WO2017117889A1

WO2017117889A1 - Enameled article and preparation method thereof

Info

Publication number: WO2017117889A1
Application number: PCT/CN2016/080076
Authority: WO
Inventors: 毛勇男
Original assignee: 广东美的厨房电器制造有限公司; 美的集团股份有限公司
Priority date: 2016-01-05
Filing date: 2016-04-22
Publication date: 2017-07-13
Also published as: CN105506627B; CN105506627A

Abstract

Disclosed is a method for preparing an enameled article, comprising a pretreatment step, an enamel spraying step and a sintering step. The pretreatment step comprises: removing enamel powder from a powder spraying rack (10) by jetting a gas onto the powder spraying rack (10); rinsing the powder spraying rack (10) by jetting an aqueous solution onto the powder spraying rack (10); hanging a base body of an article (20) on the powder spraying rack (10) and rinsing the base body of the article (20) by jetting a rinsing solution onto the base body of the article (20); and drying the base body of the article (20) by air-blowing the base body of the article (20). Also provided is an enameled article.

Description

Enamel part and preparation method thereof

The present application claims priority to Chinese Patent Application No. 201610013184.4, entitled "Enamel Parts and Preparation Methods", which is incorporated herein by reference.

Technical field

The present invention relates to the field of enamel technology, and more particularly to a method for preparing an enamel member and an enamel member produced by the method.

Background technique

At present, the existing enamel products, such as the inner liner of a microwave oven, are prone to undesirable phenomena such as enamel explosion, enamel bursting, enamel unevenness, and porcelain removal, thereby reducing the quality of the enamel product.

Summary of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art.

Accordingly, it is an object of one aspect of the present invention to provide a method for preparing an enamel member which effectively avoids problems such as enamel blasting, enamel bursting, enamel unevenness, and enamel removal.

Another object of the present invention is to provide an enamel member which is produced by the above-described method for preparing an enamel member.

In order to achieve the above object, an embodiment of the present invention provides a method for preparing an enamel member, wherein the part substrate is sequentially obtained by a pretreatment process, a sneezing process, and a sintering process, wherein the pretreatment process includes Step 102: performing a powder-blowing treatment on the dust-spraying device by spraying the gas to the dusting device; and in step 104, cleaning the dusting device by spraying the aqueous solution into the dusting device. Processing, in step 106, the component substrate is hung on the dusting rack, and the component substrate is cleaned by spraying the cleaning liquid to the component substrate; and in step 108, the substrate is blown to the component. In a manner, the part substrate is dried.

According to the preparation method of the enamel part provided by the above embodiment of the present invention, most of the enamel powder remaining on the dusting hopper in the previous production cycle can be blown down by the powder blasting method in the pretreatment process, and then Through the dusting and hanging device cleaning process in the pre-treatment process, all the remaining enamel powder remaining on the dusting rack is washed down, thereby obtaining a clean, non-enamel powder residual powder hanging device, which is guaranteed in the next production cycle. The use of the enamel effect of the dusting suspensor avoids impurities such as enamel powder remaining on the dusting hanger, which adversely affects the adhesion of the enamel powder on the part substrate in the next production cycle, and avoids enamel enamel and enamel. Poor cracking, uneven enamel, de-porcelain and other undesirable phenomena, improve the quality of the enamel parts; through the part of the pre-treatment process of the substrate cleaning process, the surface of the parts of the substrate is cleaned, so that the surface of the part of the substrate without any dirt or impurities, Then, the cleaning liquid on the part substrate is thoroughly dried by the part substrate drying process in the pretreatment process, thereby obtaining no dirt and impurities. Or the residual matrix of the cleaning liquid, which facilitates the good adhesion of the enamel powder to the part base during the sneezing process, avoiding the occurrence of enamel blasting, enamel bursting, enamel unevenness, de-porcelain and the like, and improving the quality of the enamel parts. .

In summary, the preparation method of the enamel parts provided by the above embodiments of the present invention is carried out by powder-washing treatment and cleaning treatment of the powder-spraying stalks, and cleaning and drying treatment of the parts of the parts, thereby effectively ensuring the squirting of the powder hangs. The cleanliness of the base and the parts ensure that the enamel powder adheres well to the part of the part during the sneezing process, avoiding enamel blasting, enamel bursting, enamel unevenness, de-porcelain and other undesirable phenomena, and improving the enamel parts. The quality and the preparation method of the enamel parts provided in the above embodiments are simple and convenient to operate.

In addition, the method for preparing the enamel member provided by the above embodiment of the present invention further has the following additional technical features:

According to an embodiment of the present invention, in the step 102, a plurality of air guns disposed in the powder knocking cabinet are used to inject gas into the dusting rack, and the intermittent air jet method is adopted, and the injection air pressure is 1.1 Pa to 1.65. Pa.

The powder-crushing process is carried out in the powder-killing cabinet, and a plurality of air guns arranged in the powder-spinning cabinet are used to spray the gas to the dust-spraying implement, so that the multi-directional and multi-angle jetting of the powder-spraying implement can be performed as much as possible. Impurities such as enamel powder remaining on the dusting rack are blown down to ensure the powder knocking effect; intermittent jetting is used, for example, every 4s, that is, when the dusting hanger moves to the set position, the powder is suspended. The spraying is carried out to save energy while ensuring the knocking effect; and the blown enamel powder is recovered into the recycling box in the knocking cabinet; preferably, the injection pressure is 1.3 Pa.

According to an embodiment of the present invention, in the step 104, a plurality of water guns disposed in the washing cabinet are used to spray the aqueous solution to the dusting rack, and a batch water spraying method is adopted.

The cleaning process of the dusting and hanging rack is carried out in the washing cabinet, and a plurality of water guns arranged in the washing cabinet are used to spray the aqueous solution of the powder spraying rack to realize multi-directional and multi-angle spraying on the powder spraying rack, thereby Impurities such as enamel powder still remaining on the dusting rack are washed down to ensure the cleaning effect; intermittent spraying is used, for example, every 2s, that is, when the dusting conveyor moves to the set position, the powder is sprayed again. The hanger is sprayed to save energy while ensuring the cleaning effect. Of course, the method of spraying water can be used; and the mixture of the enamel powder and water washed down is recovered in the recycling box in the washing cabinet.

According to an embodiment of the present invention, in the step 106, the cleaning liquid is sprayed to the part base body by using a plurality of cleaning guns disposed on the part cleaning line, and the cleaning gun is selected according to the size of the part base body. Turn on the number.

The part substrate cleaning process is performed on the part cleaning line, and a plurality of cleaning guns provided on the cleaning line are used to spray the cleaning liquid to the part base body, thereby performing multi-directional and multi-angle spraying on the part base body to ensure the cleaning effect; and according to the part substrate Size, select the number of cleaning guns, cleaning time and other parameters, for example, when the parts of the parts are small, only the cleaning guns located on the left and right sides of the cleaning line can be opened. When the parts are large, they can be simultaneously opened under the cleaning line. The cleaning gun in the right and left direction can save energy while ensuring the cleaning effect; and the special cleaning agent for cleaning dirt or impurities can also be selected according to the actual condition of the part substrate.

According to an embodiment of the present invention, in the step 108, the plurality of air cylinders disposed on the component drying line are used to blow the component base, and the drying temperature of the component drying line is 120 ° C to 240 ° C.

The drying process of the part base is carried out on the drying line. After the cleaning process, a large amount of special cleaning agent remains on the part base. When the part base passes through the drying line, it will receive a uniform high temperature, so that the special cleaning agent on the surface of the part is thoroughly baked. Dry, so as to effectively avoid the undesirable phenomenon of uneven sneezing, enamel blasting, fish scale peening, etc. of the parts of the parts when the parts are not dried or not completely dried. It should be noted that the drying time of the component substrate may be determined according to the size of the component substrate and the structural condition, and the temperature range on the drying line is preferably between 120 ° C and 240 ° C.

According to an embodiment of the invention, the sneezing process comprises: step 202, using oblique spray Spraying a spray gun, a direct-injection spray gun or a spray-blowing spray gun to spray the enamel powder on the appearance surface of the part base; in step 204, spraying the inner wall surface of the part base body by using a oblique spray type spray gun, a direct injection type spray gun or a spray-type spray gun Enamel powder; Step 206, spraying a enamel powder to a joint between adjacent wall surfaces of the part substrate by using a oblique spray type spray gun, a direct injection type spray gun or a spray blow type spray gun.

The sneezing method of spraying the joint surface between the appearance surface, the inner wall surface and the adjacent wall surface of the part base body can effectively ensure the sneezing effect, avoiding enamel explosion, enamel bursting, enamel thickness unevenness, off Poor phenomena such as porcelain have improved the quality of enamel parts.

It should be noted that the sneezing process according to the size of the component base can be prepared according to the size and structure of the component base, and each spray gun can adjust the basic parameters, such as the spray voltage, the amount of enamel paint, and the between the spray gun and the component base. Distance, etc., to adjust the thickness of the enamel coating adhered to the surface of the part substrate; and according to the size and structure of the actual part substrate, the connection surface between the outer surface of the part body, the inner wall surface and the adjacent wall surface can be adjusted. The order of sneezing.

According to an embodiment of the present invention, in the pre-treatment process and the sneezing process, the dusting hopper is driven by a conveyor chain, and the moving speed of the conveyor chain is 2.5 m/min to 4.5 m/ Min.

The conveyor chain drives the base body to move at a constant speed to ensure the smoothness of the movement of the parts, thereby ensuring the control precision of the pre-treatment process and the sneezing process, and facilitating mass production.

According to an embodiment of the present invention, the sintering process includes: step 302, hanging the part substrate on a sintering rack, placing the sintering rack into a sintering furnace, and controlling the temperature in the sintering furnace to The low temperature zone and the high temperature zone, the temperature of the low temperature zone is 200 ° C ~ 400 ° C, the temperature of the high temperature zone is 750 ° C ~ 900 ° C; in step 304, the part of the substrate is naturally cooled to obtain the enamel part.

The internal temperature of the sintering furnace is divided into two types under the action of the heating element. One area is a low temperature area with a temperature range of 200 ° C to 400 ° C. The function is to preheat the part base, and if there is no preheating, the parts are The substrate is prone to more severe deformation, and the other region is a high temperature region with a temperature range of 750 ° C to 900 ° C. The function is to dissolve the enamel powder under high temperature and adhere to the surface of the part; the surface of the part after the high temperature sintering process The temperature is higher, so when the parts pass through the cooling box, the natural wind under the sintering racks is used to naturally cool the parts of the parts, so that the temperature of the parts of the parts is lowered to prevent the operator from being burnt.

It should be noted that the pre-treatment step and the sneezing step are connected by one transfer chain, and the single-transfer chain is used in the sintering process. Therefore, when the sneezing process to the sintering process, it is necessary to manually carry the parts to the transfer chain of the sintering process. , that is, transported to the sintering rack.

According to an embodiment of the present invention, in the sintering process, a plurality of the component substrates are hung on one of the sintering susceptors, and the plurality of component substrates are arranged in parallel in the up and down direction.

Hanging a plurality of parts of the substrate on a single sintered rack can effectively increase the productivity and improve the production effect. Usually, a sintered rack adopts a structure of two layers above and below, that is, a sintered rack is suspended in parallel in the up and down direction. For the part base, if necessary, it is also possible to hang more than two parts of the base at one time. Preferably, the speed of the transfer chain is generally 3.5 m/min, which may of course be determined according to the size of the actual part.

An embodiment of another aspect of the present invention provides an enamel member which is produced by the method for producing an enamel member according to any of the above embodiments.

According to the enamel part provided by the above embodiment of the present invention, the enamel layer is formed on the part substrate by the preparation method of the enamel part according to any of the above embodiments, and the powder spraying device is subjected to powder-washing treatment and cleaning treatment in the pre-treatment process. And the cleaning and drying treatment of the parts of the parts, effectively ensuring the cleanliness of the dusting and hanging parts and the parts of the parts, so as to ensure that the enamel powder adheres well to the parts of the parts during the sneezing process, avoiding enamel explosion Porcelain, enamel bursting, enamel unevenness, porcelain removal and other undesirable phenomena have improved the quality of enamel parts.

Additional aspects and advantages of the invention will be apparent from the description of the invention.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic flow chart of a pretreatment process in a method for preparing an enamel member according to an embodiment of the present invention;

2A to 2D are schematic views showing the structure of a pretreatment process according to an embodiment of the present invention, wherein FIG. 2A shows a dusting process of the dusting hanger, FIG. 2B shows a cleaning process of the dusting hanger, and FIG. 2C shows a cleaning process of the component substrate. Figure 2D shows the part substrate drying process;

3 is a partial structural schematic view showing a sneezing process according to an embodiment of the present invention;

4 is a schematic view showing a production process of a pre-treatment process and a sneezing process according to an embodiment of the present invention;

5A to 5C are schematic views showing the structure of a sintering process according to an embodiment of the present invention; wherein, FIG. 5A and FIG. 5B show a high temperature sintering process, and FIG. 5C shows a temperature lowering process;

6 is a schematic view showing a production flow of a sintering process and a testing process according to an embodiment of the present invention;

Wherein, the correspondence between the reference numerals and the component names in FIGS. 2A to 6 is:

10 powder sprayer, 20 parts base, 30 conveyor chain, 40 knocking powder cabinet, 401 air gun, 402 recycling box, 41 washing cabinet, 411 water gun, 412 recycling box, 42 parts cleaning line, 421 cleaning gun, 43 parts drying line , 431 air duct, 50 oblique spray gun, 51 robot arm, 60 sintering rack, 61 conveyor chain, 62 sintering furnace, 63 heating element, 64 cooling box, 65 air cylinder.

detailed description

The present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention, but the invention may be practiced otherwise than as described herein. The limitations of the example.

An enamel part according to some embodiments of the present invention and a method of preparing the same are described below with reference to the accompanying drawings.

As shown in FIG. 1 , according to some embodiments of the present invention, a method for preparing an enamel component is obtained by sequentially obtaining a enamel component through a pretreatment step S10, a sneezing step S20, and a sintering step S30. The pretreatment step S10 includes :

S102, using a method of injecting gas into the powder spraying device, and performing powdering treatment on the powder spraying device;

S104, the spraying of the dusting device is performed by spraying the aqueous solution into the powder spraying device;

S106, the component base is hung on the dusting hanger, and the cleaning liquid is sprayed onto the component base to clean the component base;

In S108, the part substrate is dried by using a blowing method to the part base.

According to the preparation method of the enamel part provided by the above embodiment of the present invention, most of the enamel powder remaining on the dusting hopper in the previous production cycle can be blown down by the powder blasting method in the pretreatment process. Then, through the dusting and hanging tool cleaning process in the pre-treatment process, all the remaining enamel powder remaining on the dusting hanging device is washed down, thereby obtaining a clean, non-enamel powder residual powder hanging device, guaranteed in the next The enamel effect when using the dusting rack in the production cycle, avoiding impurities such as enamel powder remaining on the dusting rack, adversely affecting the adhesion of the enamel powder on the part substrate in the next production cycle, avoiding enamel explosion Porcelain, enamel bursting, enamel unevenness, de-porcelain and other undesirable phenomena, improve the quality of the enamel parts; through the part of the pre-treatment process of the substrate cleaning process, the surface of the parts of the substrate is cleaned, so that the surface of the part of the substrate without any dirt Or impurities, and then through the part substrate drying process in the pre-treatment process, the cleaning liquid on the part substrate is thoroughly dried, thereby obtaining a part substrate without any dirt, impurities or cleaning liquid residue, and the enamel powder is very easy during the sneezing process. It is well attached to the base of the parts, avoiding the occurrence of enamel-explosive porcelain, enamel bursting, enamel unevenness, de-porcelain and other undesirable phenomena. Parts of quality porcelain.

The pre-processing step S10 according to an embodiment of the present invention will be described below with reference to FIGS. 2A to 2D:

As shown in FIG. 2A, in the dusting and dusting step S102, a plurality of air guns 401 provided in the knocking cabinet 40 are used to inject gas into the powder spraying device 10, and a intermittent air jet method is employed, and the injection air pressure is 1.1. Pa ~ 1.65 Pa, the blown enamel powder is recovered into the recovery tank 402 in the knocking cabinet 40.

As shown in FIG. 2B, in the dusting squeegee cleaning step S104, a plurality of water guns 411 provided in the washing cabinet 41 are used to spray the aqueous solution to the dusting hopper 10, and the enamel is washed down by intermittent water spraying. The mixture of powder and water is recovered in a recovery tank 412 in the washing cabinet 41.

As shown in FIG. 2C, in the component base cleaning step S106, the cleaning liquid is sprayed onto the component base 20 by the plurality of cleaning guns 421 provided on the component cleaning line 42, and the opening of the cleaning gun 421 is selected in accordance with the size of the component substrate 20. number.

As shown in FIG. 2D, in the component base drying step S108, the plurality of air cylinders 431 provided on the component drying line 43 are blown to the component base 20, and the drying temperature on the component drying line 43 is 120 to 240 °C.

In an embodiment of the invention, the sneezing process S20 includes:

S202, using a oblique spray type spray gun, a direct injection type spray gun or a spray type spray gun to spray enamel powder on the appearance surface of the part base;

S204, spraying the enamel powder on the inner wall surface of the part body by using a oblique spray type spray gun, a direct injection type spray gun or a spray spray type spray gun;

S206, using a oblique spray gun, a direct injection spray gun or a spray gun to spray enamel powder on the joint between the adjacent wall surfaces of the part base.

As shown in FIG. 3, a schematic structural view of the inner wall surface of the component base 20 sprayed by the oblique spray type spray gun 50 is shown in the figure. The oblique spray type spray gun 50 is mounted on the mechanical arm 51, and the mechanical arm 51 drives the oblique spray type spray gun 50. The component base 20 is moved in the direction of the up and down arrows in the drawing.

In the above embodiment, the sneezing method of spraying the joint surface between the appearance surface, the inner wall surface and the adjacent wall surface of the part base body is adopted, which can effectively ensure the sneezing effect, avoid enamel explosion, enamel burst, enamel. Unevenness of thickness, de-porcelain and other undesirable phenomena, thus improving the quality of the enamel parts; it should be noted that according to the size and structure of the parts, the sneezing process according to the parts of the parts can be prepared, and each gun can be adjusted. Parameters such as the spray voltage, the amount of enamel paint, the distance between the spray gun and the part base, etc., to adjust the thickness of the enamel paint attached to the surface of the part base; and adjust the parts according to the size and structure of the actual part base The order of sneezing is performed at the joint between the design surface of the base body, the inner wall surface, and the adjacent wall surface.

In one embodiment of the present invention, as shown in FIG. 4, in the pre-treatment step S10 and the sneezing step S20, the dusting spreader 10 is driven by the transport chain 30 to move, thereby realizing the dusting spreader 10 to drive the component base 20 Moving, the moving speed of the transport chain 30 is from 2.5 m/min to 4.5 m/min, and the arrows in the figure indicate the transport direction of the transport chain 30.

In one embodiment of the present invention, as shown in FIGS. 5A to 5C, the sintering process S30 includes:

As shown in FIG. 5A and FIG. 5B, in the high-temperature sintering step S302, the part substrate 20 is hung on the sintering rack 60, and the sintering rack 60 is placed in the sintering furnace 62 through the conveying chain 61, and is set in the sintering furnace. The heating element 63 in 62 heats the part substrate 20 sprayed with the enamel powder, the temperature in the sintering furnace 62 is controlled to a low temperature zone and a high temperature zone, and the temperature in the low temperature zone is 200 ° C to 400 ° C, and the temperature in the high temperature zone Degree is 750 ° C ~ 900 ° C;

As shown in FIG. 5C, in the temperature lowering step S304, the component base 20 coated with the enamel powder is naturally cooled by the air cylinder 65 provided in the cooling box 64 to obtain an enamel part.

In the above embodiment, the internal temperature of the sintering furnace is divided into two types under the action of the heating element, and one region is a low temperature region having a temperature ranging from 200 ° C to 400 ° C, and the function is to preheat the part substrate. Without preheating, the matrix of the part is prone to severe deformation, and the other zone is a high temperature zone with a temperature range of 750 ° C to 900 ° C. The function is to dissolve the enamel powder under the action of high temperature and adhere to the surface of the part; After the high-temperature sintering process, the surface temperature is high. Therefore, when the parts pass through the cooling box, the natural wind under the sintering racks is used to naturally cool the part body, thereby lowering the temperature of the parts and preventing the operator from being burnt.

In one embodiment of the present invention, as shown in FIGS. 5A to 5C, in the sintering process, a plurality of part substrates 20 are hung on one sintering rack 60, and a plurality of parts bases 20 are arranged in parallel in the vertical direction.

Hanging a plurality of parts of the substrate on a single sintered rack can effectively increase the productivity and improve the production effect. Usually, a sintered rack adopts a structure of two layers above and below, that is, a sintered rack is suspended in parallel in the up and down direction. For the part base, if necessary, more than two parts of the base may be hung at one time according to requirements. Preferably, the speed of the transfer chain is generally 3.5 m/min, which may of course be determined according to the size of the actual part.

It should be noted that, as shown in FIG. 4, the pre-treatment step S10 and the sneezing step S20 are connected by one transport chain 30. As shown in FIG. 6, the sintering step S30 uses a separate transport chain 30, so from the sneezing process to In the sintering step, it is necessary to manually transport the parts to the transfer chain 30 of the sintering process, that is, to the sintering rack 60.

As shown in FIG. 6, after the sintering process S30 is completed, the inspection process S40 is performed to check whether the enamel parts have defects such as blasting, bursting, discoloration, etc. The specific inspection method is based on the enamel national standard, and the inspection environment needs to meet normal inspection conditions. And the inspection console can adjust the quantity, size and other parameters according to the actual situation.

An embodiment of another aspect of the present invention provides an enamel member (not shown) which is produced by the method for producing an enamel member according to any of the above embodiments.

The enamel member provided by the above embodiment of the present invention adopts the preparation method of the enamel member according to any of the above embodiments to form an enamel layer on the part substrate, because the dusting hanger is knocked during the pretreatment process. Powder treatment and cleaning treatment, and cleaning and drying of the parts of the substrate, effectively ensuring the cleanliness of the powder burrs and the parts of the parts, thus ensuring that the enamel powder adheres well to the parts of the parts during sneezing. To avoid the appearance of enamel blasting, enamel bursting, enamel unevenness, porcelain removal, etc., and improve the quality of enamel parts.

In some embodiments of the invention, the enamel component is a liner of a microwave oven or a liner of an electric oven. Of course, the enamel part may also be a liner of other cooking products, as long as it does not depart from the inventive concept of the present invention.

In summary, the preparation method of the enamel parts provided by the embodiments of the present invention, through the powder-washing treatment and the cleaning treatment of the powder-spraying hanger, and the cleaning and drying treatment of the parts of the parts, effectively ensuring the dust-spraying hanger And the cleanliness of the parts of the parts, so as to ensure that the enamel powder adheres well to the parts of the parts during the sneezing process, avoiding enamel blasting, enamel bursting, enamel unevenness, de-porcelain and other undesirable phenomena, and improving the enamel parts. Quality; by sneezing one by one on the appearance surface, inner wall surface and joint seam of the part base, effectively ensuring the sneezing effect, avoiding enamel blasting, enamel bursting, enamel thickness unevenness, de-porcelain and other undesirable phenomena; The sintering temperature in the process is controlled to effectively ensure the adhesion of the enamel powder on the part substrate, thereby further improving the enamel effect; and the preparation method of the enamel part provided by the above embodiment is simple and convenient to operate.

Unless otherwise specified or stated, the terms "connected", "mounted", and the like are to be understood broadly. For example, "connecting" may be a fixed connection, a detachable connection, or an integral connection, or an electrical connection; Directly connected, or indirectly through intermediate media. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the description of the present specification, it is to be understood that the orientation or positional relationship of the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, only for convenience. The present invention and its simplistic description are not to be construed as limiting or limiting the scope of the invention.

In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in the present invention. At least one embodiment or example. In the present specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A method for preparing an enamel member, characterized in that the part substrate is obtained by a pretreatment step, a sneezing step, and a sintering step, wherein the pretreatment step comprises:

Step 102: performing a powdering process on the powder spraying device by injecting a gas into the dusting device;

Step 104: performing a cleaning process on the dusting device by spraying the aqueous solution to the dusting device;

Step 106: Hanging the component base on the dusting rack, and spraying the cleaning liquid to the component base to clean the component base;

In step 108, the part substrate is dried by using a blowing method to the part base.
The method of producing an enamel member according to claim 1, wherein

In the step 102, a plurality of air guns disposed in the powder knocking cabinet are used to inject gas into the dusting rack, and the intermittent air jet method is used, and the jet air pressure is 1.1 Pa to 1.65 Pa.
The method of producing an enamel member according to claim 1 or 2, wherein

In the step 104, a plurality of water guns disposed in the washing cabinet are used to spray the aqueous solution to the dusting rack, and a batch water spraying method is adopted.
The method for producing an enamel member according to any one of claims 1 to 3, characterized in that

In the step 106, the cleaning liquid is sprayed onto the part substrate by using a plurality of cleaning guns provided on the part cleaning line, and the number of opening of the cleaning gun is selected according to the size of the part substrate.
The method for producing an enamel member according to any one of claims 1 to 4, characterized in that

In the step 108, the plurality of air cylinders provided on the component drying line are used to blow the component base, and the drying temperature of the component drying line is 120 to 240 °C.
The method for producing an enamel member according to any one of claims 1 to 5, wherein the sneezing process comprises:

Step 202, spraying a enamel powder onto the appearance surface of the part body by using a oblique spray type spray gun, a direct injection type spray gun or a spray type spray gun;

Step 204, using a oblique spray type spray gun, a direct injection type spray gun or a spray type spray gun to the part base body Spraying enamel powder on the inner wall;

In step 206, the enamel powder is sprayed onto the joint between the adjacent wall surfaces of the part substrate by using a oblique spray type spray gun, a direct injection type spray gun or a spray blow type spray gun.
The method of producing an enamel member according to claim 6, wherein

In the pretreatment step and the sneezing step, the dusting hopper is driven by a conveyor chain, and the moving speed of the conveyor chain is from 2.5 m/min to 4.5 m/min.
The method of producing an enamel member according to any one of claims 1 to 7, wherein the sintering step comprises:

Step 302, hanging the part substrate on the sintering rack, placing the sintering rack into the sintering furnace, the temperature in the sintering furnace is controlled to a low temperature zone and a high temperature zone, and the temperature of the low temperature zone is 200. °C ~ 400 ° C, the temperature in the high temperature zone is 750 ° C ~ 900 ° C;

In step 304, the part substrate is naturally cooled to obtain the enamel part.
The method of producing an enamel member according to claim 8, wherein

In the sintering step, a plurality of the component substrates are hung on one of the sintering racks, and a plurality of the component substrates are arranged in parallel in the up and down direction.
An enamel member produced by the method for producing an enamel member according to any one of claims 1 to 9.