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Method for determining heating time of TC17 titanium alloy blank in heat treatment furnace

A TC17, heat treatment furnace technology, applied in the field of materials, can solve the problem of heating time stopped in the experience stage, no guidance, etc., to achieve the effect of avoiding tissue coarsening

Inactive Publication Date: 2016-04-06
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current engineering application, the determination of the heating time of the TC17 titanium alloy billet in the heat treatment furnace is still in the empirical stage, and there is no guidance for the process based on the heat transfer theory in China.

Method used

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  • Method for determining heating time of TC17 titanium alloy blank in heat treatment furnace
  • Method for determining heating time of TC17 titanium alloy blank in heat treatment furnace
  • Method for determining heating time of TC17 titanium alloy blank in heat treatment furnace

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Embodiment Construction

[0024] This embodiment is a method for determining the heating time of the TC17 titanium alloy billet in the heat treatment furnace.

[0025] The concrete steps of this embodiment are:

[0026] Step 1, TC17 titanium alloy bar heating test: the size of the bar is Ф300mm×320mm. The purpose of the bar heating test is to obtain the temperature rise curves of the core and surface of the TC17 titanium alloy, which can be used as a reference for the subsequent determination of the heat transfer coefficient of the alloy. In order to measure the temperature of the core of the bar, it is necessary to drill a hole with a depth of 160mm inward from the center of the end face of the bar, and the diameter is taken as Ф10mm, such as figure 1 shown. In order to truly reflect the temperature rise process of the bar core during the heating process to the greatest extent, the influence of drilling on the temperature of the bar core during the heating test must be reduced. Based on the above c...

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Abstract

The invention discloses a method for determining the heating time of TC17 titanium alloy blank in a heat treatment furnace. The method for determining the heating time of the TC17 titanium alloy blank in the heat treatment furnace is established on the basis of a TC17 titanium alloy bar stock heating test and the heat transfer theory analysis of Deform simulation software. The method is applied for precisely controlling the [Beta] forging or [Beta] pre-processing heating time of the TC17 titanium alloy blank and avoids tissue coarsening caused by overlong-time heating while a purpose that the TC17 titanium alloy is thoroughly heated evenly is realized so as to guarantee that the final tissue meets requirements. In practical production, the heating time is used for realizing the purpose that the tissue coarsening caused by overlong-time heating is avoided while the purpose that the TC17 titanium alloy is thoroughly heated evenly is realized. Each piece of TC17 titanium alloy blank can be of any state and shape.

Description

technical field [0001] The invention relates to the field of materials, in particular to a method for determining the heating time of a heated TC17 titanium alloy billet in a heat treatment furnace. Background technique [0002] TC17 titanium alloy is widely used in aero-engine fans and compressor discs due to its excellent strength, hardenability, fatigue and fracture toughness matching. The traditional structural design criterion in the aviation industry is mainly the static strength design. With the deepening of people's understanding and the development of fracture mechanics, the concept of simple static strength design in the past has been abandoned for aircraft structures, and damage tolerance design criteria have been adopted. In 1974, the U.S. Air Force formulated the military specification MIL-A-8344 (USAF) for damage tolerance. Since then, damage tolerance design criteria have been widely used in civil and military aviation products. Fracture toughness and fatigu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/00G06T17/00
Inventor 冀胜利曾卫东石晓辉张赛飞
Owner NORTHWESTERN POLYTECHNICAL UNIV