Wolfram carbine abrasion-proof core deposit welding rod

Abstract

A tungsten carbide wear resistant drug core resurfacing welding rod comprises a drug core and a steel sheet for wrapping the drug core. A drug fur powder material is coated outside the steel sheet. The weights of the drug core, the steel sheet and the drug fur powder material separately in the total weight of the welding rod is that is the drug core is ranged from 32 percent to 36 percent, the steel sheet is ranged from 32 percent to 36 percent, the drug fur powder material is ranged from 30 percent to 34 percent, the drug core tungsten carbide is ranged from 96 percent to 98 percent and nickel is ranged from 2 percent to 4 percent. The weight of drug fur is distributed according to percent that marble is ranged from 33 percent to 35 percent, fluorite is ranged from 35 percent to 38 percent, tungsten carbide is ranged from 10 percent to 14 percent, high carbon ferromanganese is ranged from 2 percent to 6 percent, titanium iron is ranged from 8 percent to12 percent, rare earths silicon is ranged from 1 percent to 3 percent and calcined soda is ranged from 1 percent to 3 percent. The resistant alloy is equably bridged to the resurfacing welding metal through welding core. The invention has the advantages that the welding technics performance is good and the welding line ingredient is even. The connecting strength is high, thereby, avoiding gas hole and flaw and with good detachability. The invention has a higher hardness and wear resistant performance. The making technics is simple and the producing cost is lower. The welding rod structure is novel and the welding shape is good to suit in full position resurfacing welding of wearing parts in the engineering machinery in metallurgy and mine.

Description

Technical field [0001] The invention relates to an electrode for metal welding, in particular to a tungsten carbide wear-resistant flux-cored surfacing electrode suitable for surface strengthening of mechanical parts. Background technique [0002] At present, surfacing welding is widely used in construction machinery such as metallurgy, mining, and water conservancy dredging to treat the surface of its vulnerable parts. For example, most of the key vulnerable parts of domestic dredgers are basically made of ordinary steel castings such as 35SiMn steel, which generally have problems such as severe wear, short service life, frequent maintenance, low maintenance technology level and low resource utilization rate. The bottleneck that hinders the technological progress of dredging equipment. Chinese Patent Publication No.: CN 1562550A, publication date; January 12, 2005, title of invention: "A Wear-Resistant Tubular Tungsten Carbide Welding Rod", which includes welded pipe and f...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a tungsten carbide with uniform weld structure, high hardness and good wear resistance in view of defects such as insufficiently uniform weld seam composition of existing surfacing welding electrodes, easy to produce pores or cracks, and easy peeling of surfacing welding metal. Wear Resistant Flux Core Surfacing Electrode