Method for applying tungsten carbide coating to Czochralski silicon cured felt thermal insulation material

Abstract

The invention discloses a method for applying a tungsten carbide coating to a Czochralski silicon cured felt thermal insulation material, which comprises the following operation steps: preparing tungsten carbide powder, and mixing the tungsten carbide powder with a proper amount of solvent to prepare a tungsten carbide coating; cleaning the surface of the Czochralski silicon cured felt thermal insulation material to remove oil stains and impurities; uniformly coating the tungsten carbide coating on the surface of the cured felt thermal insulation material in a spraying or brushing manner; and carrying out heat treatment on the Czochralski silicon cured felt thermal insulation material coated with the tungsten carbide coating at a certain temperature. According to the method for applying the tungsten carbide coating to the Czochralski silicon cured felt thermal insulation material, the Czochralski silicon cured felt thermal insulation material is improved and enhanced by using the tungsten carbide coating, and the tungsten carbide coating can be uniformly and compactly attached to the surface of the Czochralski silicon cured felt thermal insulation material; the wear resistance, the corrosion resistance and the high temperature resistance of the thermal insulation material are obviously improved.

Description

Technical Field

[0001] The invention relates to the technical field of thermal insulation materials, and in particular to a method for applying a tungsten carbide coating to a CZ-pulled single crystal silicon cured felt thermal insulation material. Background Art

[0002] As a new type of thermal insulation material, Czochralski single crystal silicon curing felt has attracted widespread attention due to its excellent thermal insulation performance and stability. It adopts a special process to integrate graphite paper, polyacrylonitrile-based carbon felt and polyacrylonitrile-based carbon cloth. After curing and molding, it is processed by one and two high-temperature treatments. It has excellent ablation resistance, thermal shock resistance, air flow erosion resistance and thermal insulation performance. With the continuous development of science and technology, people have higher and higher requirements for the manufacturing process of Czochralski single crystal silicon curing felt.

[0003] The existing CZ-type single crystal silicon curing felt has certain drawbacks when used. Due to its relatively weak wear resistance, corrosion resistance and high temperature resistance, it is subject to certain limitations in practical applications. Tungsten carbide coating is widely used in various industrial fields due to its high hardness, wear resistance, corrosion resistance and good thermal stability. Therefore, applying tungsten carbide coating to CZ-type single crystal silicon curing felt insulation material will significantly improve its wear resistance, corrosion resistance and high temperature resistance, thereby broadening its application field. To this end, we propose a method for applying tungsten carbide coating to CZ-type single crystal silicon curing felt insulation material. Summary of the invention

[0004] Technical problem to be solved: In view of the shortcomings of the prior art, the present invention provides a method for applying tungsten carbide coating to Czochralski single crystal silicon cured felt insulation material, and improves and strengthens the Czochralski single crystal silicon cured felt insulation material by using tungsten carbide coating. The tungsten carbide coating can be evenly and densely attached to the surface of the Czochralski single crystal silicon cured felt insulation material, significantly improving the wear resistance, corrosion resistance and high temperature resistance of the insulation material, and can effectively solve the problems in the background technology.

[0005] Technical solution: To achieve the above purpose, the technical solution adopted by the present invention is: a method for applying a tungsten carbide coating to a CZ-pulled single crystal silicon curing felt insulation material, comprising the following steps: S1: prepare tungsten carbide powder and mix it with an appropriate amount of solvent to prepare tungsten carbide coating; S2: Clean the surface of the CZ-S single crystal silicon curing felt insulation material to remove oil stains and impurities; S3: Use spraying or brushing to evenly apply the tungsten carbide coating on the surface of the cured felt insulation material; S4: placing the thermal insulation material coated with tungsten carbide coating into a temperature-controlled oven for fixing, closing the oven, and performing temperature control; S5: heat-treating the CZ-S single crystal silicon cured felt insulation material coated with tungsten carbide coating at a certain temperature, so that the tungsten carbide coating is firmly attached to the surface of the insulation material.

[0006] As a preferred technical solution of the present application, the solvent added in the step S1 is a binder, and the tungsten carbide powder is mixed with the binder.

[0007] As a preferred technical solution of the present application, in the step S2, the CZ single crystal silicon curing felt insulation material is mixed into the inside of the medicine box, and an ultrasonic device is arranged inside the medicine box for full immersion and high-pressure washing.

[0008] As a preferred technical solution of the present application, in the step S3, four-corner positioning devices are provided to position the four corners of the thermal insulation material, and a translational coating device is provided directly above the thermal insulation material to ensure uniform coating on the surface of the thermal insulation material.

[0009] As a preferred technical solution of the present application, in the step S4, a temperature control and monitoring system is provided inside the oven to monitor the internal temperature and the surface bonding treatment status of the thermal insulation material in real time during the heat treatment process.

[0010] As a preferred technical solution of the present application, the temperature control and monitoring system includes a temperature monitoring module, a bonding state monitoring camera module, a signal transmission module, a signal processing module, a display module and a temperature control module.

[0011] As a preferred technical solution of the present application, the output ends of the temperature monitoring module and the bonding status monitoring camera module are electrically connected to the input end of the signal processing module through the signal transmission module, and the output end of the signal processing module is electrically connected to the input end of the display module and the temperature control module.

[0012] As a preferred technical solution of the present application, the CZ-S single crystal silicon solidification felt insulation material is cooled and shaped after the heat treatment in step S5.

[0013] Beneficial effects: Compared with the prior art, the present invention provides a method for applying a tungsten carbide coating to a CZ-pull single crystal silicon cured felt thermal insulation material, which has the following beneficial effects: the method for applying a tungsten carbide coating to a CZ-pull single crystal silicon cured felt thermal insulation material improves and strengthens the CZ-pull single crystal silicon cured felt thermal insulation material by using the tungsten carbide coating, and the tungsten carbide coating can be uniformly and densely attached to the surface of the CZ-pull single crystal silicon cured felt thermal insulation material, thereby significantly improving the wear resistance, corrosion resistance and high temperature resistance of the thermal insulation material; It has excellent wear resistance, corrosion resistance and high temperature resistance, can replace the existing thermal field insulation structure, replace carbon-carbon composite materials as the internal support structure, and can also be widely used in the insulation field of the power, steel, cement and other industries, providing these industries with efficient and stable insulation solutions. The entire direct-pull single crystal silicon curing felt has a simple structure, is easy to operate, and has better results than traditional methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a comparative schematic diagram of the method of applying tungsten carbide coating to CZ single crystal silicon cured felt insulation material according to the present invention. DETAILED DESCRIPTION

[0015] The technical scheme of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments, but it will be understood by those skilled in the art that the following described embodiments are part of embodiments of the present invention, rather than all embodiments, and are only used to illustrate the present invention, and should not be considered as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention. If specific conditions are not specified in the embodiments, they are carried out according to normal conditions or conditions recommended by the manufacturer. If the manufacturer is not specified in the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0016] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] like Figure 1 As shown, the method for applying a tungsten carbide coating to a CZ-pulled single crystal silicon curing felt insulation material comprises the following steps: S1: prepare tungsten carbide powder and mix it with an appropriate amount of solvent to prepare tungsten carbide coating; S2: Clean the surface of the CZ-S single crystal silicon curing felt insulation material to remove oil stains and impurities; S3: Use spraying or brushing to evenly apply the tungsten carbide coating on the surface of the cured felt insulation material; S4: placing the thermal insulation material coated with tungsten carbide coating into a temperature-controlled oven for fixing, closing the oven, and performing temperature control; S5: heat-treating the CZ-S single crystal silicon cured felt insulation material coated with tungsten carbide coating at a certain temperature, so that the tungsten carbide coating is firmly attached to the surface of the insulation material.

[0019] The CZ single crystal silicon cured felt insulation material is improved and strengthened by using tungsten carbide coating. The tungsten carbide coating can be evenly and densely attached to the surface of the CZ single crystal silicon cured felt insulation material, significantly improving the wear resistance, corrosion resistance and high temperature resistance of the insulation material.

[0020] Furthermore, the solvent added in step S1 is a binder, and the tungsten carbide powder is mixed with the binder.

[0021] Furthermore, in step S2, the CZ silicon solidification felt insulation material is mixed into the inside of the reagent box, and ultrasonic equipment is arranged inside the reagent box for full immersion and high-pressure washing.

[0022] Furthermore, in step S3, four-corner positioning devices are provided to position the four corners of the thermal insulation material, and a translational coating device is provided just above the thermal insulation material to ensure uniform coating on the surface of the thermal insulation material.

[0023] Furthermore, in step S4, a temperature control and monitoring system is provided inside the oven to monitor the internal temperature and the bonding treatment status of the surface of the thermal insulation material in real time during the heat treatment process.

[0024] Furthermore, the temperature control and monitoring system includes a temperature monitoring module, a bonding state monitoring camera module, a signal transmission module, a signal processing module, a display module and a temperature control module.

[0025] Furthermore, the output ends of the temperature monitoring module and the bonding state monitoring camera module are electrically connected to the input end of the signal processing module through the signal transmission module, and the output end of the signal processing module is electrically connected to the input end of the display module and the temperature control module.

[0026] Furthermore, the CZ-S single crystal silicon solidified felt insulation material after the heat treatment in step S5 is cooled and shaped.

[0027] Embodiment 1: Prepare tungsten carbide powder and mix it with an appropriate amount of solvent to prepare tungsten carbide coating, wherein 100g of tungsten carbide powder and 10g of binder are added; Clean the surface of the CZ-S single crystal silicon curing felt insulation material to remove oil stains and impurities; Use spraying or brushing to evenly apply the tungsten carbide coating on the surface of the cured felt insulation material; The CZ single crystal silicon cured felt insulation material coated with tungsten carbide coating is heat treated at a certain temperature so that the tungsten carbide coating is firmly attached to the surface of the insulation material. The heat treatment temperature is 60°C and the heating time is 5 minutes. At this time, the qualified rate of the finished product is 90%.

[0028] Embodiment 2: Prepare tungsten carbide powder and mix it with an appropriate amount of solvent to prepare tungsten carbide coating, wherein 100g of tungsten carbide powder and 20g of binder are added; Clean the surface of the CZ-S single crystal silicon curing felt insulation material to remove oil stains and impurities; Use spraying or brushing to evenly apply the tungsten carbide coating on the surface of the cured felt insulation material; The CZ-S single crystal silicon cured felt insulation material coated with tungsten carbide coating is heat treated at a certain temperature so that the tungsten carbide coating is firmly attached to the surface of the insulation material. The heat treatment temperature is 70°C and the heating time is 6 minutes. At this time, the qualified rate of the finished product is 95%.

[0029] Embodiment 3: Prepare tungsten carbide powder and mix it with an appropriate amount of solvent to prepare tungsten carbide coating, wherein 100g of tungsten carbide powder and 30g of binder are added; Clean the surface of the CZ-S single crystal silicon curing felt insulation material to remove oil stains and impurities; Use spraying or brushing to evenly apply the tungsten carbide coating on the surface of the cured felt insulation material; The CZ-S single crystal silicon cured felt insulation material coated with tungsten carbide coating is heat treated at a certain temperature so that the tungsten carbide coating is firmly attached to the surface of the insulation material. The heat treatment temperature is 80°C and the heating time is 7 minutes. At this time, the qualified rate of the finished product is 98%.

[0030] Embodiment 4: Prepare tungsten carbide powder and mix it with an appropriate amount of solvent to prepare tungsten carbide coating, wherein 100g of tungsten carbide powder and 40g of binder are added; Clean the surface of the CZ-S single crystal silicon curing felt insulation material to remove oil stains and impurities; Use spraying or brushing to evenly apply the tungsten carbide coating on the surface of the cured felt insulation material; The CZ single crystal silicon cured felt insulation material coated with tungsten carbide coating is heat treated at a certain temperature so that the tungsten carbide coating is firmly attached to the surface of the insulation material. The heat treatment temperature is 90°C and the heating time is 8 minutes. At this time, the qualified rate of the finished product is 95%.

[0031] The CZ-Single Crystal Silicon Curing Felt Insulation Material is improved and enhanced by using tungsten carbide coating. The tungsten carbide coating can be evenly and densely attached to the surface of the CZ-Single Crystal Silicon Curing Felt Insulation Material, significantly improving the wear resistance, corrosion resistance and high temperature resistance of the insulation material. According to the size and shape of the CZ silicon solidified felt insulation material, suitable spraying or brushing equipment can be selected to ensure that the tungsten carbide coating can be evenly coated on the surface of the insulation material. At the same time, the heat treatment temperature and time should be reasonably set according to the properties of the tungsten carbide coating and the heat resistance of the insulation material to ensure that the tungsten carbide coating can be firmly attached to the surface of the insulation material.

[0032] It should be noted that, in this article, relational terms such as first and second (number one, number two), etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A method for applying a tungsten carbide coating to a CZ-pulled single crystal silicon curing felt insulation material, characterized in that: The steps include: S1: prepare tungsten carbide powder and mix it with an appropriate amount of solvent to prepare tungsten carbide coating; S2: Clean the surface of the CZ-S single crystal silicon curing felt insulation material to remove oil stains and impurities; S3: Use spraying or brushing to evenly apply the tungsten carbide coating on the surface of the cured felt insulation material; S4: placing the thermal insulation material coated with tungsten carbide coating into a temperature-controlled oven for fixing, closing the oven, and performing temperature control; S5: heat-treating the CZ-S single crystal silicon cured felt insulation material coated with tungsten carbide coating at a certain temperature, so that the tungsten carbide coating is firmly attached to the surface of the insulation material.

2. The method for applying a tungsten carbide coating to a CZ-type single crystal silicon curing felt insulation material according to claim 1, characterized in that: The solvent added in step S1 is a binder, and the tungsten carbide powder is mixed with the binder.

3. The method for applying tungsten carbide coating to CZ silicon single crystal curing felt insulation material according to claim 1, characterized in that: In the step S2, the CZ single crystal silicon curing felt insulation material is mixed into the inside of the reagent box, and an ultrasonic device is arranged inside the reagent box to fully immerse and high-pressure wash it.

4. The method for applying a tungsten carbide coating to a CZ-type single crystal silicon curing felt insulation material according to claim 1, characterized in that: In the step S3, four-corner positioning devices are provided to position the four corners of the thermal insulation material, and a translational coating device is provided directly above the thermal insulation material to ensure uniform coating on the surface of the thermal insulation material.

5. The method for applying tungsten carbide coating to CZ single crystal silicon curing felt insulation material according to claim 1, characterized in that: In the step S4, a temperature control and monitoring system is provided inside the oven to monitor the internal temperature and the bonding treatment state of the surface of the thermal insulation material in real time during the heat treatment process.

6. The method for applying tungsten carbide coating to CZ single crystal silicon curing felt insulation material according to claim 5, characterized in that: The temperature control and monitoring system comprises a temperature monitoring module, a bonding state monitoring camera module, a signal transmission module, a signal processing module, a display module and a temperature control module.

7. The method for applying tungsten carbide coating to CZ silicon single crystal curing felt insulation material according to claim 6, characterized in that: The output ends of the temperature monitoring module and the bonding state monitoring camera module are electrically connected to the input end of the signal processing module through the signal transmission module, and the output end of the signal processing module is electrically connected to the input end of the display module and the temperature control module.

8. The method for applying tungsten carbide coating to CZ single crystal silicon curing felt insulation material according to claim 1, characterized in that: The CZ single crystal silicon solidified felt insulation material after the heat treatment in step S5 is cooled and shaped.

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