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Pure titanium or titanium alloy and surface hardening method thereof

A technology of titanium alloy and pure titanium, which is applied in the direction of metal material coating process, coating, solid diffusion coating, etc., can solve the problems of difficult control of hardened layer structure, rough surface hardened layer of pure titanium or titanium alloy, etc., and achieve improvement Hardening effect, good appearance, anti-oxidative discoloration effect

Inactive Publication Date: 2017-05-10
中山源谥真空科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a pure titanium or titanium alloy and a surface hardening method thereof, which are used to solve the problems in the prior art that the surface hardening layer of pure titanium or titanium alloy is rough and the structure of the hardening layer is difficult to control

Method used

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  • Pure titanium or titanium alloy and surface hardening method thereof
  • Pure titanium or titanium alloy and surface hardening method thereof
  • Pure titanium or titanium alloy and surface hardening method thereof

Examples

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Embodiment 1

[0032] like figure 1 As shown, a kind of pure titanium or titanium alloy provided in this embodiment includes a substrate 1 made of pure titanium or titanium alloy, and is characterized in that: the surface of the gold substrate 1 is provided with three oxidation hardened layers, and the The three-layer oxidation hardening layer is respectively the surface transparent oxide layer 2, the outer diffusion layer 3 and the inner diffusion layer 4 from the outside to the inside.

[0033] The three-layer oxidation hardened layer on the surface of pure titanium or titanium alloy can well protect the base material 1 and make it have high hardness and high gloss.

[0034] Among the above-mentioned three layers of oxidation hardening layer, the thickness of the surface transparent oxide layer 2 is the thinnest, so that it will not cause discoloration due to light interference; the oxygen concentration in the outer diffusion layer 3 is the highest, and the thickness of the outer diffusion...

Embodiment 2

[0039] like image 3 As shown, a pure titanium or titanium alloy surface hardening method provided in this embodiment is characterized in that, comprising:

[0040] Step 1. Vacuuming: put the cleaned substrate into the furnace, and vacuum the furnace. The substrate is made of pure titanium or titanium alloy;

[0041] Step 2. Heating: heating the substrate to a preset temperature in a vacuum state, and feeding argon gas into the furnace during the heating process;

[0042] Step 3. Hardening: After heating to the preset temperature, hold the temperature for a certain period of time, and at the same time pass a mixed gas of argon, hydrogen, and oxygen into the furnace;

[0043]Step 4. Hydrogen removal: close the supply of the mixed gas and keep the temperature for a certain period of time, and at the same time pass argon gas into the furnace to remove the hydrogen gas infiltrated into the substrate;

[0044] Step 5, cooling down: when the temperature in the furnace is lower tha...

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Abstract

The invention provides pure titanium or a titanium alloy and a surface hardening method thereof. The pure titanium or the titanium alloy comprises a base material made of the pure titanium or the titanium alloy; three layers of oxidized hardened layers are arranged on the surface of the base material; the three layers of oxidized hardened layers comprise a surface transparent oxidized layer, an outer dispersion layer and an inner dispersion layer from outside to inside respectively; the surface hardening method of the pure titanium or the titanium alloy comprises five steps of vacuumizing, heating, hardening, dehydrogenating and cooling. The surface of the pure titanium or the titanium alloy subjected to hardening treatment has uniform, white and bright color and luster and has no color change condition; in the surface hardening method of the pure titanium or the titanium alloy, vacuum oxygen permeation hardening is adopted, and hydrogen gas is introduced in an oxygen permeation hardening process simultaneously, so that the hardening effect is improved; the hardening method is easy to control and a good appearance can be obtained.

Description

technical field [0001] The invention relates to a pure titanium or titanium alloy and a surface hardening method thereof. Background technique [0002] Existing pure titanium and titanium alloys are mostly used in the manufacture of advanced watch parts, jewelry, spectacle frames and other decorative products. In order to make the surface of pure titanium or titanium alloy have higher hardness and gloss, the surface of pure titanium or titanium alloy is often hardened. The existing surface hardening methods of pure titanium or titanium alloys are as follows: 1. Atmospheric thermal oxidation treatment: directly heat the pure titanium or titanium alloy parts to 750°C to 1000°C in the atmosphere to make the surface of pure titanium or titanium alloy form A layer of rutile crystalline titanium dioxide (rutile), the surface hardness can reach Hv1100, but the oxide layer produced by this method is gray in color, has no metallic luster, and has a rough surface. When it is applied ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/10
CPCC23C8/10C23C8/28C22C14/00C22F1/02C22F1/183C23C8/12
Inventor 刘伍健刘金福林天财高俪芝
Owner 中山源谥真空科技有限公司
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