mw Lesnicu ram Stick electrode for welding of NiGuralloys and joints between diferent Tkwv LNT Gu TaR0| ‘materials, for example steel and NiCu-elloys, The weld deposit has @ low C-contert, allowing applications between -196°C and 425°C. e+ Typical yield stiength is SOON? — le CyHardfacing Wearshield ME(e) Metal and earth Fea Futile coated high recovery (170%) electrode lor depositing a very hard abrasion resistant surface in max. 2 layers on build-up layers, ‘welded win RepTec 126. Base materials include structural ste, stool ‘castings and high Mn wear resist steel, Applications include: me tal to earth wear on bucket teeths, scrapers, blades, paddles, ham. mers and crusher rol, “. Hardness HR 49-59 \WEARSHIELD 60(0) Basic coated high recovery (200%) elecrade, providing hardacing ‘deposits with special primary carbidas in an eutectic austenite car bide matrix. For hardlacing new or worn parts which are subject to Bewae ‘severe abyasion with moderate impact caused by sand, mineral, (re, coals or coment. Applications include crusher cols, plate and Jaws, brick and coke machinery, WEARSHIELD 70 severe abrasion at high temperatures Basic graphite coated high recovery (240%) electrode, provicing haralacing deposits with special primary carbides for highest bra sion resist slags. Remains abrasion resistant at high temperatures ‘Applicaton in installations for breaking cokes and slag at high “4 temperatures. HRC 65: ‘caused by sand, minerals, ore, coal, cement or Downe Repair welding Points of attention ‘sry to find the reason that caused the damage or the failure + determine the base material + 90! up awell-considered repair plan By drawing up a plan the following issues have tobe taken into account * removal of al detects * joint preparation + welding processes + welding consumables * preheat and intorpass temperatures + heat weatment alter welding * environmental circumstances * welding procedures * execution ‘+ mechanical post weld treatment of the welds Bulld up and hardtacing Restoring worn parts Fequenty involves the fellowing steps: 1» Burtering For a deposi that wil dite the carbon and allay content of base material and the risk of cracking 2: Build up Sericusly worn areas must be rebuilt close to working size using tough, crack resistant welding materials which can be deposited in an unlimited numiber of layers 3: Harataong ‘Wear resistant surfaces are welded on the base metal or on bulld up deposit to extend service lie, Hardacing is usually limited to one, two or three layers, ee Lincoln Smitweld BV Pb 253 - 0500 AG Nijmegen The Netherlands Tal 431 024- 3522911 Fax, +31 024 - 352 24 02 Folder nr NL, 626-0597 Material selection: Type of wear ‘The primary consideration in selocting the final haratacing layers is the type of wear to be encountered in service. These include: 2: Metal-exmeta itionwear rer steal paris roling ar siaing against eachother with litle oF ro hibrication bb Severe impact waar from severe pounding wich tends to squash, {gouge and crack the surface. Manganoso steel deposits, which ‘work harden in service, provide the qrealast impact wear resis: tance, Abrasion plus impact wear frm gritty materials accompanied by heavy pounding whic tends to chip or crack as wel as grind away the surace. d: Sovore abrasion wear from grity materials which grind or erode the surlace. Severe abrasion is oten accompanied by heavy compres: sion or moderate impact. Hard deposits are required to resist abra- sion but they may also need substantial impact resistance. Metal 10 earth abrasionwear rom earth like material accompanied bby moderate impact(pounding) Abrasion plus corrosion wear Irom gritty materials combined with corrosive media. Weld deposit is required to be abrasion resistant but also needs substantial resistance against corosion and mode: rate impact. YOUR DISTRIBUTOR