CN111321409A - Enameled steel sheet and processing method thereof - Google Patents

Enameled steel sheet and processing method thereof Download PDF

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Publication number
CN111321409A
CN111321409A CN202010141721.XA CN202010141721A CN111321409A CN 111321409 A CN111321409 A CN 111321409A CN 202010141721 A CN202010141721 A CN 202010141721A CN 111321409 A CN111321409 A CN 111321409A
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parts
steel plate
plate body
steel sheet
steel
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赵兰兰
周冠男
谢宏志
李旭源
芦建平
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Beijing Yingherui Environmental Technology Co ltd
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Beijing Yingherui Environmental Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
    • C23D5/00—Coating with enamels or vitreous layers
    • C23D5/02—Coating with enamels or vitreous layers by wet methods
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
    • C23D11/00—Continuous processes; Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2207/00—Compositions specially applicable for the manufacture of vitreous enamels
    • C03C2207/04—Compositions specially applicable for the manufacture of vitreous enamels for steel

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

The invention discloses an enameled pressed steel and a processing method thereof, and relates to a pressed steel suitable for a high-strength bolted tank. The enameled pressed steel has the advantages of strong comprehensive performance, convenience in installation and low cost and the processing method thereof. The enameled pressed steel comprises a pressed steel body, the pressed steel body is a rectangular plate, punched holes are processed on the pressed steel body and are positioned on the periphery of the surface of the pressed steel body, the punched holes are respectively processed in a row on the upper side and the lower side of the pressed steel body, a plurality of rows are respectively processed on the left side and the right side of the pressed steel body, stepped notches are processed on the pressed steel body and are processed on the left upper corner and the right lower corner of the pressed steel body, the two stepped notches are centrosymmetric by taking the geometric center of the pressed steel body as the center, and a bottom coating and a surface coating are sprayed on the surface of the pressed steel body.

Description

Enameled steel sheet and processing method thereof
Technical Field
The invention relates to the technical field of steel plates, in particular to an enameled pressed steel suitable for a high-strength bolted tank and a process method thereof.
Background
The large tank used in the engineering can adopt a field anticorrosion construction mode in the assembly process before use, and for the field anticorrosion engineering of the carbon steel tank, the problems of poor stability of surface treatment and coating equipment, a plurality of artificial influence factors and great influence by the change of the surrounding environment exist in the construction field.
Compare in the carbon steel welding jar of anticorrosive construction in scene, enamel steel plate bolted connection jar is more practiced thrift the cost than the carbon steel welding jar of anticorrosive construction in scene, and work quality and efficiency also increase substantially, but when steel sheet intensity is not enough, can lead to the stability variation, inhomogeneous and the scheduling problem that peels off of enamel layer. In order to meet the practical application, the high-strength enameled pressed steel is improved in strength, flexibility, adhesion property, friction resistance and durability by optimizing and developing a formula and an advanced process mode matched with the formula, and the project has a great application prospect.
As for practical engineering, the enameled pressed steel is the most basic raw material, however, with the continuous research and development of domestic and foreign biogas engineering, the traditional enameled process is not enough to meet the requirements of bolted tanks of various raw material types, so that the optimization of the enamel formula and the improvement of the matched process and structure of the bolted tank of the high-strength enameled pressed steel are urgent, and the design of the large tank body at home is not perfect, especially 6000m3For example, the requirements of the spliced tank body on the strength, hardness and the like of the steel plate are strict, and the formula of the enamel is also improved and optimized.
Disclosure of Invention
The invention aims to provide an enameled pressed steel with strong comprehensive performance, convenient installation and low cost and a processing method thereof.
According to the technical scheme, the enameled pressed steel comprises a pressed steel body, the pressed steel body is a rectangular plate, punched holes are formed in the pressed steel body and are located on the periphery of the plate surface of the pressed steel body, the punched holes are formed in a row on the upper side and the lower side of the pressed steel body respectively, a plurality of rows of the punched holes are formed in the left side and the right side of the pressed steel body respectively, stepped notches are formed in the upper left corner and the lower right corner of the pressed steel body and are formed in the center symmetry of the two stepped notches with the geometric center of the pressed steel body as the center of symmetry, and a bottom coating and a surface coating are sprayed on the surface of the pressed steel body.
The enameled pressed steel of the invention, wherein the multiple rows of punched holes on the left and right sides of the steel plate body are staggered in the horizontal direction.
The enameled pressed steel is characterized in that the punched holes on the left side and the right side of the steel plate body are respectively arranged in two rows, and the first punched holes on the upper side and the lower side of the steel plate body are positioned on the unfilled corner part of the stepped unfilled corner.
The enameled pressed steel of the invention, wherein the punched holes on the left side and the right side of the steel plate body are respectively arranged in three rows, and half of the first punched hole and half of the second punched hole on the upper side and the lower side of the steel plate body are positioned at the unfilled corner part of the step-shaped unfilled corner.
The enameled pressed steel of the invention, wherein the punched holes on the left side and the right side of the steel plate body are respectively arranged in four rows, and the first punched hole and the second punched hole on the upper side and the lower side of the steel plate body are positioned on the unfilled corner part of the step-shaped unfilled corner.
The enamel steel plate of the invention, wherein the ground coat formula of the bottom coating is counted by mass parts, SiO210 to 20 parts of KAISi3O820 to 30 parts of Na2B4O7·10H225-35 parts of O and Na2CO35 to 9 parts of NaNO31 to 30 parts of CaF23-8 parts of CoO, 0.2-1 part of NiO, 5-25 parts of NiO and 1-5 parts of MnO.
The enamel steel plate of the invention, wherein the overglaze formula of the face coating is counted by mass parts, TiO210-30 parts of ash ground glaze and 10-30 parts of ash ground glaze; 10-30 parts of white ground glaze, CaCO35 to 25 parts of Sb2O30.1-20 parts of NiO, 5-25 parts of Na2B4O7·10H2O2-8 parts, NaNO21 to 3 parts of Na2CO31 to 5 parts of SiO210 to 30 parts of KAISi3O820-30 parts.
The invention provides another technical scheme, namely a processing method of an enameled pressed steel, which comprises the following steps:
s10, selecting a raw material of the steel plate body, wherein the raw material requires that the yield strength is 360-385 MPa, the tensile strength is 420-430 MPa, the hot rolled coil is taken as a main material, and the roughness is ▽ 12.5.5;
s20, performing surface punching pretreatment on the steel plate body, wherein the inner diameter of each punched hole is 13.5-14 mm, the punched holes are distributed around the steel plate body, the punched holes on the upper side and the lower side are in a row, and the punched holes on the left side and the right side are processed into a plurality of rows;
s30, performing corner cutting treatment on the steel plate body, and cutting the upper left corner and the lower right corner of the steel plate body to obtain stepped unfilled corners which are centrosymmetric and have the same shape with the center of the steel plate body;
s40, performing shot blasting treatment on the steel plate body;
s50, carrying out acid washing treatment on the steel plate body, washing acid liquor with cold water after acid washing, and washing the acid liquor with hot water;
s60, coating the steel plate body, spraying the bottom coating, enameling and burning for the first time, spraying the face coating, enameling and burning for the second time, and then hanging and drying by a cableway.
The method for processing the enameled pressed steel according to the present invention, wherein in step S60, the formulation of the ground coat of the bottom coating is calculated by mass parts of SiO210 to 20 parts of KAISi3O820 to 30 parts of Na2B4O7·10H225-35 parts of O and Na2CO35 to 9 parts of NaNO31 to 30 parts of CaF23-8 parts of CoO, 0.2-1 part of NiO, 5-25 parts of NiO and 1-5 parts of MnO, wherein in the mixing process, all the raw materials are weighed and poured into a container, water with the corresponding proportion is added, and mechanical stirring is continuously carried out for 24 hours, wherein the material-water ratio is 1: 1.5.
The method for processing the enameled pressed steel according to the present invention, wherein in step S60, the overglaze formula of the face coating is TiO in parts by mass210-30 parts of ash ground glaze and 10-30 parts of ash ground glaze; 10-30 parts of white ground glaze, CaCO35 to 25 parts of Sb2O30.1-20 parts of NiO, 5-25 parts of Na2B4O7·10H2O2-8 parts, NaNO21 to 3 parts of Na2CO31 to 5 parts of SiO210 to 30 parts of KAISi3O820-30 parts of the raw materials are put into a container, added with water in a corresponding proportion and mechanically stirred for 1-2 hours, wherein the ratio of the materials to the water is 1: 1.5.
The enameled pressed steel and the processing method thereof are different from the prior art in that a plurality of punched holes are processed on the enameled pressed steel, and a plurality of pressed steel plates are assembled into a tank body in a bolt connection mode. In the processing process of the steel plate in a factory, the coating process is finished, the trouble of carrying out anticorrosion construction on site after the tank body is assembled is avoided, the assembly efficiency of the tank body is higher, and the stability of the steel plate is better. The stepped unfilled corner processed on the surface of the steel plate facilitates the installation of the steel plates, and the assembled steel plates are positioned on the same plane, so that the overall strength and hardness of the tank body are enhanced, the use safety of the tank body is improved, and the service life is prolonged. The two layers of coatings sprayed on the surface of the steel plate have high density, can enhance the oxidation resistance and surface fineness of the surface of the steel plate, and simultaneously improve the qualification rate of enamel electric spark voltage detection.
The processing method of the enameled pressed steel of the invention enables the body of the pressed steel to meet 6000m through the processing of the steps of punching, chamfering, shot blasting, acid pickling, spraying and the like3The assembly requirement of the assembled tank is met, and the coating formula in the spraying process is improved, so that the surface performance of the steel plate is further enhanced, the assembled tank can meet the high-difficulty assembly requirement of a large-sized tank body, and the service life of the assembled tank body is prolonged.
The enameled pressed steel and the method for manufacturing the same according to the present invention will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view showing the structure of example 1 of a enameled steel sheet according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view showing the structure of example 2 of the enameled pressed steel sheet according to the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 2 at B;
FIG. 5 is a schematic view showing the structure of example 3 of the enameled pressed steel sheet according to the present invention;
fig. 6 is a partially enlarged view at C in fig. 3.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
As shown in figure 1, the enameled pressed steel comprises a pressed steel body, wherein the pressed steel body adopts a hot rolled coil of SRT480 type supplied by a first steel group as a raw material, the pressed steel body is processed into a rectangular plate, the size of the rectangular plate is processed according to actual requirements, and the basic parameters of the pressed steel body are that the length is 2500-5000 mm, the width is 600-1200 mm, the thickness is 3-13 mm, the yield strength is 360-385 MPa, the tensile strength is 420-430 MPa, and the roughness is ▽ 12.5.5.
The steel plate body is provided with a punched hole, and the inner diameter of the punched hole is 13.5-14 mm. The punching equipment adopts a TP50 numerical control punch press produced by Qingdao Amada numerical control equipment limited company and adopts a laser cutting method to punch. The punched holes are located on the periphery of the plate surface of the steel plate body, wherein one row of punched holes are respectively processed on the upper side and the lower side of the steel plate body, a plurality of rows of punched holes are respectively processed on the left side and the right side of the steel plate body, and the plurality of rows of punched holes are arranged in a staggered mode in the horizontal direction. The punching holes arranged in multiple rows in a staggered mode can enhance the connection strength of the steel plates during installation, and stress concentration is avoided. In this embodiment, there are two rows of punched holes on the left and right sides of the steel plate body.
The steel plate body is provided with step-shaped unfilled corners, the step-shaped unfilled corners are processed at the upper left corner and the lower right corner of the steel plate body, and the two step-shaped unfilled corners are centrosymmetric by taking the geometric center of the steel plate body as a symmetric center. The step-shaped unfilled corner is cut by using a LEAD-3015 laser cutting machine of Suzhou LEAD laser technology Limited, and the size of the cut corner is determined according to the size of the bolted connection tank.
When the steel plates are assembled into the tank body, a connecting joint is formed at the joint of every four steel plates. When every adjacent four boards are assembled, it needs to be guaranteed that four board splicing positions have three steel plates at most to be overlapped, wherein the steel plate at the lower left corner and the steel plate at the upper right corner are installed in a diagonal mode, the steel plate at the upper left corner and the steel plate at the lower right corner can be conveniently installed due to the notch-type notches, two connected stepped notches on the same connecting node are meshed with each other, and the steel plates at the diagonal positions are located on the same plane when the installation is guaranteed.
The surface of the steel plate body is sprayed with a bottom coating and a surface coating, and the coatings are sprayed by adopting a dry powder electrostatic spraying technology.
Taking the stepped unfilled corner at the lower left corner as an example, as shown in fig. 2, a hatching line is marked in the drawing, the stepped unfilled corner is processed at the position of the lower left corner of the steel plate body, and the unfilled corner part comprises a first punched hole in the lower punched holes.
Example 2
The present embodiment is different from embodiment 1 in that: as shown in fig. 3, the punched holes on the left and right sides of the steel plate body are arranged in three rows. Taking the stepped unfilled corner at the lower left corner as an example, as shown in fig. 4, a hatching line is marked in the drawing, the stepped unfilled corner is processed at the position of the lower left corner of the steel plate body, and the unfilled corner part comprises a half of the first punched hole and the second punched hole in the lower punched holes.
Example 3
The present embodiment is different from embodiment 1 in that: as shown in fig. 5, the punched holes on the left and right sides of the steel plate body are arranged in four rows. Taking the stepped unfilled corner at the lower left corner as an example, as shown in fig. 6, a hatching line is marked in the drawing, the stepped unfilled corner is processed at the position of the lower left corner of the steel plate body, and the unfilled corner part comprises a first punched hole and a second punched hole in the lower punched holes.
The enameled pressed steel is provided with a plurality of punched holes, and a plurality of steel plates are assembled into a tank body in a bolt connection mode. In the processing process of the steel plate in a factory, the coating process is finished, the trouble of carrying out anticorrosion construction on site after the tank body is assembled is avoided, the assembly efficiency of the tank body is higher, and the stability of the steel plate is better. The stepped unfilled corner processed on the surface of the steel plate facilitates the installation of the steel plates, and the assembled steel plates are positioned on the same plane, so that the overall strength and hardness of the tank body are enhanced, the use safety of the tank body is improved, and the service life is prolonged. The two layers of coatings sprayed on the surface of the steel plate have high density, can enhance the oxidation resistance and surface fineness of the surface of the steel plate, and simultaneously improve the qualification rate of enamel electric spark voltage detection.
In examples 1 to 3, the thickness and the number of the rows of holes of the steel plate are different due to the different design sizes of the tank bodies, the different cutting angles are aimed at improving the bonding property between the enamel plates, and the upper left and lower right are distributed in a diagonal manner, so that the shearing force of the bolts is reduced for the enamel tank bodies as a whole, the service life of the bolts is prolonged, and the stability of the tank bodies is enhanced.
Example 4
The enameled pressed steel of the invention comprises the following steps when in production:
s10, selecting a raw material of a steel plate body, wherein the raw material requires a yield strength of 360-385 MPa and a tensile strength of 420-430 MPa, mainly uses a hot rolled coil with a roughness of ▽ 12.5.5, preferably a SRT480 type coil of a first steel group, and processes the coil into the steel plate body with a proper size, wherein the general length is 2500-5000 mm, the width is 600-1200 mm, and the thickness is 3-13 mm;
s20, performing surface punching pretreatment on the steel plate body, wherein the punching adopts a laser cutting method of a numerical control machine tool, the inner diameter of the punching is 13.5-14 mm, the punching is distributed around the steel plate body, the punching on the upper side and the lower side is one row, and the punching on the left side and the right side is processed into a plurality of rows;
s30, performing corner cutting treatment on the steel plate body, and cutting the upper left corner and the lower right corner of the steel plate body by using a laser cutting machine to obtain stepped unfilled corners which are centrosymmetric with the center of the steel plate body and have the same shape;
s40, performing shot blasting treatment on the steel plate body, and dividing the cleaning machine into a cleaning chamber, a conveying roller way, a lifter, a separator and the like by adopting a JC06915 roller way through type shot blasting cleaning machine produced by Qingdao Jichuan mechanical manufacturing Limited. One kilogram of steel shots are used for each steel plate of the machine, and the average is 6 shots/hour;
s50, carrying out acid washing treatment on the steel plate body, transporting the steel plate to a acid washing tank by a polishing machine through a cableway, washing acid liquor with cold water after acid washing, and then washing the acid liquor with hot water, wherein the temperature difference between the cold water and the hot water is not more than 30 ℃, the washing time of the cold water and the hot water is 1min respectively, and the average washing time is every 6 pieces/hour.
S60, coating the steel plate body, adopting a dry powder electrostatic spraying technology, firstly spraying a bottom coating, carrying out primary enameling firing, then spraying a face coating, carrying out secondary enameling firing, and then hanging and airing through a cableway, wherein the enameling firing temperature is 860 ℃, the enameling firing is carried out according to the requirements of different plate thicknesses (3mm-12mm), and the time is different from 5min to 30 min;
wherein the ground coat formula of the bottom coating is counted by mass parts, SiO210 to 20 parts of KAISi3O820 to 30 parts of Na2B4O7·10H225-35 parts of O and Na2CO35 to 9 parts of NaNO31 to 30 parts of CaF23-8 parts of CoO, 0.2-1 part of NiO, 5-25 parts of NiO and 1-5 parts of MnO, wherein quartz, feldspar and the like are used as main raw materials, in the mixing process, the raw materials are weighed and poured into a container without adding and stirring in sequence, water with the corresponding proportion is added, and mechanical stirring is continuously carried out for 24 hours, wherein the material-water ratio is 1: 1.5;
wherein the overglaze formula of the face coating is TiO in parts by mass210-30 parts of ash ground glaze and 10-30 parts of ash ground glaze; 10-30 parts of white ground glaze, CaCO35 to 25 parts of Sb2O30.1-20 parts of NiO, 5-25 parts of Na2B4O7·10H2O2-8 parts, NaNO21 to 3 parts of Na2CO31 to 5 parts of SiO210 to 30 parts of KAISi3O820-30 parts of the raw materials are put into a container, added with water in a corresponding proportion and mechanically stirred for 1-2 hours.
In this example, the formulation of the primer for the bottom coating, in parts by mass, is SiO210 parts of KAISi3O820 parts of Na2B4O7·10H2O25 parts, Na2CO35 parts of NaNO31 part of CaF23 parts of CoO, 0.2 part of NiO, 5 parts of NiO and 1 part of MnO, weighing all the raw materials, pouring the weighed raw materials into a container, adding water according to a corresponding proportion, and continuously stirring the mixture for 24 hours, wherein the ratio of the raw materials to the water is 1: 1.5.
Formula of overglaze for face coating, in parts by mass, TiO210 parts of ash ground glaze 10 parts; 10 portions of white ground coat, CaCO35 parts of Sb2O30.1 part, NiO5 parts and Na2B4O7·10H2O2 part, NaNO21 part of Na2CO31 part of SiO210 parts of KAISi3O820 parts, putting the raw materials into a container, adding water in a corresponding proportion, and mechanically stirring for 1 hour.
Example 5
This embodiment is different from embodiment 4 in that: the ground glaze formula of the bottom coating is recorded by mass parts of SiO215 parts of KAISI3O825 parts of Na2B4O7·10H2O30 parts, Na2CO37 parts of NaNO315 parts of CaF25 parts of CoO, 0.6 part of CoO, 15 parts of NiO and 3 parts of MnO, wherein quartz, feldspar and the like are used as main raw materials, and in the mixing process, the raw materials are weighed and poured into a container without being added and stirred sequentially, and water with the corresponding proportion is added for continuous 24 hours for mechanical stirring.
Formula of overglaze for face coating, in parts by mass, TiO220 parts of ash ground glaze 20 parts; 20 portions of white ground coat, CaCO318 parts of Sb2O310 parts of NiO, 18 parts of Na2B4O7·10H2O5 parts, NaNO22 parts of Na2CO33 parts of SiO220 parts of KAISi3O825 portions, putting the raw materials into a container, adding water with corresponding proportion, and mechanically stirring for 1.5 hours.
Example 6
This embodiment is different from embodiment 4 in that: the ground glaze formula of the bottom coating is recorded by mass parts of SiO220 parts of KAISi3O830 parts of Na2B4O7·10H2O35 parts, Na2CO39 parts of NaNO330 parts of CaF28 parts of CoO 1 parts, NiO25 parts and MnO 5 parts, weighing all the raw materials, pouring the weighed raw materials into a container, adding water according to the corresponding proportion, and continuously mechanically stirring for 24 hours.
Formula of overglaze for face coating, in parts by mass, TiO230 parts of ash ground glaze; 30 portions of white ground coat, CaCO325 parts of Sb2O320 parts of NiO, 25 parts of Na2B4O7·10H2O8 parts, NaNO23 parts of Na2CO35 parts of SiO230 parts of KAISI3O830 parts of the raw materials are put into a container, added with water in a corresponding proportion and mechanically stirred for 2 hours.
And (3) performance verification: the following tests were conducted on the above examples 4 to 6, and the test indexes were respectively the light loss level, the foaming level, the peeling level, the discoloration level, the rust point, and the yield of the spark voltage test. The verification methods are all the existing verification methods, and the verification results are shown in the following table.
Figure BDA0002399307640000091
The processing method of the enameled pressed steel of the invention enables the body of the pressed steel to meet 6000m through the processing of the steps of punching, chamfering, shot blasting, acid pickling, spraying and the like3The assembly requirement of the assembled tank is met, and the coating formula in the spraying process is improved, so that the surface performance of the steel plate is further enhanced, the assembled tank can meet the high-difficulty assembly requirement of a large-sized tank body, and the service life of the assembled tank body is prolonged.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (10)

1. A enameled steel sheet, characterized in that: including the steel sheet body, the steel sheet body is the rectangular plate, and processing has punched a hole on the steel sheet body, and it is located around the steel sheet body face to punch a hole, it has one row to punch a hole respectively to process in the upper and lower both sides of steel sheet body, and it has the multirow to process respectively in the left and right sides of steel sheet body, and processing has the notch unfilled corner on the steel sheet body, and notch unfilled corner processing is in the upper left corner and the lower right corner of steel sheet body, and two notch unfilled corners use the geometric centre of steel sheet body to be central symmetry as the center of symmetry, and the surface coating of steel sheet body has bottom coating and face coating.
2. The enameled steel sheet according to claim 1, wherein: the multi-row punching holes on the left side and the right side of the steel plate body are arranged in a staggered mode in the horizontal direction.
3. Enamelled steel sheet according to claim 1 or 2, characterized in that: the punched holes on the left side and the right side of the steel plate body are respectively two rows, and the first punched holes on the upper side and the lower side of the steel plate body are located on the unfilled corner part of the stepped unfilled corner.
4. Enamelled steel sheet according to claim 1 or 2, characterized in that: the punching holes on the left side and the right side of the steel plate body are respectively arranged in three rows, and half of the first punching hole and the second punching hole on the upper side and the lower side of the steel plate body are located on the unfilled corner part of the stepped unfilled corner.
5. Enamelled steel sheet according to claim 1 or 2, characterized in that: the punching holes on the left side and the right side of the steel plate body are respectively arranged in four rows, and the first punching hole and the second punching hole on the upper side and the lower side of the steel plate body are located on the unfilled corner part of the stepped unfilled corner.
6. The enameled steel sheet according to claim 1, wherein: the ground glaze formula of the bottom coating is recorded by mass parts of SiO210 to 20 parts of KAISi3O820 to 30 parts of Na2B4O7·10H225-35 parts of O and Na2CO35 to 9 parts of NaNO31 to 30 parts of CaF23-8 parts of CoO, 0.2-1 part of NiO, 5-25 parts of NiO and 1-5 parts of MnO.
7. The enameled steel sheet according to claim 1, wherein: the surface glaze formula of the face coating is counted by mass parts, and TiO210-30 parts of ash ground glaze and 10-30 parts of ash ground glaze; 10-30 parts of white base glaze，CaCO35 to 25 parts of Sb2O30.1-20 parts of NiO, 5-25 parts of Na2B4O7·10H2O2-8 parts, NaNO21 to 3 parts of Na2CO31 to 5 parts of SiO210 to 30 parts of KAISi3O820-30 parts.
8. A processing method of an enameled pressed steel is characterized in that: the method comprises the following steps:
s10, selecting a raw material of the steel plate body, wherein the raw material requires that the yield strength is 360-385 MPa, the tensile strength is 420-430 MPa, the hot rolled coil is taken as a main material, and the roughness is ▽ 12.5.5;
s20, performing surface punching pretreatment on the steel plate body, wherein the inner diameter of each punched hole is 13.5-14 mm, the punched holes are distributed around the steel plate body, the punched holes on the upper side and the lower side are in a row, and the punched holes on the left side and the right side are processed into a plurality of rows;
s30, performing corner cutting treatment on the steel plate body, and cutting the upper left corner and the lower right corner of the steel plate body to obtain stepped unfilled corners which are centrosymmetric and have the same shape with the center of the steel plate body;
s40, performing shot blasting treatment on the steel plate body;
s50, carrying out acid washing treatment on the steel plate body, washing acid liquor with cold water after acid washing, and washing the acid liquor with hot water;
s60, coating the steel plate body, spraying the bottom coating, enameling and burning for the first time, spraying the face coating, enameling and burning for the second time, and then hanging and drying by a cableway.
9. The process of claim 8, wherein: in step S60, the primer formulation of the base coat, in parts by mass, is SiO210 to 20 parts of KAISi3O820 to 30 parts of Na2B4O7·10H225-35 parts of O and Na2CO35 to 9 parts of NaNO31 to 30 parts of CaF23-8 parts of CoO, 0.2-1 part of NiO, 5-25 parts of NiO and 1-5 parts of MnO in the mixing processWeighing all the raw materials, pouring the raw materials into a container, adding water according to the corresponding proportion, and continuously mechanically stirring for 24 hours, wherein the ratio of the raw materials to the water is 1: 1.5.
10. The process of claim 8, wherein: in step S60, the overglaze formulation of the topcoat layer, in parts by mass, TiO210-30 parts of ash ground glaze and 10-30 parts of ash ground glaze; 10-30 parts of white ground glaze, CaCO35 to 25 parts of Sb2O30.1-20 parts of NiO, 5-25 parts of Na2B4O7·10H2O2-8 parts, NaNO21 to 3 parts of Na2CO31 to 5 parts of SiO210 to 30 parts of KAISi3O820-30 parts of the raw materials are put into a container, added with water in a corresponding proportion and mechanically stirred for 1-2 hours, wherein the ratio of the materials to the water is 1: 1.5.
CN202010141721.XA 2020-03-04 2020-03-04 Enameled steel sheet and processing method thereof Pending CN111321409A (en)

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CN103568408A (en) * 2012-08-06 2014-02-12 杭州清城能源环保工程有限公司 Enameled pressed steel for anaerobic biological reaction assembled tank and manufacturing method of enameled pressed steel
CN103833420A (en) * 2014-01-16 2014-06-04 湖南新世纪陶瓷有限公司 Manufacturing method of antique black colored glaze and formula thereof

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