Intrinsically wear-resistant titanium alloy and preparation method thereof

A titanium alloy, an essential technology, applied in the field of titanium alloy parts processing, can solve the problems of long-term tests and engineering practice tests, titanium alloys are easy to stick to knives, titanium alloys are easy to embrittle, etc., to achieve improved purity, good machining performance, Good heat processing performance

Inactive Publication Date: 2018-04-03
宁波俐辰新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, what mainly restricts the processing performance of titanium alloys is that titanium alloys are very easy to stick to the knife, and the contradiction is that the phenomenon of knife vibration will also occur at the same time (generally, the sticking of the knife is due to the material matrix being too soft, while the vibration of the knife is Due to the material matrix is ​​too hard), this is mainly due to the fact that titanium alloys are prone to embrittlement when heated, and are prone to adhesion reactions with tools containing chromium (almost all conventional tools contain chromium)
There are many ways to improve this situation in the existing patented technologies, including a patented technology for re-proportioning chemical components, and two patented technologies for changing mechanical processing methods, but these two types of methods are difficult to popularize and use. The former is Since a new material from the beginning of smelting has to go through a long test and engineering practice test from new research to application, the latter requires tailoring each titanium alloy part

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An essential wear-resistant titanium alloy, which is characterized in that: the titanium alloy uses TC17 as the original body, is smelted and sintered under the protection of argon after vacuum evaporation-solidification treatment, and then undergoes hot isostatic pressing after rapid cooling. finally get.

[0025] The manufacturing method of the above-mentioned essential wear-resistant titanium alloy comprises the following steps:

[0026] 1) Preparation before production

[0027] ① Raw material preparation: prepare 100Kg of TC17 alloy ingot by weight;

[0028] ②Preparation of modified materials: prepare a sufficient amount of high-purity argon gas and a sufficient amount of ceramic pellets for shot blasting;

[0029] ③ Tooling and equipment preparation: alumina ceramic crucible, vacuum bottom heating and melting furnace equipped with electromagnetic stirring device and circulating water cooling device, alumina that matches the circulating water cooling device on the...

Embodiment 2

[0041] The whole is consistent with Example 1, the difference is:

[0042] The manufacturing method of the above-mentioned essential wear-resistant titanium alloy comprises the following steps:

[0043] 3) Modification

[0044] ③Vacuumize to 1×10 -2 Pa, then heat the alumina ceramic crucible to 1820°C by bottom heating, turn on electromagnetic stirring after reaching the temperature, stop the operation of the mechanical pump for vacuuming, maintain the operation of the Roots pump, and control the vacuum degree at 1×10 -1 Pa-5×10 -1 Pa;

[0045]④ Turn on the circulating water cooling device 3 minutes after reaching the temperature, and the rising alloy steam is collected in the alumina ceramic collection dish, and accumulates in the form of solid particles. After the steam completely disappears, all equipment is turned off, and then the high-purity Argon, when the furnace temperature is cooled to room temperature, open the furnace and take out the alumina ceramic crucible, ...

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PUM

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Abstract

The invention discloses an intrinsically wear-resistant titanium alloy and a preparation method thereof. The titanium alloy is prepared by the following steps: with TC17 as an original intrinsic body,performing vacuum evaporation-solidification treatment, and smelting and sintering under argon protection; after that, quickly cooling, and performing hot isostatic pressing treatment to finally obtain the titanium alloy. The intrinsically wear-resistant titanium alloy disclosed by the invention has the advantages of high wear resistance, good machining property, strong impact resistance, simultaneous action with any surface strengthening technology, and wide application range.

Description

technical field [0001] The invention relates to the field of processing titanium alloy parts, in particular to an intrinsically wear-resistant titanium alloy and a manufacturing method thereof. Background technique [0002] Titanium is an important structural metal developed in the 1950s. Titanium alloys have high strength, good corrosion resistance, and high heat resistance. [0003] However, titanium has high chemical activity, is easily polluted by gas and crucible materials, has poor process performance, and is difficult to cut. In thermal processing, it is very easy to absorb impurities such as hydrogen, oxygen, nitrogen, carbon, etc., and has poor wear resistance, and the production process is complicated. In the prior art, surface modification is mainly used to increase the wear resistance of titanium alloys, but currently there is no effective way to improve the essential wear resistance and cutting performance of titanium alloys. In the prior art, what mainly restr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C14/00C22F1/18
CPCC22C1/03C22C14/00C22F1/183
Inventor 孙惠丽黄佳钰
Owner 宁波俐辰新能源有限公司
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