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Forging forming method of high-toughness titanium ring

A forging forming and high toughness technology, which is applied in the driving device of forging press, metal rolling, metal processing equipment, etc., can solve the problem of uneven thermal stress and structural transformation stress, poor toughness and fatigue resistance of forgings, and cannot be put into use and other problems, to achieve the effect of improving high temperature tensile strength, improving high temperature strength, and convenient application

Inactive Publication Date: 2018-03-16
陕西海恩得工贸股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above conventional standard high and low temperature treatment system can make titanium alloy forgings obtain good comprehensive mechanical properties, but when the shape of the forging is complex, it will cause uneven thermal stress and structural transformation stress, causing warping and deformation of the forging, which cannot be put into use, and the toughness of the forging and fatigue strength are poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment provides a forging forming method of a high-toughness titanium ring, which is specifically implemented according to the following steps:

[0036] Step 1: Cut the titanium alloy into bars according to the production specifications;

[0037] Step 2: Under the condition of 35°C below the phase transition point, the titanium alloy pre-bundled ring blank is obtained after upsetting, punching, and flat height, wherein the deformation amount in step 2 is 25% of the total deformation amount;

[0038] Step 3: Under the condition of 25°C above the phase transition point, rolling the ring billet in step 2 to obtain a titanium alloy ring, and water cooling to room temperature after forging;

[0039] Step 4: Double anneal the titanium alloy ring after cooling in step 3

[0040] The double annealing is divided into two annealings. Specifically, the forging is placed in a furnace at a temperature not higher than 970°C, and the temperature is raised to 970°C with the f...

Embodiment 2

[0048] This embodiment provides a forging forming method of a high-toughness titanium ring, which is specifically implemented according to the following steps:

[0049] Step 1: Cut the titanium alloy into bars according to the production specifications;

[0050] Step 2: Under the condition of 35°C below the phase transition point, the titanium alloy pre-bundled ring blank is obtained after upsetting, punching, and flat height, wherein the deformation amount in step 2 is 45% of the total deformation amount;

[0051] Step 3: Under the condition of 25°C above the phase transition point, rolling the ring billet in step 2 to obtain a titanium alloy ring, and water cooling to room temperature after forging;

[0052] Step 4: Double anneal the titanium alloy ring after cooling in step 3

[0053] The double annealing is divided into two annealings. Specifically, the forging is placed in a furnace at a temperature not higher than 970°C, and the temperature is raised to 970°C with the f...

Embodiment 3

[0061] This embodiment provides a forging forming method of a high-toughness titanium ring, which is specifically implemented according to the following steps:

[0062] Step 1: Cut the titanium alloy into bars according to the production specifications;

[0063] Step 2: Under the condition of 35°C below the phase transition point, the titanium alloy pre-bundled ring blank is obtained after upsetting, punching, and flat height, wherein the deformation amount in step 2 is 30% of the total deformation amount;

[0064] Step 3: Under the condition of 25°C above the phase transition point, rolling the ring billet in step 2 to obtain a titanium alloy ring, and water cooling to room temperature after forging;

[0065] Step 4: Double anneal the titanium alloy ring after cooling in step 3

[0066] The double annealing is divided into two annealings. Specifically, the forging is placed in a furnace at a temperature not higher than 970°C, and the temperature is raised to 970°C with the f...

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Abstract

The invention discloses a forging forming method of a high-toughness titanium ring. The forging forming method of the high-toughness titanium ring is carried out according to the following steps that1, a titanium alloy is blanked into a bar; 2, a titanium alloy pre-rolling ring blank is obtained; 3, the ring blank is subjected to rolling forming; 4, double annealing is conducted; 5, coarse grainsof the ring blank are broken; 6, the coarse broken grains are refined and uniformized; 7, the grains at a beta area of a forging structure are refined; 8, constant-temperature correction is conducted; and 9, low-temperature heat treatment is conducted, and air cooling is conducted to the indoor temperature. The forging forming method is simple, clear and convenient to apply; the content of the alpha stable is increased appropriately, and the content of the beta stable element is decreased appropriately, so that the number of alpha strips in the titanium alloy is increased; and therefore, after subsequent forging, a mesh basket structure with the high confusion degree can be obtained for improving the high-temperature strength of a forging, and meanwhile, the high-temperature tensile strength of the forging is improved.

Description

technical field [0001] The invention belongs to the technical field of metal heat treatment, and relates to a forging forming method of a high-toughness titanium ring. Background technique [0002] In order to obtain the required mechanical properties, appropriate post-forging heat treatment will be performed on titanium alloy forgings. The commonly used heat treatment methods are various annealing and quenching aging. Annealing generally includes single annealing and double annealing. Quenching aging is suitable for alloying with a higher degree. High-strength titanium alloys and near-β titanium alloys. The above conventional standard high and low temperature treatment system can make titanium alloy forgings obtain good comprehensive mechanical properties, but when the shape of the forging is complex, it will cause uneven thermal stress and structural transformation stress, causing warping and deformation of the forging, which cannot be put into use, and the toughness of th...

Claims

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Application Information

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IPC IPC(8): B21J5/00B21J9/20B21H1/06C22F1/18
CPCB21J5/002B21H1/06B21J9/20C22F1/183
Inventor 孙敏孙子城
Owner 陕西海恩得工贸股份有限公司
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