Nikko Steel Kawat Las Elektroda For Hardfacing and Resurfacing - Build up SMC-390

Brosur & Katalog Produk / Brosur & Katalog Produk

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1. MANUFACTURERS OF A DIVERSE RANGE OF ADVANCED WELDING CONSUMABLES SECTION 9 SMC-390 LOW HYDROGEN-HARD FACING ELECTRODE DEPOSITS C-Cr-Mo CONTAINS WELD METAL WITH A UNIQUE COMBINATION OF ABRASION AND HEAT RESISTING PROPERTIES DATA SHEET NO. 130 SPECIFICATION CLASSIFICATION - PRODUCT DESCRIPTION The design emphasis of the chemically basic flux is engineered to ensure that the weld metal hardness levels demanded by the specification are fully met without detracting from the toughness levels associated with this class of alloy. The basic flux containing the appropriate alloying elements and a balanced addition of iron powder is extruded onto a high purity ferritic core wire using a balance of silicates that ensures both coating strength and resistance to moisture absorption. WELDING FEATURES OF THE ELECTRODE The electrode is suitable for both AC and DC and may be used in all positions except vertical down. Arc stability is good as is slag detachability. Weld seams are smooth, evenly rippled and slightly convex in shape. The metal recovery of the electrode is some 120% with respect to weight of the core wire. The higher than normal silicon promotes weld metal fluidity allowing precise build up of edges. APPLICATIONS AND MATERIALS TO BE WELDED On high carbon steels HV-250B should be used as a buffer layer. The weld deposit has good resistance to abrasion, under normal circumstances is crack free, and will withstand a reasonable amount of impact loading. Used to particular advantage for : Buldozer blades, crusher jaws, bucket lips and teeth involved in earth moving and mineral crushing. Where the main wear is abrasion, but with some impact resulting from rocks and compacted minerals. Under normal circumstances the weld metal is non-machinable. The high Cr and Si levels increase resistance to oxidation at elevated temperatures giving advantages over conventional martensitic types. WELD METAL ANALYSIS COMPOSITION % BY Wt. C Mn Si S P Cr Mo Fe MIN - - - - - 4.0 0.65 MAX 1.2 2.5 2.0 0.03 0.035 10 1.65 TYPICAL 0.8 1.5 1.5 0.015 0.02 7.0 0.8 Bal. WELD METAL HARDNESS (ALL WELD METAL) HRC HV AS WELDED 150 0 C PRE-HEAT 28 ~ 38 290 ~ 370 CONTINUOUS WELDING 26 ~ 34 270 ~ 340 Hardness varies dependent upon base metal composition, dilution, and cooling rate. WELDING AMPERAGE AC or DC+ Ø (mm) 2.6 3.2 4.0 5.0 MIN 60 80 120 170 MAX 90 140 190 220 OTHER DATA Electrodes that have become damp should be re-dried at 150 o C for 1 hour. RELATED PRODUCTS Please contact our Technical Department for detail. WI-0304 DS130 SMC-390, Rev. 2, Date 01.12.2010


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