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Deformation control method of large-size titanium alloy locking ring

A deformation control and locking ring technology, applied in the direction of manufacturing tools, furnaces, heat treatment equipment, etc., can solve the problems of complex structure and operation of deformation control devices, and failure to fundamentally solve the deformation of workpieces

Active Publication Date: 2021-09-14
湖南湘投金天科技集团有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of the deformation control device is complicated, and the pre-tightening force applied by the installation and positioning mechanism has strict requirements, and the operation is complicated. Solve the deformation of the workpiece fundamentally, ignoring the influence of the heat treatment system on the deformation of the workpiece

Method used

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  • Deformation control method of large-size titanium alloy locking ring
  • Deformation control method of large-size titanium alloy locking ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The heat treatment deformation control method of the TC4 large size locking ring with an inner diameter of 1460mm and an outer diameter of 2000mm includes the following steps:

[0026] 1. Processing of positioning platform: the outer diameter of the fan-shaped main body is 2300mm, the inner diameter is 1100mm; the outer diameter of the connecting body is 2150mm, the inner diameter is 1100mm; the surface flatness is ≤±0.1mm. The fan-shaped main body is composed of a plurality of fan-shaped units 1 with identical shapes and sizes, and the connecting body is composed of a plurality of fan-shaped units 2 with identical shapes and sizes. To form the positioning platform, the axial height of the sector unit 2 is smaller than that of the sector unit 1, and the upper and lower surfaces of all the sector units 1 are flush through the sector unit 2. The middle part of the positioning platform is hollowed out. The fan-shaped main body and connecting body are welded by automatic a...

Embodiment 2

[0033] The heat treatment deformation control method of the TC4 large size locking ring with an inner diameter of 1460mm and an outer diameter of 2000mm includes the following steps:

[0034] 1. Processing of positioning platform: the outer diameter of the fan-shaped main body is 2300mm, the inner diameter is 1100mm; the outer diameter of the connecting body is 2150mm, the inner diameter is 1100mm; the surface flatness is ≤±0.1mm. The fan-shaped main body is composed of a plurality of fan-shaped units 1 with identical shapes and sizes, and the connecting body is composed of a plurality of fan-shaped units 2 with identical shapes and sizes. To form the positioning platform, the axial height of the sector unit 2 is smaller than that of the sector unit 1, and the upper and lower surfaces of all the sector units 1 are flush through the sector unit 2. The middle part of the positioning platform is hollowed out. The fan-shaped main body and connecting body are welded by automatic a...

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Abstract

The invention provides a method for controlling the deformation of a large-scale titanium alloy locking ring. Specifically, when the locking ring is heat-treated, a positioning platform is firstly installed at the bottom of the heat treatment furnace and the straightness of the positioning platform is checked, and then the to-be The heat-treated locking ring is placed flat on the positioning platform, and finally the locking ring is heat-treated by multiple segmental heating to control the deformation of the locking ring during the heating process. The invention provides a deformation control method of a large-scale titanium alloy locking ring, which reduces the deformation of the workpiece during the heat treatment heating and cooling process by formulating a reasonable heat treatment process, and prevents warpage during the heat treatment process by positioning the platform . This method effectively controls the deformation of the workpiece during the heat treatment process, and realizes the precise control of the workpiece size.

Description

technical field [0001] The invention relates to the technical field of metal heat treatment, in particular to a method for controlling deformation of a large-scale titanium alloy locking ring. Background technique [0002] Large-scale titanium alloy locking rings are used in the locking and sealing devices of ship hatch covers, and the requirements for the forming dimensional accuracy of the locking ring are relatively high, especially the specifications are (Φ1800~2500mm) / (Φ1400~2000)×(150~300 ) mm locking ring. However, large-scale titanium alloy locking rings will generate large internal stress during the rolling process and subsequent machining process, which needs to be eliminated by annealing. However, the large-scale titanium alloy locking ring has a large diameter and a small ratio of cross-sectional area to diameter. It is prone to warping and deformation during heat treatment, which affects dimensional accuracy and makes it impossible to assemble with other workpi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/40C22F1/18
CPCC21D9/40C22F1/183
Inventor 肖芬张慧杰向午渊杨胜周彩霞周慧
Owner 湖南湘投金天科技集团有限责任公司
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