Wear-resistant multi-layer surfacing electrode without cracks and high temperature oxidation resistance

Abstract

The invention discloses a flawless high-temperature-oxidation-resistant wearproof multilayer surfacing welding electrode. The welding electrode comprises a core wire and a coating. The core wire, namely a core wire H08A, is 4.0 in diameter. The weight factor of the coating is 0.90-1.2. The coating comprises, by weight, 10-20 parts of marble, 20-40 parts of rutile, 10-15 parts of titanium dioxide powder; 2-6 parts of ferrotitanium, 12-20 parts of mid-carbon ferromanganese, 1-4 parts of ferrosilicon, 20-40 parts of chromium metal, 1-5 parts of molybdenum powder, 5-10 parts of nickel powder, 1-5 parts of ferrocolumbium, 1-3 parts of sodium carbonate, 2-8 parts of mica, 0.2-1.5 parts of rare-earth ferrosilicon and 20-25% of potassium-sodium water glass. The welding electrode is scientific and reasonable in formula, low in cost, flawless in welding surface, high in high-temperature-oxidation resistance and wear resistance and simple in operation process; by the welding electrode, common welding operators can complete welding independently, and productivity and acceptability are improved; the welding electrode has good promotion value.

Description

technical field [0001] The invention relates to a surfacing welding electrode, in particular to a wear-resistant multilayer surfacing welding electrode without cracks and high temperature oxidation resistance. Background technique [0002] As we all know, in industrial production, many equipments work under the condition of high temperature oxidation wear, the service environment is harsh, frequent maintenance is required, and the cost of labor and materials is expensive. For this reason, the surface of many equipment needs to be treated with special processes, the most common method of which is surfacing wear-resistant alloys. In the process of surfacing welding, it is required that the multi-layer welding of surfacing welding electrodes has no cracks, and has good oxidation resistance and wear resistance at high temperatures. At present, the surfacing materials suitable for this special working condition are mainly cobalt-based superalloy surfacing materials. However, co...

AI Technical Summary

Problems solved by technology

However, cobalt is a rare metal and is expensive, so it is not suitable for wide application

Moreover, the cobalt-based electrode is relatively brittle. During the welding process, the welding process can only be performed slowly and repeatedly, so that the surfacing layer is gradually and slowly cooled, so that the stress is continuously released and the cracks are eliminated. Therefore, the operator's skills are relatively high. high