CN115386880B - Treatment fluid for stripping steel product surface as well as preparation method and application thereof - Google Patents
Treatment fluid for stripping steel product surface as well as preparation method and application thereof Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 70
- 239000010959 steel Substances 0.000 title claims abstract description 70
- 239000012530 fluid Substances 0.000 title claims abstract description 62
- 238000002360 preparation method Methods 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 107
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000005498 polishing Methods 0.000 claims abstract description 81
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 31
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000005259 measurement Methods 0.000 claims description 11
- 238000005530 etching Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 2
- 229910000954 Medium-carbon steel Inorganic materials 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 45
- 230000007797 corrosion Effects 0.000 abstract description 45
- 238000001514 detection method Methods 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 5
- 239000004033 plastic Substances 0.000 description 30
- 230000000052 comparative effect Effects 0.000 description 13
- 238000012360 testing method Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 239000012153 distilled water Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- 239000003153 chemical reaction reagent Substances 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- -1 polytetrafluoroethylene Polymers 0.000 description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 238000013100 final test Methods 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004441 surface measurement Methods 0.000 description 1
Classifications
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/28—Acidic compositions for etching iron group metals
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
- C23F3/04—Heavy metals
- C23F3/06—Heavy metals with acidic solutions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0047—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to residual stresses
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/32—Polishing; Etching
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- ing And Chemical Polishing (AREA)
Abstract
The utility model provides a treatment fluid for stripping a steel product surface, a preparation method and application thereof, wherein the treatment fluid comprises a corrosive fluid and a polishing fluid; the corrosive liquid comprises concentrated sulfuric acid, hydrofluoric acid, hydrogen peroxide and water; the polishing solution comprises a combination of hydrofluoric acid, hydrogen peroxide and water; the corrosion liquid has good uniformity of the stripping depth in the fixed time, the stripping depth can be controlled according to time, the polishing liquid can enable the surface of the steel product to be detected to achieve very high smooth glossiness in the fixed time, the corrosion liquid and the polishing liquid are matched, the stripping of the target depth can be achieved without any external force in the whole stripping process, the original residual stress of the surface of the steel product sample is well maintained, and further the follow-up residual stress detection value can be ensured to be more accurate; meanwhile, the treatment fluid has the advantages of wide raw material sources, simple preparation and low cost.
Description
Technical Field
The utility model belongs to the technical field of metal product surface measurement, and particularly relates to a treatment fluid for steel product surface stripping, a preparation method and application thereof.
Background
The problem of residual stress usually occurs in the processing process of the metal workpiece, the residual stress has influence on the performances of the workpiece such as strength, hardness, abrasion, fatigue, corrosion and the like, the influence of different types of residual stress on the performances of the workpiece is also different, and the residual stress generated in the processing process should be eliminated as much as possible.
When measuring the residual stress distribution of a metal workpiece in the depth direction, electrolytic corrosion is required layer by layer in the depth direction. The common stripping corrosion method is divided into a manual mode and an automatic mode, and the automatic electrolytic stripping corrosion system is generally suitable for stripping operation of a larger plane. CN215727196U discloses a depth-controllable electrolytic stripping device, which comprises an electrolytic tank, a cathode plate, a direct current power supply, an electrolyte input pipeline, an electrolyte output pipeline, an ultrasonic detector and a depth control module; the electrolytic box is fixed above the region to be stripped of the metal workpiece, and the cathode plate is arranged in the inner cavity of the electrolytic box; the cathode plate is connected with an electrolyte input pipeline, an electrolyte output pipeline and a detection head of an ultrasonic detector; the negative electrode and the positive electrode of the direct current power supply are respectively led out of the lead wires and connected with the cathode plate and the metal workpiece; the input end of the depth control module is connected with the ultrasonic detector through a data line, depth information of the ultrasonic detector is received in real time, the output end of the depth control module is connected with a switch circuit of the direct current power supply, and when the received depth value reaches a set threshold value, the direct current power supply is controlled to be powered off. The electrolytic stripping device provided by the utility model automatically stops electrolytic stripping after reaching a preset depth. Electrochemical corrosion realizes step-by-step stripping and depth measurement. However, the device is not suitable for the surface of the stripped layer which is a curved surface or a smaller corrosion surface, and when the surface electrolytic stripping is carried out on the tooth surface and the tooth root of a smaller gear or a bevel gear, the common defects of the conventional automatic electrolytic corrosion system are that the contact of the automatic electrolytic corrosion device is larger, the contact of the device cannot be closely attached to the tooth surface and the tooth root when the automatic corrosion measurement is carried out on the tooth surface and the tooth root of the smaller gear, the electrolytic corrosion effect cannot be accurately controlled, and the error greatly influences the experimental effect.
The manual stripping corrosion can be combined with accurate time control to realize the fine operation of a curved surface or a smaller measuring surface, and the defects of an automatic electrolytic corrosion measuring system can be overcome. CN105483814a discloses an electrolytic polishing solution and a polishing method for measuring residual stress of rare earth magnesium alloy by a exfoliation method, wherein the electrolytic polishing solution comprises the following components in percentage by volume as 100): 25-30% of phosphoric acid, 40-45% of ethanol and 30-35% of ethylene glycol; the electrolytic polishing solution comprises 1L of citric acid and 1-5 g of citric acid; the electrolytic polishing solution provided by the utility model can obtain accurate and stable residual stress detection results, and meanwhile, the polishing process using the electrolytic polishing solution is simple to operate, stable in polishing effect, wide in raw material source, simple to prepare and low in cost. However, it is mainly aimed at rare earth magnesium alloys, and the peeling effect on the surface of steel products is not good.
Therefore, developing a treatment fluid for stripping the surface of a steel product, which has accurate and controllable stripping depth, good consistency and no need of any external force action during stripping, is a technical problem which needs to be solved in the field.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a treatment fluid for stripping the surface of a steel product, and a preparation method and application thereof, wherein the treatment fluid comprises corrosive liquid and polishing liquid, and the corrosion liquid is used for corroding and then the polishing liquid is used for polishing during stripping, so that the treatment fluid has the advantages of good stripping depth consistency, no external force effect during stripping, and accurate and controllable stripping depth, further can ensure that the detection of the subsequent residual stress detection value is more accurate, and is particularly suitable for the stripping and stress measurement of the surface of a steel gear.
To achieve the purpose, the utility model adopts the following technical scheme:
in a first aspect, the present utility model provides a treatment fluid for use in the surface delamination of steel products, the treatment fluid comprising a corrosive fluid and a polishing fluid;
the corrosive liquid comprises concentrated sulfuric acid, hydrofluoric acid, hydrogen peroxide and water;
the polishing solution comprises a combination of hydrofluoric acid, hydrogen peroxide and water.
Firstly, the treatment fluid provided by the utility model comprises the corrosive fluid and the polishing fluid, wherein the corrosive fluid comprises the combination of concentrated sulfuric acid, hydrofluoric acid, hydrogen peroxide and water, and the four components are matched, so that the consistency of the stripping depth of the corrosive fluid in a fixed time is good, the stripping depth is accurate and controllable, and the corrosion depth of a steel product can be accurately controlled by controlling the corrosion time; the polishing solution comprises hydrofluoric acid, hydrogen peroxide and water, and the three components are matched, so that the polishing solution can enable the surface of the steel product to be tested to achieve very high smooth glossiness in a fixed time.
Secondly, when the treatment fluid provided by the utility model is used for measuring residual stress, the polishing fluid and the corrosive liquid are matched, the surface of the steel product is corroded to a target depth by the corrosive liquid, then the steel product is polished by the polishing fluid, and then the subsequent residual stress measurement is carried out, the whole treatment process is electrochemical corrosion, no external force is needed, the original residual stress of the surface of the steel product to be detected is well maintained, the stripping depth is controllable, and further, the detection of the subsequent residual stress detection value can be ensured to be more accurate.
Finally, the polishing solution and the corrosive solution provided by the utility model have the advantages of simple operation, stable stripping effect, wide raw material sources, simple preparation and low cost when in use.
It should be noted that the "accurate control of the stripping depth within a fixed time" refers to that the corrosion depth of the corrosion solution provided by the utility model on the surface of the steel product is related to the corrosion time, and the relationship between the corrosion time and the corrosion depth is determined through a large number of experiments, so that the corrosion depth can be accurately controlled through controlling the time in actual use; the polishing effect of the polishing solution is the same, and the relationship between the polishing time and the polishing effect can be verified through a large number of experiments, so that the polishing effect can be accurately controlled by controlling the polishing time in actual use.
The concentrated sulfuric acid, hydrofluoric acid and hydrogen peroxide used in the treatment liquid provided by the utility model are all commercial products, wherein the concentrated sulfuric acid is preferably sulfuric acid solution with the mass fraction of more than or equal to 70%; the hydrofluoric acid is preferably hydrogen fluoride solution with the mass fraction of 40% or more; the hydrogen peroxide is preferably hydrogen peroxide solution with mass fraction of 30% or more.
Preferably, the volume percentage of each component in the corrosive liquid is respectively as follows, based on the volume of the corrosive liquid being 100 percent: 4-6% of concentrated sulfuric acid, 4-6% of hydrofluoric acid, 30-40% of hydrogen peroxide and 50-60% of water.
Wherein the concentrated sulfuric acid may be 4.2%, 4.4%, 4.6%, 4.8%, 5%, 5.2%, 5.4%, 5.6% or 5.8%, etc.
The hydrofluoric acid may be 4.2%, 4.4%, 4.6%, 4.8%, 5%, 5.2%, 5.4%, 5.6%, 5.8%, or the like.
The hydrogen peroxide may be 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, or the like.
The water may be 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, etc.
Preferably, the volume percentage of each component in the polishing solution is respectively as follows, based on 100% of the volume of the polishing solution: 4-6% of hydrofluoric acid, 80-90% of hydrogen peroxide and 5-15% of water.
The hydrofluoric acid may be 4.2%, 4.4%, 4.6%, 4.8%, 5%, 5.2%, 5.4%, 5.6%, 5.8%, or the like.
The hydrogen peroxide may be 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, or the like.
Who may be 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, etc.
As the preferable technical scheme of the utility model, the volume ratio of each component in the corrosive liquid and the polishing liquid is limited within the limited range, so that the uniformity of the stripping depth of the obtained corrosive liquid in a fixed time is better, the obtained polishing liquid can realize higher smooth glossiness of the surface of the steel product to be tested in the fixed time, and the final stress test result is more accurate.
Preferably, the steel product includes a low carbon steel product and a medium carbon steel product.
Preferably, the steel product comprises a steel gear.
Preferably, the steel gear includes any one of a CrMnTi steel gear, a 35# steel gear, or a 42CrMo steel gear.
In a second aspect, the present utility model provides a method for producing the treatment liquid according to the first aspect, the method comprising the production of an etching liquid and the production of a polishing liquid;
the preparation of the corrosive liquid comprises the following steps: mixing concentrated sulfuric acid, hydrofluoric acid, hydrogen peroxide and water to obtain the corrosive liquid;
the preparation of the polishing solution comprises the following steps: and mixing hydrofluoric acid, hydrogen peroxide and water to obtain the polishing solution.
Preferably, the preparation of the corrosive liquid specifically comprises: and sequentially adding hydrofluoric acid, hydrogen peroxide and water into the concentrated sulfuric acid to obtain the corrosive liquid.
Preferably, the preparation of the polishing solution specifically comprises the following steps: and adding water and hydrogen peroxide into hydrofluoric acid in sequence to obtain the polishing solution.
In the present utility model, the method for preparing the etching solution illustratively includes the steps of:
(1) Absorbing concentrated H by using a graduated sucker a made of glass material 2 SO 4 Placing the bottle in a plastic graduated flask b made of polytetrafluoroethylene material;
(2) Sucking HF with a graduated suction tube c made of plastic material, and placing the HF in a container filled with concentrated H 2 SO 4 A plastic graduated flask b;
(3) Sucking H by a graduated suction tube d made of plastic material 2 O 2 Is placed in a container filled with concentrated H 2 SO 4 And HF in a plastic graduated flask b;
(4) Sucking distilled water by a plastic graduated pipette e, placing the distilled water in a plastic graduated flask b filled with the three chemical reagents, and uniformly stirring the solution by a stirring rod to prepare corrosive liquid;
(5) And (5) timely filling the prepared corrosive liquid f into a polytetrafluoroethylene plastic bottle g, sealing, marking, and storing in a dark place for taking.
In the present utility model, the method for preparing the polishing liquid illustratively comprises the steps of:
(1) Sucking HF by a plastic graduated pipette c and placing the HF in a plastic graduated bottle h;
(2) Sucking distilled water by a plastic graduated pipette e and placing the distilled water in a plastic graduated flask h filled with HF;
(3) Sucking H by a graduated suction tube d made of plastic material 2 O 2 Placing the mixture in a plastic scale bottle h filled with the two chemical reagents, and uniformly stirring the solution by using a stirring rod to prepare polishing solution;
(4) And (3) timely filling the prepared polishing solution i into a polytetrafluoroethylene plastic bottle j, sealing, marking, and storing in a dark place for taking.
In a third aspect, the present utility model provides a method for using the treatment liquid according to the first aspect, the method comprising: placing the corrosive liquid on the surface of a steel product, standing, removing the corrosive liquid, placing the polishing liquid on the surface of the steel product, standing, removing the polishing liquid, measuring the depth, and completing the use of the treatment liquid.
It should be noted that, before using the treatment fluid provided by the present utility model, it is necessary to determine how much of the target depth is, that is, how much of the residual stress at the depth position needs to be tested later, and then determine the rest time, where the rest time needs to be measured by using a precise instrument, such as a stopwatch; according to the accurate control corrosion depth of control time of standing and polishing condition, the last measurement degree of depth can use the amesdial to go on.
Preferably, the steel product is a steel gear, tooth surfaces on two sides of a tooth root of the steel gear are surrounded into a V-shaped groove through plasticine, and then the corrosive liquid and the polishing liquid are placed in the V-shaped groove.
Preferably, the mode of removing the corrosive liquid and the polishing liquid is syringe extraction.
In a fourth aspect, the present utility model provides the use of a treatment fluid according to the first aspect for the measurement of surface stress of steel products.
Preferably, the steel product comprises a steel gear.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model provides a treatment fluid for stripping a steel product surface, a preparation method and application thereof, wherein the treatment fluid comprises a corrosive fluid and a polishing fluid; the corrosive liquid comprises concentrated sulfuric acid, hydrofluoric acid, hydrogen peroxide and water; the polishing solution comprises a combination of hydrofluoric acid, hydrogen peroxide and water; the corrosion liquid has good uniformity of the stripping depth in the fixed time, the stripping depth can be controlled according to time, the polishing liquid can enable the surface of the steel product to be detected to achieve very high smooth glossiness in the fixed time, the corrosion liquid and the polishing liquid are adopted for lapping, the target depth can be achieved without any external force in the whole stripping process, the original residual stress of the surface of the steel product sample is well maintained, and the follow-up residual stress detection value is ensured to be more accurate; meanwhile, the treatment fluid has the advantages of wide raw material sources, simple preparation and low cost.
Detailed Description
The technical scheme of the utility model is further described by the following specific embodiments. It will be apparent to those skilled in the art that the examples are merely to aid in understanding the utility model and are not to be construed as a specific limitation thereof.
Example 1
A treatment fluid for stripping the surface of a steel product, wherein the treatment fluid comprises a corrosive fluid and a polishing fluid;
and the volume of each component in the corrosive liquid is respectively as follows, based on the volume of the corrosive liquid being 100 mL: concentrated sulfuric acid 5mL, hydrofluoric acid 5mL, hydrogen peroxide 35mL and water 55mL;
and taking the volume of the polishing solution as 100mL, wherein the volumes of the components in the polishing solution are respectively as follows: hydrofluoric acid 5mL, hydrogen peroxide 85mL and water 10mL;
the preparation method of the corrosive liquid comprises the following steps:
(A1) Absorbing concentrated H by using a graduated sucker a made of glass material 2 SO 4 Placing the bottle in a plastic graduated flask b made of polytetrafluoroethylene material;
(A2) Sucking HF with a graduated suction tube c made of plastic material, and placing the HF in a container filled with concentrated H 2 SO 4 A plastic graduated flask b;
(A3) Sucking H by a graduated suction tube d made of plastic material 2 O 2 Is placed in a container filled with concentrated H 2 SO 4 And HF in a plastic graduated flask b;
(A4) Sucking distilled water by a plastic graduated pipette e, placing the distilled water in a plastic graduated flask b filled with the three chemical reagents, and uniformly stirring the solution by a stirring rod to prepare corrosive liquid;
(A5) The prepared corrosive liquid f is put into a plastic bottle g made of polytetrafluoroethylene material in time, sealed, marked and stored in a dark place for taking;
the preparation method of the polishing solution comprises the following steps:
(B1) Sucking HF by a plastic graduated pipette c and placing the HF in a plastic graduated bottle h;
(B2) Sucking distilled water by a plastic graduated pipette e and placing the distilled water in a plastic graduated flask h filled with HF;
(B3) Sucking H by a graduated suction tube d made of plastic material 2 O 2 Placing the mixture in a plastic scale bottle h filled with the two chemical reagents, and uniformly stirring the solution by using a stirring rod to prepare polishing solution;
(B4) And (3) timely filling the prepared polishing solution i into a polytetrafluoroethylene plastic bottle j, sealing, marking, and storing in a dark place for taking.
Example 2
A treatment fluid for stripping the surface of a steel product, wherein the treatment fluid comprises a corrosive fluid and a polishing fluid;
and the volume of each component in the corrosive liquid is respectively as follows, based on the volume of the corrosive liquid being 100 mL: 4mL of concentrated sulfuric acid, 6mL of hydrofluoric acid, 30mL of hydrogen peroxide and 60mL of water;
and taking the volume of the polishing solution as 100mL, wherein the volumes of the components in the polishing solution are respectively as follows: 6mL of hydrofluoric acid, 80mL of hydrogen peroxide and 14mL of water;
the preparation method of the treatment liquid is the same as in example 1.
Example 3
A treatment fluid for stripping the surface of a steel product, wherein the treatment fluid comprises a corrosive fluid and a polishing fluid;
and the volume of each component in the corrosive liquid is respectively as follows, based on the volume of the corrosive liquid being 100 mL: 6mL of concentrated sulfuric acid, 4mL of hydrofluoric acid, 40mL of hydrogen peroxide and 50mL of water;
and taking the volume of the polishing solution as 100mL, wherein the volumes of the components in the polishing solution are respectively as follows: 4mL of hydrofluoric acid, 90mL of hydrogen peroxide and 6mL of water;
the preparation method of the treatment liquid is the same as in example 1.
Example 4
The treatment liquid for stripping the surface of the steel product only differs from the treatment liquid in the embodiment 1 in that the volume of each component in the corrosion liquid is respectively as follows, based on the volume of the corrosion liquid being 100 mL: 3mL of concentrated sulfuric acid, 7mL of hydrofluoric acid, 35mL of hydrogen peroxide and 55mL of water, and other components, amounts and preparation methods are the same as those of example 1.
Example 5
The treatment liquid for stripping the surface of the steel product only differs from the treatment liquid in the embodiment 1 in that the volume of each component in the corrosion liquid is respectively as follows, based on the volume of the corrosion liquid being 100 mL: 7mL of concentrated sulfuric acid, 3mL of hydrofluoric acid, 35mL of hydrogen peroxide and 55mL of water, and other components, amounts and preparation methods are the same as those of example 1.
Example 6
The treatment liquid for stripping the surface of the steel product only differs from the treatment liquid in the embodiment 1 in that the volume of each component in the corrosion liquid is respectively as follows, based on the volume of the corrosion liquid being 100 mL: 3mL of concentrated sulfuric acid, 3mL of hydrofluoric acid, 37mL of hydrogen peroxide and 57mL of water, and other components, amounts and preparation methods are the same as those of example 1.
Example 7
The treatment liquid for stripping the surface of the steel product only differs from the treatment liquid in the embodiment 1 in that the volume of each component in the corrosion liquid is respectively as follows, based on the volume of the corrosion liquid being 100 mL: 8mL of concentrated sulfuric acid, 8mL of hydrofluoric acid, 32mL of hydrogen peroxide and 52mL of water, and other components, amounts and preparation methods are the same as those of example 1.
Comparative example 1
The difference between the treatment solution and the example 1 is that concentrated sulfuric acid is not added into the corrosive liquid, the addition amount of hydrofluoric acid is 10mL, and other components, the use amount and the preparation method are the same as those of the example 1.
Comparative example 2
The difference between the treatment solution and the example 1 is that hydrofluoric acid is not added into the corrosive liquid, the addition amount of concentrated sulfuric acid is 10mL, and other components, the use amount and the preparation method are the same as those of the example 1.
Comparative example 3
The treatment liquid for stripping the surface of the steel product is different from the example 1 only in that concentrated nitric acid is used for replacing concentrated sulfuric acid, and other components, the use amount and the preparation method are the same as those of the example 1.
Comparative example 4
The treatment liquid for stripping the surface of the steel product is different from example 1 only in that concentrated nitric acid is used for replacing hydrofluoric acid, and other components, the use amount and the preparation method are the same as those of example 1.
Comparative example 5
The treatment liquid for stripping the surface of the steel product is different from the treatment liquid in the embodiment 1 only in that the concentrated sulfuric acid is replaced by the concentrated hydrochloric acid, and other components, the use amount and the preparation method are the same as those in the embodiment 1.
Comparative example 6
The treatment liquid for stripping the surface of the steel product is different from the treatment liquid in the embodiment 1 only in that concentrated hydrochloric acid is adopted to replace hydrofluoric acid, and other components, the use amount and the preparation method are the same as those in the embodiment 1.
Application example 1
The application method of the treatment fluid for stripping the surface of the steel product comprises the step that the target stripping depth is 50+/-5 mu m below the tooth root surface of the gear;
the using method comprises the following steps:
(1) The tooth root corrosion part of the 20CrMnTi steel gear is blocked into a V-shaped groove V through plasticine and tooth surfaces on two sides of the tooth root;
(2) Pumping a sufficient amount of corrosive liquid (example 1) through a syringe, injecting the corrosive liquid into V in the step a, and standing for 4min to cause electrolytic reaction; after the stopwatch counts for 4min, all the liquid reagents remained in the V are rapidly extracted through the injector;
(3) C, pumping a sufficient amount of polishing solution (example 1) through a syringe, injecting the polishing solution into the V in the step a, standing for 4min to enable the polishing solution to undergo electrolytic reaction, and rapidly pumping all liquid reagents remained in the V through the syringe after the stopwatch is timed for 4 min;
(4) Removing plasticine V blocked at two ends of a tooth root, leaking corroded parts Y, and placing a pointer of a dial indicator X with a measuring range of 0.2mm and an indexing value of 0.002mm at any non-corroded part of the tooth root of the gear for dial indicator zeroing; and placing the pointer of the zeroed dial indicator X at the corroded position Y, and reading a measured value h1=0.052 mm to finish the use of the treatment fluid.
It can be seen that the final test depth (0.052 mm) of the application example meets the requirement of 50+/-5 mu m, which indicates that the depth of the treatment fluid provided in the embodiment 1 is accurate and controllable, and the result after 10 times of use treatment floats by not more than 0.001mm, which indicates that the uniformity of the stripping depth of the treatment fluid provided in the embodiment 1 is good.
Application example 2
The application method of the treatment fluid for stripping the surface of the steel product only differs from application example 1 in that a gear made of 35# steel is adopted to replace a gear made of 20CrMnTi steel, and other steps and parameters are the same as those of application example 1.
Depth test: placing a pointer of a dial indicator X with the measurement range of 0.2mm and the graduation value of 0.002mm at any non-corroded part of the gear tooth root for dial indicator zeroing; the pointer of the zeroed dial indicator X is arranged at the corroded position Y, the measured value h2=0.048 mm is read, and it can be seen that the final test depth of the application example meets the requirements, the depth of the treatment fluid provided in the embodiment 2 is accurate and controllable, the floating of the result after 10 times of use treatment is not more than 0.001mm, and the uniformity of the stripping depth of the treatment fluid provided in the embodiment 2 is good.
Application example 3
The application method of the treatment fluid for stripping the surface of the steel product only differs from application example 1 in that a gear made of 42CrMo steel is adopted to replace a gear made of 20CrMnTi steel, and other steps and parameters are the same as those of application example 1.
Depth test: placing a pointer of a dial indicator X with the measurement range of 0.2mm and the graduation value of 0.002mm at any non-corroded part of the gear tooth root for dial indicator zeroing; the pointer of the zeroed dial indicator X is arranged at the corroded position Y, the measured value h3=0.050 mm is read, and it can be seen that the final test depth of the application example meets the requirements, the depth of the treatment fluid provided in the embodiment 3 is accurate and controllable, the floating of the result after 10 times of use treatment is not more than 0.001mm, and the uniformity of the stripping depth of the treatment fluid provided in the embodiment 3 is good.
Application examples 4 to 9
The use method of the treatment liquid for stripping the surface of the steel product is different from the use example 1 only in that the corrosive liquid provided in the examples 2-7 is used for replacing the corrosive liquid in the example 1, the polishing liquid provided in the examples 2-7 is used for replacing the polishing liquid in the example 1, and other steps and parameters are the same as the use example 1.
Depth test: placing a pointer of a dial indicator X with the measurement range of 0.2mm and the graduation value of 0.002mm at any non-corroded part of the gear tooth root for dial indicator zeroing; the pointer of the dial indicator X after zeroing is placed at the corroded position Y, and the measured values h4=0.050 mm, h5=0.052 mm, h6=0.038 mm, h7=0.064 mm, h8=0.028 mm and h9=0.090 mm are read, so that the treatment solutions provided in examples 4 to 7 cannot effectively control the treatment depth through the control time, and the 10-time treatment result floating exceeding 0.005mm indicates that the treatment solutions provided in examples 4 to 7 are low in test precision and poor in consistency.
Comparative application examples 1 to 6
The method for using the treatment liquid for stripping the surface of the steel product is different from application example 1 only in that the corrosive liquid provided in comparative examples 1 to 6 is used for replacing the corrosive liquid in example 1, the polishing liquid provided in comparative examples 1 to 6 is used for replacing the polishing liquid in example 1, and other steps and parameters are the same as application example 1.
Depth test: placing a pointer of a dial indicator X with the measurement range of 0.2mm and the graduation value of 0.002mm at any non-corroded part of the gear tooth root for dial indicator zeroing; placing the pointer of the zeroed dial indicator X at the corroded position Y, and reading measured values d1=0.020 mm, d2=0.120 mm, d3=0.058 mm, d4=0.100 mm, d5=0.040 mm and d6=0.064 mm; it can be seen that none of the treatment liquids provided in comparative examples 1 to 6 satisfies the requirements of the treatment depth, and the treatment depth cannot be precisely controlled by controlling the time.
Comparative application example 7
A commercially available automatic electrolytic stripping corrosion system with a certain L model is adopted to perform surface stripping corrosion on the tooth root of a gear made of 20CrMnTi, a leakage alarm prompt exists in the whole test process, and the stripping corrosion depth is 0.026mm every 15min after repeated test, so that the requirements are not met.
Comparative application example 8
A full-automatic electrolytic stripping corrosion system with a certain model M is adopted to perform surface stripping corrosion on the tooth root of a gear made of 42CrMo, equipment faults are prompted in the whole test process, and stripping corrosion and corrosion depth display cannot be performed after repeated tests.
Comparative application example 9
A commercial manual-automatic electrolytic stripping corrosion system with a certain model N is adopted to conduct surface stripping corrosion on the tooth root of a 35# steel gear, leakage faults are sometimes prompted in the whole test process, the stripping corrosion depth difference value is large within the same time after repeated test, the data consistency is poor, the average stripping corrosion depth is 0.033mm every 4min, and the requirements are not met.
The applicant states that the present utility model is described by way of the above examples as a treatment fluid for measuring residual stress of steel products, and a method of preparing and using the same, but the present utility model is not limited to the above examples, i.e. it is not meant that the present utility model must be practiced in dependence upon the above examples. It should be apparent to those skilled in the art that any modification of the present utility model, equivalent substitution of raw materials for the product of the present utility model, addition of auxiliary components, selection of specific modes, etc., falls within the scope of the present utility model and the scope of disclosure.
Claims (10)
1. The treatment fluid for stripping the surface of the steel gear is characterized by comprising a corrosive liquid and a polishing liquid;
the corrosive liquid consists of concentrated sulfuric acid, hydrofluoric acid, hydrogen peroxide and water;
the polishing solution consists of hydrofluoric acid, hydrogen peroxide and water;
and the volume percentage of each component in the corrosive liquid is respectively as follows, based on the volume of the corrosive liquid being 100 percent: 4-6% of concentrated sulfuric acid, 4-6% of hydrofluoric acid, 30-40% of hydrogen peroxide and 50-60% of water;
the target stripping depth of the stripping layer on the surface of the steel gear is 50+/-5 mu m below the tooth root surface of the gear;
the volume percentage of each component in the polishing solution is respectively as follows, based on the volume of the polishing solution being 100 percent: 4-6% of hydrofluoric acid, 80-90% of hydrogen peroxide and 5-15% of water.
2. The treatment fluid according to claim 1, wherein the steel gear comprises a low carbon steel gear and a medium carbon steel gear.
3. The treatment fluid according to claim 2, wherein the steel gear comprises any one of a CrMnTi steel gear, a 35# steel gear, and a 42CrMo steel gear.
4. A method for preparing the treatment fluid according to any one of claims 1 to 3, wherein the method comprises the preparation of a corrosive fluid and the preparation of a polishing fluid;
the preparation of the corrosive liquid comprises the following steps: mixing concentrated sulfuric acid, hydrofluoric acid, hydrogen peroxide and water to obtain the corrosive liquid;
the preparation of the polishing solution comprises the following steps: and mixing hydrofluoric acid, hydrogen peroxide and water to obtain the polishing solution.
5. The method according to claim 4, wherein the preparation of the etching solution comprises: and sequentially adding hydrofluoric acid, hydrogen peroxide and water into the concentrated sulfuric acid to obtain the corrosive liquid.
6. The method according to claim 4, wherein the preparation of the polishing liquid comprises: and adding water and hydrogen peroxide into hydrofluoric acid in sequence to obtain the polishing solution.
7. A method of using the treatment fluid according to any one of claims 1 to 3, comprising: placing the corrosive liquid on the surface of the steel gear, standing and removing the corrosive liquid; and placing the polishing solution on the surface of the steel gear, standing, removing the polishing solution, and measuring the depth to finish the use of the treatment solution.
8. The use method according to claim 7, wherein the use method is that tooth surfaces on two sides of a tooth root of the steel gear are surrounded into a V-shaped groove through plasticine, and then the corrosive liquid and the polishing liquid are placed in the V-shaped groove.
9. The method of claim 7, wherein the etching solution and the polishing solution are removed by syringe.
10. Use of the treatment fluid according to any one of claims 1 to 3 in the measurement of surface stress of steel gears.
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| CN115386880A (en) | 2022-11-25 |
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