Galvalumed stee is composed of aluminum-zinc alloy structure, which is composed of 55% aluminum, 43.4% zinc and 1.6% silicon solidified at 600℃.
Galvalumed has many excellent characteristics: strong corrosion resistance, is pure galvanized sheet 3 times;There are beautiful zinc flower on the surface, which can be used as building outdoor board.
Corrosion resistance
“Galvalumed steel coil” corrosion resistance is mainly because of aluminum, aluminum protection function.When zinc wears down, aluminum forms a dense layer of alumina, preventing the corrosion-resistant material from further corroding the interior.
Heat resistance
Galvalumed steel plate has a good heat resistance, can withstand more than 300 degrees Celsius of high temperature, and the high temperature oxidation resistance of aluminum plate is very similar, often used in
Chimneys, ovens, illuminators and lampshades.
Heat reflective
Galvalumed has a high thermal reflectivity, which is twice as high as galvanized steel. It is often used as an insulating material.
Economy
Since the density of 55% al-zn is lower than that of Zn, the area of Galvalumed steel plate is more than 3% larger than that of galvanized steel plate at the same weight and the same thickness of the gold-plating layer.
Color coated household appliances can not only meet the requirements of the use environment and service life of household appliances, but also have good molding and processing ability, can meet the requirements of high-speed, precision processing equipment, can be used in batch for refrigerator side plate, back plate, washing machine box, water heater barrel and microwave oven shell and other household appliances decoration.
PPGI home appliance plate except for home appliance itself provides good decorative effect, also must make the pledge that we shall meet the special requirements of the electrical appliances product, such as microwave oven shell high workability, washing machine shell washing resistance, corrosion resistance, the refrigerator side panel scratch resistance, stain resistance, surface hardness, color steel plate can be designed according to different purpose of home appliance production.
belong to the ordinary polyester system, low gloss (0-10%) surface and wrinkles unique appearance surface.Used for interior door panels.
Reticulum effect color coating products:
reticulum products with its unique appearance and beautiful microstructure whether as indoor decoration or outdoor use, will give the existing market a new point of growth.Film forming mechanism: during the film forming process of surface paint, the condensation effect of surface tension is generated by controlling the temperature and wind speed of the furnace, and the reticular effect with hand feeling is produced.
Printing color coating product: printing color coating product is one of the representatives of high-end products, which has gradually replaced the traditional PVC film, completely solving the environmental protection problem.Its products adopt special roller coating process to produce continuous color patterns, which are widely used in the industry of architectural decoration board, and can be used as interior wall board, ceiling, doors and Windows.
Metal furniture lining components, lamps, electrical boxes, etc
Galvanized steel
The zinc layer of hot galvanized sheet is thicker, suitable for preparing color coated sheet with higher anticorrosion and less decorative requirements.
Production process and hot galvanized sheet basically the same, mainly regulate the composition of molten plating solution, according to the amount of aluminum content to classify.
Corrosive outdoor environment
Painter
Ordinary polyester color coating products (PE) :
Features: the comprehensive performance is very good, its good weather resistance and mechanical processing performance, can fully meet the general requirements for building external use.
Epoxy primer: Epoxy system primer with excellent corrosion resistance and adhesion.PU primer: polyurethane primer with excellent machinability and corrosion resistance. Universal primer.
Scope of application: outdoor parts of industrial plant and commercial building, such as roof and outer wall.
Silicon modified polyester color coating products (SMP) :
Features: special silicone polyester resin and crosslinking agent to ensure adequate weather resistance;Use super weather resistant pigment to ensure the color of permanent bright;Special organosilicone structure, makes the coating harder, can increase wear resistance and metal scratch, can withstand the processing of stamping.
High durability polyester color coating products (HDP) :
Using high-performance polyester resin and inorganic ceramic pigments, you can do a lot of PVDF can not do color;Special polyester structure, good resistance to hydrolysis, the use of weather resistant pigments, and ordinary polyester coating has excellent chemical resistance and durability;Compared with ordinary silicon modified polyester, it has better processability and chemical resistance.
Polyvinylidene fluoride (fluorocarbon) color coating products (PVDF) :
More than 70% fluorocarbon resin content, so that the coating has a good weather resistance, acid and alkali resistance and environmental pollution performance;The coating all USES the advanced inorganic ceramic pigment, blocks the ultraviolet ray, causes the coating to have the luster to maintain and the color to maintain the ability;Also has excellent mechanical properties: such as t-bend up to 0-2t.
PPGI steel plate refers to the metal substrate after the color roller coating unit, on the surface coated with a layer or multiple layers of organic coating and become a composite material.
The purpose of coating is to paint on the surface of the object with various methods, forming a dry protective film, so that it has the corrosion resistance to the atmosphere, pollution resistance and other properties to protect the matrix, at the same time to give color, gloss, decorative pattern, smooth, three-dimensional feeling, contact good and other advantages, make the object beautiful.
In special cases, there are electrical insulation, fire, anti – bacteria, anti – insect, bonding, marking, color regulation, temperature indication for the purpose of production.
PPGI Technological Process
Coating: coating thickness control is the key parameter in the production process of color coated plate.Coating thickness control has two control methods: one is the use of pressure sensor, one is the use of magnetic ruler control.
Roller coating is a coating method that forms a certain thickness of wet coating on the roller (roller) and then transfers part or all of the wet coating to the coated object.It is suitable for the production of flat plate or strip coating.
Divided into cut length galvanized sheet and galvanized sheet with coil packaging two kinds.General iron packing, lined with moisture-proof paper, tied with iron waist on bracket.Strap securely to prevent internal galvanized sheet from rubbing against each other.
The International Standard
Chemical Composition
The requirements for the chemical composition of galvanized sheet substrate vary from country to country. The national standard is generally to test the content of carbon, manganese, phosphorus, sulfur and silicon.
Product Standards
JIS G3302-94 galvanized steel sheet;
JIS G3312-94 painted galvanized iron sheet;
JIS G3313-90 (96) galvanized steel sheet and steel strip;General requirements for hot-dip galvanized sheet steel;
(1) surface state: due to different treatment methods in the coating and plating process, the surface state of galvanized sheet is also different, such as ordinary zinc flower, fine zinc flower, flat zinc flower, zinc-free flower and phosphating treatment surface.German standard also provides for surface grade.
(2) galvanized plate shall have a good appearance, and shall not have harmful defects to the use of the product, such as no plating, holes, cracks and scum, over plating thickness, scratch, chromic acid dirt, white rust, etc.Foreign standards are not very clear about specific appearance defects.When ordering, some specific defects should be specified in the contract.
Galvanized Steel Performance
1) tensile test:
(1) performance indicators: generally speaking, only the structure, drawing and deep drawing galvanized sheet has tensile properties.Galvanized sheet for structure is required to have yield point, tensile strength and elongation.Only elongation is required for drawing.See the relevant product standards in “8” in this section for specific values;
(2) test method: the test method is the same as the general thin steel plate, see the relevant standard provided by “8” and the test method standard listed in “ordinary carbon steel sheet”.
(2) bending test:
Bending test is the main item to measure the technological performance of sheet metal, but the requirements of various national standards on galvanized sheet are not consistent.In Japan, bending test is required except for structural grade, building corrugated board and general corrugated board.
Requirements: general requirements galvanized sheet bending 180, the outer surface must not have zinc layer off, plate base must not have cracks and fracture.
Galvanized steel plate is to prevent the surface of the steel plate from corrosion to extend its service life, coated with a layer of metal zinc on the surface of the steel plate, zinc coated steel plate called galvanized plate.
Zinc is a very reactive metal that oxidizes extremely easily, but instead of a loose powder like iron oxide, zinc oxide has a dense outer layer that prevents further oxidation of the zinc inside.
When the surface of galvanized steel is damaged, exposing the inner surface of iron, zinc is more reactive than iron, so according to chemical battery theory, zinc will oxidize before iron, thus protecting the iron layer from damage.These two are integrated, it is the truth that galvanizing steel plate protects.
Galvanized sheet is mainly used in construction, home appliances, automobile, machinery, electronics, manufacturing light industry and other industries.
According to the production and processing methods can be divided into the following categories:
(1) hot dip galvanized steel sheet.Dip the sheet steel into the melted zinc bath
To make the surface adhere to a layer of zinc sheet.At present, the main use of continuous galvanized process production, that is, the coil of steel plate continuously immersed in the melting zinc plating tank made of galvanized steel plate;
(2) alloy galvanized steel plate.This kind of steel plate is also made by hot dip method, but after the trough, it is immediately heated to about 500℃ to form alloy film of zinc and iron.The galvanized sheet has good coating tightness and weldability.
(3) electric galvanized steel plate.This galvanized steel sheet is made by electroplating with good processability.But the coating is thinner, the corrosion resistance is not as good as hot dip galvanized sheet;
(4) single-sided plating and double-sided galvanized steel.Single-sided galvanized steel, that is, only on one side of the product galvanized.In welding, coating, anti-rust treatment, processing and other aspects, has better adaptability than double-sided galvanized sheet.
In order to overcome the disadvantage of single side without zinc coating, there is a zinc plate coated with thin layer of zinc on the other side.
(5) alloy, compound galvanized steel plate.It is made of zinc and other metals such as aluminum, lead, zinc alloy and composite plate.This kind of steel plate not only has the remarkable antirust performance, but also has the good coating performance;
In addition to the above five, there are color galvanized steel plate, printing coating galvanized steel plate, PVC laminated galvanized steel plate.But at present the most commonly used is still hot dip galvanized sheet.
High strength Galvanized steel is a kind of alloy steel used to manufacture structural parts with high stress. Generally, the yield strength is greater than 550 MPa and the tensile strength is greater than 500 MPa. These steels generally have sufficient toughness, high specific strength and yield strength ratio, and good weldability and formability.For steel structure engineering under heavy load, the use of high strength steel can reduce steel consumption and processing capacity, save resources and reduce costs.
High strength galvanized steel is suitable for high-rise buildings, large public buildings, large bridges and other structures with steel, friction steel piles, and other buildings bearing larger loads.High strength galvanized steel is widely used in vehicle body and safety part manufacture for well mechanical performance, erosive- resistant performance and impact-resistant performance.
We are considered in the market to be one of the leading manufacturers and suppliers of this impeccable range of Colour Coated Steel Coils.
Manufactured as per the set industry norms and guidelines, its standard of quality never deteriorates. Further, its superior sturdiness, durability and resistance to corrosion, makes the product one of the primary choices in the market.
Features
Impeccable sturdiness
High resistance to corrosion
Fine finishing
When hot-dip galvanized steel is painted, the duplex system provides a more sophisticated manner of corrosion protection. The galvanized coating protects the base steel by providing both cathodic and barrier protection. The paint coating acts as a barrier protection for the hot-dip galvanized coating and significantly reduces the corrosion rate of the zinc.
The increased lifetime that can be provided with a combination of paint over galvanized steel makes this type of corrosion protection system very attractive for structures designed to last a long time in aggressive atmospheres.
PPGI is pre-painted galvanised iron, also known as pre-coated steel, coil coated steel, color coated steel etc., typically with a hot dip zinc coated steel substrate. This product is a coil of PPGI.
PPGI is made by painting of Galvanized Iron prior to formation. Galvanized Iron is obtained when coated steel is continuously hot dipped to form Zinc of purity greater than 99%. Although the term PPGI is used loosely sometimes to refer to steel with various metallic coatings like Aluminum, Alloys of Zinc/Aluminum, Zinc/Iron and Zinc/Aluminum/Magnesium; in an exact sense, it refers to steel coated with zinc before formation (Pre-Painted Zinc Coated Steel) The hot dip metallic coating process is also used to manufacture steel sheet and coil with coatings of aluminium, or alloy coatings of zinc/aluminium, zinc/iron and zinc/aluminium/magnesium which may also be factory pre-painted. While GI may sometimes be used as a collective term for various hot dip metallic coated steels, it more precisely refers only to zinc coated steel.
Similarly, PPGI may sometimes be used as a general term for a range of metallic coated steels that have been pre-painted, but more often refers more precisely to pre-painted zinc coated steel.
Our Company:
Taian Geruis New Material Co.Ltd is manufacturing & trading combo in Shandong Province China. Which specialize in pre-painted steel, galvanized steel, galvalume steel and different kinds corrugated steel sheet for 10 years.
6 professional production lines , more than 60 millions tons capacity each year. Strictly quality control in production and experienced sale team are always available to meet your requirements.
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