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A method of manufacturing a copper alloy large-slope propeller for ships

A technology of copper alloy and large side inclination, which is applied in the direction of manufacturing tools, casting molding equipment, metal processing equipment, etc., can solve the problems of large machining allowance and insufficient machining allowance in the subsequent sequence, and achieve compensation for deformation and reduction The effect of process margin

Active Publication Date: 2016-10-05
CSIC NO 12 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for manufacturing marine copper alloy large side-sloping blades, which solves the problem that the subsequent machining allowance is large or the machining allowance exists in the design method of adding the blade process allowance based on experience in the prior art. Insufficient quantity

Method used

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  • A method of manufacturing a copper alloy large-slope propeller for ships
  • A method of manufacturing a copper alloy large-slope propeller for ships
  • A method of manufacturing a copper alloy large-slope propeller for ships

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Embodiment

[0045] Parts of a certain type of ship with large side-slanted propellers, cast and formed. The modeling process of the blade casting is as follows: figure 1 shown. First, use Magmasoft software to simulate the stress deformation of the blade parts (including the pouring riser) during the solidification process, and output the deformed blade part model. The model is compared with the blade part model, and the flange faces of the front and rear blades are coincident and the centerline of the flange is aligned as the benchmark. Then use the same cylindrical surface with different radii to intersect the blade part model before and after deformation, and then expand the intersecting curve to a plane tangent to the corresponding cylindrical surface to obtain the expanded curve, as shown in figure 2 shown. According to the unfolded curves before and after deformation, add the amount of anti-deformation and margin in the normal direction to get the final curve, such as image 3 ...

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Abstract

The invention discloses a method for manufacturing marine copper alloy highly-skewed paddles. The deformation of the paddles is precisely forecast, so that the backward deformation is increased in the design of a casting technology, and the deformation of the paddles is compensated, so that the aim of controlling the sizes of the paddles is realized. The necessary process allowance is only increased, so that the aim of reducing the process allowance is realized.

Description

technical field [0001] The invention belongs to the technical field of casting process design, and in particular relates to a method for manufacturing a large-slope copper alloy blade for ships. Background technique [0002] Marine copper alloy large side-slope propellers have large size (>1m), large side-slope angle, leading edge and thinner side along the length of the side, and the thickness of the center arc position is large. During the solidification process of the casting, the cooling speed of the leading edge and the trailing edge of the blade is fast, and the cooling speed of the center is slow, which easily leads to deformation of the blade. In order to ensure the processing of the blades, a large process margin is usually added to the blades in the design of the casting process to ensure the size of the blades, which often results in long production cycles for subsequent processing of the blades and waste of raw materials. [0003] In order to reduce the proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/02B22C9/22B22C9/12
CPCB22C7/00B22C9/02B22C9/22
Inventor 李高峰黄引平张威王剑钱桦
Owner CSIC NO 12 RES INST