BASIC FLUX COATED LOW HYDROGEN ELECTRODE DEPOSITING 14Mn–4Ni WELD METAL FOR SURFACING WHEN IMPACT ABRASION IS INVOLVED
MNi-200
PRODUCT DESCRIPTION
The design of the electrode is synthetic, i.e. : a mild steel core wire with the alloying elements contained in the flux. The weld deposit is austenitic and metal recovery is some 135% with respect to weight of the core wire. A blend of silicates is used to bind the flux that ensures both coating strength and resistance to moisture absorption.
WELDING FEATURES OF THE ELECTRODE
The electrode is stable on both AC and DC. Initial arc strike is easy, as is restriking. The weld seams are smooth, bright and convex in shape. Slag is
readily detachable. To prevent micro solidification cracking, interpass temperature should be kept to a minimum and this may be achieved by interpass cooling.
APPLICATIONS AND MATERIALS TO BE WELDED
The electrode may be used to weld Hadfield 13/14% manganese steel or similar, or surfacing mild steel components. As deposited the weld is soft and ductile but under impact loading, it rapidly work hardens and thus resistant to wear by friction and abrasion. Recommended for rail tracks, crossing parts, crusher rolls, bucket teeth and similar. Similar properties and application to HMN but slightly better toughness
OTHER DATA
Electrodes that have become damp should be re-dried at 150ºC for 1 hour.
