CN110605226A - Surface enhancement treatment method for heavy hammer sheet - Google Patents
Surface enhancement treatment method for heavy hammer sheet Download PDFInfo
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- CN110605226A CN110605226A CN201910761830.9A CN201910761830A CN110605226A CN 110605226 A CN110605226 A CN 110605226A CN 201910761830 A CN201910761830 A CN 201910761830A CN 110605226 A CN110605226 A CN 110605226A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/14—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
- B05D3/141—Plasma treatment
- B05D3/142—Pretreatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/06—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for producing matt surfaces, e.g. on plastic materials, on glass
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
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Abstract
The invention discloses a surface enhancement treatment method of a heavy hammer sheet, which comprises the following steps: (1) surface cleaning treatment, (2) shot blasting treatment, (3) surface plasma treatment, and (4) coating spraying treatment. The invention provides a surface treatment method of a heavy punch sheet, which has the advantages of simple overall process, easy popularization and application, good mechanical property of the treated heavy punch sheet, strong corrosion resistance and ageing resistance, high stability of a coating and remarkable prolongation of the comprehensive service life.
Description
Technical Field
The invention belongs to the technical field of processing of heavy hammer sheets, and particularly relates to a surface enhancement processing method of a heavy hammer sheet.
Background
In recent years, with the application of a large number of composite insulators of overhead transmission lines, particularly tension tower drainage wire hanging strings, the composite insulators are light in weight, poor in wind deflection resistance and prone to wind deflection discharge accidents, so that a heavy hammer piece needs to be additionally installed to improve the wind deflection resistance of the transmission lines. The weight piece is mostly cast from cast iron and other raw materials, in order to improve the quality and the service life of the weight piece, the surface modification treatment is usually performed on the weight piece, the corrosion problem always occurs due to the existence of moisture and the like in the external environment, and the mechanical strength is reduced after the iron casting is corroded for a long time, the stress is concentrated, and even the risk of fracture occurs, so that the integral use stability is influenced. In order to improve the quality of the weight piece, people often coat a coating on the surface of the weight piece, the conventional coating has poor stability and is easy to fall off, and a ceramic coating, such as an epoxy ceramic coating, is relatively stable and has better corrosion resistance. The application numbers are: 201510082442.X discloses a production process of a ductile cast iron pipe lining epoxy ceramic, wherein an epoxy ceramic coating is disclosed, which can effectively improve the corrosion resistance of the lining, and has good voltage breakdown resistance and good use effect. The heavy hammer sheet is not only required to be resistant to corrosion, but also can be subjected to external forces such as wind power, cable vibration and the like to generate stress, so that the coating coated on the surface of the heavy hammer sheet is required to have good mechanical quality. In the prior art, the performance of the coating is single, the comprehensive performance is not good, the bonding strength of the coating and a substrate is not high, and continuous improvement and optimization are needed.
Disclosure of Invention
The invention aims to provide a surface strengthening treatment method of a weight piece aiming at the existing problems.
The invention is realized by the following technical scheme:
a surface enhancement treatment method for a heavy hammer sheet comprises the following steps:
(1) surface cleaning treatment:
firstly, putting the weight piece into acetone for soaking for 8 ~ 10min, taking out the weight piece after the soaking, washing the weight piece with deionized water once, and drying the weight piece for later use;
(2) shot blasting:
putting the heavy hammer sheet processed in the step (1) into a shot blasting machine for surface shot blasting, taking out the heavy hammer sheet after the surface shot blasting is finished, and blowing off residual particle impurities on the surface by using compressed air for later use;
(3) surface plasma treatment:
putting the heavy hammer slice treated in the step (2) into a low-energy plasma treatment instrument for plasma treatment, and taking out for standby after 15 ~ 20 min;
(4) and (3) coating spraying treatment:
a. mixing titanium nitride and zirconium dioxide according to a weight ratio of 1.5 ~ 2: 2, putting the mixture into a roller powder mixing machine for mixing for 3 ~ 5h, and taking out to obtain mixed powder A for later use;
b. putting mica powder into hydrochloric acid solution, soaking for 3 ~ 5min, filtering, washing with deionized water to neutrality;
c. mixing the mixed powder A prepared in the operation a, the mica powder treated in the operation B, powdery PVA, a titanate coupling agent, sodium pyrophosphate, dodecyl trimethyl ammonium bromide, ethylene diamine tetraacetic acid and deionized water according to the weight ratio of 1:2.5 ~ 3:2 ~ 2.2.2: 0.4 ~ 0.7.7: 0.3 ~ 0.5.5: 0.1 ~ 0.3.3: 0.1 ~ 0.2.2: 14 ~ 16, putting the mixture into a high-speed stirrer, and stirring the mixture at high speed for 1.3 ~ 1.6h to obtain a colloidal mixed material B for later use;
d. mixing quartz powder, the colloidal mixture B prepared in the operation C and epoxy resin according to the weight ratio of 18 ~ 22:5 ~ 7:75 ~ 80, carrying out ultrasonic stirring treatment for 1.8 ~ 2.2.2 h, and taking out to obtain a mixed solution C for later use;
e. mixing quartz powder, the colloidal mixture B prepared in the operation c and a curing agent correspondingly according to the weight ratio of 15 ~ 18:4 ~ 6:75 ~ 80, and then carrying out ultrasonic stirring treatment for 1.2 ~ 1.6.6 h and taking out to obtain a mixed solution D for later use;
f. mixing the mixed liquor C prepared in the operation D and the mixed liquor D prepared in the operation E according to the weight ratio of 1.3 ~ 1.5:1, putting the mixed liquor into a reaction kettle, stirring at the rotating speed of 1500 ~ 1700 rpm for 25 ~ 30min, and taking out to obtain a composite material E for later use;
g. and (E) uniformly spraying the composite material E obtained in the operation f on the surface of the heavy hammer piece treated in the step (3) through a spray gun, putting the heavy hammer piece into a vacuum drying oven for drying treatment, and taking out the heavy hammer piece after the drying treatment is finished.
Further, the drying in step (1) is to put the weight piece into an environment with a temperature of 100 ~ 105 ℃ for drying treatment for 3 ~ 4 h.
Further, the medium used in the shot blasting in the step (2) is corundum sand, the spraying angle is 90 degrees, and the spraying distance is 70 ~ 75 cm.
Further, the gas medium used in the plasma treatment in the step (3) is nitrogen, the output power of the low-energy plasma treatment instrument is controlled to be 3 ~ 3.5.5 kW, and the frequency is controlled to be 25 ~ 30 kHz.
Further, the particle sizes of the titanium nitride and the zirconium dioxide in the operation a of the step (4) are 1200 meshes.
Furthermore, the particle size of the mica powder in the operation b of the step (4) is 600 meshes, and the mass fraction of the hydrochloric acid solution is 0.2 ~ 0.3.3%.
Further, the high-speed stirring treatment in operation c of step (4) is carried out at a rotation speed of 2300 ~ 2500 rpm.
Further, the ultrasonic agitation treatment in operation d and operation e of step (4) is performed while controlling the frequency of the ultrasonic wave to be 800 ~ 850 kHz.
Further, in the drying treatment in operation g of step (4), the degree of vacuum in the vacuum drying oven was controlled to 1 ~ 10Pa, and the drying temperature was controlled to 65 ~ 70 ℃.
The counterweight sheet is subjected to special surface enhancement treatment, so that the using effect and the service life of the counterweight sheet are well improved. The surface of the heavy hammer is cleaned to remove impurity components such as surface oil stains, and then shot blasting is performed on the surface, so that the surface hardness of the heavy hammer is properly improved and the roughness of the heavy hammer is increased through shot blasting, and the subsequent coating is sprayed and coated conveniently; then, plasma treatment is carried out, and the plasma with good energy is used for carrying out irradiation treatment on the surface of the counterweight sheet, so that the surface activity of the counterweight sheet is effectively improved, the types and the number of surface active groups of the counterweight sheet are increased, and the subsequent coating is favorably crosslinked and fixed; finally, spraying a coating, namely preparing a mixed solution C and a mixed solution D for spraying, mixing the two components, spraying the mixture on a heavy punch to form an epoxy ceramic coating, adding a specially-made colloidal mixed material B in the preparation process of the mixed solution C and the mixed solution D, wherein the colloidal mixed material B is formed by compounding titanium nitride, zirconium dioxide and mica powder through PVA, titanate coupling agent and the like, the three inorganic particles have high temperature resistance, corrosion resistance and aging resistance after being compounded, the density of the coating can be effectively improved, the compatibility and the bonding strength between the three inorganic particles and a resin matrix are high, the mechanical quality of the coating is well enhanced, in addition, the particles formed by compounding the three inorganic particles are irregular spherical and contain more dendritic bulges, the surface of the heavy punch after being pretreated contains a large number of micro-pit structures, and compared with single filler particles, the composite particles can be more directly and stably embedded into the surface of the heavy hammer sheet and are combined and crosslinked with active groups on the surface of the heavy hammer sheet, so that the combination strength of the coating is effectively improved, the stability and the service life of the coating are further ensured, the composite particles are finally blended with conventional components such as quartz powder and epoxy resin, the mixture is coated on the surface of the heavy hammer sheet through a spray gun, a finished product coating with stable performance is formed through curing treatment, and finally the use quality of the heavy hammer sheet is obviously improved.
Compared with the prior art, the invention has the following advantages:
the invention provides a surface treatment method of a heavy hammer sheet, which has the advantages of simple overall process, easy popularization and application, good mechanical property of the treated heavy hammer sheet, strong corrosion resistance and ageing resistance, high stability of a coating, remarkable prolongation of the comprehensive service life, and high market competitiveness and practical value.
Detailed Description
Example 1
A surface enhancement treatment method for a heavy hammer sheet comprises the following steps:
(1) surface cleaning treatment:
firstly, putting the weight piece into acetone for soaking for 8min, taking out the weight piece after the soaking, washing the weight piece with deionized water once, and drying the weight piece for later use;
(2) shot blasting:
putting the heavy hammer sheet processed in the step (1) into a shot blasting machine for surface shot blasting, taking out the heavy hammer sheet after the surface shot blasting is finished, and blowing off residual particle impurities on the surface by using compressed air for later use;
(3) surface plasma treatment:
putting the heavy hammer slice treated in the step (2) into a low-energy plasma treatment instrument for plasma treatment, and taking out for later use after 15 min;
(4) and (3) coating spraying treatment:
a. mixing titanium nitride and zirconium dioxide according to the weight ratio of 1.5:1, putting the mixture into a roller powder mixer for mixing for 3 hours, and taking out the mixture to obtain mixed powder A for later use;
b. putting mica powder into hydrochloric acid solution, soaking for 3min, filtering, washing with deionized water to neutrality for use;
c. mixing the mixed powder A prepared in the operation a, the mica powder treated in the operation b, powdery PVA, a titanate coupling agent, sodium pyrophosphate, dodecyl trimethyl ammonium bromide, ethylene diamine tetraacetic acid disodium and deionized water according to a weight ratio of 1:2.5:2:0.4: 0.3:0.1: 14, mixing and putting into a high-speed stirrer, and taking out after high-speed stirring treatment for 1.3h to obtain a colloidal mixture B for later use;
d. mixing quartz powder, the colloidal mixture B prepared in the operation C and epoxy resin according to a weight ratio of 18:5:75, performing ultrasonic stirring treatment for 1.8h, and taking out to obtain a mixed solution C for later use;
e. mixing quartz powder, the colloidal mixture B prepared in the operation c and a curing agent correspondingly according to the weight ratio of 15:4:75, and then carrying out ultrasonic stirring treatment for 1.2h and taking out to obtain a mixed solution D for later use;
f. mixing the mixed solution C prepared in the operation D and the mixed solution D prepared in the operation E according to the weight ratio of 1.3:1, putting the mixed solution into a reaction kettle, stirring at the rotating speed of 1500 revolutions per minute for 25min, and taking out the mixed solution to obtain a composite material E for later use;
g. and (E) uniformly spraying the composite material E obtained in the operation f on the surface of the heavy hammer piece treated in the step (3) through a spray gun, putting the heavy hammer piece into a vacuum drying oven for drying treatment, and taking out the heavy hammer piece after the drying treatment is finished.
Further, the drying in step (1) is to put the heavy bob tablet into an environment with a temperature of 100 ℃ for drying treatment for 3 h.
Further, the medium used in the shot blasting in the step (2) is corundum sand, the spraying angle is 90 degrees, and the spraying distance is 70 cm.
Further, the gas medium used in the plasma treatment in the step (3) is nitrogen, the output power of the low-energy plasma treatment instrument is controlled to be 3kW, and the frequency is controlled to be 25 kHz.
Further, the particle sizes of the titanium nitride and the zirconium dioxide in the operation a of the step (4) are 1200 meshes.
Further, the particle size of the mica powder in the operation b of the step (4) is 600 meshes; the mass fraction of the hydrochloric acid solution is 0.2%.
Further, the high speed stirring treatment in operation c of step (4) is carried out while controlling the stirring speed to 2300 rpm.
Further, the ultrasonic agitation treatment in the operation d and the operation e in the step (4) is performed by controlling the frequency of the ultrasonic wave to be 800 kHz.
Further, in the drying treatment in operation g of step (4), the degree of vacuum in the vacuum drying oven was controlled to 1 ~ 10Pa, and the drying temperature was controlled to 65 ℃.
Example 2
A surface enhancement treatment method for a heavy hammer sheet comprises the following steps:
(1) surface cleaning treatment:
firstly, putting the weight piece into acetone for soaking for 9min, taking out the weight piece after the soaking, washing the weight piece with deionized water once, and drying the weight piece for later use;
(2) shot blasting:
putting the heavy hammer sheet processed in the step (1) into a shot blasting machine for surface shot blasting, taking out the heavy hammer sheet after the surface shot blasting is finished, and blowing off residual particle impurities on the surface by using compressed air for later use;
(3) surface plasma treatment:
putting the heavy hammer slice treated in the step (2) into a low-energy plasma treatment instrument for plasma treatment, and taking out for later use after 18 min;
(4) and (3) coating spraying treatment:
a. mixing titanium nitride and zirconium dioxide according to the weight ratio of 1.8:1, putting the mixture into a roller powder mixer for mixing for 4 hours, and taking out the mixture to obtain mixed powder A for later use;
b. putting mica powder into hydrochloric acid solution, soaking for 4min, filtering, washing with deionized water to neutrality for use;
c. mixing the mixed powder A prepared in the operation a, the mica powder treated in the operation b, powdery PVA, a titanate coupling agent, sodium pyrophosphate, dodecyl trimethyl ammonium bromide, ethylene diamine tetraacetic acid disodium and deionized water according to a weight ratio of 1:2.7:2.1:0.6:0.4:0.2: 0.15: 15, mixing and putting into a high-speed stirrer, and taking out after high-speed stirring treatment for 1.4h to obtain a colloidal mixture B for later use;
d. mixing quartz powder, the colloidal mixture B prepared in the operation C and epoxy resin according to a weight ratio of 20:6:77, performing ultrasonic stirring treatment for 2 hours, and taking out to obtain a mixed solution C for later use;
e. mixing quartz powder, the colloidal mixture B prepared in the operation c and a curing agent correspondingly according to the weight ratio of 17:5:78, and then carrying out ultrasonic stirring treatment for 1.4h and taking out to obtain a mixed solution D for later use;
f. mixing the mixed solution C prepared in the operation D and the mixed solution D prepared in the operation E according to the weight ratio of 1.4:1, putting the mixed solution into a reaction kettle, stirring at the rotating speed of 1600 rpm for 28min, and taking out the mixed solution to obtain a composite material E for later use;
g. and (E) uniformly spraying the composite material E obtained in the operation f on the surface of the heavy hammer piece treated in the step (3) through a spray gun, putting the heavy hammer piece into a vacuum drying oven for drying treatment, and taking out the heavy hammer piece after the drying treatment is finished.
Further, the drying in step (1) is to put the heavy bob tablet into an environment with a temperature of 103 ℃ for drying treatment for 3.6 h.
Further, the medium used in the shot blasting in the step (2) is corundum, the spraying angle is 90 degrees, and the spraying distance is 72 cm.
Further, the gas medium used in the plasma treatment in the step (3) is nitrogen, the output power of the low-energy plasma treatment instrument is controlled to be 3.3W, and the frequency is controlled to be 27 kHz.
Further, the particle sizes of the titanium nitride and the zirconium dioxide in the operation a of the step (4) are 1200 meshes.
Further, the particle size of the mica powder in the operation b of the step (4) is 600 meshes; the mass fraction of the hydrochloric acid solution is 0.25%.
Further, in the high-speed stirring treatment in the operation c in the step (4), the rotation speed of stirring is controlled to be 2400 rpm.
Further, the ultrasonic agitation treatment in operation d and operation e of step (4) is performed while controlling the frequency of the ultrasonic wave to be 830 kHz.
Further, in the drying treatment in operation g of step (4), the degree of vacuum in the vacuum drying oven was controlled to 1 ~ 10Pa, and the drying temperature was controlled to 67 ℃.
Example 3
A surface enhancement treatment method for a heavy hammer sheet comprises the following steps:
(1) surface cleaning treatment:
firstly, putting the weight piece into acetone for soaking for 10min, taking out the weight piece after the soaking, washing the weight piece with deionized water once, and drying the weight piece for later use;
(2) shot blasting:
putting the heavy hammer sheet processed in the step (1) into a shot blasting machine for surface shot blasting, taking out the heavy hammer sheet after the surface shot blasting is finished, and blowing off residual particle impurities on the surface by using compressed air for later use;
(3) surface plasma treatment:
putting the heavy hammer slice treated in the step (2) into a low-energy plasma treatment instrument for plasma treatment, and taking out for later use after 20 min;
(4) and (3) coating spraying treatment:
a. mixing titanium nitride and zirconium dioxide according to a weight ratio of 2:1, putting the mixture into a roller powder mixer for mixing for 5 hours, and taking out the mixture to obtain mixed powder A for later use;
b. putting mica powder into hydrochloric acid solution, soaking for 5min, filtering, and washing with deionized water to neutrality;
c. mixing the mixed powder A prepared in the operation a, the mica powder treated in the operation b, powdery PVA, a titanate coupling agent, sodium pyrophosphate, dodecyl trimethyl ammonium bromide, ethylene diamine tetraacetic acid disodium and deionized water according to a weight ratio of 1:3:2.2:0.7:0.5:0.3: 0.2: 16, mixing and putting into a high-speed stirrer, and taking out after high-speed stirring treatment for 1.6h to obtain a colloidal mixture B for later use;
d. mixing quartz powder, the colloidal mixture B prepared in the operation C and epoxy resin according to the weight ratio of 22:7:80, performing ultrasonic stirring treatment for 2.2 hours, and taking out to obtain a mixed solution C for later use;
e. mixing quartz powder, the colloidal mixture B prepared in the operation c and a curing agent correspondingly according to the weight ratio of 18: 6: 80, and then carrying out ultrasonic stirring treatment for 1.6h and taking out to obtain a mixed solution D for later use;
f. mixing the mixed solution C prepared in the operation D and the mixed solution D prepared in the operation E according to the weight ratio of 1.5:1, putting the mixed solution into a reaction kettle, stirring at the rotating speed of 1700 rpm for 30min, and taking out the mixed solution to obtain a composite material E for later use;
g. and (E) uniformly spraying the composite material E obtained in the operation f on the surface of the heavy hammer piece treated in the step (3) through a spray gun, putting the heavy hammer piece into a vacuum drying oven for drying treatment, and taking out the heavy hammer piece after the drying treatment is finished.
Further, the drying in step (1) is to put the weight piece into an environment with a temperature of 105 ℃ for drying treatment for 4 h.
Further, the medium used in the shot blasting in the step (2) is corundum, the spraying angle is 90 degrees, and the spraying distance is 75 cm.
Further, the gas medium used in the plasma treatment in the step (3) is nitrogen, the output power of the low-energy plasma treatment instrument is controlled to be 3.5kW, and the frequency is controlled to be 30 kHz.
Further, the particle sizes of the titanium nitride and the zirconium dioxide in the operation a of the step (4) are 1200 meshes.
Further, the particle size of the mica powder in the operation b of the step (4) is 600 meshes; the mass fraction of the hydrochloric acid solution is 0.3%.
Further, the high speed stirring treatment in operation c of step (4) is carried out while controlling the stirring speed to 2500 rpm.
Further, the ultrasonic agitation treatment in the operation d and the operation e in the step (4) is performed by controlling the frequency of the ultrasonic wave to be 850 kHz.
Further, in the drying treatment in operation g of step (4), the degree of vacuum in the vacuum drying oven was controlled to 1 ~ 10Pa, and the drying temperature was controlled to 70 ℃.
Comparative example 1
This comparative example 1 was compared with example 2, and the surface plasma treatment operation of step (3) was omitted, except that the other process steps were the same.
Comparative example 2
This comparative example 2 was compared with example 2, omitting the preparation and subsequent use of the mixed powder a component in the coating spray treatment operation a of step (4), except that the other process steps were the same.
Comparative example 3
This comparative example 3, compared to example 2, eliminates the preparation and subsequent use of the gum mix B component in the coating spray treatment operation c of step (4), except that the process steps are otherwise the same.
Comparative example 4
The application numbers are: 201510082442.X discloses a process for producing an epoxy ceramic lining of a nodular cast iron pipe, wherein an epoxy ceramic coating disclosed therein is used, and the technical scheme of the embodiment 2 is specifically selected, and the epoxy ceramic is directly and uniformly sprayed on a heavy punch through a spray gun.
In order to compare the effects of the present invention, the weight pieces prepared in the same batch were selected as the test objects, and then surface treatment was performed by the methods corresponding to the above example 2, comparative example 1, comparative example 2, comparative example 3, and comparative example 4, respectively, wherein the thickness of the control coating was 400 μm; then, performing performance test on the processed heavy hammer sheets, setting 5 test samples in each group, and repeating the test for 3 times; specific comparative data are shown in table 1 below:
TABLE 1
Note: the compressive strength of the coatings described in Table 1 above was tested with reference to GB/T1041-1992; the coating impact strength is tested according to ASTM D658-81, specifically, the coating is made into a sample block of 20cm × 20cm × 20cm, 150-mesh silicon carbide particles are selected, 50g of silicon carbide particles are sprayed per minute, the sample block is impacted for one minute, and the mass loss of the sample block is calculated; the acid-resistant duration is the time that a weight piece sample is placed into 6mol/L hydrochloric acid solution for soaking, and the surface of the weight piece sample is observed to have 1% corrosion area; the alkali resistance duration is the time when the weight piece sample is soaked in 6mol/L sodium hydroxide solution and the corrosion area of 1% appears on the surface of the weight piece sample; the bonding strength between the coating and the weight piece substrate is tested by referring to MH/T3027-2013.
As can be seen from the above table 1, the comprehensive performance of the heavy punch piece treated by the method of the present invention is significantly improved, the use stability and the service life are significantly improved, and the heavy punch piece has great market competitiveness and popularization and use values.
Claims (9)
1. A surface enhancement treatment method for a heavy hammer sheet is characterized by comprising the following steps:
(1) surface cleaning treatment:
firstly, putting the weight piece into acetone for soaking for 8 ~ 10min, taking out the weight piece after the soaking, washing the weight piece with deionized water once, and drying the weight piece for later use;
(2) shot blasting:
putting the heavy hammer sheet processed in the step (1) into a shot blasting machine for surface shot blasting, taking out the heavy hammer sheet after the surface shot blasting is finished, and blowing off residual particle impurities on the surface by using compressed air for later use;
(3) surface plasma treatment:
putting the heavy hammer slice treated in the step (2) into a low-energy plasma treatment instrument for plasma treatment, and taking out for standby after 15 ~ 20 min;
(4) and (3) coating spraying treatment:
a. mixing titanium nitride and zirconium dioxide according to a weight ratio of 1.5 ~ 2: 2, putting the mixture into a roller powder mixing machine for mixing for 3 ~ 5h, and taking out to obtain mixed powder A for later use;
b. putting mica powder into hydrochloric acid solution, soaking for 3 ~ 5min, filtering, washing with deionized water to neutrality;
c. mixing the mixed powder A prepared in the operation a, the mica powder treated in the operation B, powdery PVA, a titanate coupling agent, sodium pyrophosphate, dodecyl trimethyl ammonium bromide, ethylene diamine tetraacetic acid and deionized water according to the weight ratio of 1:2.5 ~ 3:2 ~ 2.2.2: 0.4 ~ 0.7.7: 0.3 ~ 0.5.5: 0.1 ~ 0.3.3: 0.1 ~ 0.2.2: 14 ~ 16, putting the mixture into a high-speed stirrer, and stirring the mixture at high speed for 1.3 ~ 1.6h to obtain a colloidal mixed material B for later use;
d. mixing quartz powder, the colloidal mixture B prepared in the operation C and epoxy resin according to the weight ratio of 18 ~ 22:5 ~ 7:75 ~ 80, carrying out ultrasonic stirring treatment for 1.8 ~ 2.2.2 h, and taking out to obtain a mixed solution C for later use;
e. mixing quartz powder, the colloidal mixture B prepared in the operation c and a curing agent correspondingly according to the weight ratio of 15 ~ 18:4 ~ 6:75 ~ 80, and then carrying out ultrasonic stirring treatment for 1.2 ~ 1.6.6 h and taking out to obtain a mixed solution D for later use;
f. mixing the mixed liquor C prepared in the operation D and the mixed liquor D prepared in the operation E according to the weight ratio of 1.3 ~ 1.5:1, putting the mixed liquor into a reaction kettle, stirring at the rotating speed of 1500 ~ 1700 rpm for 25 ~ 30min, and taking out to obtain a composite material E for later use;
g. and (E) uniformly spraying the composite material E obtained in the operation f on the surface of the heavy hammer piece treated in the step (3) through a spray gun, putting the heavy hammer piece into a vacuum drying oven for drying treatment, and taking out the heavy hammer piece after the drying treatment is finished.
2. The method of claim 1, wherein the drying step (1) is carried out by drying the weight piece at 100 ~ 105 ℃ for 3 ~ 4 h.
3. The method of claim 1, wherein the blasting in step (2) is carried out with corundum as a medium, the blasting angle is 90 ° and the blasting distance is 70 ~ 75 cm.
4. The method as claimed in claim 1, wherein the plasma treatment in step (3) is performed with nitrogen gas, the output power of the low-energy plasma processor is controlled to 3 ~ 3.5.5 kW, and the frequency is controlled to 25 ~ 30 kHz.
5. The method of claim 1, wherein the titanium nitride and zirconium dioxide particles in step (4), operation a, are 1200 mesh.
6. The method of claim 1, wherein the mica powder in step (4) is 600 mesh in particle size and the hydrochloric acid solution is 0.2 ~ 0.3.3 wt%.
7. The method of claim 1, wherein the high speed stirring in operation c of step (4) is controlled at 2300 ~ 2500 rpm.
8. The method of claim 1, wherein the ultrasonic agitation treatment in step (4) is performed at a frequency of 800 ~ 850kHz and 850 kHz.
9. The method of claim 1, wherein the drying process in step (4) is performed under a vacuum of 1 ~ 10Pa in the vacuum drying oven at a temperature of 65 ~ 70 ℃.
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| CN201910761830.9A CN110605226A (en) | 2019-08-19 | 2019-08-19 | Surface enhancement treatment method for heavy hammer sheet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725762A (en) * | 2020-06-11 | 2020-09-29 | 安徽省含山县兴建铸造厂 | Superposed combined type weight piece and manufacturing method thereof |
| CN114345669A (en) * | 2022-01-13 | 2022-04-15 | 厦门安晟鑫金属有限公司 | Processing method of penetrating clamp for photovoltaic bracket |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725762A (en) * | 2020-06-11 | 2020-09-29 | 安徽省含山县兴建铸造厂 | Superposed combined type weight piece and manufacturing method thereof |
| CN114345669A (en) * | 2022-01-13 | 2022-04-15 | 厦门安晟鑫金属有限公司 | Processing method of penetrating clamp for photovoltaic bracket |
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