Manufacturing method of large-caliber thin-wall seamless titanium alloy cylinder

A technology of seamless titanium alloy and manufacturing method, which is applied in the direction of manufacturing tools, metal processing, metal processing equipment, etc., can solve the problems of reducing process flow, reducing deformation resistance, and difficult-to-deform titanium alloy, so as to reduce process flow and reduce deformation Resistance, the effect of simplifying the manufacturing process

Inactive Publication Date: 2021-03-02
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method adopts the arc additive manufacturing method to manufacture the titanium alloy tube billet, which effectively saves the manufacturing materials, simplifies the manufacturing process, combines multi-pass strong hot spinning, reduces the deformation resistance, realizes the deformation of the difficult-to-deform titanium alloy, and improves the large-caliber The rotatability and ultimate thinning rate of the thin-walled titanium alloy cylinder reduce the process flow, and finally a large-diameter thin-walled seamless titanium alloy cylinder is obtained, which solves the traditional large-diameter thin-walled seamless titanium alloy cylinder manufacturing process The disadvantages of complexity and low efficiency

Method used

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  • Manufacturing method of large-caliber thin-wall seamless titanium alloy cylinder
  • Manufacturing method of large-caliber thin-wall seamless titanium alloy cylinder
  • Manufacturing method of large-caliber thin-wall seamless titanium alloy cylinder

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Embodiment 1

[0040] This embodiment includes the following steps:

[0041] Step 1. Additive manufacturing: adopt the arc additive manufacturing method to prepare a titanium alloy tube blank on the substrate; the specific process of the arc additive manufacturing method is: use a TC4 titanium alloy plate with a thickness of 15 mm as the substrate, and use a diameter of 1.2 mm TC4 titanium alloy wire is used as the welding wire. The welding wire is always in front of the welding direction. The wire feeding angle adjustment device adopts a spring with a wire diameter of 1mm. The wire feeding angle is 15°±2°, and the distance between the welding tungsten electrode and the welding bead is 3-5mm, the manufacturing process is carried out under the protective atmosphere of argon gas, the welding speed is 5mm / s, the wire feeding speed is 30mm / s, the welding current used in arc additive manufacturing is 100A, and the time for controlling the positioner to rotate one circle and The lifting interval o...

Embodiment 2

[0047] This embodiment includes the following steps:

[0048] Step 1. Additive manufacturing: the arc additive manufacturing method is used to prepare a titanium alloy tube blank on the substrate; the specific process of the arc additive manufacturing method is as follows: a TC4 titanium alloy plate with a thickness of 15mm is used as the substrate, and a diameter of 1.5 mm is used. mm TC4 titanium alloy wire is used as the welding wire. The welding wire is always in front of the welding direction. The wire feeding angle adjustment device adopts a spring with a wire diameter of 1mm. The wire feeding angle is 15°±2°, and the distance between the welding tungsten electrode and the welding bead is 3-5mm, the manufacturing process is carried out under the protective atmosphere of argon gas, the welding speed is 4mm / s, the wire feeding speed is 20mm / s, the welding current used in arc additive manufacturing is 120A, and the time for controlling the positioner to rotate one circle and...

Embodiment 3

[0054] This embodiment includes the following steps:

[0055] Step 1. Additive manufacturing: adopt the arc additive manufacturing method to prepare a titanium alloy tube blank on the substrate; the specific process of the arc additive manufacturing method is: use a TC4 titanium alloy plate with a thickness of 20mm as the substrate, and use a TC4 titanium alloy plate with a diameter of 1.5 mm TC4 titanium alloy wire is used as the welding wire. The welding wire is always in front of the welding direction. The wire feeding angle adjustment device adopts a spring with a wire diameter of 1mm. The wire feeding angle is 15°±2°, and the distance between the welding tungsten electrode and the welding bead is 3-5mm, the manufacturing process is carried out under the protective atmosphere of argon gas, the welding speed is 4mm / s, the wire feeding speed is 30mm / s, the welding current used in arc additive manufacturing is 140A, and the time for controlling the positioner to rotate one cir...

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Abstract

The invention discloses a manufacturing method of a large-caliber thin-wall seamless titanium alloy cylinder. The method comprises the following steps: 1, preparing a titanium alloy cylinder blank byadopting an electric arc additive manufacturing method; 2, subjecting the titanium alloy cylinder blank to air cooling after stress relief annealing; 3, machining the titanium alloy cylinder blank toobtain a titanium alloy spinning cylinder blank; 4, subjecting the titanium alloy spinning cylinder blank to multi-pass powerful hot spinning; and 5, performing thermal treatment to obtain the large-diameter thin-wall seamless titanium alloy cylinder. The titanium alloy barrel blank is manufactured by adopting the electric arc additive manufacturing method, so that manufacturing materials are effectively saved, and the manufacturing procedure is simplified. Combined with multi-pass powerful hot spinning, deformation resistance is reduced, deformation of the titanium alloy difficult to deform is achieved, the rotatability and the limit thinning rate of the large-caliber thin-wall titanium alloy cylinder are improved, the technological process is reduced, the production cost is reduced, andfinally, the large-caliber thin-wall seamless titanium alloy cylinder is obtained. Defects that a traditional large-caliber thin-wall seamless titanium alloy cylinder is complex in manufacturing process and low in efficiency are overcome.

Description

technical field [0001] The invention belongs to the technical field of preparation of titanium alloy profiles, and in particular relates to a method for manufacturing a large-diameter thin-wall seamless titanium alloy cylinder. Background technique [0002] Titanium alloy has excellent properties such as high specific strength, low elastic modulus, and good corrosion resistance. It is an important structural material and is widely used in various fields, especially in piping systems. However, due to the difficulty in the production of titanium alloy seamless tubes, complex equipment, long cycle time, low yield and high cost, the application of titanium alloy tubes has been restricted, especially for thin-walled tubes, ultra-high-strength tubes, etc. Pipes on special request. The manufacture of titanium alloy seamless pipes is mainly through drilling extrusion, skew rolling piercing, and then rolling, drawing, spinning, machining and other methods. Titanium alloy has low th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23K9/04B23K9/167B33Y10/00B33Y30/00
CPCB23P15/00B23K9/048B23K9/167B33Y30/00B33Y10/00B23K2103/14B23K2101/04
Inventor 邹磊李磊陈军贾国玉蔡建华
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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