CN114774935A - Steel member surface roughness control method for laser rust removal - Google Patents
Steel member surface roughness control method for laser rust removal Download PDFInfo
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- CN114774935A CN114774935A CN202210376002.5A CN202210376002A CN114774935A CN 114774935 A CN114774935 A CN 114774935A CN 202210376002 A CN202210376002 A CN 202210376002A CN 114774935 A CN114774935 A CN 114774935A
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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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/085—Iron or steel solutions containing HNO3
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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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
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- General Chemical & Material Sciences (AREA)
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- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- ing And Chemical Polishing (AREA)
Abstract
The invention relates to the technical field of laser rust removal, and particularly discloses a steel member surface roughness control method for laser rust removal, which comprises the following steps: s1, cutting the steel member according to the required size; s2, polishing the edge of the cut steel member to eliminate burr barbs; s3, soaking the polished steel member in degreasing fluid to clean oil contamination impurities on the surface; s4, soaking the steel member soaked in the degreasing solution in acid liquor to change the surface structure of the steel member; s5, detecting the roughness of the surface of the steel member, then establishing a treatment model of the roughness of the steel member, and carrying out primary treatment on the steel member according to the model; s6, if the first treatment result reaches the expected roughness, performing second treatment according to the established model, wherein the second treatment result is the roughness specified by the steel member; if the first processing result does not reach the expected roughness, adjusting the processing model in the step S5, and repeating the step S5; the roughness can be effectively improved.
Description
Technical Field
The invention relates to the technical field of laser rust removal, in particular to a method for controlling the surface roughness of a steel member for laser rust removal.
Background
Steel members are common construction materials, which are installed at present in construction after being prefabricated in a factory and then need to be coated. Different building occasions have different requirements on the surface quality of the steel member, such as requirements of corrosion resistance and ageing resistance, rust generated on the surface of the steel member due to long storage time or unsatisfactory construction environment needs to be removed, and meanwhile, the surface of the steel member after rust removal needs to meet certain surface roughness requirements for better adhesive force of a coating object.
A clean and environment-friendly rust removal method is provided, and a method of emitting laser pulses to a rust surface is adopted, so that the rust part absorbs energy to be molten, and a rust layer falls off. It has been found that the areas scanned by the descaling laser pulses can develop a surface topography such as water ripples, which in turn changes the surface roughness of the steel member surface. Further research has found that the surface roughness of steel products is changed from small (rust spot removal) to large (surface burn) by performing multiple or repeated laser irradiation on the steel surface, so that the current technology cannot control the surface roughness while removing rust if the coating or assembly requires certain requirements on the surface roughness of the steel member.
Disclosure of Invention
The invention aims to provide a steel member surface roughness control method for laser derusting to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a steel member surface roughness control method for laser derusting comprises the following steps:
s1, cutting the steel member according to the required size;
s2, polishing the edge of the cut steel member to eliminate burr barbs;
s3, soaking the polished steel member in degreasing fluid to clean oil contamination impurities on the surface;
s4, soaking the steel member soaked in the degreasing solution in acid liquor to change the surface structure of the steel member;
s5, detecting the roughness of the surface of the steel member, then establishing a treatment model of the roughness of the steel member, and carrying out primary treatment on the steel member according to the model;
s6, if the first treatment result reaches the expected roughness, performing second treatment according to the established model, wherein the second treatment result is the roughness specified by the steel member; if the first processing result does not reach the expected roughness, the processing model in step S5 is adjusted, and step S5 is repeated.
As a preferable technical solution of the present invention, in the step S1, the actual size of the cut steel member is 1cm to 3cm larger than the required size of the steel member for loss in the subsequent treatment.
As a preferable technical scheme of the invention, in the step S2, the edge of the steel member is repeatedly polished by shot blasting equipment, and the abrasive used by the shot blasting equipment is prepared from S280 type steel shots and G30 type steel shots according to a ratio of 1: 0.5-0.8.
In a preferred technical scheme of the present invention, in step S3, the degreasing agent is prepared by mixing a degreasing agent and water, wherein the specific weight ratio of the degreasing agent to water is 1: 600-800, and the treatment temperature of the degreasing agent is 70-90 ℃.
As a preferable technical scheme of the invention, the degreasing agent is CK-8300 deoiling powder.
As a preferable technical scheme of the invention, in the step S4, the acid solution for soaking is nitric acid with the concentration of 20 wt% -50 wt%, the temperature of the acid solution in the acid washing process is not lower than 55 ℃, and the acid washing time is 5 min-8 min.
As a preferred embodiment of the present invention, in step S5, the influencing factors included in the established treatment model for establishing the roughness of the steel member include, but are not limited to, roll roughness, rolling force per unit width, rolling speed, and elongation.
As a preferable technical solution of the present invention, in step S5, the detected roughness of the steel member is differentiated from the expected roughness, and parameters are set through the established model, so as to ensure that the difference theoretically reaches half of the difference after the first treatment.
As a preferable embodiment of the present invention, in the step S6, the parameter is adjusted so that the difference after the first processing is theoretically one third after the first processing is repeated after the step S5.
Compared with the prior art, the invention has the beneficial effects that: the method for controlling the surface roughness of the steel member for laser rust removal has simple process and is convenient to implement and operate; the technical requirement difficulty is low, workers can easily operate the machine, and the processing efficiency is ensured; the surface roughness is the same after treatment, which is convenient for the subsequent coating operation.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
a steel member surface roughness control method for laser derusting comprises the following steps:
s1, cutting the steel member according to the required size, wherein the actual size of the cut steel member is 1.8-2.2 cm larger than the required size of the steel member for subsequent treatment loss;
s2, repeatedly polishing the edge of the cut steel member by using shot blasting equipment to eliminate burr barbs; the abrasive used by the shot blasting equipment is prepared from S280 type steel shots and G30 type steel sand according to the proportion of 1: 0.6;
s3, soaking the polished steel member in degreasing fluid to clean oil contamination impurities on the surface; the degreasing agent is prepared by proportioning the degreasing agent and water, the specific weight ratio of the degreasing agent to the water is 1:700, and the treatment temperature of the degreasing agent is 80 ℃;
s4, soaking the steel member soaked in the degreasing solution in acid liquor to change the surface structure of the steel member; the acid solution for soaking is nitric acid with the concentration of 40 wt%, the temperature of the acid solution in the acid washing process is 60 ℃, and the acid washing time is 7 min;
s5, detecting the surface roughness of the steel member, then establishing a treatment model of the roughness of the steel member, and carrying out primary treatment on the steel member according to the model; making a difference between the detected roughness of the steel member and the expected roughness, wherein the difference theoretically reaches half of the difference after the first treatment;
and S6, when the first treatment result reaches the expected roughness, performing second treatment according to the established model, wherein the second treatment result is the specified roughness of the steel member.
Example two:
a steel member surface roughness control method for laser rust removal comprises the following steps:
s1, cutting the steel member according to the required size, wherein the actual size of the cut steel member is 3cm larger than the required size of the steel member for subsequent treatment loss;
s2, repeatedly polishing the edge of the cut steel member by using shot blasting equipment to eliminate burrs and barbs; the abrasive used by the shot blasting equipment is prepared from S280 type steel shots and G30 type steel sand according to the proportion of 1: 0.8;
s3, soaking the polished steel member in degreasing fluid to clean oil contamination impurities on the surface; the degreasing agent is prepared by proportioning the degreasing agent and water, the specific weight ratio of the degreasing agent to the water is 1:800, and the treatment temperature of the degreasing agent is 90 ℃;
s4, soaking the steel member soaked in the degreasing solution in acid liquor to change the surface structure of the steel member; the acid solution for soaking is nitric acid with the concentration of 50 wt%, the temperature of the acid solution in the acid washing process is 65 ℃, and the acid washing time is 8 min;
s5, detecting the roughness of the surface of the steel member, then establishing a treatment model of the roughness of the steel member, and carrying out primary treatment on the steel member according to the model; making a difference between the detected roughness of the steel member and the expected roughness, wherein the difference theoretically reaches half of the difference after the first treatment;
and S6, when the first treatment result reaches the expected roughness, performing second treatment according to the established model, wherein the second treatment result is the roughness specified by the steel member.
Example three:
a steel member surface roughness control method for laser rust removal comprises the following steps:
s1, cutting the steel member according to the required size, wherein the actual size of the cut steel member is 1cm larger than the required size of the steel member for subsequent treatment loss;
s2, repeatedly polishing the edge of the cut steel member by using shot blasting equipment to eliminate burrs and barbs; the abrasive used by the shot blasting equipment is prepared from S280 type steel shots and G30 type steel sand according to the proportion of 1: 0.5;
s3, soaking the polished steel member in degreasing fluid to clean oil contamination impurities on the surface; the degreasing agent is prepared by proportioning the degreasing agent and water, the specific weight ratio of the degreasing agent to the water is 1:600, and the treatment temperature of the degreasing agent is 70 ℃;
s4, soaking the steel member soaked in the degreasing solution in acid liquor to change the surface structure of the steel member; the acid solution for soaking is 20 wt% nitric acid, the temperature of the acid solution in the acid washing process is 55 ℃, and the acid washing time is 5 min;
s5, detecting the roughness of the surface of the steel member, then establishing a treatment model of the roughness of the steel member, and carrying out primary treatment on the steel member according to the model; making a difference between the detected roughness of the steel member and the expected roughness, wherein the difference theoretically reaches half of the difference after the first treatment;
and S6, when the first treatment result reaches the expected roughness, performing second treatment according to the established model, wherein the second treatment result is the specified roughness of the steel member.
The differences between the first embodiment, the second embodiment and the third embodiment are in terms of parameters between the steps, and the rest of the steps are kept synchronous.
The roughness of the surface of the steel member processed in the first embodiment, the roughness of the surface of the steel member processed in the second embodiment and the roughness of the surface of the steel member processed in the third embodiment are respectively collected, three parts of the steel member processed in each embodiment are selected for detection, the detection positions before and after the treatment are the same, the positions are randomly selected, and the specific data are shown in the following table.
As can be seen from the above table, the roughness of the surface of the whole steel member is greatly reduced before and after treatment, and simultaneously, the roughness of each position after treatment is kept in a relatively balanced range, so that the problem of inconsistent roughness of the surface of the steel member caused by laser rust removal can be effectively solved, and the subsequent coating work can be conveniently and smoothly carried out.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A steel member surface roughness control method for laser rust removal is characterized by comprising the following steps:
s1, cutting the steel member according to the required size;
s2, polishing the edge of the cut steel member to eliminate burrs and barbs;
s3, soaking the polished steel member in degreasing fluid to clean oil contamination impurities on the surface;
s4, soaking the steel member soaked in the degreasing solution in acid liquor to change the surface structure of the steel member;
s5, detecting the surface roughness of the steel member, then establishing a treatment model of the roughness of the steel member, and carrying out primary treatment on the steel member according to the model;
s6, if the first treatment result reaches the expected roughness, performing second treatment according to the established model, wherein the second treatment result is the roughness specified by the steel member; if the first processing result does not reach the expected roughness, the processing model in step S5 is adjusted, and step S5 is repeated.
2. A steel member surface roughness controlling method for laser descaling as recited in claim 1, characterized in that: in the step S1, the actual size of the cut steel member is 1 cm-3 cm larger than the required size of the steel member for subsequent treatment loss.
3. A steel member surface roughness controlling method for laser descaling as recited in claim 1, characterized in that: in the step S2, the edge of the steel member is repeatedly polished by shot blasting equipment, and the abrasive used by the shot blasting equipment is prepared from S280 type steel shots and G30 type steel shots according to the proportion of 1: 0.5-0.8.
4. A steel member surface roughness controlling method for laser descaling as recited in claim 1, characterized in that: in the step S3, the degreasing agent is prepared by mixing the degreasing agent and water, the specific weight ratio of the degreasing agent to the water is 1: 600-800, and the treatment temperature of the degreasing agent is 70-90 ℃.
5. The method of controlling the surface roughness of a steel member for laser descaling according to claim 4, wherein: the degreasing agent is CK-8300 deoiling powder.
6. A steel member surface roughness controlling method for laser descaling as recited in claim 1, characterized in that: in the step S4, the acid solution for soaking is 20-50 wt% nitric acid, the temperature of the acid solution in the acid washing process is not lower than 55 ℃, and the acid washing time is 5-8 min.
7. A steel member surface roughness controlling method for laser descaling as recited in claim 1, characterized in that: in step S5, the influencing factors included in the established treatment model for establishing the roughness of the steel member include, but are not limited to, roll roughness, rolling force per unit width, rolling speed and elongation.
8. A steel member surface roughness controlling method for laser descaling as recited in claim 1, characterized in that: in step S5, the roughness of the detected steel member is differentiated from the expected roughness, and parameters are set by the established model to ensure that the roughness theoretically reaches half of the difference after the first treatment.
9. A steel member surface roughness controlling method for laser descaling as recited in claim 1, characterized in that: in step S6, the parameter is adjusted after repeating step S5 so that the difference is one third theoretically after the first processing is not reached to the expected processing.
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| CN202210376002.5A CN114774935A (en) | 2022-04-11 | 2022-04-11 | Steel member surface roughness control method for laser rust removal |
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| CN113477741A (en) * | 2021-07-14 | 2021-10-08 | 永鑫精密材料（无锡）有限公司 | Production method of double-optical-surface low-carbon steel strip |
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