Cast and formed blade guiding frame and casting forming method thereof

Abstract

The invention relates to a casting forming method of a cast and formed blade guiding frame. The cast and formed blade guiding frame is prepared from the following chemical components (in percentage by mass): 0.38-0.44 percent of C, 0.20-0.35 percent of Si, 0.60-0.90 percent of Mn, 0.030 percent of S or less, 0.030 percent of P or less, 0.90-1.20 percent of Cr, 0.15-0.30 percent of Mo, 0.05-0.08 percent of V and 0.005-0.01 percent of Ti. The invention has the advantages that (1) the production process is simplified by changing forging forming into casting forming, the raw materials are saved, and the production cost is decreased; and (2) the aims of enhancing grain thinning and improving the compactness of the materials and further improving the comprehensive mechanical performance of the materials are reached by externally enhancing external cooling, internally optimizing material components and adding microalloy elements.

Description

technical field [0001] The invention relates to a cast-molded paddle guide frame and a cast-molding method, belonging to the field of casting products and casting methods. Background technique [0002] The existing TSCPP-42CD4 material series blade guide frame product is an important part of the adjustable propeller blade, which plays the role of guidance and transmission. In terms of performance, it requires high strength and plasticity, and also requires good low temperature toughness. The specific chemical composition and mechanical performance requirements are as follows: [0003] Chemical composition (mass fraction): C: 0.38~0.44%, Si: 0.20~0.35%, Mn: 0.60~0.90%, S: ≤0.030%, P: ≤0.030%, Cr: 0.90~1.20%, Mo: 0.15 ~0.30%, V: 0.05~0.08%, Ti: 0.005~0.01%. [0004] Mechanical properties R p0.2 ≥500N / ㎜ 2 , R m :750~900 N / ㎜ 2 ,A 5 %≥16%, AKv≥35J (-20°C). [0005] Its production method: According to the chemical composition of the product material and the mechanical per...

AI Technical Summary

Problems solved by technology

Its disadvantages: the utilization rate of the blank material of the product produced by the forging process is very low, and the machining allowance of the blank is large, the processing cycle is long, and the production cost is high

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