CN113334021A - 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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- CN113334021A CN113334021A CN202110430597.3A CN202110430597A CN113334021A CN 113334021 A CN113334021 A CN 113334021A CN 202110430597 A CN202110430597 A CN 202110430597A CN 113334021 A CN113334021 A CN 113334021A
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Abstract
The invention discloses a steel plate surface self-repairing anti-corrosion treatment process, belonging to the field of steel surface treatment, and the steel plate surface self-repairing anti-corrosion treatment process is characterized in that a downward-permeating crack-repairing microsphere is laid on the surface of a steel plate, under the condition of fractional pouring operation, the whole anti-corrosion layer can be longitudinally spanned, so that a supporting effect is formed in the anti-corrosion layer, the strength of the anti-corrosion layer is effectively improved, and the situation that the anti-corrosion layer is bulged and falls off is reduced, meanwhile, before pouring anti-corrosion materials, under the heating action, magnetic crack-repairing glue liquid in the downward-permeating crack microsphere 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, the self-repairing of the cracks is realized, under the negative pressure, gas in the crack-repairing layer can be effectively removed, so that the bulging phenomenon caused by air is not easy to occur between the steel plate and the anti-corrosion layer, the situation that the anti-corrosion layer is peeled and falls off is further reduced, and under the action of an outer packaging ball, the staff is convenient to remind that cracks exist at the position, and the fixed-point anticorrosive coating is reinforced at the position in time.
Description
Technical Field
The invention relates to the field of steel surface treatment, in particular to a steel plate surface self-joint-repairing 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 plates are divided into the following thickness, thin steel plates are 4 mm (the thinnest is 0.2 mm), medium steel plates are 4-60 mm, and extra thick steel plates are 60-115 mm.
The width of the thin plate is 500-1500 mm; the thickness 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 cracks not only easily affect the strength of the steel plate, but also easily cause the problems of bulging, peeling, falling and the like of an anticorrosive coating at the position, so that before the steel plate is put into use, the cracked position needs to be repaired, then 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 long time, and the surface treatment efficiency is low.
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 the lower-seepage joint-filling microspheres are 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 microspheres longitudinally span the whole anticorrosion layer and can form a supporting function in the anticorrosion layer, thereby effectively improving the strength of the anticorrosion layer and preventing the anticorrosion layer from being easily blown off, meanwhile, before the anticorrosion materials are poured, under the heating action, magnetic joint-filling glue in the lower-seepage joint-filling microspheres overflows from the surface of the steel plate and is dispersed and infiltrated into cracks, thereby forming a joint-filling layer on the surface of the steel plate, realizing the self-repairing of the cracks, and under the negative pressure action, the gas in the joint-filling layer can be effectively removed, so that the bulging phenomenon caused by air between the steel plate and the anticorrosion layer is not easily generated, the peeling off of the anticorrosion layer is further reduced, and under the action of an outer packaging ball, the crack is convenient to remind the worker that the crack exists at the position, so that the worker can reinforce the anti-corrosion layer at a fixed point at the position.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A steel plate surface self-repairing seam anticorrosion treatment process comprises the following steps:
s1, firstly, carrying out oil and rust removal treatment on the surface of the 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, and then a joint-repairing layer is formed on the surface of the steel plate;
s4, cooling to solidify the melted part at the lower end of the infiltration joint-filling microsphere, so that the infiltration joint-filling microsphere is positioned integrally and vertically erected on the surface of the steel plate;
s5, pouring the anticorrosive material above the lower penetration joint repairing microspheres in a grading manner, and sequentially forming an anticorrosive layer consisting of an anticorrosive inner layer and an anticorrosive surface layer on the surface of the steel plate from bottom to top.
Further, 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 overall corrosion prevention efficiency of the steel plate is effectively improved.
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 fractional casting specifically includes:
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, 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, rubbing the upper end of the downward-osmosis joint-repairing microspheres to damage the upper end, uniformly heating the steel plate again to soften and slightly melt the joint-repairing layer between the steel plate and the anticorrosion inner layer, and heating the gas in the steel plate to overflow upwards, so that a gap is not easy to exist in the joint-repairing layer between the anticorrosion inner layer and the steel plate due to the gas, the strength of the steel plate is effectively improved, and 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;
and 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 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 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.
Further, ooze the crack filling microsphere down and include that bear thick shell and fixed connection bear thick shell lower extreme outside and melt the thin shell in advance under, bear thick shell and form the stock solution chamber down outside between the thin shell in advance, magnetism mend glue solution and fill in the stock solution intracavity, bear thick shell inside fixedly connected with air guide rod outside, and air guide rod and stock solution chamber communicate with each other, air guide rod upper end fixedly connected with outer packing ball.
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 which are mixed according to the volume ratio of 1:2-3:1, the melting point of the red wax sheet powder is low, and the red wax sheet powder is melted during heating, so that the overall fluidity of the magnetic mending glue solution can be improved, and further the diffusion of the magnetic mending glue solution on the surface of the steel plate and the permeability of the magnetic mending glue solution towards the inside of a crack are accelerated.
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 joint-repairing microspheres, simultaneously keeping the upper end parts positioned on the outer side, forming various anticorrosive inner layers after solidification and shaping, wherein the anticorrosive inner layers can position the infiltration joint-repairing microspheres, so that the stability of the infiltration joint-repairing microspheres is higher, and the infiltration joint-repairing microspheres are convenient to rub 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 anticorrosion inner layer, and gas in the steel plate is heated to overflow upwards at the moment, 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;
(6) 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.
(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 mending glue solution comprises magnetic powder, steel mending solution and red wax sheet powder which are mixed according to the volume ratio of 1:2-3:1, the melting point of the red wax sheet powder is low, and the red wax sheet powder is melted when heated, so that the overall fluidity of the magnetic mending glue solution can be improved, and further, the diffusion of the magnetic mending glue solution on the surface of a steel plate and the permeability of the magnetic mending glue solution towards the inside of a crack are accelerated.
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-filling microsphere of the present invention when the magnetic glue-filling 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:
the outer bearing thick shell of 11, the lower premelted thin shell of 12, the air guide rod of 13 and the outer sealing ball of 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", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" 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 the 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 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, and then a joint-repairing layer is formed on the surface of the steel plate;
s4, cooling to solidify the melted part at the lower end of the infiltration joint-filling microsphere, so that the infiltration joint-filling microsphere is positioned integrally and vertically erected on the surface of the steel plate;
s5, pouring anticorrosive materials above the lower penetration joint repairing microspheres in a grading manner, and sequentially forming an anticorrosive layer consisting of an anticorrosive inner layer and an anticorrosive surface layer 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, 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, please refer to FIG. 4, the upper end of the infiltration joint filling microsphere is rubbed to damage the upper end, then the steel plate is uniformly heated again to soften and slightly melt the joint filling layer between the steel plate and the anticorrosion inner layer, and the gas in the steel plate overflows upwards when being heated, so that the gap between the anticorrosion inner layer and the steel plate is not easy to exist 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 the air, and the peeling and falling of the anticorrosion layer are further reduced;
and 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 overall 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, the corrosion prevention surface layer completely covers the infiltration joint-repairing microspheres, 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 bulging 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 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 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 central 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 performance, and when the steel plate is used after being processed, the outer bearing thick shell 11 is not easy to collapse under an accidental impact force, the surface anticorrosive layer has higher strength, and the lower pre-melting thin shell 12 is made of a low-melting-point hot melting material, so that the lower pre-melting thin shell is conveniently heated and melted to release the internal magnetic glue replenishing solution.
The outer packaging ball 2 is made of a sealing rubber material, the thickness of the outer packaging ball 2 is 0.5-1.5mm, the hardness of the outer packaging ball is low, the outer packaging ball is convenient to break when in friction operation, please refer to fig. 1, meanwhile, the lower infiltration seam-filling microsphere part at the seam position on the surface of the steel plate is sunk into the seam, the outer packaging ball 2 at the upper end part of the outer packaging ball is lower than other outer packaging balls 2, the outer packaging ball 2 at the larger seam position is not easy to damage during friction, the outer packaging ball expands when being heated, the seam is convenient to remind a worker of the existence of the seam at the position, so that the worker can carry out fixed-point anticorrosion layer reinforcement on the position, the magnetic filling glue comprises magnetic powder, steel repairing liquid and red wax sheet powder, the magnetic filling glue is mixed according to the volume ratio of 1:2-3:1, the melting point of the red wax sheet powder is low, the magnetic filling glue is melted during heating, the fluidity of the whole magnetic filling glue can be improved, and the diffusion of the magnetic filling glue on the surface of the steel plate is accelerated, and permeability into the fracture.
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.
The 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 (10)
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 the 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, and then a joint-repairing layer is formed on the surface of the steel plate;
s4, cooling to solidify the melted part at the lower end of the infiltration joint-filling microsphere, so that the infiltration joint-filling microsphere is positioned integrally and vertically erected on the surface of the steel plate;
s5, pouring the anticorrosive material above the lower penetration joint repairing microspheres in a grading manner, and sequentially forming an anticorrosive layer consisting of an anticorrosive inner layer and an anticorrosive surface layer on the surface of the steel plate from bottom to top.
2. The steel plate surface self-joint-repairing corrosion prevention 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 temperature reduction treatment in the step S4 is not lower than 5 ℃, and the temperature reduction 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 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.
4. The steel plate surface self-joint-repairing corrosion prevention treatment process according to claim 3, characterized in that: the specific steps of the fractional pouring in the step S5 are as follows:
s51, pouring the anticorrosive material for the first time to cover the lower end parts of the infiltration joint repairing microspheres, keeping the upper end parts positioned at the outer sides, and forming various rows of anticorrosive inner layers after solidification and shaping;
s52, rubbing the upper end of the infiltration joint filling microsphere to damage the upper end, 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;
and 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.
5. The steel plate surface self-joint-repairing corrosion prevention treatment process according to claim 4, characterized in that: before the steel sheet is heated again in the step S52, the steel sheet is in a negative pressure environment, and the step S53 is also performed in the negative pressure environment.
6. The steel plate surface self-joint-repairing corrosion prevention treatment process according to claim 1, characterized in that: 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).
7. The steel plate surface self-joint-repairing corrosion prevention treatment process according to claim 6, 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.
8. The steel plate surface self-joint-repairing corrosion prevention treatment process according to claim 6, 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 0.5-1.5 mm.
9. The steel plate surface self-joint-repairing corrosion prevention treatment process according to claim 6, 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 2 mm.
10. The steel plate surface self-joint-repairing corrosion prevention treatment process according to claim 9, characterized in that: the magnetic repairing glue liquid comprises magnetic powder, steel repairing liquid and red wax sheet powder, and the magnetic powder, the steel repairing liquid and the red wax sheet powder are mixed according to the volume ratio of 1:2-3: 1.
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