CN113334021B - Steel plate surface self-joint-repairing anti-corrosion treatment process - Google Patents
Steel plate surface self-joint-repairing anti-corrosion treatment process Download PDFInfo
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- CN113334021B CN113334021B CN202110430597.3A CN202110430597A CN113334021B CN 113334021 B CN113334021 B CN 113334021B CN 202110430597 A CN202110430597 A CN 202110430597A CN 113334021 B CN113334021 B CN 113334021B
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- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
Abstract
The invention discloses a steel plate surface self-crack-filling anticorrosion treatment process, which belongs to the field of steel surface treatment, and the steel plate surface self-crack-filling anticorrosion treatment process can longitudinally span the whole anticorrosion layer through downward-permeating crack-filling microspheres laid on the surface of a steel plate under the operation of fractional pouring, so that a supporting effect is formed in the anticorrosion layer, the strength of the anticorrosion layer is effectively improved, and the situation that the anticorrosion layer is bulged and falls off is reduced.
Description
Technical Field
The invention relates to the field of steel surface treatment, in particular to a steel plate surface self-joint-filling anticorrosion treatment process.
Background
The steel plate is a flat steel plate which is cast by molten steel, cooled and pressed, is flat and rectangular, and can be directly rolled or cut by a wide steel belt. The steel plate is divided into the following thickness, thin steel plate is less than 4 mm (the thinnest is 0.2 mm), medium steel plate is 4-60 mm, and super steel plate is 60-115 mm.
The width of the thin plate is 500-1500 mm; the width of the thick film is 600-3000 mm. The thin plates are classified according to steel types, such as common steel, high-quality steel, alloy steel, spring steel, stainless steel, tool steel, heat-resistant steel, bearing steel, silicon steel, industrial pure iron thin plates and the like; according to the professional application, the plate can be used for oil tanks, enamel plates, bulletproof plates and the like; the coating layer is divided into a galvanized sheet, a tinned sheet, a lead-plated sheet, a plastic composite steel plate and the like.
In the production process of the steel plate, local cracking is often caused by the problems of uneven stress and the like, the crack not only easily affects the strength of the steel plate, but also easily causes the problems of bulging, peeling, falling and the like of an anticorrosive coating at the position, so that the cracked position needs to be repaired before the steel plate is put into use, and then the anticorrosive treatment is carried out, the two steps are separated, and when the steel plate is repaired, the determination and the repair of the crack position need to consume longer time, so that the surface treatment efficiency is lower.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a steel plate surface self-joint-filling anticorrosion treatment process, which is characterized in that a lower-seepage joint-filling microsphere is laid on the surface of a steel plate and matched with the operation of pouring anticorrosion materials in a graded manner, so that the lower-seepage joint-filling microsphere longitudinally spans the whole anticorrosion layer and can form a supporting effect in the anticorrosion layer, thereby effectively improving the strength of the anticorrosion layer and preventing the anticorrosion layer from being easily swelled and falling.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A steel plate surface self-mending joint anticorrosion treatment process comprises the following steps:
s1, firstly, carrying out oil and rust removal treatment on the surface of a steel plate, and then carrying out drying treatment;
s2, uniformly spreading a layer of infiltration mending seam microspheres on the surface of the steel plate, and then guiding the steel plate below the steel plate through a magnetic plate to enable the infiltration mending seam microspheres to stand;
s3, uniformly heating the steel plate to melt the lower end part of the infiltration crack-repairing microspheres, wherein the magnetic crack-repairing glue inside the infiltration crack-repairing microspheres overflows and disperses on the surface of the steel plate and permeates into cracks, so that a crack-repairing layer is formed on the surface of the steel plate;
s4, cooling to solidify the melted part at the lower end part of the infiltration joint-filling microsphere, so that the infiltration joint-filling microsphere is integrally positioned and vertically erected on the surface of the steel plate;
and S5, pouring the anticorrosive material above the lower penetration joint microsphere in a grading manner, so that an anticorrosive layer consisting of an anticorrosive inner layer and an anticorrosive surface layer is sequentially formed on the surface of the steel plate from bottom to top.
Furthermore, the heating temperature in the step S3 is not higher than 100 ℃, the final temperature of the cooling treatment in the step S4 is not lower than 5 ℃, the cooling speed is 3-5 ℃/S, and the rapid cooling is convenient for accelerating the positioning and standing of the infiltration joint repairing microspheres, so that the integral corrosion prevention efficiency of the steel plate is effectively accelerated.
Furthermore, the upper surface of anticorrosive inlayer is located the below of infiltration crack filling microballon upper end, the anticorrosive top layer covers infiltration crack filling microballon completely, makes the infiltration crack filling microballon indulge and strides whole anticorrosive coating, can form the supporting role in the anticorrosive coating to effectively improve its intensity, make its difficult condition that takes place to swell and drop take place.
Further, the step S5 of pouring separately includes the following specific steps:
s51, pouring a corrosion-resistant material for the first time to cover the lower end parts of the infiltration joint-repairing microspheres, keeping the upper end parts positioned on the outer side, and forming various rows of corrosion-resistant inner layers after solidification and shaping, wherein the corrosion-resistant inner layers can position the infiltration joint-repairing microspheres, so that the stability of the infiltration joint-repairing microspheres is higher, and the friction in the next step is facilitated;
s52, the upper end parts of the downward-seepage crack-repairing microspheres are rubbed to damage the upper end parts, then the steel plate is uniformly heated again to soften and slightly melt the crack-repairing layer between the steel plate and the anti-corrosion inner layer, and gas in the steel plate overflows upwards when being heated, so that gaps are not easy to exist in the crack-repairing layer between the anti-corrosion inner layer and the steel plate due to the gas, the strength of the steel plate is effectively improved, meanwhile, the steel plate and the anti-corrosion layer are not easy to bulge due to the air, and the peeling and falling of the anti-corrosion layer are further reduced;
s53, pouring the anticorrosive material for the first time, covering the upper end parts of the infiltration joint filling microspheres, and airing and shaping to form an anticorrosive surface layer.
Further, before the steel plate is reheated in the step S52, the steel plate is in a negative pressure environment, so that when the gap filling layer is softened or melted due to reheating, the overflow of air inside the gap filling layer is accelerated, and the step S53 is also performed in the negative pressure environment, so that the situation that outside air enters the liquid storage cavity along the air guide rod during secondary pouring is effectively avoided.
Furthermore, the lower seepage crack repairing microsphere comprises an outer bearing thick shell and a lower pre-melting thin shell fixedly connected to the lower end of the outer bearing thick shell, a liquid storage cavity is formed between the outer bearing thick shell and the lower pre-melting thin shell, the magnetic glue repairing liquid is filled in the liquid storage cavity, an air guide rod is fixedly connected to the inside of the outer bearing thick shell and communicated with the liquid storage cavity, and an outer sealing ball is fixedly connected to the upper end of the air guide rod.
Furthermore, the outer bearing thick shell is made of high-hardness materials, so that the outer bearing thick shell has strong bearing performance, when the steel plate is put into use after being processed, the inner outer bearing thick shell is not easy to collapse under the action of accidental impact force, the strength of an anticorrosive layer on the surface is high, and the lower pre-melting thin shell is made of low-melting-point hot-melt materials, so that the lower pre-melting thin shell is conveniently heated and melted to release the inner magnetic glue supplementing liquid.
Furthermore, the outer packaging ball is made of sealing rubber materials, the thickness of the outer packaging ball is 0.5-1.5mm, the hardness of the outer packaging ball is low, the outer packaging ball is convenient to break when friction operation is carried out, meanwhile, the lower seepage gap-filling microsphere part at the crack on the surface of the steel plate is sunk into the crack, the outer packaging ball at the upper end of the outer packaging ball is lower than other outer packaging balls, the outer packaging ball at the large crack is not easy to damage during friction, the outer packaging ball expands when heating is caused, the crack is convenient to remind workers of the existence of the crack, and therefore the workers can reinforce the fixed-point anticorrosive coating at the position.
Furthermore, the central point of the liquid storage cavity is located at the position, which is eccentric to the center of the outer bearing thick shell, of the lower pre-melting thin shell, the thickness of the lower pre-melting thin shell is not more than 2mm, the whole center of gravity of the lower seepage crack-repairing microsphere is close to the lower pre-melting thin shell, and the lower pre-melting thin shell is downwards contacted with the steel plate when being spread.
Furthermore, the magnetic mending glue solution comprises magnetic powder, steel mending liquid and red wax sheet powder, the magnetic mending glue solution, the steel mending liquid and the red wax sheet powder are mixed according to a volume ratio of 1.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) This scheme is through the infiltration crack filling microsphere of laying on the steel sheet surface, under the pouring operation of gradation, can indulge and stride whole anticorrosive coating, and then form the supporting role in the anticorrosive coating, effectively improve its intensity, reduce the anticorrosive coating and take place the condition that the swell drops, simultaneously before pouring anticorrosive material, under the heating effect, the magnetism glue filling liquid in the infiltration crack filling microsphere is in steel sheet surface dispersion and infiltration crack, and then form the crack filling layer on the steel sheet surface, realize fissured self-repairing, and under the negative pressure effect, can effectively get rid of the intraformational gas of crack filling and make and be difficult for because of the air emergence swell phenomenon between steel sheet and this anticorrosive coating, further reduce the anticorrosive coating and take place the condition that the anticorrosive coating skinned and drop, simultaneously under the effect of outer envelope ball, be convenient for remind the staff this department to have the crack, thereby make the staff carry out the anticorrosive coating reinforcement of fixed point to this department.
(2) The heating temperature in the step S3 is not higher than 100 ℃, the final temperature of the cooling treatment in the step S4 is not lower than 5 ℃, the cooling speed is 3-5 ℃/S, and the rapid cooling is convenient for accelerating the positioning and standing of the infiltration joint repairing microspheres, so that the integral corrosion prevention efficiency of the steel plate is effectively accelerated.
(3) The upper surface of the anti-corrosion inner layer is located below the upper end part of the infiltration joint-filling microsphere, and the anti-corrosion surface layer completely covers the infiltration joint-filling microsphere, so that the infiltration joint-filling microsphere longitudinally spans the whole anti-corrosion layer, and can form a supporting effect in the anti-corrosion layer, thereby effectively improving the strength of the anti-corrosion layer and preventing the anti-corrosion layer from being easily swelled.
(4) Pouring the anticorrosive material for the first time to cover the lower end parts of the infiltration crack repairing microspheres and simultaneously keep the upper end parts positioned on the outer side, and forming various anticorrosive inner layers after solidification and shaping, wherein the anticorrosive inner layers can position the infiltration crack repairing microspheres, so that the stability of the infiltration crack repairing microspheres is higher, and the infiltration crack repairing microspheres are convenient for friction in the next step;
(5) The upper end parts of the downward-seepage crack-repairing microspheres are rubbed to damage the upper end parts, then the steel plate is uniformly heated again to soften and slightly melt the crack-repairing layer between the steel plate and the anti-corrosion inner layer, and gas in the steel plate is heated to overflow upwards at the moment, so that a gap is not easy to exist in the crack-repairing layer between the anti-corrosion inner layer and the steel plate due to the gas, the strength of the steel plate is effectively improved, meanwhile, the steel plate and the anti-corrosion layer are not easy to bulge due to the air, and the peeling and falling of the anti-corrosion layer are further reduced;
(6) Before the steel plate is reheated in step S52, the steel plate is placed in a negative pressure environment, so that when the gap filling layer is softened or melted due to reheating, the overflow of air inside the gap filling layer is accelerated, and step S53 is also performed in the negative pressure environment, so that the situation that outside air enters the liquid storage cavity along the air guide rod during secondary pouring is effectively avoided.
(7) The outer bearing thick shell is made of high-hardness materials, so that the outer bearing thick shell has strong bearing performance, when the steel plate is put into use after being processed, the inner outer bearing thick shell is not easy to collapse under the action of accidental impact force, the strength of an anticorrosive layer on the surface is high, and the lower pre-melting thin shell is made of low-melting-point hot melting materials, so that the lower pre-melting thin shell is conveniently heated and melted to release the inner magnetic glue supplementing liquid.
(8) The outer packaging ball is made of sealing rubber materials, the thickness of the outer packaging ball is 0.5-1.5mm, the hardness of the outer packaging ball is low, the outer packaging ball is convenient to break when friction operation is carried out, meanwhile, the lower seepage crack repairing microspheres at the crack on the surface of the steel plate are partially sunk into the crack, the outer packaging ball at the upper end of the outer packaging ball is lower than other outer packaging balls, the outer packaging ball at the large crack is not easy to damage during friction, the crack is convenient to remind workers of the crack at the crack, and therefore the workers can reinforce the fixed-point anticorrosive coating at the crack.
(9) The central point of the liquid storage cavity is positioned at the position of the outer bearing thick shell under the center of the sphere, and the thickness of the lower pre-melting thin shell is not more than 2mm, so that the whole gravity center of the lower infiltration crack filling microsphere is close to the lower pre-melting thin shell, and the lower pre-melting thin shell is downwards contacted with a steel plate when being spread.
(10) The magnetic repairing glue solution comprises magnetic powder, steel repairing liquid and red wax sheet powder, the magnetic powder, the steel repairing liquid and the red wax sheet powder are mixed according to the volume ratio of 1.
Drawings
FIG. 1 is a schematic view of the main flow structure of the present invention;
FIG. 2 is a schematic structural view of the front side of the infiltration mending crack microsphere of the present invention;
FIG. 3 is a schematic structural view of the lower end of the infiltration joint-repairing microsphere of the present invention when the magnetic glue-repairing solution is released by melting;
FIG. 4 is a schematic structural view of the upper end of the infiltration mending crack microsphere of the invention when gas overflows due to friction rupture.
The reference numbers in the figures illustrate:
a thick shell is loaded outside 11, a thin pre-melted shell is arranged below 12, a gas guide rod is 13, and a sealing ball is arranged outside 2.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, in the drawing, a represents a steel plate, b represents a crack, c represents a crack filling layer, d represents an anticorrosive layer, and the self-crack-filling anticorrosive treatment process for the surface of the steel plate comprises the following steps:
s1, firstly, carrying out oil and rust removal treatment on the surface of a steel plate, and then carrying out drying treatment;
s2, uniformly spreading a layer of infiltration joint-repairing microspheres on the surface of the steel plate, and then guiding the steel plate below the steel plate through a magnetic plate to enable the infiltration joint-repairing microspheres to stand;
s3, referring to the figure 3, uniformly heating the steel plate to melt the lower end part of the lower infiltration crack-repairing microsphere, wherein the magnetic crack-repairing glue inside the steel plate overflows and is dispersed on the surface of the steel plate and permeates into cracks, so that a crack-repairing layer is formed on the surface of the steel plate;
s4, cooling to solidify the melted part at the lower end part of the infiltration joint-filling microsphere, so that the infiltration joint-filling microsphere is integrally positioned and vertically erected on the surface of the steel plate;
s5, pouring an anticorrosive material above the lower penetration joint microsphere in a grading manner, so that an anticorrosive layer consisting of an anticorrosive inner layer and an anticorrosive surface layer is sequentially formed on the surface of the steel plate from bottom to top;
the step casting method comprises the following specific steps:
s51, pouring a corrosion-resistant material for the first time to cover the lower end parts of the infiltration joint-repairing microspheres, keeping the upper end parts positioned on the outer side, and forming various rows of corrosion-resistant inner layers after solidification and shaping, wherein the corrosion-resistant inner layers can position the infiltration joint-repairing microspheres, so that the stability of the infiltration joint-repairing microspheres is higher, and the friction in the next step is facilitated;
s52, referring to the figure 4, the upper end parts of the downward-seepage crack repairing microspheres are rubbed to damage the upper end parts, then the steel plate is uniformly heated again to soften and slightly melt the crack repairing layer between the steel plate and the anticorrosion inner layer, and gas in the steel plate overflows upwards when being heated, so that gaps are not easy to exist in the crack repairing layer between the anticorrosion inner layer and the steel plate due to the gas, the strength of the steel plate is effectively improved, meanwhile, the steel plate and the anticorrosion layer are not easy to bulge due to air, and the peeling and falling of the anticorrosion layer are further reduced;
s53, pouring the anticorrosive material for the first time, covering the upper end parts of the infiltration joint filling microspheres, and airing and shaping to form an anticorrosive surface layer.
The heating temperature in the step S3 is not higher than 100 ℃, the final temperature of the cooling treatment in the step S4 is not lower than 5 ℃, the cooling speed is 3-5 ℃/S, the rapid cooling is convenient for accelerating the positioning and standing of the infiltration joint-repairing microspheres, so that the integral corrosion prevention efficiency of the steel plate is effectively accelerated, the upper surface of the corrosion prevention inner layer is positioned below the upper end parts of the infiltration joint-repairing microspheres, and the corrosion prevention surface layer completely covers the infiltration joint-repairing microspheres, so that the infiltration joint-repairing microspheres longitudinally span the whole corrosion prevention layer, a supporting effect can be formed in the corrosion prevention layer, the strength of the corrosion prevention inner layer is effectively improved, and the situation that the swelling and falling are not easy to occur is avoided.
Before the steel plate is reheated in the step S52, the steel plate is in a negative pressure environment, so that when the gap filling layer is softened or melted due to reheating, the overflow of air inside the steel plate is accelerated, and the step S53 is also performed in the negative pressure environment, so that the situation that outside air enters the liquid storage cavity along the air guide rod 13 during secondary pouring is effectively avoided.
Referring to fig. 2, the lower infiltration joint filling microsphere includes an outer bearing thick shell 11 and a lower pre-melting thin shell 12 fixedly connected to the lower end of the outer bearing thick shell 11, a liquid storage cavity is formed between the outer bearing thick shell 11 and the lower pre-melting thin shell 12, the center point of the liquid storage cavity is located at a position eccentric from the spherical center of the outer bearing thick shell 11, and the thickness of the lower pre-melting thin shell 12 is not more than 2mm, so that the whole center of gravity of the lower infiltration joint filling microsphere is close to the lower pre-melting thin shell 12, when spreading, the lower pre-melting thin shell 12 is downward contacted with a steel plate, magnetic glue filling liquid is filled in the liquid storage cavity, an air guide rod 13 is fixedly connected to the inside of the outer bearing thick shell 11, the air guide rod 13 is communicated with the liquid storage cavity, an outer sealing ball 2 is fixedly connected to the upper end of the air guide rod 13, the outer bearing thick shell 11 is made of a high-hardness material, so that the outer bearing thick shell 11 has a strong bearing property, and when the steel plate is used after being processed, the outer bearing thick shell 11 is made of a high-strength, the lower pre-melting thin shell 12 is made of a magnetic glue liquid, which is easily melted and is melted by heat.
The outer sealing ball 2 is made of a sealing rubber material, and the thickness of the outer sealing ball 2 is 0.5-1.5mm, so that the hardness is low, and the outer sealing ball 2 is convenient to break when in friction operation, please refer to fig. 1, meanwhile, the infiltration crack repairing microsphere part at the crack on the surface of the steel plate is sunk into the crack, so that the outer sealing ball 2 at the upper end part is lower than other outer sealing balls 2, when in friction, the outer sealing ball 2 at the larger crack is not easy to damage, and the crack is easy to be expanded when in heating, so that a worker is reminded of the existence of the crack at the crack, and the worker can perform fixed-point anticorrosive coating reinforcement at the crack, wherein the magnetic repairing glue comprises magnetic powder, repair liquid and red wax sheet powder, and the three are mixed according to the volume ratio of 1-2, the melting point of the red wax sheet powder is low, the red wax sheet powder is melted when in heating, so that the whole magnetic repairing glue can be improved, the diffusion of the magnetic repairing glue on the surface of the steel plate is accelerated, and the permeability towards the crack is in the crack.
Through the infiltration crack filling microsphere of laying on the steel sheet surface, under the pouring operation of gradation, can indulge and stride whole anticorrosive coating, and then form the supporting role in the anticorrosive coating, effectively improve its intensity, reduce the anticorrosive coating and take place the condition that the swell drops, simultaneously before pouring anticorrosive material, under the heating effect, the magnetism glue filling liquid in the infiltration crack filling microsphere is in steel sheet surface dispersion and infiltration crack, and then form the crack filling layer on the steel sheet surface, realize fissured self-repairing, and under the negative pressure effect, can effectively get rid of the intraformational gas of crack filling and make and be difficult for because of the air emergence swell phenomenon between steel sheet and this anticorrosive coating, further reduce the anticorrosive coating and take place the condition that the anticorrosive coating skinned and drop, simultaneously under the effect of outsourcing ball 2, be convenient for remind the staff this department to have the crack, thereby make the staff carry out the anticorrosive coating reinforcement of fixed point to this department.
As described above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (6)
1. The surface self-repairing anti-corrosion treatment process of the steel plate is characterized by comprising the following steps of: the method comprises the following steps:
s1, firstly, carrying out oil and rust removal treatment on the surface of a steel plate, and then carrying out drying treatment;
s2, uniformly spreading a layer of infiltration joint-repairing microspheres on the surface of the steel plate, and then guiding the steel plate below the steel plate through a magnetic plate to enable the infiltration joint-repairing microspheres to stand;
s3, uniformly heating the steel plate to melt the lower end part of the infiltration joint-repairing microspheres, wherein the magnetic joint-repairing glue inside the infiltration joint-repairing microspheres overflows and is dispersed on the surface of the steel plate and permeates into cracks, so that a joint-repairing layer is formed on the surface of the steel plate;
s4, cooling to solidify the melted part at the lower end part of the infiltration joint-filling microsphere, so that the infiltration joint-filling microsphere is integrally positioned and vertically erected on the surface of the steel plate;
s5, pouring an anticorrosive material above the lower penetration joint microsphere in a grading manner, so that an anticorrosive layer consisting of an anticorrosive inner layer and an anticorrosive surface layer is sequentially formed on the surface of the steel plate from bottom to top; the upper surface of the anti-corrosion inner layer is positioned below the upper end part of the infiltration joint-repairing microsphere, and the anti-corrosion surface layer completely covers the infiltration joint-repairing microsphere;
the step S5 of fractional pouring comprises the following specific steps:
s51, pouring an anticorrosive material for the first time to cover the lower end parts of the infiltration joint repairing microspheres, keeping the upper end parts positioned on the outer side, and forming anticorrosive inner layers of various rows after solidification and shaping;
s52, rubbing the upper end parts of the infiltration joint filling microspheres to damage the upper end parts, then uniformly heating the steel plate again to soften and slightly melt the joint filling layer between the steel plate and the anticorrosion inner layer, and heating the gas in the steel plate to overflow upwards;
s53, pouring an anticorrosive material for the second time, covering the upper end part of the infiltration joint filling microsphere, and airing and shaping to form an anticorrosive surface layer;
before the steel plate is heated again in the step S52, the steel plate is in a negative pressure environment, and the step S53 is also carried out in the negative pressure environment;
ooze the crack filling microsphere down and include that bear thick shell (11) and fixed connection bear thick shell (11) lower extreme down premelting thin shell (12) outward, bear thick shell (11) outward and form the stock solution chamber down between premelting thin shell (12), magnetism glue filling liquid is filled in the stock solution intracavity, bear thick shell (11) inside fixedly connected with air guide rod (13) outward, and air guide rod (13) and stock solution chamber communicate with each other, air guide rod (13) upper end fixedly connected with outer packing ball (2).
2. The steel plate surface self-mending anticorrosive treatment process according to claim 1, characterized in that: the heating temperature in the step S3 is not higher than 100 ℃, the final temperature of the cooling treatment in the step S4 is not lower than 5 ℃, and the cooling speed is 3-5 ℃/S.
3. The steel plate surface self-joint-repairing corrosion prevention treatment process according to claim 1, characterized in that: the outer bearing thick shell (11) is made of high-hardness materials, and the lower pre-melting thin shell (12) is made of low-melting-point hot melting materials.
4. The steel plate surface self-mending anticorrosive treatment process according to claim 1, characterized in that: the outer packaging ball (2) is made of a sealing rubber material, and the thickness of the outer packaging ball (2) is 0.5-1.5mm.
5. The steel plate surface self-mending anticorrosive treatment process according to claim 1, characterized in that: the central point of the liquid storage cavity is positioned at the position which is eccentric from the spherical center of the outer bearing thick shell (11), and the thickness of the lower pre-melting thin shell (12) is not more than 2mm.
6. The steel plate surface self-joint-repairing corrosion prevention treatment process according to claim 5, characterized in that: the magnetic repairing glue liquid comprises magnetic powder, steel repairing liquid and red wax sheet powder, and the magnetic repairing glue liquid, the steel repairing liquid and the red wax sheet powder are mixed according to the volume ratio of 1.
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