Penti

Penti sou metal sitou konsiste nan detretasyon, etch primer ak penti, ak chak pwosesis enpòtan pèfòmans nan korozyon pwoteksyon.
√  Pre-treatment
Gen yon pi popilè di si ou kouch, li esansyèl ke fè proper pretreatment anvan poud poud kouch. Metal sifas depann depann baz si wi ou non li's twò grav asye, aliminyòm oswa purless asye pwosesis remove òganik tè ak inòganik echèl ak òganik tè tè gen ladan lwil oliv 2c waxy mill mill lwil oliv lwil oliv rouye inhibitors, coolants, grès machin desen compounds. Alkaline netwaye solisyon efikas sou òganik tè ak gen gen anpil netwayaj ajan disponib mache a mache a ak solisyon yo yo pifò efikas inorganic tè tankou rouye, smut ak echèl. Some typical soudman bending kwen impingement tankou sand blasting, ak Se poutèt sa espesyal yo zòn yo difisil okipe. lou asye work oswa epè epè fabrikasyon pati,depo�% a0is souvan itilize kòm pi plis efikas pretretman solisyon.

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In general, self-etching primer is ideal for painting metal because it creates the foundation for bonding with the paint, and for a sound binding, two coats or three coats of primer should be considered. Pls also make sure that the workshop has proper ventilation. In particular, non-alkyd adhesive primer shall be the most important factor for applying primer to the galvanized steel because alkyd primer or oil-based primer will react with the zinc oxide and produce a phenomenon called saponification, which is a chemical reaction between the zinc and the acids in the alkyd resin resulting in a soap like substance between the surface and the coating. It will cause the paint film to delaminate or peel over time. In duplex coating systems, the use of micaceous iron oxide (MIO) primer is often chosen as it shows an improved adhesion performance. In general, primer paint is applied to a nominal thickness of 75microns, however over application (thicknesses over 120microns) can result in certain primers losing their matt finish and taking on a shiny finish, and in many cases this sheen finish can prevent the intumescent adhering correctly to the primer, and consequently, it results in delamination.

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Painting process can only start after primer is completely dry. Painting instruction for galvanized steel is normally specified by the paint brand, and the choice of paint systems depends upon both the application and service environment. The high-build epoxy paints and vinyl co-polymer paints are popular options for painting on galvanized surface. It's critical that the steelwork shall be free from dust and other deleterious material like oils, grease and concrete snots from the slab pours. Any contamination shall be removed, and any local bare areas shall be touched up. The rust spots shall be sanded and cleaned before touching up repair. Another important aspect is that correctly preparation of the primer paint is vital to the performance of adhesion.

It can be caused by poor surface preparation like contamination, condensation on the substrate. There are two types of adhesion failure, inter-coat adhesion failure and substrate adhesion failure.

                    Cracks & Peel-Off

The paint has large cracks and peel-off which penetrate down to the substrate, and it's a substrat ahesion failure. To avoid this situation, you need to ensure all the coatings in a multi-layer system are flexible and compatible with reinforcing fibers or pigments. Plus, always bear in mind that the primer basecoat shall dry completely before applying top coat, and excessive coating thickness shall be definitely forbidden.

Crazing is common with acrylic paints that form a skin during drying process while the portion of the coat body closer to the substrate is still liquid. It often happens when applying the coating under cold ambient temperature conditions or by applying the coating with an excessive film thickness. It's a inter-coat adhesion failure. To avoid such defect, you need to
√  Ensure all the coatings in a multi-layer system are compatible. 
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Li souvan rive lè korozyon fòm anba yon kouch kouch ak korozyon leve pwoteksyon kouch lwen substra a substra, bay aksè imidite ak salts rive jwenn zòn aksè substra, konsa kreye plis korozyon kòm li creeps li sifas la ta ka gen te te korode, move sifas preparasyon main main pwoblèm sa a .  The pi bon solisyon gen gen konplè sifas preparasyon anvan penti, ak sandblasting is souvan efikas efikas pou konplè sifas preparasyon.

  �%a 0 �%a     � �%a �%a �%a �%a �%a %a �%a �%a �%a �%a �%a �%a  Wrinkling

Li's sitou ki te koze pa diferan siye vitès ant kouch kouch kò a kouch 2c lè yon po 2c 2c kreye kouch la kouch sifas kò a kouch rete likid kreye kreye yon ekri.

Lòt penti defo yo asosye ak soude soude tankou porosity, ak li's vizib penti aplike. Se poutèt sa, strik soude kontwòl obligatwa anvan soude moso yo dispatched penti. penti.c2%.

Poukisa penti hot dip gazzed metal bezwen?

Korozyon zenc ogmante lè pH se mwens pase 7 oswa pi gwo 13 (plis alkaline) menm gazasyon bay ekselan korozyon pwoteksyon nan pH ant 137 ak 13. Se poutèt sa, penti bezwen lè gazzed is ekspoze yon korozivite anviwònman ki gen swa lower oswa pi wo pH nivo.% c2� 

Pou fè yon bon adezisyon ant gazasyon sifas ak penti raat% ou fè yon bon sifas preparasyon, ak gen kèk aspè alantou gazasyon sifas kondisyon.
√  Is gazasyon passived?

Passivation tretman aplike gazzing (espesyalman chromate tretman) ka interfere ak adhesion kouch, ak Se poutèt sa passivation dwe elimine elimine gazasyon pwosesis la.

√  Èske gazasyon fresh te fè?

Ou ka penti nouvo gazzed metal (nan 48hours) san yo pa sifas si gazasyon 3 jou, Lè sa a, sifas preparasyon is Mande gazasyon kèk mwa fin vye granmoun 2c Lè sa a, sèvi ak abrasif blast netwaye SSPC-SP16. �

√  Has gaz metal ki gen laj?

The surface has been oxidized if the galvanization has weathered for over a year less than 2 years, You need to clean the surface by pressure washing to remove all the surface dirt and debris as well as zinc salts, and make sure that the surface is dull and clean.

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Yon fwa sifas la preparasyon se pran bon swen nan, Lè sa a, ou sou fè yon penti penti bon jan kalite.

√ Surface Preparasyon ( Pwosesis Pwosesis Kontwòl)

√�% a0 Kouch Film Epesè

√�% a0 Primer Aparans (Pwosesis Pwosesis Kontwòl)

√  Penti Aparans Aparans

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√  Crosshatch Adhesion

√�% a0 Kouch Fleksibilite

√  Enpak Rezistans.

Fabmann bay penti sèvis koutim metal pati ki mande pou ekselan korozyon pwoteksyon ak gen kèk diferan sifas kouch opsyon ki nou ta ka rekòmande nou kliyan nou yo:

√  Poud Kouch

√  Penti

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√  Zenk Plating

√  Hot Dip Gazasyon

√  Poud kouch hot dip gazasyon

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Penti Steel Pati: The Konplè Achte Gid

There are many paints which have been specifically designed for different metal, and some multi-purpose paints that are also compatible with metal and other surfaces. There are many types of paints designed for use on different metals:

✔ Acrylic paint, characterized by long-term protection of metal products and structures from corrosion, and it has a long service life. It usually does not crack and does not fade, provides reliable protection to metal products from corrosion. The acrylic compounds can be used for coloring heating radiators because it is not combustible and non-toxic, has no unpleasant odor, therefore it can be used for external and internal works.

✔ Latex based paint, a non-flammable paint. it can dry faster, can be cleaned easily. It can be applied easily on most of the surfaces without an application of primer. But the disadvantage is that it is not as durable as the oil-based paint. And the color pigments are dissolved by water, they can acquire rust easily, and they fail to adhere to the glossy and smooth metal surface.

✔ Water-based paint, consisting of acrylics, rubber-based composites, or vinyl. The advantages of water-based paints are the quick drying capability and do not have unpleasant odors. They are also easy to keep clean and are not flammable.  

✔ Low corrosivity conditions & medium-term service

✔ Low corrosivity conditions and high resistance to wear and trafficking & long-term service

✔ Medium corrosivity conditions and high resistance to wear and trafficking & long-term service

✔ High corrosivity conditions and high resistance to wear and trafficking & long-term service

✔ Very high corrosivity conditions and high resistance to wear and trafficking & long-term service

✔ Passive barrier protection, this protection is done by coating the steel with a protective coating that forms a tight barrier to oxygen, water and ions. The lower the permeability of the coating system to water, the better the protection. Two-pack epoxy coatings and chlorinated rubbers applied at sufficiently high film builds offer the most successful corrosion protection through passive barrier protection.

✔ Active corrosion protection, the protection is achieved by applying reactive chemical compound primer directly to the steel, and the reactive compound disrupts the normal formation of anodes on the surface of the steel. For example, inorganic zinc inhibitive pigments, such as zinc phosphate, offer active anticorrosive protection to the steel substrate. Zinc phosphate (Zn3(PO4)2) is only slightly soluble in water. It hydrolyses in water to produce zinc ions (Zn2 plus ) and phosphate ions (PO43-). The phosphate ions act as anodic inhibitors by phosphating the steel and rendering it passive. The zinc ions act as cathodic inhibitors.

✔ Sacrificial protection, it is also called cathodic protection or galvanic protection. The above-mentioned reaction between dissimilar metals can be used to protect steel against corrosion. The most widely used metal for the protection of steel is zinc. Zinc metal in direct contact with the steel substrate offers protection through the preferential oxidation of zinc. Zinc is a great choice in protecting steel, as not only does it corrode in preference to the steel, its rate of corrosion is generally very lower. This rate, however, is accelerated in the presence of ions such as chlorides in coastal locations. Examples of coatings using this principle of sacrificial protection include inorganic zinc silicates, organic zinc-rich primers, metal sprayed zinc, hot dip galvanizing and electroplating.

The service life of painted steel depends upon quite few factors such as paint type, pretreatment, and environmental elements. In average, with proper surface preparation, the painted steel can last 5-10 years in outdoor condition which is not marine environment. 

ü Clean the steel surface, the steel surface must be free from dirt, grease, old paint, and rust. Some surfaces may need to be power washed. Use appropriate sandpaper or scraping tools to remove dirt and other deposits from the steel surface. Once the surface of a metal is clear of any corrosion, the next step is to eliminate any petroleum-based products. Almost any kind of oil or grease will severely impair the ability of paint to adhere to metals, especially for the long term. The solvent butanone, also called methyl ethyl ketone (MEK), is an excellent choice for removing greases and oils. Butanone can strip petroleum products from metal with ease and is fairly safe to handle with proper ventilation and other precautions.

After surface preparation, the next step is to apply the right prime, and it should be applied immediately after surface preparation to avoid flash rusting or dust accumulation. There are various primer options like rust-inhibiting primers, galvanized primers, and iron-oxide primers, and you need to apply the primer before applying paint. Most important rule, the primer should be industrial grade quality and compatible with the paint you are doing to use, and pls make sure that primer dries completely and cure before painting application.

The last step is to paint, and it's essential to use a paint that is formulated especially for the steel workpiece. Paints for commercial steel structures work best if they are industrial water-based alkyd coatings because they designed specifically for structures.

Konbinezon nan gaic penti ak baryè bay bay pi bon pwoteksyon situations gai gai te fè nan swa inorganic zinc silicates oswa zenk-rich epoksi primers, ak tou de gen nivo nivo%.afo zenc.

Ki penti system yo optimal pou asye estrikti?

Pou rive jwenn optimal kondisyon pou asye estrikti a estrikti pretretman ak kouch yo trè enpòtan 2c ak konsèy la konsèy 3a

�% 9c� Sifas preparasyon: Sa 2 ½

✔ Primer rad: zinc rich epoxy primer ant {0{0}}μm

�% 9c� Inter rad: bati epoxy ant 110-150μm

�% 9c� Top¬ocoat: poliurethane ant 60-100μm

Èske ou ka penti sou sherardized pwodwi yo?

Wi% 2c it's trè pri-efikas type type pou duplex kouch operasyon li matte gri kreye yon tekstire sifas ki bay an excell kle pou ki vin apre lwil oliv ak lwil oliv penti ak lacquers, elimine chè primers As a rezilta aplikasyon an penti sherardized cochatized vini nan yon redwi pri ak ogmante lavi Aplikasyon an yon penti penti bay a pwoteksyon ak imans siperyè pwoteksyon &a Sa a duplex duplex amelyore rezistans atmosph Korozyon 2c pwodwi chimik rezistans, diminye friksyon, elektrik rezistans ak abrasion rezistans, ki gen ladan tou de sakrifis baryè wòl nan sealant la

Sa a duplex kouch gen byen kèk evidan benefis anba a:

�% 9c�% aThe sakrifis pwoteksyon nan c2%a a0sherardized kouch ak baryè pwoteksyon òganik oswa inorganic kouch amelyore amelyore korozyon rezistans lè konpare pwoteksyon ofri lè l sèvi avèk chak sistèm pou kont li.

�% 9c� This adisyonèl penti amelyore pwodwi chimik ak mete rezistans% 2c ak diminye friksyon.

�% 9c� Li ofri ayestetik benefis ak bay koulè kodaj pou idantifikasyon.

Poukisa ou bezwen penti penti asye psetwa 3f

Gen divès kalite klas nan pursèl asye asye, ak the 2yèm klas pral corrode lè ekspoze marine anviwònman, pwodwi chimik yo% 2c oswa high imidite limyè-a-hars environments. When penti pur asye asye ou konnen substra last 2�%alonger penti a pentire so preparasyon pral pou repainting,

jis tankou ki sa ou gen trete ak lòt pentire metal substrates.

Kòm ou konnen ke ke purless se yon lis substra, li difisil jwenn consistent adhesion results. Most penti echèk sou purless yo te koze pa inekwasyon sifas preparasyon oswa�% a0improper seleksyon ekspoze a anviwònman ak li wise glas-poli purses steel pa ka coated. Gen kèk penti pou pursèl asye pursèl asye:

✔ If the primary concern is water resistance – to humidity, condensation, or direct water contact - an aluminum paint system is an alternative; the thin, flat flakelike aluminum particles overlap horizontally, which reduces the permeability of the paint film. This finish does NOT have the abrasion or chemical resistance of alkyds, epoxies, or polyurethanes, and should be avoided if these conditions exist.

✔ Primer is highly recommended; other alternatives include a solvent-based bonding primer designed for use on problematic surfaces to promote adhesion of subsequent coatings, or an epoxy primer if an epoxy

Yes, you can. Latex or acrylic paints are probably the most suitable types for painting aluminum. But please remember don't choose high-gloss paints because they will highlight imperfections on the surface. 

As many people know that aluminum will not rust or discolor like steel, but it does oxidize on its surface. Whilst this oxidized film is almost invisible, it prevents a good adhesion of any coating onto itself. That's why this oxidized surface need to be removed. Because aluminum is a non-ferrous metal, painting is a lot trickier compared to steel. You need to follow the set steps cautiously for the best results.

✔ Sand the surface with coarse, then fine-grit sandpaper, sand all the sides, crevices, and corners of the object. Start with a coarse sand grit paper like an 80 to 100 grit paper to sand the surface then repeat the process with a finer 400 grit or higher sandpaper. Rewash the piece with warm water and degreasing cleaner to remove any particles and dust and allow the metal to dry completely.

✔ Apply self-etching primer, a self-etching primer is crucial in painting aluminum. Its formulation contains chemicals that etch into the surface of aluminum for the best bond. To apply the primer, spray it in thin coats according to the manufacturer's recommendations. Allow the primer to dry completely, followed by light sanding with a fine-grit (400 grit or higher) sandpaper, and wipe away the dust using a rag.

If you want to paint aluminum, latex or acrylic paints are the best options.  You should ensure the paint on patio furniture is exterior grade if it is being used outside. If the paint is too hot, don't use high-gloss paints because they will highlight flaws.

Rust-Oleum Stops Rust Enamel Protective Paint is the best paint for aluminum. This enamel paint is another option from Rust-Oleum, a trusted brand that offers a wide range of colors and finishes. Oil-based coating is extremely durable and will resist weather and corrosion, as well as being extremely effective.

A strong and durable aluminum siding can last 40 years or more, according to the International Association of Certified Home Inspectors, but it may require painting every five to ten years. In addition to being relatively easy to maintain, aluminum is also very durable, so you can even change the color of your home with it.

depends upon both the application and service environment. For metal products to be used in very corrosive environment like offshore or marine, high build epoxy products and vinyl co-polymer systems with glass reinforced epoxy are becoming very popular, and micaceous iron oxide (MIO) primer has been often chosen for multi-coat systems due to its superior adhesion property. Two-pack polyurethane and acrylic urethanes are commonly used as top coats and offer good durability and color retention.  

Korozyon zenc ogmante ogmante lè pH se mwens 7 oswa pi gwo 13 (plis alkaline) menm gazasyon bay ekselan korozyon pwoteksyon nan pH valè 7 7 ak 13. Se poutèt sa, penti bezwen lè gazzed metal ekspoze yon korozivite anviwònman ki swa swa lower oswa pi wo pH nivo.

Nan jeneral, gen twa diferan objektif penti dip gazzed asye, ak chak objektif reyalize ak diferan penti sistèm.

�% 9c� Improve durability, li vle di pou ogmante sèvis lavi.

✔ Enhance chemical resistance, to cope with environment which has pH value out of range of 6 to 12. 

Applying a primer can be part of the pre-treatment of galvanized steel (read more below about How do you prepare galvanized steel before painting). However, it is not necessary, as mentioned before, there are a limited number of direct application products available which negate the need for chemical or mechanical pre-treatment.

As many people know that pre-treatment of galvanized products shall be best carried out right after hot dip galvanizing before the surface becomes contaminated, but this is not always practical. Pre-treatment can be carried out later, but it is vital that the surface is adequately cleaned to remove all traces of contaminants such as oil, grease, and dirt. There are four recognized solutions of surface pre-treatment that produce a sound substrate for a paint coating:

✔ T-Wash, it is a modified zinc phosphate solution which contains a small amount of copper salts, and it will generate a dark grey or black discoloration on the zinc surface after application. Please be aware of that T-Wash must not be allowed to pool on horizontal surfaces because it will prevent maximum paint adhesion, and it is most suitable for new galvanized products not suitable for weathered galvanized products. You shall remove the white salt formed by the exposure of the T-Washed surface and any excess should be removed by water

✔ Sweep blasting, mild blast pressure (no greater than 2.7bar) is critical because this will ensure that only the minimum amount of oxide is removed, and the zinc surface is left in a slightly roughened condition. Fine copper slag, J blast and carborundum powder are ideal blast bead materials, and you also need to work out the optimum blasting angle and nozzle-to-work piece distance. You shall know that angular iron blasting grit must NOT be used under any circumstances.  

It is recommended in environments with low salt, low pollutant and urban areas cleaning should take place at a minimum of every twelve months. In areas where salts, pollutants and high corrosivity levels are prevalent, e.g., beachfront houses or industrial areas, it is recommended a cleaning program should be carried out more frequently at a minimum of every six months. Sheltered areas can have a higher risk of coating degradation as wind-blown salt and other debris or pollutants may adhere to the surface and not be removed when it rains. These areas may require more frequent cleaning. The table below gives you a recommended minimum cleaning schedule for your project. 

Ki jan magazen penti metal pwodwi yo?

Pou evite kouch ak substra a depo kondisyon dwe dwe ak anpil atansyon�%atansyon, gen kèk aspè nan estoke estoke ki ou dwe swiv:

�% 9c� Store andedan si si posib, minimize risk risk nan prematire move tan.

�% 9c� Keep sèk, magazen vantilasyon evite yon bati-up imidure. Si fòme pwodwi pa ka kenbe andedan, magazen yon pant spacer dlo ka flow koule .

�% 9c� Limit kantite lajan tan pwodwi yo yo estoke posib.

�% 9c� Avoid kondansasyon, evite quick tanperati chanjman to anpeche dlo depozisyon nan¬ondensation, ak Se poutèt sa vantilasyon vantilasyon obligatwa.a �

�% 9c��Use quick kòm ou ka% ka% pwopriyete yo kouch evolve tou dousman plis pase time, ak pousyè oswa pousyè magazen sifas la pandan estoke.c2�

Ki sa ki's penti pri?

pri nan penti sistèm varye diferan diferan espesifikasyon espesifikasyon, lavi kondisyon epesè chak kouch kòm as konpleksite kouch kouch pri pri penti varye varye soti nan 242.{{1{1{1%.7d} $4.{3{3}% kare mèt, ak labor cost kondwi pwodiksyon pcs pcs ka fini nan 7b{{4}hour shift. pati yon atansyon nan manyen% 2c li pral ajoute pri a c2%a

Ki penti mak fè Fabmann itilize?

Nou nòmalman itilize entènasyonal poud mak  Kansai Penti, Nippon Paint , BASF and Jotun. achie pi plis pwolonje sèvis nan penti, nou bezwen kliyan bay us detaye aplikasyon background pwodwi kòm sèvis lavi atant.c2�

Nou don't' gen espesifik MOQ kondisyon penti travay 2c ak minimum achte kantite kondisyon aktyèlman penti manifakti a We okipe penti kèk moso to a desan volim. leadtime chenn soti nan {{0}% twa jou 15 jou depann pre-tretman kondisyon ak konpleksite kouch sistèm lan .c2�

Wi% 2c Fabmann bay koutim fabwikasyon service, ki gen ladan metal koupe, metal fòme, soude metal, fèy papye metal fabwikasyon ak metal sifas tretman.  We bay penti penti pou lajè metal pwodwi pwodwi diferan materyèl mileel, hot dip gazzed, sherardized asye, aliminyòm, ak pursless asye.

Ki jan Fabmann asire penti bon jan kalite 3f

Fabmann strikteman swiv penti pwodiksyon pwosedi, ak pretretment strikteman egzekite anvan primer coat. Plus, top dan penti mak pou pi bon rezilta, ak QC depatman fè strik enspeksyon, ak vizyèl ak kwa hatch yo enspeksyon enspeksyon kondisyon pou chak pakèt. Depi tou bay ranpli koutim koutim sèvis sèvis 2c se konsa pral fè asire w metal sifas enpèfeksyon tankou soude spatters, graj soude beads, dents yo yo rezoud anvan pretreatment penti.

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