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[CN 202011360554.4] Welding wire for hammer head surfacing welding of precision forging machine and hammer head surfacing welding method of precision forging machine
[CN 202011360554.4] Welding Wire for Hammer Head Surfacing Welding of Precision Forging Machine and Hammer Head Surfacing Welding Method of Precision Forging Machine Title: Welding Wire for Hammer Head Surfacing Welding of Precision Forging Machine and Application Number of Hammer Head Surfacing Welding Method of Precision Forging Machine: CN 202011360554.4 Applicant: Shanghai Wugang Equipment Engineering Co., Ltd. Application Date: 2020-11-27 Patent Type: Invention Application This invention relates to the technical field of surfacing welding, in particular, chemical composition including the following mass fractions: carbon: ≤ 0.05%; Silicon: 0.01-0.05%; Nickel: 35%-40%; Cobalt: 12%-17%; Niobium: 2.5-5.5%; Titanium: 1.2-2.0%; Aluminum: 0.2-1.2%; Boron: ≤ 0.12%; Zirconium: 0.02-0.2%; The rest is iron. Also relates to a fine forging machine hammer head surfacing welding method, in the fine forging machine hammer head substrate working surface in turn surfacing welding to hit the bottom layer, transition layer and wear-resistant layer, wear-resistant layer of the surfacing welding wire using the fine forging machine hammer head surfacing welding wire. The welding wire is an iron-based high-temperature alloy welding wire with low thermal expansion coefficient. It has excellent crack resistance and thermal fatigue resistance for surfacing welding of hammer head wear-resistant layer of precision forging machine. At the same time, it has good high temperature strength and high temperature stability in the working temperature range of hammer head. Therefore, the high temperature thermal strength, thermal stability and crack resistance of hammer head wear-resistant layer can be improved, reduce the cost of surfacing materials.
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