阅读说明：本技术 一种钛金属制品表面共融自然结晶和物理着色工艺 (Surface co-melting natural crystallization and physical coloring process for titanium metal product ) 是由 王旭丰 王镇 于 2020-06-22 设计创作，主要内容包括：本发明提供一种钛金属制品表面共融自然结晶和物理着色工艺,涉及钛金属处理技术领域。该钛金属表面共融结晶及表面着色处理工艺,包括以下步骤：S1、钛金属表面结晶处理：1)将钛金属制品放置与真空炉中,对真空炉抽低真空时,首先开启旋片真空泵,真空炉中的真空度达到600Pa后,开启罗茨真空泵继续抽真空；2)直到真空炉中真空度达到1Pa后,开启无油分子泵,进行高真空的抽取,同时开始对钛金属制品进行升温。本发明通过采用无油分子泵进行抽真空,分子泵无油无烟,噪音小；同时对钛金属制品采用物理变色、没有任何添加,不用辅助化学物品着色,没有污染,大大减少了对人体的危害,从而有益于身体健康。(The invention provides a surface co-melting natural crystallization and physical coloring process of a titanium metal product, and relates to the technical field of titanium metal treatment. The co-melting crystallization and surface coloring treatment process for the titanium metal surface comprises the following steps: s1, titanium surface crystallization treatment: 1) placing a titanium metal product in a vacuum furnace, starting a rotary vane vacuum pump when the vacuum furnace is vacuumized, and starting a roots vacuum pump to continue vacuumizing after the vacuum degree in the vacuum furnace reaches 600 Pa; 2) and starting an oil-free molecular pump until the vacuum degree in the vacuum furnace reaches 1Pa, extracting high vacuum, and simultaneously heating the titanium metal product. The molecular pump is oil-free and smokeless, and has low noise; meanwhile, the titanium metal product is subjected to physical color change without any addition, auxiliary chemical coloring is not needed, pollution is avoided, and harm to human bodies is greatly reduced, so that the titanium metal product is beneficial to body health.)

1. A surface co-melting natural crystallization and physical coloring process of a titanium metal product is characterized in that: the process comprises the following steps:

s1, surface crystallization treatment of the titanium metal product:

1) placing a titanium metal product in a vacuum furnace, starting a rotary vane vacuum pump when the vacuum furnace is vacuumized, and starting a roots vacuum pump to continue vacuumizing after the vacuum degree in the vacuum furnace reaches 600 Pa;

2) starting an oil-free molecular pump until the vacuum degree in the vacuum furnace reaches 1Pa, extracting high vacuum, and simultaneously starting to heat the titanium metal product;

3) when the vacuum degree in the vacuum furnace reaches 0.5Pa, the temperature is increased from 0 ℃ to 450 ℃, the time is 30-50min, and the temperature increasing rate is 9-15 ℃/min;

4) when the vacuum degree in the vacuum furnace reaches 0.1Pa, carrying out platform heat preservation at 450 ℃ for 8-12 minutes;

5) when the vacuum degree in the vacuum furnace reaches 0.05Pa, the temperature is raised from 450 ℃ to 750 ℃ for 20-30min, the temperature raising rate is 10-15 ℃/min, and meanwhile, the 750 ℃ platform heat preservation is carried out, and the heat preservation time is 5-15 min;

6) when the vacuum degree in the vacuum furnace reaches 0.005Pa, the temperature can be raised from 750 ℃ to 1050 ℃ for 30-40min, the temperature raising rate is 7.5-10 ℃/min, and meanwhile, the platform heat preservation can be carried out at the selected temperature between 750 ℃ and 1050 ℃ for 10-15 min;

7) when the vacuum degree in the vacuum furnace reaches 0.002Pa, the temperature can be raised from 1050 ℃ to 1150 ℃ for 10-20min, the temperature raising rate is 5-10 ℃/min, and meanwhile, the platform heat preservation can be carried out at the selected temperature between 1050 ℃ and 1150 ℃ for 5-10 min;

wherein, the step 6) and the step 7) can select time for heat preservation between 750-; if the heat preservation temperature of the step 6) is selected between 750 ℃ and 1050 ℃, a small crystal titanium metal product is obtained, and the step 7) is not executed;

s2, coloring the surface of the titanium metal product:

after the crystallization treatment of the titanium metal product is finished, cooling is started, the temperature is cooled to the room temperature from the platform heat preservation temperature in the step 6) or 7), the temperature of the discharged gas of the titanium metal product is changed in the cooling process, the discharged gas is used for changing the color of the titanium metal product, and the color change is as follows:

1) bright white: the air release temperature is 180 ℃ and 250 ℃;

2) light yellow: the air release temperature is 300-340 ℃;

3) golden yellow: the air release temperature is 380-420 ℃;

4) blue-violet: the air release temperature is 480-520 ℃;

5) red: the air release temperature is 600-800 ℃;

6) green: the gassing temperature was 950-.

Technical Field

The invention relates to the technical field of titanium metal treatment, in particular to a surface eutectic natural crystallization and physical coloring process of a titanium metal product.

Background

Titanium metal, which is similar in appearance to steel, has a silver gray luster, is a transition metal, and has been considered a rare metal for some time in the past. Titanium is not a rare metal, and it accounts for about 0.42% of the total weight in the earth's crust, 16 times the total weight of copper, nickel, lead, and zinc. Seventh, more than 70 titaniferous minerals are ranked in the metal world. The titanium has high strength, low density, high hardness, high melting point and strong corrosion resistance; high-purity titanium has good plasticity, but becomes brittle and hard when impurities exist, and is widely applied to the field of articles for daily use or the field of medical appliances at present, such as vacuum cups, tableware, pots, cutters and medical appliances which are partially directly applied to human bodies are generally made of titanium metal.

In the traditional process, the surface of the product is generally polished and sandblasted, but the polished and sandblasted titanium cup still has the problems of low surface hardness, poor mechanical property, easy fingerprint contamination and the like, and needs to be improved, so that the titanium metal product is heated and crystallized at high temperature in the prior art. However, the high vacuum pumping in the industry at present uses diffusion pump vacuum pumping, which has oil pollution source, high noise, high energy consumption and great resource waste; meanwhile, in the industry, when the titanium metal is used for coloring heat-insulating cups, vacuum cups, tableware, pots, cutters, medical instruments and the like which are partially and directly applied to human bodies, the coloring is mainly used for assisting the coloring and pollution of chemical articles, the coloring is harmful to the bodies of users, and the treatment process has great limitation.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a process for co-melting natural crystallization and physical coloring of the surface of a titanium metal product, which solves the defects and shortcomings in the prior art.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a process for co-melting natural crystallization and physical coloring of a surface of a titanium metal product, the process comprising the steps of:

s1, surface crystallization treatment of the titanium metal product:

1) placing a titanium metal product in a vacuum furnace, starting a rotary vane vacuum pump when the vacuum furnace is vacuumized, and starting a roots vacuum pump to continue vacuumizing after the vacuum degree in the vacuum furnace reaches 600 Pa;

2) starting an oil-free molecular pump until the vacuum degree in the vacuum furnace reaches 1Pa, extracting high vacuum, and simultaneously starting to heat the titanium metal product;

3) when the vacuum degree in the vacuum furnace reaches 0.5Pa, the temperature is increased from 0 ℃ to 450 ℃, the time is 30-50min, and the temperature increasing rate is 9-15 ℃/min;

4) when the vacuum degree in the vacuum furnace reaches 0.1Pa, carrying out platform heat preservation at 450 ℃ for 8-12 minutes;

5) when the vacuum degree in the vacuum furnace reaches 0.05Pa, the temperature is raised from 450 ℃ to 750 ℃ for 20-30min, the temperature raising rate is 10-15 ℃/min, and meanwhile, the 750 ℃ platform heat preservation is carried out, and the heat preservation time is 5-15 min;

6) when the vacuum degree in the vacuum furnace reaches 0.005Pa, the temperature can be raised from 750 ℃ to 1050 ℃ for 30-40min, the temperature raising rate is 7.5-10 ℃/min, and meanwhile, the platform heat preservation can be carried out at the selected temperature between 750 ℃ and 1050 ℃ for 10-15 min;

7) when the vacuum degree in the vacuum furnace reaches 0.002Pa, the temperature can be raised from 1050 ℃ to 1150 ℃ for 10-20min, the temperature raising rate is 5-10 ℃/min, and meanwhile, the platform heat preservation can be carried out at the selected temperature between 1050 ℃ and 1150 ℃ for 5-10 min;

wherein, the step 6) and the step 7) can select time for heat preservation between 750-; if the heat preservation temperature of the step 6) is selected between 750 ℃ and 1050 ℃, a small crystal titanium metal product is obtained, and the step 7) is not executed;

s2, coloring the surface of the titanium metal product:

after the crystallization treatment of the titanium metal product is finished, cooling is started, the temperature is cooled to the room temperature from the platform heat preservation temperature in the step 6) or 7), the temperature of the discharged gas of the titanium metal product is changed in the cooling process, the discharged gas is used for changing the color of the titanium metal product, and the color change is as follows:

1) bright white: the air release temperature is 150 ℃ and 250 ℃;

2) light yellow: the air release temperature is 300-340 ℃;

3) golden yellow: the air release temperature is 380-420 ℃;

4) blue-violet: the air release temperature is 480-520 ℃;

5) red color series: the air release temperature is 600-800 ℃;

6) green color system: the gassing temperature was 950-.

(III) advantageous effects

The invention provides a surface co-melting natural crystallization and physical coloring process of a titanium metal product. The method has the following beneficial effects:

1. according to the invention, the oil-free molecular pump is adopted for vacuumizing, so that the molecular pump is oil-free and smokeless, and has low noise; meanwhile, the titanium metal product adopts physical color change, is not added, does not need auxiliary chemical coloring, has no pollution, and greatly reduces the harm to human bodies, thereby being beneficial to the health.

2. The oil-free molecular pump system can better control the phenomenon of oil return and the like of the vacuum pump, and the titanium metal product is not polluted by oil stains in the aspects of brazing and crystallization, so that the discharging effect of the titanium metal product is brighter and more white.

Detailed Description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

the embodiment of the invention provides a surface co-melting natural crystallization and physical coloring process for a titanium metal product, which comprises the following steps:

s1, surface crystallization treatment of the titanium metal product:

1) placing a titanium metal product (titanium cup) in a vacuum furnace, starting a rotary vane vacuum pump when the vacuum furnace is vacuumized, and starting a Roots vacuum pump to continue vacuumizing after the vacuum degree in the vacuum furnace reaches 600 Pa;

2) starting an oil-free molecular pump until the vacuum degree in the vacuum furnace reaches 1Pa, extracting high vacuum, and simultaneously starting to heat the titanium metal product;

3) when the vacuum degree in the vacuum furnace reaches 0.5Pa, the temperature is increased from 0 ℃ to 450 ℃, the time is 30min, and the temperature increasing rate is 15 ℃/min;

4) when the vacuum degree in the vacuum furnace reaches 0.1Pa, carrying out platform heat preservation at 450 ℃ for 12 minutes;

5) when the vacuum degree in the vacuum furnace reaches 0.05Pa, the temperature is increased from 450 ℃ to 750 ℃, the time is 20min, the temperature increasing rate is 15 ℃/min, and meanwhile, the 750 ℃ platform heat preservation is carried out, and the heat preservation time is 15 min;

6) when the vacuum degree in the vacuum furnace reaches 0.005Pa, the temperature can be raised from 750 ℃ to 1050 ℃ for 40min, the temperature raising rate is 7.5 ℃/min, and meanwhile, the platform heat preservation can be carried out at the selected temperature between 750 ℃ and 1050 ℃, and the heat preservation time is 10 min;

7) when the vacuum degree in the vacuum furnace reaches 0.002Pa, the temperature is increased from 1050 ℃ to 1150 ℃ for 20min, the temperature increasing rate is 5 ℃/min, and meanwhile, the platform heat preservation is carried out at the selected temperature between 1050 ℃ and 1150 ℃, and the heat preservation time is 5 min;

s2, coloring the surface of the titanium metal product:

after the crystallization treatment of the titanium metal product is finished, cooling is started, the platform heat preservation temperature in the temperature step 6) or 7) is cooled to room temperature, the temperature of the discharged gas of the titanium metal product is changed in the cooling process, the discharged gas is used for changing the color of the titanium metal product, and the color change is as follows:

1) bright white: the air release temperature is 150 ℃ and 250 ℃;

2) light yellow: the air release temperature is 300-340 ℃;

3) golden yellow: the air release temperature is 380-420 ℃;

4) blue-violet: the air release temperature is 480-520 ℃;

5) red: the air release temperature is 600-800 ℃;

6) green: the gassing temperature was 950-.

In the invention, the vacuum furnace used for titanium metal crystallization is a brand-new high-molecular oil-free vacuum system double-chamber multifunctional vacuum furnace(ii) a The maximum vacuum degree of the adopted molecular pump system can reach 10^-4Pa magnitude order, which is one magnitude order higher than that of a diffusion pump; the oil-free molecular pump system can better control the phenomena of oil return and the like of the vacuum pump, and has no oil pollution for titanium metal brazing and titanium metal crystallization, so that the discharging effect of a titanium metal product is brighter and more white, and the maintenance of the oil-free molecular pump system is simpler and more convenient; the double-chamber vacuum furnace is used for a long time in the vacuum heat-insulation cup industry, and the furnace B begins to heat up while the furnace A cools down, so that the efficiency of the vacuum cup brazing crystallization is greatly improved, and the energy consumption is greatly reduced.

Example two:

the embodiment of the invention provides a surface co-melting natural crystallization and physical coloring process for a titanium metal product, which comprises the following steps:

s1, surface crystallization treatment of the titanium metal product:

1) placing a titanium metal product in a vacuum furnace, starting a rotary vane vacuum pump when the vacuum furnace is vacuumized, and starting a roots vacuum pump to continue vacuumizing after the vacuum degree in the vacuum furnace reaches 600 Pa;

2) starting an oil-free molecular pump until the vacuum degree in the vacuum furnace reaches 1Pa, extracting high vacuum, and simultaneously starting to heat the titanium metal product;

3) when the vacuum degree in the vacuum furnace reaches 0.5Pa, the temperature is increased from 0 ℃ to 450 ℃, the time is 40min, and the temperature increasing rate is 11.25 ℃/min;

4) when the vacuum degree in the vacuum furnace reaches 0.1Pa, carrying out platform heat preservation at 450 ℃ for 10 minutes;

5) when the vacuum degree in the vacuum furnace reaches 0.05Pa, the temperature is increased from 450 ℃ to 750 ℃, the time is 25min, the temperature increasing rate is 12 ℃/min, and meanwhile, the 750 ℃ platform heat preservation is carried out, and the heat preservation time is 10 min;

6) when the vacuum degree in the vacuum furnace reaches 0.005Pa, the temperature can be raised from 750 ℃ to 1050 ℃ for 40min, the temperature raising rate is 7.5 ℃/min, and meanwhile, the platform heat preservation can be carried out at the selected temperature between 750 ℃ and 1050 ℃, and the heat preservation time is 10 min;

7) when the vacuum degree in the vacuum furnace reaches 0.002Pa, the temperature can be raised from 1050 ℃ to 1150 ℃ for 20min, the temperature raising rate is 5 ℃/min, and meanwhile, the platform heat preservation can be carried out at the selected temperature between 1050 ℃ and 1150 ℃, and the heat preservation time is 5 min;

s2, coloring the surface of the titanium metal product:

after the crystallization treatment of the titanium metal product is finished, cooling is started, the temperature is cooled to the room temperature from the platform heat preservation temperature in the step 6) or 7), the temperature of the discharged gas of the titanium metal product is changed in the cooling process, the discharged gas is used for changing the color of the titanium metal product, and the color change is as follows:

1) bright white: the air release temperature is 150 ℃ and 250 ℃;

2) light yellow: the air release temperature is 300-340 ℃;

3) golden yellow: the air release temperature is 380-420 ℃;

4) blue-violet: the air release temperature is 480-520 ℃;

5) red: the air release temperature is 600-800 ℃;

6) green: the gassing temperature was 950-.

Example three:

the embodiment of the invention provides a surface co-melting natural crystallization and physical coloring process for a titanium metal product, which comprises the following steps:

s1, surface crystallization treatment of the titanium metal product:

1) placing a titanium metal product in a vacuum furnace, starting a rotary vane vacuum pump when the vacuum furnace is vacuumized, and starting a roots vacuum pump to continue vacuumizing after the vacuum degree in the vacuum furnace reaches 600 Pa;

2) starting an oil-free molecular pump until the vacuum degree in the vacuum furnace reaches 1Pa, extracting high vacuum, and simultaneously starting to heat the titanium metal product;

3) when the vacuum degree in the vacuum furnace reaches 0.5Pa, the temperature is increased from 0 ℃ to 450 ℃, the time is 50min, and the temperature increasing rate is 9 ℃/min;

4) when the vacuum degree in the vacuum furnace reaches 0.1Pa, carrying out platform heat preservation at 450 ℃ for 8 minutes;

5) when the vacuum degree in the vacuum furnace reaches 0.05Pa, the temperature is increased from 450 ℃ to 750 ℃, the time is 30min, the temperature increasing rate is 10 ℃/min, and meanwhile, the 750 ℃ platform heat preservation is carried out, and the heat preservation time is 5 min;

6) when the vacuum degree in the vacuum furnace reaches 0.005Pa, the temperature can be raised from 750 ℃ to 1050 ℃ for 40min, the temperature raising rate is 7.5 ℃/min, and meanwhile, the platform heat preservation can be carried out at the selected temperature between 750 ℃ and 1050 ℃, and the heat preservation time is 10 min;

7) when the vacuum degree in the vacuum furnace reaches 0.002Pa, the temperature can be raised from 1050 ℃ to 1150 ℃ for 20min, the temperature raising rate is 5 ℃/min, and meanwhile, the platform heat preservation can be carried out at the selected temperature between 1050 ℃ and 1150 ℃, and the heat preservation time is 5 min;

s2, coloring the surface of the titanium metal product:

after the crystallization treatment of the titanium metal product is finished, cooling is started, the temperature is cooled to the room temperature from the platform heat preservation temperature in the step 6) or 7), the temperature of the discharged gas of the titanium metal product is changed in the cooling process, the discharged gas is used for changing the color of the titanium metal product, and the color change is as follows:

1) bright white: the air release temperature is 150 ℃ and 250 ℃;

2) light yellow: the air release temperature is 300-340 ℃;

3) golden yellow: the air release temperature is 380-420 ℃;

4) blue-violet: the air release temperature is 480-520 ℃;

5) red: the air release temperature is 600-800 ℃;

6) green: the gassing temperature was 950-.

In the first to third embodiments, wherein, in the steps 6) and 7), the temperature can be maintained at 750-1150 ℃ for a selected time, the temperature is different in crystal form, and the higher the temperature is, the larger the crystal is, and the lower the temperature is, the smaller the crystal is; if the heat preservation temperature of the step 6) is selected between 750 ℃ and 1050 ℃, a small crystal titanium metal product is obtained, and the step 7) is not executed;

according to the invention, the oil-free molecular pump is adopted for vacuumizing, so that the molecular pump is oil-free and smokeless, and has low noise; meanwhile, the titanium metal product adopts physical color change, is not added, does not need auxiliary chemical coloring, has no pollution, and greatly reduces the harm to human bodies, thereby being beneficial to the health.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.