Method for processing titanium alloy screw nut of high-end intelligent mobile phone

A smart phone and processing method technology, applied in the field of nut processing, can solve the problems of difficult processing and production, low production pass rate of high-end smart phone titanium alloy nuts, etc., achieve high production pass rate, solve processing production difficulties, and ensure quality.

Inactive Publication Date: 2014-12-10
贵州顶效经济开发区沈兴实业有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the above technical problems, the object of the present invention is to provide a processing method for high-end smart phone ...

Method used

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  • Method for processing titanium alloy screw nut of high-end intelligent mobile phone
  • Method for processing titanium alloy screw nut of high-end intelligent mobile phone
  • Method for processing titanium alloy screw nut of high-end intelligent mobile phone

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Embodiment 1

[0031] Embodiment 1. The present invention is a processing method of a titanium alloy nut for a high-end smartphone, comprising the following steps:

[0032] 1) Vacuum smelting: The TC4ELI titanium alloy is controlled by the cloth, the pressure electrode and the smelting process, and smelted three times in a vacuum consumable electric arc furnace. Pickup light, deep cracks are cleaned up by manual grinding, to ensure that these defects are not wrapped in the material or increase the area of ​​defects in the next process to reduce the yield;

[0033] Among them, the composition content of TC4ELI titanium alloy is calculated by mass fraction as follows: iron (Fe) ≤ 0.30%, carbon (C) ≤ 0.10%, nitrogen (N) ≤ 0.05%, hydrogen (H) ≤ 0.015%, oxygen (O) ≤0.20%, aluminum (Al)≤5.5~6.8%, vanadium (V)≤3.5~4.5%, the rest is titanium (Ti);

[0034] 2) Forging: The TC4ELI titanium alloy ingot after 3 times of vacuum smelting is forged at 1100±10℃ to cut off the cap and ingot tail, and forged...

Embodiment 2

[0046] Embodiment 2, the present invention is a processing method of a titanium alloy nut for a high-end smartphone, comprising the following steps:

[0047] 1) Vacuum smelting: The TC4ELI titanium alloy is controlled by the cloth, the pressure electrode and the smelting process, and smelted three times in a vacuum consumable electric arc furnace. Pickup light, deep cracks are cleaned up by manual grinding, to ensure that these defects are not wrapped in the material or increase the area of ​​defects in the next process to reduce the yield;

[0048] In order to ensure the uniformity of the alloy composition, the content of each impurity element, especially O, N, H and Fe, etc., should be precisely controlled. Among them, the composition content of the TC4ELI titanium alloy is calculated as: 0.15≤iron (Fe)≤0.25% by mass fraction, Carbon (C)≤0.10%, Nitrogen (N)≤0.003%, Hydrogen (H)≤0.005%, Oxygen (O)≤0.02%, Aluminum (Al)≤5.5~6.8%, Vanadium (V)≤3.5~4.5 %, the rest is titanium (T...

Embodiment 3

[0061] Embodiment 3. The present invention is a processing method of a titanium alloy nut for a high-end smartphone, comprising the following steps:

[0062] 1) Vacuum smelting: The TC4ELI titanium alloy is controlled by the cloth, the pressure electrode and the smelting process, and smelted three times in a vacuum consumable electric arc furnace. Pickup light, deep cracks are cleaned up by manual grinding, to ensure that these defects are not wrapped in the material or increase the area of ​​defects in the next process to reduce the yield;

[0063] In order to facilitate the smooth progress of the nut processing process, the content of each impurity element, especially Fe, should be accurately controlled. Among them, the composition content of TC4ELI titanium alloy is calculated by mass fraction: 0.10%≤iron (Fe)≤0.20%, carbon (C)≤ 0.10%, nitrogen (N)≤0.003%, hydrogen (H)≤0.005%, oxygen (O)≤0.02%, aluminum (Al)≤5.5~6.8%, vanadium (V)≤3.5~4.5%, the rest is titanium (Ti);

[0...

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Abstract

The invention relates to a method for processing a titanium alloy screw nut of a high-end intelligent mobile phone, belonging to the technical field of screw nut processing. The method comprises the following steps: smelting in vacuum, forging, milling, rolling, stretching and circling, performing mechanical surface treatment, stretching, annealing, broaching, straightening, polishing, forming pattern, milling and tapping. According to the method, the content of interstitial elements C, O and N and impurity element Fe is strictly controlled, the toughness of the screw nut is remarkably improved, and the screw nut which is produced by using the method is relatively good in plasticity and toughness and good in welding property and low-temperature use property; with the cooperative production of mechanical processing and manual processing, the quality of a product is ensured, the production efficiency of the product is improved, and the method has the characteristics of high production pass percent, high production efficiency and the like, and solves the problems of processing and production difficulty, and the like.

Description

technical field [0001] The invention relates to a processing method of a titanium alloy nut for a high-end smart phone, and belongs to the technical field of nut processing. Background technique [0002] Mobile phone nuts are classified into two types: mobile phone copper nuts and mobile phone stainless steel nuts. Mobile phone copper nuts generally use C3604 brass, HPB59 series brass, and mobile phone stainless steel nuts generally use SUS303 or SUS304 stainless steel. TC4ELI titanium alloy material has a series of advantages such as low density, high strength, excellent corrosion resistance, toughness and weldability, and has been widely used in aerospace, petrochemical, shipbuilding, automobile, medicine, electronics and other sectors. [0003] The titanium alloy mobile phone nut has just been developed in recent years. It has the advantages of corrosion resistance, non-magnetic and high strength; it has been used by iPhone5 and iPhone5S mobile phones, and its use effect ...

Claims

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Application Information

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IPC IPC(8): C22C14/00B23P15/00
Inventor 陈文
Owner 贵州顶效经济开发区沈兴实业有限责任公司
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