This standard specifies the commonly used terms in coating technology and their definitions or explanations. GB 8264-1987 Coating Technology Terminology GB8264-1987 Standard download decompression password: www.bzxz.net
This standard specifies the commonly used terms in coating technology and their definitions or explanations.

National Standard of the People's Republic of China
Glossary of painting terms
This standard specifies the commonly used terms in painting technology and their definitions or explanations. 1 General terms
1.1 Painting
UDC 621.795
GB 8264-- 87
The process of applying paint to the surface of a substrate to form a coating with protection, decoration or special functions is also called paint application. 1.2 Basis materials
A material applied or deposited on its surface is also called a base material. If this material is a metal, it is called a base metal. 1.3 Substrate
The surface of the substrate, which may be without a cover layer or with a cover layer. 1.4 Electrodeposition
A process in which a conductive workpiece is used as one of the electrodes of the electrophoretic coating working tank under the action of an external electric field. 1.5 Auto-deposition
The process of depositing a substance on an object by chemical action is also called chemical deposition. 1.6 Electrophoresis
Directed movement of particles suspended in a liquid medium under the action of an external electric field. 2 Surface pretreatment
2.1 Surface pretreatment
Surface pretreatment
Before painting, the process of removing foreign matter attached to the substrate surface or generated foreign matter to improve the adhesion between the substrate surface and the coating or to give the surface a certain corrosion resistance is also called pretreatment. 2.2 Mechanical pretreatmentmechanical pretreatmentThe process of removing foreign matter from the substrate surface during painting using hand tools, power tools or spraying, shot blasting, granules, etc. 2.3 Chemical pretreatmentchemical pretreatmentThe process of removing foreign matter from the substrate surface or forming a conversion film using chemical methods before painting. 2.4 Electrochemical pretreatmentelectrochemical pretreatmentThe process of removing foreign matter from the substrate surface or forming a conversion film using electrochemical methods before painting. 2.5 Degreasing
The process of removing oil stains from the surface of a substrate.
2.6 Chemical degreasing The process of removing oil stains from the surface of a substrate by chemical methods. 2.7 Electrochemical degreasing The process of removing oil stains from the surface of a substrate by electrochemical methods. 2.8 Soak degreasing
The process of cleaning by immersing the workpiece in a cleaning agent without adding an external current. Approved by the National Bureau of Standards on October 15, 1987
Implemented on July 1, 1988
2.9 Spray degreasing GB 8264—87
The process of removing oil stains from the surface of a workpiece by spraying a degreasing agent. 2.10 Ultrasonic degreasing The process of removing oil stains from the surface of a workpiece by accelerating the use of ultrasonic vibrations. 2.11 Derusting
The process of removing rust products from the surface of a steel substrate. 2.12 Trim
The process of removing burrs, nodules, welding slag and sharp edges on the substrate to make it suitable for painting. 2.13 Pickling
The process of washing away rust and rolling skin on the substrate surface with acid. 2.14 Flame cleaning The process of briefly burning the steel structure with a reducing flame and then cleaning it with a powered wire brush. 2.15 Hand tool cleaning The process of removing foreign matter from the substrate surface with hand tools. 2.16 Power tool cleaning The process of removing foreign matter from the substrate surface with power tools. 2.17 BlastingWww.bzxZ.net
The process of cleaning and roughening the substrate surface by the impact of a high-speed abrasive stream. 2.18 Dry blasting
The process of cleaning and roughening the substrate surface by the impact of a high-speed dry abrasive stream. The process of removing waste abrasive or grinding debris by using a vacuum system around the nozzle is called vacuum dry blasting.
2.19 wet blasting
The process of cleaning and roughening a surface by the impact of a high-speed stream of abrasive and water. 2.20 sand blasting
The process of cleaning and roughening a substrate surface by the impact of a high-speed stream of sand. 2.21 shot blasting
The process of cleaning and strengthening a substrate surface by the impact of a high-speed stream of shot. 2.22 rusting grade
The degree of rust on a steel surface.
2.23 derusting grade
The degree of rust removal on a steel surface. 2.24 abrasive
A natural or synthetic solid material used as a blasting medium. 2.25 grit
An abrasive with angular or irregularly shaped particles used for blasting. 2.26 Shot
A spherical abrasive used for blasting. 2.27 Depainting
The process of removing old and damaged coatings in preparation for repainting. 2.28 Surface conditioning The process of converting a surface into a suitable state for successful treatment in subsequent processes. 2.29 Conversion treatment The chemical or electrochemical process of producing a film composed of compounds of the substrate surface metal. 429
2.30 Phosphating
GB 8264-—87
The process of forming an insoluble phosphate film on the surface of the substrate metal using a solution containing phosphoric acid or a phosphate salt. 2.31 Chromatization
The process of forming a chromate conversion film on the surface of the substrate metal using an acid solution of a hexavalent chromium or trivalent chromium compound. 2.32 Passivating
The process of making the surface of the substrate metal passive. 2.33 Integral treatment is the process of removing oil and rust or removing oil, rust and phosphating together. 2.34 Temporary protection is the temporary protection of the substrate surface after surface pretreatment before applying the specified coating when its cleanliness has not changed. 3 Painting method
3.1 Manual brushing
The method of painting with a paint brush. 3.2 Air spraying
The method of painting with compressed air to atomize the paint and spray it onto the substrate surface. 3.3 High-pressure airless spraying is the method of using power to pressurize the paint and expand it rapidly to achieve atomization and painting. 3.4 Hot spraying
The method of painting with heating to reduce the viscosity of the paint to achieve the viscosity required for spraying. 3.5 Electrostatic spraying Electrostatic spraying is a coating method that uses the principle of corona discharge to make the atomized paint negatively charged under the action of a high-voltage DC electric field, and adsorbs on the surface of a positively charged substrate to discharge.
3.6 Electrostatic powder spraying Electrostatic powder spraying is a coating method that uses the principle of corona discharge to make the atomized powder paint negatively charged under the action of a high-voltage electric field, and adsorbs on the surface of a positively charged substrate to discharge.
3.7 Flame spraying Flame spraying is a coating method that melts or semi-melts the paint powder through the high-temperature zone of the flame nozzle and sprays it onto the preheated substrate surface for coating. 3.8 Automatic spraying Automatic-spraying is a spraying method that uses electrical or mechanical principles (manipulators or robots) to automatically control. 3.9 Electrophoretic coating Electro-coating is a coating method that uses an external electric field to make the pigments and resin particles suspended in the electrophoretic liquid migrate in a directional manner and deposit on the substrate surface of one of the electrodes.
3.10 Anode electro-coating A coating method that uses an external electric field to make the pigment and resin particles suspended in the electrophoretic liquid migrate in a directional manner and deposit on the surface of the anode substrate.
3.11 Cathode electro-coating A coating method that uses an external electric field to make the pigment and resin particles suspended in the electrophoretic liquid migrate in a directional manner and deposit on the surface of the cathode substrate.
3.12 Autophoresis coating A coating method that uses a chemical reaction to make the coating automatically deposit on the surface of the substrate. 3.13 Dipping
A coating method that immerses the workpiece in the coating, takes it out, and removes the excess coating. 430
3.14 Flow painting
GB 8264—87
A coating method that sprays or flows the coating over the surface of the workpiece. 3.15 Tompoming
A method of rubbing and coating by repeatedly circling a ball of paint, also known as rubbing or rubbing. 3.16 Curtain paintingA coating method in which the workpiece is continuously passed through a continuously flowing curtain of paint. 3.17 Roller painting
A coating method in which a roller dipped in paint is rolled on the surface of the workpiece. 3.18 Barrel enamellingA coating method in which the workpiece is placed in a conical roller filled with baking varnish, the roller is rotated until all the painted parts are coated, and the roller is allowed to continue rotating in the heat until the coating film is dry.
3.19 Centifugal enamelling
A coating method in which the workpiece is placed in a conical screen sleeve, dipped in a paint tank, lifted up and dripped dry, and the screen sleeve is rotated at high speed to shake off the excess paint on the workpiece.
fluidized bed painting
3.20 Fluidized bed painting
Powder coating is placed in a cylindrical or rectangular container equipped with a porous partition. Compressed air passes through the partition from the bottom, suspending the coating particles on the partition into a boiling liquid. This method is also called fluidized bed painting. 3.21 Fluidized bed electrostatic painting is a fluidized bed painting method that uses electrostatic action. 3.22 Powder electro-deposition is an electrophoretic painting method that disperses a certain particle size of powder coating in an aqueous solution containing electrophoretic resin, and under the action of a DC electric field, the powder coating is deposited on the surface of the substrate through the carrier effect of the electrophoretic resin. 3.23 Hot melt painting is a painting method in which the workpiece is preheated to a temperature exceeding the melting point of the powder coating and then sprayed. 3.24 Coil painting
The workpiece enters the painting process in a coiled form, and after the coil is opened, the pre-treatment painting and curing are completed, and finally the workpiece becomes a coil again. 3.25 Robot painting
Automatic painting using robots or manipulators instead of manual labor. 3.26 Colour changing
The process of changing from spraying one colour of paint to spraying another colour of paint during spraying. 3.27 Priming
The process of applying primer.
3.28 Puttying
The process of scraping and filling putty.
3.29 Grinding
The process of making the coating film smooth using sandpaper, sandpaper, pneumatic tools, etc. 3.30 Topcoating
The process of applying a topcoat on a base layer or an intermediate layer. 3.31 Glazing
The process of applying one or more coats of varnish on the surface to increase or improve the gloss of the coating. 3.32 Paint mixing
The process of mixing the original paint solution to the viscosity or color that meets the construction requirements before painting. Masking
3.33 Masking
GB 8264--87
The process of covering the adjacent parts that do not need to be painted with appropriate methods and materials. 3.34 Wet on wet
The coating method of applying the next coat on the previous uncured coating and finally drying and curing them together. 3.35 Detearing
The process of removing excess paint liquid on the workpiece, for example, drip drying, spin drying, and electrostatic drip removal. 3.36 Flash off
The process of evaporating most of the volatile solvents in the wet coating so that it can be re-coated or baked. 3.37 Flash off time
The time interval between wet-to-wet contact, or the time to evaporate most of the solvent before baking. 3.38 Repair
The process of locally applying filler or coating to correct surface defects or damaged old coatings. 3.39 Polishing
The process of pushing and rubbing the coating to make it bright.
3.40 Tacring
The process of wiping foreign matter off the surface of the workpiece with a sticky cloth before spraying the topcoat. 3. 41 Throwing power
Under certain conditions, the ability of electrophoretic coatings to deposit coatings on the parts of the workpiece that are away from the electrode (inner surface, concave surface, gaps, etc.). 3.42 Interval between coatings The time interval between coatings on the previous coating. 3.43 Applicable viscosity The viscosity of the coating suitable for a certain construction method. 3. 44 thinner ratio
The ratio of the paint stock solution to the thinner required to adjust the paint stock solution to a certain construction viscosity. 3. 45 cathode/anode ratioThe ratio of the area of ​​the cathode to the anode in electrophoretic coating. 3. 46 quantity for sprayThe volume of paint sprayed per unit time. 3.47 deposition conditionsThe general term for the process conditions such as voltage, current and time used to deposit a coating that meets the specified requirements in electrophoretic coating. 3.48 painting environmentThe general term for environmental conditions such as coating temperature, humidity, lighting, air cleanliness, fire and explosion prevention. 3.49 spreading rate
The area that can be coated with a unit volume of paint. 3. 50 spray booth
A closed or semi-closed device that can prevent the paint mist from scattering or capture the paint mist during the painting operation. 3.51 spray gun
A tool for atomizing and spraying paint onto a substrate surface. 3.52 coil coater
A device for coating coiled materials.
3.53 painting brush
A brush for coating with paint.
3.54 spatula
A tool for scraping putty.
3.55 rack
A rack for suspending workpieces during coating.
3.56 busbar
GB 8264—87
A conductive copper or aluminum bar connecting a rectifier (or DC motor) to an electrophoresis tank. 3.57 powder feeder
A device for conveying and controlling powder coating for spraying. 3.58 Ultrafiltration system A closed-loop flushing system consisting of an ultrafiltration device, an electrophoresis tank and post-rinsing equipment. 3.59 Cathode cell
A cover for hanging the cathode that is impermeable to pigments and resins and is used to control the pH of the electrophoresis liquid and remove impurity ions in anodic electrophoretic coating. This cover is made of a semipermeable membrane.
3.60 Overspray
The scattered paint mist that does not adhere to the surface of the substrate during spraying. 4 Drying and curing
4.1 Curing
The condensation, polymerization or self-oxidation process of forming a continuous coating with the required properties from the coating due to thermal, chemical or light effects.
4.2 Drying
The process of the coating changing from a liquid state to a solid state. 4.3 Surface dry
The process of the coating changing from a liquid state to a thin, soft and non-sticky film formed on the surface. 4.4.dust-free dry
The state in which the coating changes from a liquid state to a state in which dust does not stick to the surface. 4.5 dry to tach
The state in which the coating changes from a liquid state to a state in which the surface does not show indentations or feel sticky when lightly pressed by fingers. 4.6hard dry
The state in which the coating changes from a liquid state to a state in which the surface does not feel sticky when pressed by fingers and can be brushed. 4.7drying time
The time in which a coating of a certain thickness reaches a specified dry state from a liquid state under certain conditions. 4.8stoving
The process of drying and curing a wet coating by heating. 4.9air drying
The process in which a wet coating naturally dries and cures when exposed to air at room temperature. 4.10infra-red dryingThe process of drying and curing a wet coating by using an infrared radiation source. 4.11convection dryingThe process of convection drying and curing a wet coating by using hot air. 4.12 Combination drying Combination drying The process of drying and curing the wet coating by using the combined effects of convection and thermal radiation. 4.13 Oxidation drying Oxidation drying The process of drying and curing the wet coating by oxidative polymerization with oxygen in the air. 4.14 Hot polymerization drying Hot polymerization drying 433 GB 8264-87 The process of drying and curing the wet coating resin by heating and polymerization, also called thermal curing. 4.15 Catalytic polymerization drying Catalysis polymerization drying The process of drying and curing the wet coating resin by using a catalyst to polymerize, also called catalytic curing. 4.16 Electron beam curing Electron beam curing The process of drying and curing the wet coating by using electron beam radiation to generate active free radicals to initiate polymerization, also called electron beam polymerization drying. 4.17 Photo-curing Photo-curing The process of drying and curing the wet coating by using light of a certain wavelength to induce polymerization, also called photo-polymerization drying. 4.18 Electromagnetic induction drying Electromagnetic induction drying is a process that uses industrial frequency or high frequency current to create a fast pulsating magnetic field inside the conductor circuit, so that the surface of the workpiece placed in the magnetic field generates an induced current to accelerate the drying of the wet coating.
4.19 Ultraviolet curing is a process that uses ultraviolet rays to dry and cure wet coatings. Overbaking
4.20 Overbaking
The coating is overbaked and becomes brittle, burnt, and other undesirable phenomena. 5 Coating
5.1 Coating
-a continuous film layer obtained by one coating.
5.2 Film
Coating-a continuous film layer formed by one or more coatings. 5. 3 Coating system Coating system
A system composed of the same or different coatings. 5.4 Primer
The coating below the intermediate layer or surface layer in the coating system, or the coating directly applied to the substrate surface. 5.5 intermediate coat intermediate coat intermediate coat between the base coat and the top coat in a coating system. 5.6 topcoat coating between the intermediate coat and the base coat in a coating system. 5.7 finish coat clear coat used to increase or improve the gloss of a coating. 5.8 decorative coat decorative coat a coating used primarily for decoration. 5. 9 anti-corrosive coat a coating used primarily to prevent corrosion of the substrate. 5. 10 functional coat a coating with a specific function. 5.11 appearance of coat visible to the naked eye. 5.12 gloss optical property of a coating surface characterized by its ability to reflect light. 5.13 adhesion the sum of the bonding forces between a coating and the substrate.
5. 14 Hardness of film434
The ability of the film to resist mechanical action.
5.15 Thickness of dry film Thickness of dry film.
Ethickness of wet film
5.16 Thickness of wet film
The thickness of wet film.
5. 17 Corrosion resistance The ability of the film to resist corrosion damage.
5.18 Durability
GB 8264--87
The ability of the film to resist the destructive effects of the environment in which it is located. 5.19 Light fastness
The ability of the film to maintain its characteristics under the action of light. 5.20 Anti-rusting
The ability of the film to prevent rusting of iron and its alloy materials or parts. 5.21 Print resistance The ability of a coating to resist being pressed down by an object on its surface. 5.22 Flexibility
The ability of a coating to adapt to the deformation and movement of its carrier. 5.23 Mildew (fungus) resistance The ability of a coating to resist the growth of fungi on it. 5.24 Flaking resistance The ability of a coating to resist flaking from the bottom surface. 5.25 Filiform corrosion resistance The ability of a coating to resist filiform corrosion.
5.26 Cracking resistance
The ability of a coating to resist cracking.
5.27 Chalking resistance The ability of a coating to resist the generation of chalky powder on its surface. 5.28 Scratch resistance The ability of a coating to resist damage from various abrasive particles and pressure. 5.29 Wear resistance
The ability of the coating to resist abrasion.
5.30 Anti-fouling
The ability of the coating surface to prevent the growth and attachment of harmful organisms. 5. 31 Solvent resistance Solvent resistance The ability of the coating to resist solvents.
5. 32 Oil resistance Oil resistance
The ability of the coating to resist oils.
E Water resistance
5. 33 Water resistance
The ability of the coating to resist water.
5.34 Chemical resistance Chemical resistance The ability of the coating to resist acids, alkalis and salts. 5.35 Chipping resistance The ability of the coating to resist local chipping caused by impact. 435
5.36 Weathering resistance
The ability of the coating to resist atmospheric environment.
5.37 Humidityresistance The ability of the coating to resist the effects of humidity and heat.
5.38 Ageing resistance The ability of the coating to resist the effects of aging.
5.39 Heat resistance
The ability of the coating to resist the effects of heat.
5.40 Washability
The ability of the coating to resist damage caused by decontamination and washing. 5.41 Impact resistance The ability of the coating to resist the effects of impact.
5.42 Grindability
GB 8264 -87
The ability of the coating surface to be smoothed by sandpaper, emery cloth or other grinding materials. 5.43 Cissing
The phenomenon that the wet coating shrinks locally, resulting in a missed coating area or a thinned coating. 5.44 Brush mark
The phenomenon of strip-like protrusions that appear after the coating is dried. 5.45 Blistering
The phenomenon of coating film peeling off and forming an arch or bubble.
5.46 Bleeding
The phenomenon of paint film discoloration caused by the migration of color between coatings. 5.47 Bloading
The phenomenon of soluble colored substances in the coating film diffusing out of the coating. 5.48 Creeping
The phenomenon of wet coating film spreading beyond the original coating area. 5.49 After tack
The phenomenon of dry coating film becoming viscous again. 5.50 Blushing
The phenomenon of whitening or tarnishing of organic coating film generally caused by moisture and frost. 5. 51 Orange peel
The wrinkled surface layer similar to orange peel on the coating film. 5.52 Edge tracking
The traces on the coating film along the roller coating machine roller track. 5.53 Yellowing
The phenomenon that the coating, especially the white coating or varnish layer, turns yellow during the aging process. 5.54 Wrinkling
The phenomenon that the coating film folds up during the drying process, usually due to the surface drying too quickly. 5.55 Pinholing
The phenomenon that small holes are produced in the coating film during the coating and drying process. 5.56 Peeling
The phenomenon that the coating film spontaneously detaches.
5.57 Sagging
GB8264—87
The phenomenon that the lower edge of the coating film is thicker during the coating and curing period. 5.58 Weathering
The change of the coating film under the influence of the atmospheric environment. 5.59 Atmospheric expose test A test in which the specimen is exposed to atmospheric conditions and is intended to study the degree and state of corrosion and contamination in different environments. 5.60 Accelerated weathering test A laboratory test that simulates and intensifies the destructive effects of natural outdoor climate on the specimen, also known as artificial aging test, that is, a laboratory test in which the specimen is exposed to artificial natural climate components. 5.61 Humidity cabinet test A test in which the specimen is subjected to a constant temperature and humidity chamber to check its resistance to humidity and heat, also known as humidity chamber test. Additional notes:
This standard was proposed by Wuhan Institute of Material Protection. This standard is under the jurisdiction of the National Technical Committee for Standardization of Metal and Non-metallic Coverings. This standard was drafted by Wuhan Institute of Material Protection, Hunan University, and Wuhan Institute of Technology. The drafters of this standard are Yang Mingan, Huang Minghua, Chen Minqiao, and Zhang Xuemin. 437
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