Cast and formed blade guiding frame and casting forming method thereof

A casting molding and guide frame technology, which is applied to casting molding equipment, casting molds, and casting mold components, can solve the problems of low utilization rate of blank materials, large blank machining allowance, and long processing cycle, so as to save raw materials and simplify The effect of small production process and machining allowance

Active Publication Date: 2011-04-06
BAODING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Cast and formed blade guiding frame and casting forming method thereof
  • Cast and formed blade guiding frame and casting forming method thereof
  • Cast and formed blade guiding frame and casting forming method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: A cast-molded blade guide frame, 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%.

Embodiment 2

[0018] Example 2: A casting method for the blade guide frame, (1) by adding subsidies in the process design, the center of the hot joint deviates from the casting body; Cold iron chilling, in order to further increase heat dissipation and improve the chilling effect, the surface of the mold cavity that is in direct contact with the molten steel uses chromite sand with a chilling capacity 4 times that of ordinary silica sand, which reduces the geometric thermal section by about 15%. Adding an air outlet pipe in the end area is not only beneficial to the removal of gas in the cavity, but also helps the heat dissipation of the cavity by the part of the heat taken away by the gas discharge; (3) The composition of the material is optimized by adding V and Ti microalloying elements , increase the low temperature brittle transition temperature, improve the plasticity and toughness of the material; a. V is an excellent deoxidizer for steel. Adding V to steel can refine the structure a...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C11/00C22C38/50B22C9/00
Inventor 陈江忠钱少伦
Owner BAODING TECH CO LTD
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