Ring Forging Forming Method of Rene41 Alloy

Abstract

In the method for forming a ring forging of Rene41 alloy of the present invention, the first blanket is wrapped around the cylindrical surface of the blank of Rene41 alloy, and then they are heated to 1040-1140°C and then the heating is stopped, and the above-mentioned blank is immediately thickened and punched; Wrap the outer surface of the processed billet and the inner surface of the punched hole with the second blanket, and then heat them to 1040-1120°C and stop heating, and immediately carry out the horse-frame reaming treatment on the above-mentioned billet; wrap the second blanket respectively The outer surface of the treated billet and the inner surface of the reamed hole are heated to 1040‑1120 ° C and then the heating is stopped, and the above billet is rolled into the final product immediately. After being treated by this method, the grain size of the ring forging reaches to Grade 6 or finer, and there are no common cracks on the surface.

Description

technical field [0001] The invention relates to a method for forming a ring forging of a superalloy, in particular to a method for forming a ring forging of a Rene41 alloy. Background technique [0002] Rene 41 is a precipitation-hardening nickel-based deformed superalloy. It has high tensile and durable creep strength and good oxidation resistance in the range of 650-900 ° C. It is suitable for manufacturing and requires high strength and 980 °C below 870 ° C. High-temperature components of aviation and aerospace engines that require oxidation resistance below ℃. Due to the high content of aluminum and titanium in the alloy, the plasticity of the alloy is poor, and it is easy to crack during the forging process, and the crack is easy to expand. In the forging process, the product is often scrapped due to surface cracks, or more forging allowances (increased material input) are added to ensure the removal of surface cracks. [0003] Rene41 alloy is a coarse-grained alloy, ...

AI Technical Summary

Problems solved by technology

[0005] 1. Rene41 alloy is easy to crack during the forging process, and more machining allowance is needed to ensure the removal of surface cracks, which may lead to product scrapping in severe cases;

[0006] 2. In order to ensure the surface quality of the product, a relatively high ring rolling temperature is required, resulting in the grain size of the product being easily unqualified after forming;

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