Hydrogenation reactor barrel electric-smelting forming method

Abstract

The invention provides a hydrogenation reactor barrel electric-smelting forming method, which comprises the steps of adopting a high-energy heat source compounded by electric arc heat, resistance heat and electroslag heat for melting a continuously conveyed metal raw material wire, and solidifying, stacking and forming layer by layer on a base material to manufacture a metal component; and adopting a computer for controlling the relative motion of an electric smelting head and the base material, quickly cooling a molten bath and solidifying and stacking layer by layer on the base material, and finally forming a hydrogenation reactor barrel. The hydrogenation reactor barrel electric-smelting forming method provided by the invention has the advantages of high efficiency, low cost, favorable mechanical property and the like.

Description

technical field [0001] The invention relates to an electric melting forming method for a cylinder body of a hydrogenation reactor. Background technique [0002] The hydrogenation reactor is the core equipment of various hydrogenation processes or hydrogenation units. The working conditions are harsh, the technology is difficult, the manufacturing technology is high, and the cost is expensive. Especially because of the particularity of the operating conditions of the hydrogenation unit, the reactor is exposed to high-temperature hydrogen corrosion, hydrogen embrittlement, temper brittle damage of chromium-molybdenum steel, and even Under the influence of multiple damage factors such as polysulfuric acid stress corrosion cracking and hydrogen-induced peeling of the surfacing layer of austenitic stainless steel, it is easy to be damaged and even scrapped. Preventing these destructive damages not only requires correct design, but also has a lot to do with material selection and...

AI Technical Summary

Problems solved by technology

[0004] Although this method is widely used in industrial production, due to the complex process and the difficulty in controlling the chemical and mechanical properties, it also results in poor quality stability, uneven heat treatment phase structure, high scrap rate, and low utilization rate of forged structural materials. When the wall thickness is thinner, its manufacturing cost is relatively high

From the final grain measurement results, it is generally only about 4-6 grades. In addition, the hydrogenation reactor is limited by the limitations of steel ingot smelting and forging technology, and the method of segmented material forging and tailor welding is adopted. Also because the increase of welds severely splits the continuous direction of mechanical fibers, which greatly affects the mechanical properties of materials and the safety of container equipment.

And it is also very easy to cause the delay of the manufacturing period and increase the cost.

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