CN116116682A - Color surface treatment method for short tail pulling rivet and rivet manufactured by same - Google Patents
Color surface treatment method for short tail pulling rivet and rivet manufactured by same Download PDFInfo
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- CN116116682A CN116116682A CN202211584353.1A CN202211584353A CN116116682A CN 116116682 A CN116116682 A CN 116116682A CN 202211584353 A CN202211584353 A CN 202211584353A CN 116116682 A CN116116682 A CN 116116682A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004381 surface treatment Methods 0.000 title claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 87
- 238000000576 coating method Methods 0.000 claims abstract description 87
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 238000002360 preparation method Methods 0.000 claims abstract description 21
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000007689 inspection Methods 0.000 claims abstract description 17
- 238000005461 lubrication Methods 0.000 claims abstract description 17
- 238000003618 dip coating Methods 0.000 claims abstract description 16
- 150000003839 salts Chemical class 0.000 claims abstract description 16
- 238000005238 degreasing Methods 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims abstract description 11
- 239000000314 lubricant Substances 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 239000000428 dust Substances 0.000 claims abstract description 9
- 230000007935 neutral effect Effects 0.000 claims abstract description 9
- 238000005245 sintering Methods 0.000 claims abstract description 9
- 230000001050 lubricating effect Effects 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 43
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000005260 corrosion Methods 0.000 claims description 7
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 238000005422 blasting Methods 0.000 claims description 5
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910000611 Zinc aluminium Inorganic materials 0.000 claims description 4
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical class [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- DQIPXGFHRRCVHY-UHFFFAOYSA-N chromium zinc Chemical compound [Cr].[Zn] DQIPXGFHRRCVHY-UHFFFAOYSA-N 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 3
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 3
- 239000002202 Polyethylene glycol Chemical class 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 3
- 238000007865 diluting Methods 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 150000002334 glycols Chemical class 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 3
- RYZCLUQMCYZBJQ-UHFFFAOYSA-H lead(2+);dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Pb+2].[Pb+2].[Pb+2].[O-]C([O-])=O.[O-]C([O-])=O RYZCLUQMCYZBJQ-UHFFFAOYSA-H 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229920001223 polyethylene glycol Chemical class 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004327 boric acid Substances 0.000 claims description 2
- 239000013530 defoamer Substances 0.000 claims description 2
- 238000011049 filling Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 7
- 239000002912 waste gas Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000013508 migration Methods 0.000 abstract description 2
- 230000005012 migration Effects 0.000 abstract description 2
- 238000003672 processing method Methods 0.000 abstract 3
- 239000010410 layer Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000007127 saponification reaction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
- B05D5/065—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones
- B05D5/066—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones achieved by multilayers
-
- 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
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
- B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate 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
- 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
-
- 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
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/04—Rivets; Spigots or the like fastened by riveting
- F16B19/08—Hollow rivets; Multi-part rivets
-
- 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
- B05D2518/00—Other type of polymers
-
- 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
- B05D2601/28—Metals
-
- 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
- B05D2602/00—Organic fillers
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Spectrometry And Color Measurement (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a color surface treatment method of a short tail pulling rivet and a rivet manufactured by the same. The processing method comprises the following steps: the coating liquid preparation comprises preparation equipment, coating liquid preparation and coating liquid preparation; the product coating comprises the steps of degreasing, rust removal, dust removal, coating, pre-baking and sintering; the color lubrication film comprises color lubricant configuration and lubrication dip coating; a quality inspection step; the method comprises appearance inspection, film thickness detection, neutral salt spray test and riveting test. The processing method solves the problem of riveting leakage of the railway freight car by adopting a processing method without waste liquid, waste residue and waste gas emission, improves the inspection efficiency and reliability, realizes the migration and color change of the color film layer through the sliding action of the surface lubricating layer, and thoroughly solves the quality problem of riveting leakage of the rivet; the method is not influenced by the size of the salient points on the flange plate of the product, the arrangement density of the short tail rivet products and the intensity of light on a construction site, and the accuracy and the efficiency of quality judgment are improved.
Description
Technical Field
The invention belongs to the technical field of surface treatment of a short tail pulling rivet of a fastener, relates to a rivet surface treatment process technology, and particularly relates to a surface treatment method for preventing riveting leakage due to color change of a film layer before and after riveting of the short tail pulling rivet.
Background
The short tail rivet is fastened and connected in the railway and the railway vehicles to obtain a large amount of use, so that a basic support is provided for the large acceleration of the railway freight car, and the driving safety is ensured. The collar part of the short-tail pulling rivet is provided with a small section of screw teeth, so that the short-tail pulling rivet has a preliminary pre-tightening function, the short-tail pulling rivet can be fastened by means of riveting by a special tool, but in a specific use process, the product subjected to preliminary pre-tightening is close to the non-riveted appearance, and the phenomenon of riveting leakage is easy to occur. The initially pre-tensioned but not riveted product may loosen and fall off during operation of the vehicle.
Disclosure of Invention
The invention discloses a color surface treatment method for a short tail pulling rivet and the rivet manufactured by the same according to the defects of the prior art. The invention aims to solve the problem of riveting leakage of a railway wagon, and provides a surface treatment method without discharge of waste liquid, waste residue and waste gas.
The invention is realized by the following technical scheme:
the color surface treatment method of the short tail pulling rivet is characterized by comprising the steps of coating liquid preparation, product coating, color lubrication film and quality inspection;
step S1, coating liquid preparation; the method comprises the steps of preparing equipment, preparing a coating liquid and preparing the coating liquid;
1.1 configuration equipment: stirring and dispersing equipment is adopted;
1.2 preparation of a coating liquid: the coating liquid consists of A, B, C three components: a component: silver ash to silver white slurry formed by mixing ultrafine flaky zinc, ultrafine flaky aluminum and polyethylene glycol compounds; and the component B comprises the following components: hexavalent chromium, a PH regulator and an auxiliary agent; and C, component: a tackifier; the mass ratio of A to B to C is 1:1.5:0.005.
1.3, coating liquid preparation: respectively regulating the temperature of A, B components to 25-28 ℃ and stirring uniformly, firstly pouring one third of the B component into the A component and stirring uniformly, and then pouring the rest B component into the A component and stirring uniformly; controlling the reaction temperature to be 32-40 ℃; stirring for 1 hr, slowly adding component C, stirring for more than 12 hr, and detecting viscosity, pH value, specific gravity, and Cr of the coating solution 6+ The content and the dispersion effect are filtered by a stainless steel filter screen with 80-100 meshes for standby after being checked to be qualified;
s2, coating a product; comprises the steps of degreasing, rust removal, dust removal, coating, pre-baking and sintering;
2.1 degreasing: adopting phosphorus-free weak alkaline degreasing powder to degrease the surface of the rivet collar;
2.2 rust removal and dust removal: adopting a shot blasting mode to remove rust and dust on the surface of the rivet collar;
2.3 coating: the method comprises the steps of coating in a dip-coating mode, putting a short tail rivet product into a dip-coating column, controlling the viscosity of zinc-chromium or zinc-aluminum coating liquid to be 55-75 seconds, dipping for 1 minute, and centrifuging at a speed of 200 revolutions per minute; and placing the dip-coated product on a mesh belt for baking.
2.4 pre-baking: pre-baking for 15 minutes at 180 ℃ after coating to evaporate water in the coating liquid and uniformly leveling;
2.5 sintering: sintering at 360 ℃ for 40min after pre-baking;
step S3, a color lubricating film; comprises the steps of color lubricant configuration and lubrication dip-coating;
3.1 color Lubricant configuration: diluting the aqueous silicon-based lubricant according to a ratio of 1:5, adding 10% of aqueous color paste, and uniformly stirring; the color paste is green or other colors, the fineness is less than 5.5um, and the light resistance is 8-level;
3.2 lubrication dip coating: filling the coated product into blue and immersing the product into color lubricating liquid for more than 10 seconds; after lubrication and dip coating, putting the mixture into a centrifuge to remove excessive coating liquid, and drying the mixture at 80 ℃ for 20 minutes; preparing a short tail pulling rivet with the surface prepared by coating;
s4, quality inspection; the method comprises appearance inspection, film thickness detection, neutral salt spray test and riveting test.
In the step S4, the appearance inspection, the film thickness detection, the neutral salt spray test and the riveting test specifically comprise:
4.1 appearance inspection: the product color is uniform, no coating leakage exists, the coating is continuous, the defects of bubbles, flaking, pits, inclusions and the like exist, the thickness of the coating is uniform, and the phenomenon of obvious local excessive thickness does not exist;
4.2 film thickness detection: magnetic thickness measurement is carried out according to GB/T4956-2003 magnetic hair for measuring thickness of non-magnetic coating layer on magnetic substrate, and the thickness of the coating layer is more than 8 micrometers;
4.3 neutral salt spray test: according to GB/T10125 salt fog test of artificial atmosphere corrosion test, the salt fog time is required to be 1000 hours without red rust;
4.4 riveting experiments: and (5) carrying out a riveting connection test and observing the change of the coating.
Further the tackifier in component C is hydroxyethyl cellulose powder.
Further, hexavalent chromium, PH regulator and auxiliary agent in the component B are respectively chromic anhydride (CrO) 3 ) Boric acid (H) 3 BO 3 ) And an organosilicon defoamer.
In the preparation of the coating liquid in the step 1.3, after all the component B is added into a stirring barrel, a thermometer is used for detecting the reaction temperature of the coating liquid, the reaction temperature is controlled to be 35-38 ℃, the reaction temperature is controlled by adjusting the stirring speed, the stirring speed is increased when the temperature is low, the stirring speed is reduced when the temperature is high, and the height of the middle vortex is controlled to be 3-5 cm during stirring.
The short tail pulling rivet is divided into a rivet part and a lantern ring part, and the color change of a film layer is realized on the surface of the lantern ring. The surface film layer of the lantern ring is composed of two parts: an anti-corrosion coating and a color lubrication surface layer.
The anticorrosive coating has the function of meeting the corrosion resistance requirement of the product, adopts the coating designs of zinc aluminum, zinc chromium and the like, and is baked and solidified after being integrally dip-coated and centrifuged; the product has strong salt fog resistance after being repeatedly coated for 2-3 times.
The color lubricating surface layer is prepared by blending nano silicon-based lubricant and color paste. The surface coating treatment is carried out after the anti-corrosion coating, the friction coefficient of the color lubrication surface layer is low, the light resistance is high, the thickness of the lubrication surface layer is thin, the color of the product is rich, and the riveting cannot be influenced by the thickness during use. After the rivet is riveted, the color of the surface film layer of the collar is obviously changed to prompt the riveting result.
The surface treatment method for preventing the color change of the film layer from being leaked and riveted before and after the riveting of the short tail rivet solves the problem of the leakage and riveting of the railway wagon by adopting the treatment method without the discharge of waste liquid, waste residue and waste gas, and improves the inspection efficiency and reliability.
The invention provides a quick judging method for the riveting quality of a wagon short tail pulling rivet; the migration and color change of the color film layer are realized through the sliding action of the surface lubricating layer, and the quality problem of the short tail pulling rivet is thoroughly solved. Compared with the specification of a special short-tail and short-tail rivet pulling technical condition of a railway freight train in a transport bureau of railway department, the method is not influenced by the size of bumps on a flange plate of a product, the arrangement density degree of the short-tail rivet pulling product and the light intensity of a construction site, and the accuracy and the efficiency of quality judgment are improved.
Detailed Description
The present invention will be further described with reference to the following specific embodiments, which are intended to be illustrative of the principles of the present invention and not in any way limiting, nor will the same or similar techniques be used in connection with the present invention beyond the scope of the present invention.
The invention discloses a color surface treatment method of a short tail pulling rivet, which comprises the following steps: coating liquid preparation, product coating, color lubrication film and quality inspection.
1. And (5) preparing a coating liquid.
1.1 configuration equipment:
the coating liquid preparation equipment adopts stirring dispersion equipment, and the equipment mainly comprises: high-speed dispersion impeller, transmission and temperature control equipment. The transmission device is used for speed adjustment, the temperature control equipment is used for heating and refrigerating, and the size of the high-speed dispersion impeller is matched with that of the stirring container. The relationship between the diameter of the stirring impeller and the diameter of the stirring container is approximately 1: 1.5-2.5, the peripheral speed of the impeller should reach more than about 10m/s, can obtain the satisfactory dispersing effect, control the rotational speed template to avoid causing the coating liquid to splash and impeller to expose and introduce a large amount of air. The distance between the impeller and the bottom of the barrel is 2-3 cm, and in actual production, the insertion depth of the impeller is properly adjusted according to the viscosity and the rotating speed of the coating liquid.
1.2 coating liquid composition:
the coating liquid consists of A, B, C components: the mass ratio is 1:1.5:0.005.
A component: silver ash to silver white slurry composed of superfine flake zinc, superfine flake aluminum and polyethylene glycol compounds.
And the component B comprises the following components: hexavalent chromium, a PH regulator and an auxiliary agent.
And C, component: the tackifier is mainly hydroxyethyl cellulose powder.
1.3, coating liquid preparation:
1.3.1 the average temperature of A, B components is adjusted to 25-28 ℃ by using an air conditioner or water bath mode, heating is needed in winter, and refrigeration is needed in summer.
1.3.2 opening the component A, turning up the coagulated blocks of zinc and aluminum sheets precipitated at the bottom of the barrel by using a stainless steel spoon or shovel, slowly pouring the coagulated blocks into a stirring liquid preparation barrel, and fully stirring for fifteen minutes by using a stirrer to soften the coagulated blocks into uniform slurry.
1.3.3 again determining the proportion of A, B components to be 1:1.5, and the average temperature of the components to be 25-28 ℃.
1.3.4 pouring about one third of the component B into the component A packaging barrel, holding the component B by a hand to clean the packaging barrel and the component A on the barrel cover, pouring the components together into a stirring barrel of a stirrer, and manually and fully stirring or brushing the barrel bottom for about one minute by a small wood stick or a round-head plastic brush after pouring all the components into the stirring barrel to prevent the component A at the barrel bottom from depositing.
1.3.5 continuously pouring the rest component B into the component A packaging barrel, pouring the component A into the stirring liquid preparation barrel after each cleaning, and pouring the component A into the stirring liquid preparation barrel in two times, so that the component A packaging barrel can be fully cleaned to avoid leakage and waste.
1.3.6 after all the component B is added into the stirring barrel, the reaction temperature (also called peak temperature) of the coating liquid is detected by a thermometer, the temperature is generally 35-38 ℃, the temperature cannot be lower than 32 ℃ and cannot be higher than 40 ℃, the reaction temperature is controlled by adjusting the stirring speed, the stirring speed is increased when the temperature is low, the speed is reduced when the temperature is too high, and the height of the middle vortex is generally controlled to be 3-5 cm during stirring.
1.3.7 stirring for 1 hour, slowly adding the weighed C component according to the requirement, wherein the C component is agglomerated, and the C component is added after being crushed.
1.3.8C after two hours of addition, the viscosity of the coating liquid can rise, the stirring speed is adjusted, the height of the middle vortex is controlled to be 1-2 cm, and the coating liquid is stirred slowly to perform defoaming.
1.3.9 stirring for more than 12 hours according to the requirement, detecting the viscosity, pH value, specific gravity, hexavalent Cr content, dispersing effect and the like of the coating liquid, and filtering the coating liquid by a stainless steel filter screen with 80-100 meshes after the coating liquid is inspected to be qualified, so that the coating liquid can be put into use.
2. And (5) product coating.
2.1 degreasing:
the surface degreasing and degreasing of the workpiece with oil must be carried out firstly, the degreasing treatment is carried out by adopting phosphorus-free alkalescent degreasing powder, the saponification or emulsification of the oil in an alkaline environment is utilized, and the saponification or emulsification of the oil stain falls off the surface of the product under the action of other auxiliary agents, so as to achieve the aim of cleaning and degreasing.
2.2 rust removal and dust removal:
the rust or burr-bearing workpiece is directly coated, the rust and burr-bearing workpiece must be removed by a rust removing and burr removing process, the process is preferably carried out by a shot blasting mode, and the corrosion resistance of the Dacromet coating is affected by pickling and rust removing. The diameter of the steel shot is 0.3 mm, the shot blasting time is 15-30 minutes, the abrasion of the steel shot to the tooth form of the product is reduced while rust removal is performed, and the flatness of the surface of the product is ensured as much as possible. Dust generated on the surface of the product is removed through an air draft system in the shot blasting process.
2.3 coating:
the cleaned workpiece subjected to degreasing and rust removal must be surface coated by dip coating as soon as possible. Placing the short tail rivet product subjected to rust removal into a dip-coating column, wherein the column diameter of the dip-coating column is 600mm-800mm; the viscosity of the zinc-chromium or zinc-aluminum coating liquid is controlled between 55 seconds and 75 seconds, the dipping time is 1 minute, and the centrifugal speed is 200 revolutions per minute. And placing the dip-coated product on a mesh belt for baking.
2.4 pre-baking:
the workpiece after pretreatment and coating with the coating liquid must be prebaked for 15 minutes at a curve temperature of 180 ℃ as soon as possible, so that the water content of the coating liquid is evaporated and the leveling is uniform.
2.5 sintering:
the pre-baked workpiece must be sintered at a high temperature of 360 ℃ for 40min, and the sintering time can be shortened by properly increasing the temperature.
2.6 coating is repeated for 2.3 to 2.5 times.
3. Color lubrication film.
3.1 color Lubricant configuration:
diluting the aqueous silicon-based lubricant with the friction coefficient of 0.08 according to the ratio of 1:5, adding 10% of aqueous color paste, and uniformly stirring. Color paste performance: the color paste is green or other colors, the fineness is below 5.5um, and the light resistance is 8 grades.
3.2 lubrication dip coating:
the coated product is put into a net and immersed in color lubricating liquid, the net is dithered up and down during immersion,
the immersion time was 10 seconds. And (3) putting the product subjected to lubrication dip coating into a centrifuge to remove excessive coating liquid, and then drying at 80 ℃ for 20 minutes.
4. And (5) quality inspection.
4.1 appearance inspection:
the product has uniform color, no missing coating, continuous coating, no bubble, peeling, pitting, inclusion and other defects, uniform coating thickness and no obvious local excessive thickness phenomenon.
4.2 film thickness detection:
the detection method is carried out according to GB/T4956-2003 magnetic hair for measuring the thickness of a non-magnetic coating layer on a magnetic substrate, and the magnetic thickness gauge is provided. The coating thickness is greater than 8 microns.
4.3 neutral salt spray test:
the neutral salt spray test is carried out according to GB/T10125 salt spray test for artificial atmosphere corrosion test, and the salt spray time is required to be 1000 hours without red rust.
4.4 riveting experiments.
4.4.1 preparation of riveting equipment:
the riveting equipment consists of a hydraulic pump station, a control system and a high-pressure oil pipe (with a quick connector) and a riveter. Before connecting the riveter control line switch to the hydraulic device, it must be determined that the high pressure oil line is connected to the hydraulic device.
And connecting a power supply of the hydraulic device, and opening the hydraulic device. The pressure is regulated, the trigger switch of the hand riveter is pressed and loosened for several times, so that the hand riveter circulates for several times, and hydraulic liquid circulates well. And checking the working condition of the hand riveter and checking whether oil leakage exists or not.
4.4.2 riveting step:
and (3) riveting a short tail rivet:
(1) The short tail rivet penetrates through the connected plate layers, and the lantern ring is screwed from the tail of the short tail rivet until the short tail rivet is not screwed by hands;
(2) Placing a riveter jaw on the tail teeth of the short tail rivet, wherein attention is paid to preventing the jaw and the tail teeth of the short tail rivet from being staggered, so that the tail teeth are damaged;
(3) Pressing down the riveter control switch to enable the anvil and the sleeve to move relatively to squeeze the sleeve until the anvil withdraws from the sleeve, and then loosening the riveter control switch;
(4) Visual inspection was made as to whether the color of the collar surface changed and whether the color change area was adjacent to the flange.
(5) In the actual riveting operation, the color is changed to be the completed riveting rivet.
Claims (6)
1. The color surface treatment method of the short tail pulling rivet is characterized by comprising the steps of coating liquid preparation, product coating, color lubrication film and quality inspection;
step S1, coating liquid preparation; the method comprises the steps of preparing equipment, preparing a coating liquid and preparing the coating liquid;
1.1 configuration equipment: stirring and dispersing equipment is adopted;
1.2 preparation of a coating liquid: the coating liquid consists of A, B, C three components: a component: silver ash to silver white slurry formed by mixing ultrafine flaky zinc, ultrafine flaky aluminum and polyethylene glycol compounds; and the component B comprises the following components: hexavalent chromium, a PH regulator and an auxiliary agent; and C, component: a tackifier; the mass ratio A, B and C is 1:1.5:0.005;
1.3, coating liquid preparation: respectively regulating the temperature of A, B components to 25-28 ℃ and stirring uniformly, firstly pouring one third of the B component into the A component and stirring uniformly, and then pouring the rest B component into the A component and stirring uniformly; controlling the reaction temperature to be 32-40 ℃; stirring for 1 hr, slowly adding component C, stirring for more than 12 hr, and detecting viscosity, pH value, specific gravity, and Cr of the coating solution 6+ The content and the dispersion effect are filtered by a stainless steel filter screen with 80-100 meshes for standby after being checked to be qualified;
s2, coating a product; comprises the steps of degreasing, rust removal, dust removal, coating, pre-baking and sintering;
2.1 degreasing: adopting phosphorus-free weak alkaline degreasing powder to degrease the surface of the rivet collar;
2.2 rust removal and dust removal: adopting a shot blasting mode to remove rust and dust on the surface of the rivet collar;
2.3 coating: the method comprises the steps of coating in a dip-coating mode, putting a short tail rivet product into a dip-coating column, controlling the viscosity of zinc-chromium or zinc-aluminum coating liquid to be 55-75 seconds, dipping for 1 minute, and centrifuging at a speed of 200 revolutions per minute; and placing the dip-coated product on a mesh belt for baking.
2.4 pre-baking: pre-baking for 15 minutes at 180 ℃ after coating to evaporate water in the coating liquid and uniformly leveling;
2.5 sintering: sintering at 360 ℃ for 40min after pre-baking;
step S3, a color lubricating film; comprises the steps of color lubricant configuration and lubrication dip-coating;
3.1 color Lubricant configuration: diluting the aqueous silicon-based lubricant according to a ratio of 1:5, adding 10% of aqueous color paste, and uniformly stirring; the color paste is green or other colors, the fineness is less than 5.5um, and the light resistance is 8-level;
3.2 lubrication dip coating: filling the coated product into blue and immersing the product into color lubricating liquid for more than 10 seconds; after lubrication and dip coating, putting the mixture into a centrifuge to remove excessive coating liquid, and drying the mixture at 80 ℃ for 20 minutes; preparing a short tail pulling rivet with the surface prepared by coating;
s4, quality inspection; the method comprises appearance inspection, film thickness detection, neutral salt spray test and riveting test.
2. The method for color surface treatment of a blind rivet according to claim 1, characterized in that: in the step S4, the appearance inspection, the film thickness detection, the neutral salt spray test and the riveting test specifically comprise:
4.1 appearance inspection: the product color is uniform, no coating leakage exists, the coating is continuous, the defects of bubbles, flaking, pits, inclusions and the like exist, the thickness of the coating is uniform, and the phenomenon of obvious local excessive thickness does not exist;
4.2 film thickness detection: magnetic thickness measurement is carried out according to GB/T4956-2003 magnetic hair for measuring thickness of non-magnetic coating layer on magnetic substrate, and the thickness of the coating layer is more than 8 micrometers;
4.3 neutral salt spray test: according to GB/T10125 salt fog test of artificial atmosphere corrosion test, the salt fog time is required to be 1000 hours without red rust;
4.4 riveting experiments: and (5) carrying out a riveting connection test and observing the change of the coating.
3. The method for color surface treatment of a blind rivet according to claim 2, characterized in that: the tackifier in the component C is hydroxyethyl cellulose powder.
4. The method for color surface treatment of a blind rivet according to claim 2, characterized in that: hexavalent chromium, a PH regulator and an auxiliary agent in the component B are respectively selected from chromic anhydride, boric acid and an organosilicon defoamer.
5. The method for color surface treatment of a blind rivet according to claim 2, characterized in that: in the preparation of the coating liquid in the step 1.3, after all the component B is added into a stirring barrel, a thermometer is used for detecting the reaction temperature of the coating liquid, the reaction temperature is controlled to be 35-38 ℃, the reaction temperature is controlled by adjusting the stirring speed, the stirring speed is increased when the temperature is low, the stirring speed is reduced when the temperature is high, and the height of the middle vortex is controlled to be 3-5 cm during stirring.
6. A short tail blind rivet, characterized in that: a short tail rivet which is a rivet made by the surface treatment method of any one of claims 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211584353.1A CN116116682A (en) | 2022-12-09 | 2022-12-09 | Color surface treatment method for short tail pulling rivet and rivet manufactured by same |
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| CN202211584353.1A CN116116682A (en) | 2022-12-09 | 2022-12-09 | Color surface treatment method for short tail pulling rivet and rivet manufactured by same |
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| CN102653643A (en) * | 2012-04-24 | 2012-09-05 | 包头稀土研究院 | Zinc-based composite coating for improving corrosion resistance of neodymium-iron-boron magnet |
| CN103316828A (en) * | 2013-05-28 | 2013-09-25 | 中国船舶重工集团公司第七二五研究所 | Production method for ship fastener complex coating |
| CN110964396A (en) * | 2019-12-25 | 2020-04-07 | 廊坊师范学院 | Preparation method and coating process of water-based zinc-based chromium salt metal anticorrosive paint |
| CN112427273A (en) * | 2020-11-13 | 2021-03-02 | 温州市金邦五金有限公司 | Composite zinc impregnation surface treatment process for super corrosion-resistant nylon locknut |
| CN113083644A (en) * | 2021-03-12 | 2021-07-09 | 东风商用车有限公司 | Surface lubrication method for rivet bolt |
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2022
- 2022-12-09 CN CN202211584353.1A patent/CN116116682A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653643A (en) * | 2012-04-24 | 2012-09-05 | 包头稀土研究院 | Zinc-based composite coating for improving corrosion resistance of neodymium-iron-boron magnet |
| CN103316828A (en) * | 2013-05-28 | 2013-09-25 | 中国船舶重工集团公司第七二五研究所 | Production method for ship fastener complex coating |
| CN110964396A (en) * | 2019-12-25 | 2020-04-07 | 廊坊师范学院 | Preparation method and coating process of water-based zinc-based chromium salt metal anticorrosive paint |
| CN112427273A (en) * | 2020-11-13 | 2021-03-02 | 温州市金邦五金有限公司 | Composite zinc impregnation surface treatment process for super corrosion-resistant nylon locknut |
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