CN109807697B - Method for treating oxide layer on surface of heat treatment multiple layer of explosive composite board - Google Patents
Method for treating oxide layer on surface of heat treatment multiple layer of explosive composite board Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000010438 heat treatment Methods 0.000 title claims description 27
- 239000002360 explosive Substances 0.000 title claims description 11
- 238000000227 grinding Methods 0.000 claims abstract description 72
- 238000005406 washing Methods 0.000 claims abstract description 54
- 238000005096 rolling process Methods 0.000 claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 82
- 239000006004 Quartz sand Substances 0.000 claims description 77
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 239000007864 aqueous solution Substances 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 11
- 239000000243 solution Substances 0.000 claims description 11
- 239000012535 impurity Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 7
- 230000007797 corrosion Effects 0.000 claims description 7
- 239000003112 inhibitor Substances 0.000 claims description 7
- 238000004880 explosion Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical compound O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 3
- JUJWROOIHBZHMG-UHFFFAOYSA-N pyridine Substances C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 3
- -1 pyridine halide Chemical class 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 150000003585 thioureas Chemical class 0.000 claims description 3
- 238000005554 pickling Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 7
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 238000010297 mechanical methods and process Methods 0.000 abstract description 4
- 238000007669 thermal treatment Methods 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 12
- 239000001257 hydrogen Substances 0.000 description 12
- 229910052739 hydrogen Inorganic materials 0.000 description 12
- 238000005498 polishing Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 239000002184 metal Substances 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000007872 degassing Methods 0.000 description 2
- YZCKVEUIGOORGS-UHFFFAOYSA-N Hydrogen atom Chemical compound [H] YZCKVEUIGOORGS-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004182 chemical digestion Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The scheme relates to a method for treating a multilayer surface oxide layer of a thermal treatment composite plate, which comprises the steps of pretreatment, rolling, disc laying, primary grinding and washing, secondary grinding and washing, subsequent treatment and the like; the invention has small damage to the multiple layer, and the time of each grinding and washing end is lifted up for observation, thereby being convenient to control the grinding and washing progress and observing the grinding and washing condition of the oxide layer on the multiple layer; less pickling solution is consumed, and the environmental pollution is less; the method has the advantages of high treatment speed, simple process, low requirement on equipment precision, labor and cost saving, and higher production efficiency compared with a simple chemical method or a mechanical method.
Description
Technical Field
The invention belongs to the technical field of explosive cladding, and particularly relates to a method for treating a surface oxide layer of a heat treatment multilayer of an explosive composite plate.
Background
In the metal composite plate manufactured by the explosion method in the prior art, heat treatment is needed because the normalizing state of the explosion composite plate is destroyed during explosion and the like. In the heat treatment process, if no inert gas is used for protection, a thick and compact oxide layer, commonly called as an oxide skin, is generally generated on the surface of the multi-layer metal after the heat treatment, and the color of the generated oxide skin is black, gray, even green and the like according to different content components of the multi-layer material of the oxide skin explosion composite plate. The composite plate clad metal is generally heated to a temperature of more than 500 ℃ during heat treatment, and if gas protection is required to be carried out in the whole heat treatment process, the requirements on the heat treatment process and equipment are high, the cost is high, and most manufacturers do not have power to adopt a gas protection production method.
The methods for removing the oxide scale generally include 3 methods:
1. a mechanical method, namely, a polishing wheel and other equipment are adopted for physical polishing, and an oxide layer on the surface of the composite layer is ground off to expose the metal essence; under the condition of low mechanical precision, the method can generate more loss to the multiple layers, and usually needs to polish for many times, so that the production efficiency is low.
2. Chemical method, adopting acid-washing passivating agent to coat on the surface of the composite layer, removing oxide layer on the surface by utilizing chemical reaction to expose metal essence; the method is simple and convenient to operate, but consumes a large amount of acid-washing passivator, and has serious environmental pollution.
3. And (3) combining the chemical method and the mechanical method, namely combining the two methods 1 and 2, firstly carrying out acid cleaning passivation and then carrying out mechanical polishing. The method has large investment in the early stage.
In addition, in the chemical pickling of materials such as steel, the occurrence of hydrogen embrittlement should be avoided. Hydrogen embrittlement is the dissolution of hydrogen in steel, and the hydrogen molecules are polymerized to cause stress concentration, and the stress concentration exceeds the strength limit of steel, and fine cracks, also called white spots, are formed in the steel. Hydrogen embrittlement is only preventive and not curative. Once hydrogen embrittlement occurs, it cannot be eliminated. The traces of hydrogen (of the order of minus 6 of 10) that enter the interior of the steel during the smelting of the material and during the manufacturing and assembly processes of the parts (e.g. electroplating, welding) lead to embrittlement and even cracking of the material under the effect of internal residual or applied stresses. During acid washing, the generated hydrogen plays a role in mechanical stripping and shedding of substances difficult to dissolve, impurity removal is facilitated, and atomic hydrogen permeates into a metal matrix and has the side effect of hydrogen embrittlement.
In view of the above, there is a need for an apparatus and method for simultaneously manufacturing a plurality of explosion-clad metal sheets that effectively eliminates or reduces boundary effects.
The invention aims to provide a method for treating a surface oxide layer on a heat treatment multilayer of an explosive composite plate, which has the advantages of simple process, low production cost, less consumption of pickling solution and less environmental pollution.
The invention also aims to provide a method for treating the oxide layer on the surface of the heat treatment multiple layer of the explosive composite plate, which has good treatment effect by simultaneously carrying out physical and chemical actions.
In order to solve the technical problem, the invention discloses a method for treating an oxide layer on the surface of a heat treatment multiple layer of an explosive composite plate, which is characterized by comprising the following steps of:
s1, pretreatment, namely removing obvious impurities on the surface of a cladding, washing away floating oil with alkali, washing the floating oil with clear water, and draining the floating oil for later use;
s2, oppositely rolling the surface of the multiple layer for a plurality of times by using two steel rollers to enable an oxide layer on the surface of the multiple layer to generate a plurality of cracks;
s3, placing quartz sand in a grinding disc with a heating function, and heating to 75-95 ℃; the concentration is 0.5mol/L-
Pouring 2.3mol/L sulfuric acid aqueous solution at the temperature of 80-95 ℃ into quartz sand, quickly stirring and mixing, flattening the quartz sand after uniformly stirring, wherein the height of the sulfuric acid aqueous solution at the bottom of a grinding disc after flattening is not more than 2/3 of the thickness of the quartz sand; the grinding disc is in a disc shape similar to the composite plate in shape, the bottom of the grinding disc is flat, and the area of the grinding disc is larger than that of the composite plate;
s4, hanging the composite board to enable the clad layer of the composite board to face downwards, slowly putting down the composite board to enable the composite board to be reversely buckled on the quartz sand, vibrating the composite board or the millstone by adopting a vibrator to enable the composite board to generate vibration in the horizontal direction and rub the quartz sand in an acid environment, and performing primary grinding and washing; after primary grinding and washing for 30-60S, lifting the composite plate to clean the quartz sand stained on the surface, cooling the composite plate, observing the grinding and washing conditions, flattening and heating the quartz sand to 75-95 ℃, and additionally spraying a proper amount of sulfuric acid aqueous solution in S3 on the surface of the quartz sand;
s5, after the primary grinding and washing is finished, the composite plate is reversely buckled on the quartz sand, the composite plate or the grinding disc is vibrated by a vibrator to carry out grinding and washing for a plurality of times, when the composite plate or the grinding disc is ground for 10-30S, the quartz sand stained on the surface of the composite plate is lifted, the composite plate is cooled, the grinding and washing conditions are observed, meanwhile, the quartz sand is leveled and heated to 75-95 ℃, and a proper amount of sulfuric acid water solution in S3 is additionally sprayed on the surface of the quartz sand; until the oxide layer on the surface of the multiple layers is completely removed;
s6, subsequent treatment: the surface of the composite board is cleaned and polished physically or chemically if necessary.
Preferably, in S2, the rolling pressure of the steel roller depends on the strength of different clad materials, and the steel roller is pre-cooled before rolling so that the surface temperature of the steel roller is lower than the temperature of the clad layer by more than 15 ℃.
Preferably, in the S3 and S4, the pressure applied by the composite plate to the quartz sand during the primary grinding and the secondary grinding is not less than 80kg/m 2; when the dead weight of the composite plate is not enough to provide the pressure, an additional balance weight needs to be applied to the upper surface of the composite plate, and the pressure applied to the quartz sand by the composite plate is not less than 80kg/m < 2 > by additionally arranging a steel plate or a balance weight.
Preferably, in S3 and S4, an ultrasonic generator is disposed on the upper side of the composite plate during the primary grinding and the secondary grinding, and ultrasonic exhaust is performed on the surface of the clad layer during the grinding, wherein the ultrasonic frequency is 50 KHz to 100 KHz.
Preferably, in S3 and S4, the thickness of the quartz sand after being laid flat is 2-3 mm.
Preferably, the quartz sand is fine sand or ultra-fine sand with the average particle size of less than 0.3 mm. Preferably, in the S3 and S4, when the grinding disc vibrates, the horizontal vibration frequency is not lower than 20 Hz.
Preferably, the quartz sand is washed with clean water to remove impurities for more than 500s-800s per time of taking part in the grinding.
Preferably, the quartz sand is subjected to acid cleaning and impurity removal before use, and the quartz sand is replaced every time the quartz sand is used for a period of time.
Preferably, a corrosion inhibitor is added into the sulfuric acid aqueous solution; the corrosion inhibitor comprises one or more of pyridine halide and thiourea derivative.
The method for treating the oxide layer on the surface of the explosion composite board by heat treatment has the following advantages:
1. the method has the advantages of high treatment speed, simple process, low requirement on equipment precision, labor and cost saving, and higher production efficiency compared with a simple chemical method or a mechanical method.
2. Adding acid liquor into quartz sand, heating, performing physical polishing and chemical digestion simultaneously, and achieving high treatment speed and uniformity
The consistency is good.
3. Less pickling solution consumption and less environmental pollution.
4. The noise is low, and the working surface does not need a large amount of pickling solution, so that the method is safer.
5. The damage to the multiple layers is small, the polishing and washing progress can be conveniently controlled by lifting and observing each end of polishing and washing, and the polishing and washing condition of the oxide layer on the multiple layers can be observed.
6. Ultrasonic degassing is assisted during the grinding and washing, so that the hydrogen embrittlement phenomenon is effectively prevented.
7. The quartz sand is preheated before grinding and washing, so that an oxide layer directly contacted with the quartz sand is heated firstly, the reaction of the oxide layer and the pickling solution is more violent, and the reaction of the multilayer metal and the pickling solution is reduced to a certain extent; in addition, the loose quartz sand also provides an overflow channel for generated gas, and prevents the gas from staying and damaging the cladding.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," when used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Examples
A method for processing an oxide layer on the surface of a heat treatment multiple layer of an explosive composite plate is characterized by comprising the following steps:
s1, pretreatment, namely removing obvious impurities on the surface of a cladding, washing away floating oil with alkali, washing the floating oil with clear water, and draining the floating oil for later use;
s2, oppositely rolling the surface of the multiple layer for a plurality of times by using two steel rollers to enable an oxide layer on the surface of the multiple layer to generate a plurality of cracks; the oxide layer on the surface of the multiple layer can be cracked under pressure, and the oxide layer is more easily stripped in small blocks during grinding and washing.
S3, placing quartz sand in a grinding disc with a heating function, and heating to 90 ℃; pouring a sulfuric acid aqueous solution with the concentration of 2mol/L and the temperature of 90 ℃ into quartz sand, quickly stirring and mixing, flattening the quartz sand after uniformly stirring, wherein the height of the sulfuric acid aqueous solution at the bottom of a grinding disc after flattening is 1/2 of the thickness of the quartz sand; the grinding disc is in a disc shape similar to the composite plate in shape, the bottom of the grinding disc is flat, and the area of the grinding disc is larger than that of the composite plate;
s4, hanging the composite board to enable the clad layer of the composite board to face downwards, slowly putting down the composite board to enable the composite board to be reversely buckled on the quartz sand, vibrating the composite board or the millstone by adopting a vibrator to enable the composite board to generate vibration in the horizontal direction and rub the quartz sand in an acid environment, and performing primary grinding and washing; after the primary grinding and washing for 60S, lifting the composite plate to clean the quartz sand stained on the surface, cooling the composite plate, observing the grinding and washing condition, flattening and heating the quartz sand to 90 ℃, and additionally spraying a proper amount of sulfuric acid aqueous solution in S3 on the surface of the quartz sand; the quartz sand is preheated before grinding and washing, so that an oxide layer directly contacted with the quartz sand is heated firstly, the reaction of the oxide layer and a pickling solution is more violent, the loose quartz sand also provides an overflow channel for generated gas, and the pickling solution can rise to the oxide layer along with a capillary channel formed between the quartz sand to react; meanwhile, as the Mohs hardness of the quartz sand is 7, which is higher than the hardness of the oxide layer, the oxide layer is gradually stripped in small blocks along with the pickling process through the uniform friction of the quartz sand on all parts of the surface of the oxide layer, thereby being beneficial to improving the grinding and washing speed and enhancing the grinding and washing effect.
S5, after the primary grinding and washing is finished, the composite plate is reversely buckled on the quartz sand, the composite plate or the grinding disc is vibrated by a vibrator to carry out grinding and washing for a plurality of times, when the composite plate or the grinding disc is ground for 20S, the composite plate is lifted to clean the quartz sand stained on the surface, the composite plate is cooled, the grinding and washing conditions are observed, meanwhile, the quartz sand is leveled and heated to 90 ℃, and a proper amount of sulfuric acid water solution in S3 is additionally sprayed on the surface of the quartz sand; until the oxide layer on the surface of the multiple layers is completely removed; the damage to the multiple layers is small, the polishing and washing progress can be conveniently controlled by lifting and observing each polishing and washing end time, and the polishing and washing condition of the oxide layer on the multiple layers can be observed.
S6, subsequent treatment: the surface of the composite board is cleaned and polished physically or chemically if necessary.
In S2, the rolling pressure of the steel roller depends on the strength of different multi-layer materials, and the steel roller is pre-cooled before rolling, so that the surface temperature of the steel roller is lower than the temperature of the multi-layer materials by more than 15 ℃. Larger temperature differences more easily cause the oxide layer to crack.
In the S3 and S4, when the quartz sand is primarily ground and washed again, the pressure applied by the composite plate to the quartz sand is 120kg/m 2; when the dead weight of the composite plate is not enough to provide the pressure, an additional balance weight needs to be applied to the upper surface of the composite plate, and the pressure applied to the quartz sand by the composite plate is not less than 80kg/m < 2 > by additionally arranging a steel plate or a balance weight. The higher the pressure is, the better the grinding and washing effect is, but the too high pressure may cause uneven accumulation of quartz sand during grinding and washing or local over-grinding and washing.
In S3 and S4, when grinding and washing for the first time and grinding and washing again, set up supersonic generator at the composite sheet upside, carry out ultrasonic exhaust to the multiple layer surface in grinding and washing, the ultrasonic frequency is 50 KHz. The ultrasonic wave has small propagation loss in metal, and the ultrasonic wave is applied to one point on the upper side of the composite plate, so that a good degassing effect can be achieved, the hydrogen embrittlement phenomenon is effectively prevented, and the composite layer and the oxide layer are separated under the action of hydrogen.
In S3 and S4, the thickness of the quartz sand after being laid flat is 2-3 mm.
The quartz sand is ultra-fine sand with the average grain diameter of less than 0.25 mm.
In the S3 and S4, when the grinding disc vibrates, the horizontal vibration frequency is not lower than 20 Hz. And (3) cleaning the quartz sand with clean water to remove impurities when the time of the quartz sand participating in the grinding and cleaning exceeds 500-800 s. After a period of time of grinding and washing, the reaction products such as ferric sulfate in the acid liquor are accumulated, which can affect the acid washing effect and need to be cleaned or replaced in time.
The quartz sand is subjected to acid washing and impurity removal before use, and the quartz sand is replaced every time the quartz sand is used for a period of time. After the quartz sand is used for a period of time, the quartz sand gradually breaks or loses edges and corners of particles, so that the abrasive cleaning effect is reduced.
Adding a corrosion inhibitor into the sulfuric acid aqueous solution; the corrosion inhibitor comprises one or more of pyridine halide and thiourea derivative. The addition of corrosion inhibitors to the pickling solution is a method commonly used in the art.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (10)
1. A method for processing an oxide layer on the surface of a heat treatment multiple layer of an explosive composite plate is characterized by comprising the following steps:
s1, pretreatment, namely removing obvious impurities on the surface of a cladding, washing away floating oil with alkali, washing the floating oil with clear water, and draining the floating oil for later use;
s2, oppositely rolling the surface of the multiple layer for a plurality of times by using two steel rollers to enable an oxide layer on the surface of the multiple layer to generate a plurality of cracks;
s3, placing quartz sand in a grinding disc with a heating function, and heating to 75-95 ℃; the concentration is 0.5mol/L-
Pouring 2.3mol/L sulfuric acid aqueous solution at the temperature of 80-95 ℃ into quartz sand, quickly stirring and mixing, flattening the quartz sand after uniformly stirring, wherein the height of the sulfuric acid aqueous solution at the bottom of a grinding disc after flattening is not more than 2/3 of the thickness of the quartz sand; the grinding disc is in a disc shape similar to the composite plate in shape, the bottom of the grinding disc is flat, and the area of the grinding disc is larger than that of the composite plate;
s4, hanging the composite board to enable the clad layer of the composite board to face downwards, slowly putting down the composite board to enable the composite board to be reversely buckled on the quartz sand, vibrating the composite board or the millstone by adopting a vibrator to enable the composite board to generate vibration in the horizontal direction and rub the quartz sand in an acid environment, and performing primary grinding and washing; after primary grinding and washing for 30-60S, lifting the composite plate to clean the quartz sand stained on the surface, cooling the composite plate, observing the grinding and washing conditions, flattening and heating the quartz sand to 75-95 ℃, and additionally spraying a proper amount of sulfuric acid aqueous solution in S3 on the surface of the quartz sand;
s5, after the primary grinding and washing is finished, the composite plate is reversely buckled on the quartz sand, the composite plate or the grinding disc is vibrated by a vibrator to carry out grinding and washing for a plurality of times, when the composite plate or the grinding disc is ground for 10-30S, the quartz sand stained on the surface of the composite plate is lifted, the composite plate is cooled, the grinding and washing conditions are observed, meanwhile, the quartz sand is leveled and heated to 75-95 ℃, and a proper amount of sulfuric acid water solution in S3 is additionally sprayed on the surface of the quartz sand; until the oxide layer on the surface of the multiple layers is completely removed;
s6, subsequent treatment: the surface of the composite board is cleaned and polished physically or chemically if necessary.
2. The method for treating the oxide layer on the surface of the multiple layers of the explosive composite plate obtained by the heat treatment of the explosive composite plate according to claim 1, wherein in step S2, the pressure of the steel roller is determined according to the strength of different multiple layers of materials, and the steel roller is precooled before rolling so that the surface temperature of the steel roller is lower than the temperature of the multiple layers by more than 15 ℃.
3. The method for treating the oxide layer on the surface of the explosion composite plate subjected to the heat treatment according to claim 1, wherein in the steps S3 and S4, the pressure applied by the composite plate to the quartz sand during the primary grinding and the secondary grinding is not less than 80kg/m 2; when the dead weight of the composite plate is not enough to provide the pressure, an additional balance weight needs to be applied to the upper surface of the composite plate, and the pressure applied to the quartz sand by the composite plate is not less than 80kg/m < 2 > by additionally arranging a steel plate or a balance weight.
4. The method according to claim 1, wherein in the steps of S3 and S4, the ultrasonic generator is disposed on the upper side of the clad plate during the initial grinding and regrinding, and the ultrasonic frequency is 50 KHz to 100KHz during the grinding and washing to exhaust the surface of the clad plate.
5. The method of claim 1, wherein the thickness of the quartz sand after the laying is 2-3mm in S3 and S4.
6. The method according to claim 1, wherein the quartz sand is fine sand or ultra-fine sand having an average particle size of less than 0.3 mm.
7. The method of claim 1, wherein in S3 and S4, the horizontal vibration frequency is not lower than 20Hz when the grinding disc is vibrated.
8. The method according to claim 1, wherein the quartz sand is washed with clean water to remove impurities for a period of time exceeding 500s-800s per time of the grinding.
9. The method according to claim 1, wherein the quartz sand is washed with acid to remove impurities before use, and the quartz sand is replaced after a certain period of use.
10. The method according to claim 1, wherein a corrosion inhibitor is added to the aqueous solution of sulfuric acid; the corrosion inhibitor comprises one or more of pyridine halide and thiourea derivative.
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| CN207873816U (en) * | 2018-01-10 | 2018-09-18 | 潘宇成 | A kind of ultrasonic wave processing equipment of continuous removal metal sheet surface oxide skin |
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| CN109807697A (en) | 2019-05-28 |
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Denomination of invention: Treatment of oxide layer on the surface of explosive clad plate during heat treatment Effective date of registration: 20221213 Granted publication date: 20210423 Pledgee: Postal Savings Bank of China Limited Weihai Branch Pledgor: WEIHAI HONGFANG METAL COMPOSITE LIMITED BY SHARE Ltd. Registration number: Y2022980026966 |
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Granted publication date: 20210423 Pledgee: Postal Savings Bank of China Limited Weihai Branch Pledgor: WEIHAI HONGFANG METAL COMPOSITE LIMITED BY SHARE Ltd. Registration number: Y2022980026966 |