CN106111504A - ERW surface spraying method - Google Patents

ERW surface spraying method Download PDF

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Publication number
CN106111504A
CN106111504A CN201610504829.4A CN201610504829A CN106111504A CN 106111504 A CN106111504 A CN 106111504A CN 201610504829 A CN201610504829 A CN 201610504829A CN 106111504 A CN106111504 A CN 106111504A
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China
Prior art keywords
powder
welded tube
welded
freezing
spraying method
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CN201610504829.4A
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Chinese (zh)
Inventor
王诗斌
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Chaohu Pengyuan Metal Pipe Co Ltd
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Chaohu Pengyuan Metal Pipe Co Ltd
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Priority to CN201610504829.4A priority Critical patent/CN106111504A/en
Publication of CN106111504A publication Critical patent/CN106111504A/en
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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
    • B05D7/146—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 to metallic pipes or tubes
    • 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
    • B05D3/002—Pretreatement
    • 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
    • B05D3/02—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 baking
    • B05D3/0254—After-treatment
    • 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
    • B05D3/04—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 exposure to gases
    • B05D3/0406—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 exposure to gases the gas being air
    • B05D3/0413—Heating with air
    • 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
    • B05D3/04—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 exposure to gases
    • B05D3/0406—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 exposure to gases the gas being air
    • B05D3/0426—Cooling with air
    • 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
    • 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
    • C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/03—Powdery paints
    • C09D5/033—Powdery paints characterised by the additives
    • 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
    • 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
    • C09D5/10—Anti-corrosive paints containing metal dust
    • C09D5/106—Anti-corrosive paints containing metal dust containing Zn
    • 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
    • B05D2202/00—Metallic substrate
    • B05D2202/10—Metallic substrate based on Fe
    • 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
    • B05D2350/00—Pretreatment of the substrate
    • B05D2350/30—Change of the surface
    • 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
    • B05D2508/00—Polyesters
    • 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
    • B05D2601/00—Inorganic fillers
    • B05D2601/02—Inorganic fillers used for pigmentation effect, e.g. metallic effect
    • 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
    • B05D2601/00—Inorganic fillers
    • B05D2601/02—Inorganic fillers used for pigmentation effect, e.g. metallic effect
    • B05D2601/04—Mica
    • 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
    • B05D2601/00—Inorganic fillers
    • B05D2601/20—Inorganic fillers used for non-pigmentation effect
    • 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
    • B05D2601/00—Inorganic fillers
    • B05D2601/20—Inorganic fillers used for non-pigmentation effect
    • B05D2601/26—Abrasives
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

Abstract

A kind of ERW surface spraying method, specifically comprise the following steps that the welded tube having welded and having passed through tempering is sent into ultrasonic washing unit and carried out ultrasonic cleaning by (1), take out after completing and carry out freezing, continuous freezing more than 8 hours in the environment of less than subzero 23 DEG C；(2) welded tube after freezing is taken out feeding heating room, the temperature in heating room was risen to 300 330 DEG C from 0 DEG C at 30 50 minutes, keeps 30 50 minutes；(3) welded tube after heating is sent in temperature-lowering room, send into cold wind from all directions immediately, after rapidly welded tube being cooled to room temperature；(4) anti-corrosive powder paint is sprayed on equably on the surface of welded tube by the mode that the welded tube after cooling uses electrostatic spraying by spray gun；(5) being transferred in bakery by welded tube after spray coated, solidify 10～20 minutes, then natural cooling i.e. can get finished product.Pass through cured so that surface of welded pipe coating material melt, be adhering completely to surface of welded pipe, difficult drop-off.

Description

ERW surface spraying method
Technical field
The present invention relates to coating process technical field, be specifically related to a kind of ERW surface spraying method.
Background technology
ERW, the steel pipe being welded with hot rolling or cold-rolled steel sheet or steel coil strip carries out straight seam welding on welding equipment The pipe obtained all is ERW, (owing to the weld of steel pipe is in alignment so gaining the name).They are different according to purposes, have Different rear road production processes, the standard of ERW is GB/T3091-2008.
Steel pipes with straight is mainly used in public waterworks, petrochemical industry, chemical industry, power industry, agricultural filling at home Irrigate, urban construction.It is used as liquid to carry: feedwater, draining.It is used as gas to carry: coal gas, steam, liquefied petroleum gas.Make structure With: make pile driving pipe, make bridge；Harbour, road, building structure pipe etc..
It is bad that ERW surface antiseptisis technology in the market does, and directly influences the use longevity of ERW Life.
Summary of the invention
The technical problem to be solved is to provide a kind of composition relatively simple, the ERW that spraying effect is good Surface spraying method.
The technical problem to be solved realizes by the following technical solutions:
A kind of ERW surface spraying method, specifically comprises the following steps that
(1) welded tube having welded and having passed through tempering is sent into ultrasonic washing unit and carries out ultrasonic cleaning, take out after completing, Dry inside and outside wall moisture, then freezing, continuous freezing more than 8 hours in the environment of less than subzero 23 DEG C；
(2) welded tube after freezing in step (1) is taken out feeding heating room, by the temperature in heating room from 0 DEG C at 30-50 Minute rise to 300-330 DEG C, keep 30-50 minute, the surface attachment performance improving welded tube with this, improve follow-up spraying powder Cementability；
(3) welded tube after heating in step (2) is sent in temperature-lowering room, send into cold wind from all directions immediately, rapidly will After welded tube is cooled to room temperature；
(4) use the mode of electrostatic spraying that anti-corrosive powder paint is passed through spray gun the welded tube after cooling in step (3) It is sprayed on equably on the surface of welded tube, forms one layer of anticorrosive coat；
(5) being transferred in bakery by welded tube after spray coated, solidify 10～20 minutes, then natural cooling is the most available Finished product.Pass through cured so that surface of welded pipe coating material melt, be adhering completely to surface of welded pipe, difficult drop-off.
Above-mentioned anti-corrosive powder paint is that the component by following weight is formulated: polyester resin 100g, mineral powder 5g, stone Ink alkene microplate 0.1g, sepiolite powder 1g, pigment 5g, nano titanium carbide 10g, selenium powder 0.5g, rare earth oxide 1g, firming agent 0.5g, wax powder 15g, levelling agent 0.5g, brightener 0.5g, zinc powder 5g, calcining wollastonite in powder 1g, modified starch 1g；
The preparation method of above-mentioned anti-corrosive powder paint is as follows:
(1) by polyester resin, mineral powder, sepiolite powder, selenium powder, rare earth oxide, wax powder, zinc powder, calcining wollastonite Powder and modified starch are put in nylon ball grinder, continuous ball milling 4-6 hour, cross 180-200 eye mesh screen, collect and obtain mixed powder Stand-by；
(2) by mixed powder in mixing tank with graphene microchip, pigment, nano titanium carbide, firming agent, levelling agent and light Bright dose of abundant premixing, sends into extruder extrusion tabletting, obtains lamellar material after completing；
(3) lamellar material is pulverized, send in nylon ball grinder, continuous ball milling 4-6 hour, cross 400-600 eye mesh screen, collect Siftage obtains finished product anti-corrosive powder paint.
Described mineral powder selects azurite, potassium feldspar, malachite green, malachite, natural marine stone, hauynite, tourmaline and white One or both or two or more combination in Muscovitum.
Described graphene microchip is to generate graphitic carbon crystal, four of each carbon atom with the three-dimensional long crystalline substance of cellular fashion It is in bond firmly that valency electron all forms covalent bond, it is impossible to forms the electron stream of displacement, then cannot conduct electricity, stone after generation Ink carbon crystal utilizes the nano-milled mode of wet type, grinds with single direction and forms, and graphene microchip minimizing thickness is 5nm, stone Ink alkene microplate strengthens infrared radiation wavelength, and its wavelength peak-peak is in 7.5～9.5 μm.By adding Graphene in coating Microplate, it is possible to reduce surface of welded pipe resistivity, strengthen the degrees of fusion between each component simultaneously.
The invention has the beneficial effects as follows: Welded Pipe of the present invention uses special processing method, improve welded tube overall performance, make Welded tube has corrosion-resistant, impact resistance and wear-resisting effect, by adding rare earth oxide, nanoscale powder material etc., is being impacted Time, anticorrosive coat only can deform will not peeling off phenomenon, etch-proof ability will not be lost, can effectively extend making of welded tube Use the life-span.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below knot Close specific embodiment, the present invention is expanded on further.
Embodiment 1
A kind of ERW surface spraying method, specifically comprises the following steps that
(1) welded tube having welded and having passed through tempering is sent into ultrasonic washing unit and carries out ultrasonic cleaning, take out after completing, Dry inside and outside wall moisture, then freezing, continuous freezing more than 8 hours in the environment of less than subzero 23 DEG C；
(2) welded tube after freezing in step (1) is taken out feeding heating room, by the temperature in heating room from 0 DEG C at 30 points Clock rises to 300 DEG C, keeps 30 minutes, the surface attachment performance improving welded tube with this, improves the cementability of follow-up spraying powder；
(3) welded tube after heating in step (2) is sent in temperature-lowering room, send into cold wind from all directions immediately, rapidly will After welded tube is cooled to room temperature；
(4) use the mode of electrostatic spraying that anti-corrosive powder paint is passed through spray gun the welded tube after cooling in step (3) It is sprayed on equably on the surface of welded tube, forms one layer of anticorrosive coat；
(5) being transferred in bakery by welded tube after spray coated, solidify 15 minutes, then natural cooling i.e. can be become Product.Pass through cured so that surface of welded pipe coating material melt, be adhering completely to surface of welded pipe, difficult drop-off.
Above-mentioned anti-corrosive powder paint is that the component by following weight is formulated: polyester resin 100g, mineral powder 5g, stone Ink alkene microplate 0.1g, sepiolite powder 1g, pigment 5g, nano titanium carbide 10g, selenium powder 0.5g, rare earth oxide 1g, firming agent 0.5g, wax powder 15g, levelling agent 0.5g, brightener 0.5g, zinc powder 5g, calcining wollastonite in powder 1g, modified starch 1g；
The preparation method of above-mentioned anti-corrosive powder paint is as follows:
(1) by polyester resin, mineral powder, sepiolite powder, selenium powder, rare earth oxide, wax powder, zinc powder, calcining wollastonite Powder and modified starch are put in nylon ball grinder, continuous ball milling 4-6 hour, cross 180-200 eye mesh screen, collect and obtain mixed powder Stand-by；
(2) by mixed powder in mixing tank with graphene microchip, pigment, nano titanium carbide, firming agent, levelling agent and light Bright dose of abundant premixing, sends into extruder extrusion tabletting, obtains lamellar material after completing；
(3) lamellar material is pulverized, send in nylon ball grinder, continuous ball milling 4-6 hour, cross 400-600 eye mesh screen, collect Siftage obtains finished product anti-corrosive powder paint.
Described mineral powder selects azurite, potassium feldspar, malachite green, malachite, natural marine stone, hauynite, tourmaline and white One or both or two or more combination in Muscovitum.
Described graphene microchip is to generate graphitic carbon crystal, four of each carbon atom with the three-dimensional long crystalline substance of cellular fashion It is in bond firmly that valency electron all forms covalent bond, it is impossible to forms the electron stream of displacement, then cannot conduct electricity, stone after generation Ink carbon crystal utilizes the nano-milled mode of wet type, grinds with single direction and forms, and graphene microchip minimizing thickness is 5nm, stone Ink alkene microplate strengthens infrared radiation wavelength, and its wavelength peak-peak is in 7.5～9.5 μm.By adding Graphene in coating Microplate, it is possible to reduce surface of welded pipe resistivity, strengthen the degrees of fusion between each component simultaneously.
Embodiment 2
A kind of ERW surface spraying method, specifically comprises the following steps that
(1) welded tube having welded and having passed through tempering is sent into ultrasonic washing unit and carries out ultrasonic cleaning, take out after completing, Dry inside and outside wall moisture, then freezing, continuous freezing more than 8 hours in the environment of less than subzero 23 DEG C；
(2) welded tube after freezing in step (1) is taken out feeding heating room, by the temperature in heating room from 0 DEG C at 50 points Clock rises to 330 DEG C, keeps 50 minutes, the surface attachment performance improving welded tube with this, improves the cementability of follow-up spraying powder；
(3) welded tube after heating in step (2) is sent in temperature-lowering room, send into cold wind from all directions immediately, rapidly will After welded tube is cooled to room temperature；
(4) use the mode of electrostatic spraying that anti-corrosive powder paint is passed through spray gun the welded tube after cooling in step (3) It is sprayed on equably on the surface of welded tube, forms one layer of anticorrosive coat；
(5) being transferred in bakery by welded tube after spray coated, solidify 20 minutes, then natural cooling i.e. can be become Product.Pass through cured so that surface of welded pipe coating material melt, be adhering completely to surface of welded pipe, difficult drop-off.
Above-mentioned anti-corrosive powder paint is that the component by following weight is formulated: polyester resin 100g, mineral powder 5g, stone Ink alkene microplate 0.1g, sepiolite powder 1g, pigment 5g, nano titanium carbide 10g, selenium powder 0.5g, rare earth oxide 1g, firming agent 0.5g, wax powder 15g, levelling agent 0.5g, brightener 0.5g, zinc powder 5g, calcining wollastonite in powder 1g, modified starch 1g；
The preparation method of above-mentioned anti-corrosive powder paint is as follows:
(1) by polyester resin, mineral powder, sepiolite powder, selenium powder, rare earth oxide, wax powder, zinc powder, calcining wollastonite Powder and modified starch are put in nylon ball grinder, continuous ball milling 4-6 hour, cross 180-200 eye mesh screen, collect and obtain mixed powder Stand-by；
(2) by mixed powder in mixing tank with graphene microchip, pigment, nano titanium carbide, firming agent, levelling agent and light Bright dose of abundant premixing, sends into extruder extrusion tabletting, obtains lamellar material after completing；
(3) lamellar material is pulverized, send in nylon ball grinder, continuous ball milling 4-6 hour, cross 400-600 eye mesh screen, collect Siftage obtains finished product anti-corrosive powder paint.
Described mineral powder selects azurite, potassium feldspar, malachite green, malachite, natural marine stone, hauynite, tourmaline and white One or both or two or more combination in Muscovitum.
Described graphene microchip is to generate graphitic carbon crystal, four of each carbon atom with the three-dimensional long crystalline substance of cellular fashion It is in bond firmly that valency electron all forms covalent bond, it is impossible to forms the electron stream of displacement, then cannot conduct electricity, stone after generation Ink carbon crystal utilizes the nano-milled mode of wet type, grinds with single direction and forms, and graphene microchip minimizing thickness is 5nm, stone Ink alkene microplate strengthens infrared radiation wavelength, and its wavelength peak-peak is in 7.5～9.5 μm.By adding Graphene in coating Microplate, it is possible to reduce surface of welded pipe resistivity, strengthen the degrees of fusion between each component simultaneously.
Anticorrosive paint of the present invention detection analysis result is as follows:
(1) adhesive force/level: 1-2；Covering power (g/m2): 630；Hardness: ＞ 6H.
(2) resistance to water (50d): unchanged；Wet-heat resisting (80 DEG C, 100%RH30d) is unchanged；Resistance to gasoline (30d): without becoming Change；Salt water resistance: (3% saline room temperature 50d) is unchanged；Salt spray resistance (1000h) is non-foaming, wrinkle resistant.
(3) electric conductivity (resistivity) ＜ 80 Ω/cm.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.The technology of the industry Personnel, it should be appreciated that the present invention is not restricted to the described embodiments, simply illustrating this described in above-described embodiment and description The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these become Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and Equivalent defines.

Claims (6)

1. an ERW surface spraying method, it is characterised in that specifically comprise the following steps that
(1) welded tube welding completed is sent into ultrasonic washing unit and is carried out ultrasonic cleaning, takes out after completing, and dries inside and outside wall water Point, then freezing, continuous freezing more than 8 hours in the environment of less than subzero 23 DEG C；
(2) welded tube after freezing in step (1) is taken out feeding heating room, by the temperature in heating room from 0 DEG C at 30-50 minute Rise to 300-330 DEG C, keep 30-50 minute；
(3) welded tube after heating in step (2) is sent in temperature-lowering room, send into cold wind from all directions immediately, rapidly by welded tube After being cooled to room temperature；
(4) mode that the welded tube after cooling in step (3) uses electrostatic spraying is uniform by spray gun by anti-corrosive powder paint Be sprayed on the surface of welded tube, form one layer of anticorrosive coat；
(5) being transferred in bakery by welded tube after spray coated, solidify 10～20 minutes, then natural cooling i.e. can be become Product.
ERW surface spraying method the most according to claim 1, it is characterised in that above-mentioned anti-corrosive powder paint be by The component of following weight is formulated: polyester resin 100g, mineral powder 5g, graphene microchip 0.1g, sepiolite powder 1g, pigment 5g, nano titanium carbide 10g, selenium powder 0.5g, rare earth oxide 1g, firming agent 0.5g, wax powder 15g, levelling agent 0.5g, brightener 0.5g, zinc powder 5g, calcining wollastonite in powder 1g, modified starch 1g.
ERW surface spraying method the most according to claim 2, it is characterised in that described mineral powder selects stone One or both or two kinds in green grass or young crops, potassium feldspar, malachite green, malachite, natural marine stone, hauynite, tourmaline and white mica with On combination.
4. the preparation method of anti-corrosive powder paint described in a Claims 2 or 3, it is characterised in that step is as follows:
(1) by polyester resin, mineral powder, sepiolite powder, selenium powder, rare earth oxide, wax powder, zinc powder, calcining wollastonite in powder and Modified starch is put in nylon ball grinder, continuous ball milling 4-6 hour, crosses 180-200 eye mesh screen, and collection obtains mixed powder and treats With；
(2) by mixed powder in mixing tank with graphene microchip, pigment, nano titanium carbide, firming agent, levelling agent and brightener Fully premixing, sends into extruder extrusion tabletting, obtains lamellar material after completing；
(3) lamellar material is pulverized, send in nylon ball grinder, continuous ball milling 4-6 hour, cross 400-600 eye mesh screen, under collection screen Thing obtains finished product anti-corrosive powder paint.
ERW surface spraying method the most according to claim 1, it is characterised in that in described step (5) during solidification Between be 15 minutes.
ERW surface spraying method the most according to claim 1, it is characterised in that the welded tube in described step (1) It it is the welded tube after temper.
CN201610504829.4A 2016-06-29 2016-06-29 ERW surface spraying method Pending CN106111504A (en)

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CN107384149A (en) * 2017-08-01 2017-11-24 巢湖鹏远金属焊管有限公司 A kind of ERW rust preventive paint technique and its spray painting used
CN107446468A (en) * 2017-08-01 2017-12-08 巢湖鹏远金属焊管有限公司 A kind of acidproof lacquer spraying technique of ERW and its spray painting used
CN113714937A (en) * 2021-09-11 2021-11-30 安徽军明机械制造有限公司 Treatment process for reducing burr production in resistance welding process of steel member

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107384149A (en) * 2017-08-01 2017-11-24 巢湖鹏远金属焊管有限公司 A kind of ERW rust preventive paint technique and its spray painting used
CN107446468A (en) * 2017-08-01 2017-12-08 巢湖鹏远金属焊管有限公司 A kind of acidproof lacquer spraying technique of ERW and its spray painting used
CN113714937A (en) * 2021-09-11 2021-11-30 安徽军明机械制造有限公司 Treatment process for reducing burr production in resistance welding process of steel member

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Application publication date: 20161116