Purpose. To protect thin bimetallic sheets of these parts from various types of abrasive and gas-abrasive wear. The composition of the flux-cored wire charge has been developed.
Specifications. Optimal ranges of surfacing modes with flux-cored wire, ensuring the production of high-quality deposited metal with minimal penetration γ0 of the base metal: – submerged with flux-cored wire Ø 1.8 mm: Un = 28…30 V; In = 220…300 A; γ0 = 38…46%; – in protective gases with cored wire Ø 1.8 mm: Un = 25…27 V; In = 250…320 A; γ0 = 42…44%; – open arc flux-cored wire Ø 1.8 mm: Un = 22…24 V; In = 200…250 A; γ0 = 34…40%.
Scope of application. Mining and metallurgical complex, mechanical engineering, other industries.
Advantages. Compared to existing technologies, the main advantage is high productivity, the use of single-layer surfacing instead of multi-layer.
Technical and economic effect. Replacing multi-layer wear-resistant arc surfacing with single-layer surfacing will significantly reduce the cost of expensive surfacing materials and at least double labor productivity. Savings when using the proposed technology will be 80…120 UAH/kg of deposited metal, depending on the chemical composition and price of the flux-cored wires used.
Description. An industrial technology and technique for one- or two-layer wear-resistant arc surfacing with self-shielding flux-cored wire Ø 1.6-1.8 mm has been developed, which ensures the production of high-quality deposited metal with minimal penetration of the base metal. Technologies and materials of arc surfacing with control of penetration and formation of deposited layers have made it possible to increase productivity and reduce the energy intensity of arc surfacing of thin steel sheets. A pilot industrial test confirmed the prospects for using the developed surfacing technologies and materials in industry. Technological instructions for arc surfacing with self-shielding flux-cored wire of selected parts have been developed.