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A method for preparing a thin-walled cylindrical part with a curved surface of revolution

A technology of curved surfaces of revolution and thin-walled cylinders, which is applied in the field of material processing, can solve the problems of cold bending forming that is difficult to meet design requirements, strict equipment and process requirements, and difficult machining and clamping, so as to achieve easy clamping, short production cycle, low cost effect

Active Publication Date: 2017-10-27
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is: for titanium alloy thin plate cylindrical parts, machining and clamping is difficult, it is difficult to ensure the processing quality, and the utilization rate of raw materials is low, the processing cycle is long, and the cost is high, and cold bending forming is difficult to meet the design requirements. Stamping , Thermal bulging processing has strict requirements on equipment and technology, and the problem of high cost. Provide a method for preparing thin-walled cylindrical parts with a curved surface of revolution

Method used

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  • A method for preparing a thin-walled cylindrical part with a curved surface of revolution

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Preparation of shaping mold

[0037] The shaping mold includes a female mold matched with the inner surface of the thin-walled cylindrical part with a curved surface of revolution, and a male mold matched with the outer surface of the thin-walled cylindrical part with a curved surface of revolution, and the female mold and the male mold are prepared respectively. In this embodiment, the male mold includes two modules, and the modules are connected through a flange to form a female mold. Wherein, the shaping mold adopts 45# steel.

[0038] (2) Raw material cutting

[0039] Cut the titanium alloy sheet according to the product surface expansion diagram to obtain the initial embryo. In this embodiment, the raw material is TC4 alloy with a thickness of 0.5mm.

[0040] (3) Assembly and heat treatment

[0041] Tightly install the embryonic plate cut out in step 2 into the cavity of the fish shaping mold, and the assembly structure is as follows: figure 1 As shown, th...

Embodiment 2

[0045] (1) Preparation of shaping mold

[0046] The shaping mold includes a female mold matched with the inner surface of the thin-walled cylindrical part with a curved surface of revolution, and a male mold matched with the outer surface of the thin-walled cylindrical part with a curved surface of revolution, and the female mold and the male mold are prepared respectively. In this embodiment, the male mold includes two modules, and the modules are connected through a flange to form a female mold. Among them, the setting mold adopts 304 stainless steel.

[0047] (2) Raw material cutting

[0048] Cut the titanium alloy sheet according to the product surface expansion diagram to obtain the initial embryo. In this embodiment, the raw material is TA1 titanium alloy with a thickness of 1.0 mm.

[0049] (3) Assembly and heat treatment

[0050] The first blank plate cut out in step 2 is tightly fixed in the cavity of the fish-shaped mold to obtain the first workpiece. Place the ...

Embodiment 3

[0053] (1) Preparation of shaping mold

[0054] The shaping mold includes a female mold matched with the inner surface of the thin-walled cylindrical part with a curved surface of revolution, and a male mold matched with the outer surface of the thin-walled cylindrical part with a curved surface of revolution, and the female mold and the male mold are prepared respectively. Among them, the setting mold is made of 316L stainless steel.

[0055] (2) Raw material cutting

[0056] Cut the titanium alloy sheet according to the product surface expansion diagram to obtain the initial embryo. In this embodiment, the raw material is TC21 alloy with a thickness of 0.3 mm.

[0057] (3) Assembly and heat treatment

[0058] The first blank plate cut out in step 2 is tightly fixed in the cavity of the fish-shaped mold to obtain the first workpiece.

[0059] Place the assembled and shaped first workpiece in a vacuum heat treatment furnace for heat treatment. The heat treatment temperatur...

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Abstract

The invention discloses a preparation method of a thin-walled tubular part with a revolution curved surface and aims at solving the problems that when a titanium alloy sheet tubular part is machined, machining and clamping are difficult to realize and the processing quality is difficult to guarantee; raw materials are low in utilization rate, long in processing period and high in cost; cold bending and forming difficultly meets the design requirement; and stamping and hot-bugling processing is rigorous in requirements on equipment and process, and is higher in cost. The invention provides a simple preparation method of the thin-walled tubular part with the revolution curved surface, in particular to a simple preparation method of a titanium alloy thin-walled tubular part with the revolution curved surface. According to the simple preparation method, the preparation demand of the titanium alloy thin-walled tubular part can be met. The method comprises the steps of preparing a fixed mold, cutting raw materials, as well as performing assembling and thermal treatment. The preparation method disclosed by the invention has the advantages of simplicity in operation, convenience in use, no need of expensive equipment, high utilization rate of the raw materials, short period, low production cost, high precision of products and better application prospect.

Description

technical field [0001] The invention relates to the field of material processing, in particular to the field of preparation of ultra-thin-walled cylindrical parts, in particular to a method for preparing thin-walled cylindrical parts with a curved surface of revolution. Background technique [0002] Due to its high specific strength, high activity, corrosion resistance, high temperature resistance, and good fatigue and creep resistance, titanium alloys are increasingly used in defense products. According to statistics, among the parts of national defense products, structural parts made of titanium alloy materials account for 90% of the total number of parts. [0003] As a common structural form, cylindrical parts are often prepared by bending titanium alloy sheets in defense products. At present, there are many methods for forming titanium alloy thin plate cylindrical parts, mainly including machining, cold forming, stamping, thermal expansion and so on. However, for the u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D5/00B21D37/10C21D9/08C21D1/773C22F1/18C22F1/02
CPCB21D5/00B21D37/10C21D1/773C21D9/08C22F1/02C22F1/183
Inventor 李强何林刘廷懿李启寿蔡永军杨华刘炳刚
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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