阅读说明：本技术 高温气体流通器的制作方法 (Method for manufacturing high-temperature gas circulator ) 是由 郭建军 刘二良 郭建明 杨艳文 于 2020-12-30 设计创作，主要内容包括：本发明属于碳纤维复合材料技术领域和热处理技术领域,针对现有高温炉内金属材质的风扇会引入杂质,而石墨制作风扇难度大的上述问题,本发明提供一种高温碳碳气体流通器的制作方法：将碳纤维复合板材和棒材,进行真空高温处理；采用机械加工的方式制作叶片、主轴、锁套及螺丝；将两个叶片相互交叉成十字形状,插入主轴的母槽中,将锁套安装到叶片的第一子槽中,并用螺丝将锁套和主轴固定,制作成高温气体流通器；将组装完毕的高温气体流通器通过气相沉积的方法沉积碳；将气相沉积完毕的高温气体流通器再次进行真空高温处理。本发明的气体流通器的制作方法简单,在高温条件下,结构稳定,产品纯净。(The invention belongs to the technical field of carbon fiber composite materials and heat treatment, and provides a manufacturing method of a high-temperature carbon gas circulator, aiming at the problems that impurities can be introduced into a fan made of a metal material in the conventional high-temperature furnace and the fan made of graphite is difficult to manufacture: carrying out vacuum high-temperature treatment on the carbon fiber composite plate and the bar; manufacturing a blade, a main shaft, a lock sleeve and a screw in a machining mode; the two blades are mutually crossed into a cross shape and are inserted into a female groove of a main shaft, a lock sleeve is arranged in a first sub-groove of the blade, and the lock sleeve and the main shaft are fixed by screws to manufacture the high-temperature gas circulator; depositing carbon on the assembled high-temperature gas circulator by a vapor deposition method; and carrying out vacuum high-temperature treatment on the high-temperature gas circulator subjected to the vapor deposition again. The gas circulator of the invention has simple manufacturing method, stable structure and pure product under the high-temperature condition.)

1. The manufacturing method of the high-temperature gas circulator is characterized by comprising the following steps of:

(1) the carbon content is more than or equal to 95 percent, and the density is 1.3g/cm³-1.6g/cm³The carbon fiber composite flat material and the bar are subjected to vacuum high-temperature treatment to form a material with high carbon purity and difficult deformation; the high-temperature treatment steps are as follows: setting a heating curve when the vacuum is below 10Pa, heating to 1000-1100 ℃ within 6h, then heating to 1550-1650 ℃ within 6h, heating to 2150-2250 ℃ within 7h, keeping the temperature for 3-10 h, automatically cooling to below 60 ℃ and taking out for later use;

(2) the method is characterized in that the plate and the bar processed in the steps are machined to manufacture blades, a main shaft, a lock sleeve and screws, and specifically comprises the following steps:

processing the carbon fiber composite flat plate material into a plate with uniform thickness, processing the plate into a strip-shaped material, and respectively forming a first subslot and a second subslot on the upper side and the lower side of the middle position of the strip-shaped material to be used as blades;

manufacturing a main shaft, a lock sleeve and a screw by using a carbon fiber composite bar; the manufacturing method of the main shaft comprises the steps of forming a female groove corresponding to the second sub-groove in one end of the carbon fiber composite bar, and forming a threaded hole in the side face of the female groove; the lock sleeve is cylindrical, the diameter of the lock sleeve is matched with the width of the first subslot of the blade, the bottom of the lock sleeve is provided with a cross-shaped groove, and the side surface of the lock sleeve is provided with a threaded hole;

(3) the two blades are mutually crossed into a cross shape and are inserted into a female groove of a main shaft, a lock sleeve is arranged in a first sub-groove of the blade, and the lock sleeve and the main shaft are fixed by screws to manufacture the high-temperature gas circulator;

(4) depositing carbon by a high-temperature gas circulator through a vapor deposition method to form a compact, light, high-temperature-resistant and high-strength high-temperature gas circulator; vapor deposition treatment: setting a heating curve when the vacuum degree is below 100Pa, heating to 280-320 ℃ in 2h, heating to 880-920 ℃ in 6h, heating to 1000-1050 ℃ in 1.5h, keeping the temperature for 3 h, and introducing nitrogen and carbon source gas, wherein the gas flow of each gas is 0-30m³Keeping the ventilation time at 0-1000 hours per hour, cutting off the power and cooling after the ventilation is finished, automatically cooling to below 60 ℃, and taking out the air to obtain the product;

(5) and (3) carrying out vacuum high-temperature treatment again on the compact, light-weight, high-temperature-resistant and high-strength high-temperature gas circulator, wherein the vacuum high-temperature treatment step is the same as the step of the vacuum high-temperature treatment in the step (1).

2. The method for manufacturing a high-temperature gas circulator as claimed in claim 1, wherein the step (1) of vacuum high-temperature treatment comprises the steps of: and (3) vacuumizing to below 10Pa, setting a heating curve, heating to 1050 ℃ within 6h, then heating to 1600 ℃ within 6h, heating to 2200 ℃ within 7h, keeping the temperature at 2200 ℃ for 3-10 h, automatically cooling to below 60 ℃, and taking out.

3. A method for manufacturing a high temperature gas circulator as claimed in claim 1, wherein the step (4) of processing the gas phase deposition comprises: setting a heating curve when the vacuum degree is below 100Pa, heating to 300 ℃ in 2h, heating to 900 ℃ in 6h, heating to 1020 ℃ in 1.5h, keeping the temperature at 1020 ℃ for 3 h, and introducing nitrogen and carbon source gas.

4. The method for manufacturing a high-temperature gas circulator as claimed in claim 1, wherein the step (4) of vapor deposition includes: the carbon source gas used is any one of propane, propylene or natural gas.

5. The method for manufacturing a high-temperature gas circulator as claimed in claim 1, wherein the step (4) of vapor deposition includes: the gas flow rate of each gas is 10-20m³The aeration holding time is 100-500 hours per hour.

Technical Field

The invention belongs to the technical field of carbon fiber composite materials and the technical field of heat treatment, and particularly relates to a manufacturing method of a high-temperature gas circulator.

Background

In the prior high-temperature industries, such as vapor deposition, heat treatment, purification and the like, all materials in a furnace cavity are required to be higher and higher due to higher and higher product requirements, and the gas fluidity in the furnace cavity has a great relationship with the product quality and the production efficiency. The Chinese patent with application number of CN201711456443.1 discloses a box-type multipurpose furnace for metal heat treatment, wherein liquid carbon sources are atomized and then premixed with nitrogen according to a certain proportion, so that the uniformity of a carbon-nitrogen atmosphere is ensured, and the air inlet pipe and a fan are integrated to enable mixed air flow to be more uniformly distributed in a heating chamber, so that the phenomenon of carbon deposition in the furnace caused by over-concentrated distribution of the liquid carbon sources is prevented or reduced. However, the problem of the material of the fan is not solved. High-temperature resistant metal can introduce impurities to the product, and the price is high; graphite is resistant to high temperatures, but is brittle and difficult to fabricate into fans.

Disclosure of Invention

Aiming at the problems that impurities can be introduced into a fan made of metal materials in the conventional high-temperature furnace, and the difficulty in manufacturing the fan by using graphite is high, the invention provides the manufacturing method of the high-temperature gas circulator, which is manufactured by using carbon fiber composite materials and adopting an interlocking structure, and has the advantages of high hardness, high structure temperature and pure product under the high-temperature condition.

The invention is realized by the following technical scheme:

a method for manufacturing a high-temperature gas circulator comprises the following steps:

(1) carrying out vacuum high-temperature treatment on carbon fiber composite plates and bars with the carbon content of more than or equal to 95% and the density of 1.3g/cm3-1.6g/cm3 to form materials with high carbon purity and difficult deformation; the high-temperature treatment steps are as follows: setting a heating curve when the vacuum is below 10Pa, heating to 1000-plus-1100 ℃ within 6h, then heating to 1550-plus-1650 ℃ within 6h, heating to 2150-plus-2250 ℃ within 7h, keeping the temperature for 3-10 h, automatically cooling to below 60 ℃, and taking out;

(2) the method is characterized in that the plate and the bar processed in the steps are machined to manufacture blades, a main shaft, a lock sleeve and screws, and specifically comprises the following steps:

processing the carbon fiber composite flat plate material into a plate with uniform thickness, processing the plate into a strip-shaped material, and respectively forming a first subslot and a second subslot on the upper side and the lower side of the middle position of the strip-shaped material to be used as blades;

manufacturing a main shaft, a lock sleeve and a screw by using a carbon fiber composite bar; the manufacturing method of the main shaft comprises the steps of forming a female groove corresponding to the second sub-groove in one end of the carbon fiber composite bar, and forming a threaded hole in the side face of the female groove; the lock sleeve is cylindrical, the diameter of the lock sleeve is matched with the width of the first subslot of the blade, the bottom of the lock sleeve is provided with a cross-shaped groove, and the side surface of the lock sleeve is provided with a threaded hole;

(3) the two blades are mutually crossed into a cross shape and are inserted into a female groove of a main shaft, a lock sleeve is arranged in a first sub-groove of the blade, and the lock sleeve and the main shaft are fixed by screws to manufacture the high-temperature gas circulator;

(4) depositing carbon on the assembled high-temperature gas circulator by a vapor deposition method to form a compact, light, high-temperature-resistant and high-strength high-temperature gas circulator; vapor deposition treatment: setting a heating curve when the vacuum degree is below 100Pa, heating to 280-320 ℃ in 2h, heating to 880-920 ℃ in 6h, heating to 1000-1050 ℃ in 1.5h, keeping the temperature for 3 h, and introducing nitrogen and carbon source gas, wherein the gas flow of each gas is 0-30m³Keeping the ventilation time at 0-1000 hours per hour, cutting off the power and cooling after the ventilation is finished, automatically cooling to below 60 ℃, and taking out the air to obtain the product;

(5) and (3) carrying out vacuum high-temperature treatment on the high-temperature gas circulator after the vapor deposition, wherein the vacuum high-temperature treatment step is the same as the step (1) of vacuum high-temperature treatment.

Further, the step (1) of vacuum high-temperature treatment comprises the following steps: and (3) vacuumizing to below 10Pa, setting a heating curve, heating to 1050 ℃ within 6h, then heating to 1600 ℃ within 6h, heating to 2200 ℃ within 7h, keeping the temperature at 2200 ℃ for 3-10 h, automatically cooling to below 60 ℃, and taking out.

Further, the treatment step of vapor deposition in the step (4): setting a heating curve when the vacuum degree is below 100Pa, heating to 300 ℃ in 2h, heating to 900 ℃ in 6h, heating to 1020 ℃ in 1.5h, keeping the temperature at 1020 ℃ for 3 h, and introducing nitrogen and carbon source gas.

Further, the step (4) is a vapor deposition treatment step: the carbon source gas used is any one of propane, propylene or natural gas.

Further, the step (4) is a vapor deposition treatment step: the gas flow rate of each gas is 10-20m³The aeration holding time is 100-500 hours per hour.

The invention has the following beneficial effects:

the carbon fiber composite material is firstly subjected to vacuum high-temperature treatment at the temperature of more than 2000 ℃, so that the purity of the product is improved, and the deformation caused by overhigh temperature in use is prevented. The invention adopts the carbon-carbon material interlocking structure to be combined into the gas circulator, has good structural stability, and can avoid using expensive high-temperature resistant metal connecting pieces to introduce impurities into the carbon-carbon material. Carry out vapor deposition after the gas flow ware assembles, make carbon strip surface compacter, prevent that other material from getting into carbon material and influencing its life, on the other hand can let intercrossing carbon material link together more closely, make its structure firmer. The vacuum high-temperature treatment at the temperature of more than 2000 ℃ is carried out again, so that the purity of the product can be further improved.

Drawings

FIG. 1 is a schematic view of a blade according to embodiment 1;

FIG. 2 is a schematic structural view of a spindle according to embodiment 1;

FIG. 3 is a plan view of the spindle of embodiment 1.

In the above figures: 1. a blade; 11. a first subslot; 12. a second subslot; 2. a main shaft; 21. a mother tank; 22. a threaded bore.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings.

Example 1

A method for manufacturing a high-temperature gas circulator comprises the following steps:

(1) the carbon content is 95 percent, and the density is 1.3g/cm³The carbon fiber composite board and the bar are subjected to vacuum high-temperature treatment to form a material with high carbon purity and difficult deformation; the high-temperature treatment steps are as follows: vacuum below 10Pa, setting literHeating to 1050 deg.C in 6h, heating to 1600 deg.C in 6h, heating to 2200 deg.C in 7h, maintaining the temperature at 2200 deg.C for 7h, automatically cooling to below 60 deg.C, and taking out.

(2) The method is characterized in that the plate and the bar processed in the steps are machined to manufacture blades, a main shaft, a lock sleeve and screws, and specifically comprises the following steps:

processing a carbon fiber composite flat plate material into a plate with uniform thickness, processing the plate into a strip-shaped material, and respectively forming a first subslot 11 and a second subslot 12 at the upper side and the lower side of the middle position of the strip-shaped material as a blade 1, as shown in fig. 1;

manufacturing a main shaft 2, a lock sleeve and a screw by using a carbon fiber composite bar; the manufacturing method of the main shaft 2 is that one end of the carbon fiber composite bar is provided with a female groove 21 corresponding to the second sub-groove, the side surface is provided with a threaded hole 22, and the other end of the carbon fiber composite bar is matched with an output shaft of a motor, as shown in fig. 2-3;

the lock sleeve is cylindrical, the diameter of the lock sleeve is matched with the width of the first subslot of the blade, a cross-shaped groove is formed in the middle of the lock sleeve, and a threaded hole is formed in the side face of the lock sleeve;

(3) the two blades are mutually crossed into a cross shape and inserted into a female groove of a main shaft, a lock sleeve is arranged in a first sub-groove of each blade, a threaded hole in the main shaft corresponds to a threaded hole in the lock sleeve in position, the lock sleeve and the main shaft are fixed by screws, and the blades are tightly fixed between the main shaft and the lock sleeve to manufacture a high-temperature gas circulator;

(4) depositing carbon on the assembled gas circulator by a vapor deposition method to form a compact, light, high-temperature-resistant and high-strength high-temperature gas circulator; the vapor deposition comprises the following processing steps: setting a heating curve when the vacuum degree is below 100Pa, heating to 300 ℃ in 2h, heating to 900 ℃ in 6h, heating to 1020 ℃ in 1.5h, keeping the temperature at 1020 ℃ for 3 h, and then introducing nitrogen and propane; the gas flow rate of each gas was 10m³Keeping the ventilation time at 400 hours per hour, cutting off the power and cooling after the ventilation is finished, automatically cooling to below 60 ℃, and taking out the product.

(5) And (3) carrying out vacuum high-temperature treatment on the gas circulator after the vapor deposition is finished, wherein the vacuum high-temperature treatment is the same as the step of the vacuum high-temperature treatment in the step (1).

Example 2

A method for manufacturing a high-temperature gas circulator comprises the following steps:

(1) the carbon content is more than or equal to 98 percent and the density is 1.6g/cm³The carbon fiber composite board and the bar are subjected to vacuum high-temperature treatment to form a material with high carbon purity and difficult deformation; the high-temperature treatment steps are as follows: and (3) vacuumizing to below 10Pa, setting a heating curve, heating to 1000 ℃ in 6h, then heating to 1550 ℃ in 6h, heating to 2150 ℃ in 7h, keeping the temperature at 2150 ℃ for 3 h, automatically cooling to below 60 ℃, and taking out the product.

(2) The method is characterized in that the plate and the bar processed in the steps are machined to manufacture blades, a main shaft, a lock sleeve and screws, and specifically comprises the following steps:

processing the carbon fiber composite flat plate material into a plate with uniform thickness, processing the plate into a strip-shaped material, and respectively forming a first subslot and a second subslot on the upper side and the lower side of the middle position of the strip-shaped material to be used as blades;

manufacturing a main shaft, a lock sleeve and a screw by using a carbon fiber composite bar; the manufacturing method of the main shaft comprises the steps that a female groove corresponding to the second sub-groove is formed in one end of the carbon fiber composite bar, a threaded hole is formed in the side face of the female groove, and the other end of the female groove is matched with an output shaft of the motor;

the lock sleeve is cylindrical, the diameter of the lock sleeve is matched with the width of the first subslot of the blade, a cross-shaped groove is formed in the middle of the lock sleeve, and a threaded hole is formed in the side face of the lock sleeve;

(3) the two blades are mutually crossed into a cross shape and are inserted into a female groove of a main shaft, a lock sleeve is arranged in a first sub-groove of each blade, a threaded hole in the main shaft corresponds to a threaded hole in the lock sleeve in position, the lock sleeve and the main shaft are fixed by screws, the blades are tightly fixed between the main shaft and the lock sleeve, and the high-temperature gas circulator is manufactured, and the structure of the high-temperature gas circulator refers to embodiment 1;

(4) depositing carbon on the assembled gas circulator by a vapor deposition method to form a compact, light, high-temperature-resistant and high-strength high-temperature gas circulator; vapor deposition treatment: degree of vacuumSetting a heating curve below 100Pa, heating to 280 deg.C for 2 hr, heating to 880 deg.C for 6 hr, heating to 1000 deg.C for 1.5 hr, keeping the temperature for 3 hr, introducing nitrogen and propylene, wherein the gas flow rate of each gas is 20m³Keeping the ventilation time at 600 hours per hour, cutting off the power and cooling after the ventilation is finished, automatically cooling to below 60 ℃, and taking out the product.

(5) And (3) carrying out vacuum high-temperature treatment on the gas circulator after the vapor deposition is finished, wherein the vacuum high-temperature treatment is the same as the step of the vacuum high-temperature treatment in the step (1).

Example 3

A method for manufacturing a high-temperature gas circulator comprises the following steps:

(1) the carbon content is more than or equal to 98 percent and the density is 1.8g/cm³The carbon fiber composite board and the bar are subjected to vacuum high-temperature treatment to form a material with high carbon purity and difficult deformation; the high-temperature treatment steps are as follows: and (3) vacuumizing to below 10Pa, setting a heating curve, heating to 1100 ℃ in 6h, then heating to 1650 ℃ in 6h, heating to 2250 ℃ in 7h, keeping the temperature at 2250 ℃ for 10 h, automatically cooling to below 60 ℃, and taking out to obtain the product.

(2) The method is characterized in that the plate and the bar processed in the steps are machined to manufacture blades, a main shaft, a lock sleeve and screws, and specifically comprises the following steps:

processing the carbon fiber composite flat plate material into a plate with uniform thickness, processing the plate into a strip-shaped material, and respectively forming a first subslot and a second subslot on the upper side and the lower side of the middle position of the strip-shaped material to be used as blades;

manufacturing a main shaft, a lock sleeve and a screw by using a carbon fiber composite bar; the manufacturing method of the main shaft comprises the steps that a female groove corresponding to the second sub-groove is formed in one end of the carbon fiber composite bar, a threaded hole is formed in the side face of the female groove, and the other end of the female groove is matched with an output shaft of the motor;

the lock sleeve is cylindrical, the diameter of the lock sleeve is matched with the width of the first subslot of the blade, a cross-shaped groove is formed in the middle of the lock sleeve, and a threaded hole is formed in the side face of the lock sleeve;

(3) the two blades are mutually crossed into a cross shape and are inserted into a female groove of a main shaft, a lock sleeve is arranged in a first sub-groove of each blade, a threaded hole in the main shaft corresponds to a threaded hole in the lock sleeve in position, the lock sleeve and the main shaft are fixed by screws, the blades are tightly fixed between the main shaft and the lock sleeve, and the high-temperature gas circulator is manufactured, and the structure of the high-temperature gas circulator refers to embodiment 1;

(4) depositing carbon on the assembled gas circulator by a vapor deposition method to form a compact, light, high-temperature-resistant and high-strength high-temperature gas circulator; vapor deposition treatment: setting a heating curve when the vacuum degree is below 100Pa, heating to 320 ℃ in 2h, heating to 920 ℃ in 6h, heating to 1050 ℃ in 1.5h, keeping the temperature for 3 h, introducing nitrogen and natural gas, wherein the gas flow rate of each gas is 30m³Keeping the ventilation time at 900 hours per hour, cutting off the power and cooling after the ventilation is finished, automatically cooling to below 60 ℃, and taking out the product.

(5) And (3) carrying out vacuum high-temperature treatment on the gas circulator after the vapor deposition is finished, wherein the vacuum high-temperature treatment is the same as the step of the vacuum high-temperature treatment in the step (1).

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.