What`s Powder Coating
Powder coating is a dry finishing process that has become extremely popular. Powder coating is used on a wide array of products. More and more companies specify powder coatings for a high-quality, durable finish, allowing for maximized production, improved efficiencies, and simplified environmental compliance. Used as functional (protective) and decorative finishes, powder coatings are available in an almost limitless range of colors and textures, and technological advancements have resulted in excellent performance properties.
Advantages over other coating processes
1. Environment friendly. Powder coatings contain no solvents and release little or no amount of volatile organic compounds (VOC) into the atmosphere.
2. More thicker coatings without running or sagging than conventional liquid coatings.
3. Perfect color consistency. Powder coated items generally have fewer appearance differences than liquid coated items between horizontally coated surfaces and vertically coated surfaces.
4. A wide range of speciality effects are easily accomplished using powder coatings that would be impossible to achieve with other coating processes.
5. Curing time is significantly faster with powder coatings compared to liquid coatings especially when using ultraviolet cured powder coatings or advanced low bake thermosetting powders.
Powder Coating Process
The Powder coating process involves three basic steps: raw material preparation or the pre-treatment, the powder coating application and curing.
Powder Coating Substrate Considerations
Before applying the powder coating material, you must first consider the substrate material that you will be coating. It is very important to have a clear understanding of the true composition of the surface of the part.
ALUMINUM:
ALUMINUM CASTING
COLD/HOT ROLLED STEEL
CAST IRON
BRASS
COPPER
ZINC
STAINLESS STEEL
Powder Coating Properties:
Coating Properties
Mechanical Properties
Pencil hardness GB/T 6739-1996 H-2H
Adhesion (cross-cut method) GB/T 9286-1998 Grade 0
Bending test GB/T 6742-1986 ≤ 2mm
Impact test GB/T 1732-1993 ≥50kg.cm
Cupping test GB/T 9753-1988 ≥7mm
Corrosion Resistance
Salt spray test GB/T 1771-1991 >500 hours,
no change, crossion width at crossing ≤ 2mm
Damp heat test GB/T 1740-1979 >1000 hours,
mild loss of gloss
Temperature resistance 100°C/48 hours, excellent gloss retention
Powder Coating Colours
RALAL Range, Pantone Range, and other Natural Colour Systems (NCS)
If you have a Powder Coating Colour requirement that we do not stock we are usually able to source powders from the above ranges within 48 hours.
Powder Coating Gloss Level
Gloss is measured as a percentage.
1. Matt Powders are between 20% and 30% gloss.
2. Semi-gloss Powders are usually around 60-65% gloss.
3. Gloss Powders at least 80% and can be 85%.
Powder Coating finishes
1. Textured Powder Coating:
2. Ripple/Leatherette Powder Coating.
3. Hammerite Finish Powder Coating.
4. High Temperature Powder Coating.
5. Anti-Bacterial Powder Coating.
6. Clear or Tinted Powder Coatings.
Application Field
1. In automotive applications:
a) some primers used on bodywork have converted to powder. This has given improved coating quality and provided ecological advantages.
b) where a functional as well as a decorative finish is desirable powder coatings are being used increasingly eg.
i. - wheels,
ii. - bumper bars,
iii. - mirror frames,
iv. - oil filters,
v. - battery trays,
vi. - coil springs and
vii. - heads.
2. Appliances
a) Specially formulated, hard and scratch resistant powder coatings are replacing the energy-intensive porcelain finishes on washer tops and lids.
b) Powder coatings are being used on range housings, freezer cabinets, drier drums, and microwave oven cavities.
c) Outdoor furniture, farm and garden implements and garden tractors also are being finished with powder coating materials. - Interior fluorescent light reflectors are coated using a highly reflective, very thin powder coating.
d) Exterior lamp housings on highway and parking deck fixtures are coated with specially formulated powder which give ultra violet light protection and added corrosion protection
Powder Coated Sheet Metal,White Powder Coated Sheet Metal,Aluminium Sheet Powder Coated,Powder Coated Steel Plate Suzhou FCE precision electronics Co., LTD , https://www.sjfukeyifcesz.com
VAG piston valve research and development principles and introduction
R & D principles and introduction of VAG piston valve Unlike the butterfly valve and gate valve, which are used only for pipeline cutting, the piston valve is a valve that can meet various special adjustment requirements. The adjustment function is based on a piston-like cylinder in the valve cavity for axial movement to achieve. Product Features Design Features: Adapt to the fluid conditioning requirements of different occasions in the factory; Best anti-cavitation characteristics; High flow capacity; Long service life of sealing system; Double sealing of metal and elastic material; Closely closed; Pressure balanced drive; Small operating force Depending on the operating conditions of different requirements, the replacement of export parts stainless steel piston is guided reliably sliding does not produce tilt or run sluggish can be installed in any position. How it works: Flow from the axial arc into the shell, regardless of the location of the piston, the valve cavity regardless of any location of the flow cross-section are ring-shaped, at the exit axis contraction, in order to avoid possible cavitation due to throttling Body and pipeline damage, while regulating the linearity of its standard size: DN150 to DN1200. Features: The control valve used in the fluid; under the open conditions of circulation cross-section for the ring; linear adjustment; integration of the valve body; according to different working conditions to take different control parts; outlet parts by the longitudinal movement of the crank drive mechanism control; Standard gearbox with position indicator; flange standard according to EN1092, PN10 / 16; body length according to EN558-1, basic sequence 15 (DIN3202, F4) standard. Application Diversion: The VAG piston valve can be used as a relief valve. It must be equipped with an annular venting device and can also be used as an explosion-proof pipe valve. Storage: VAGLH or E-type piston valve can be used as a liquid level or pressure regulator valve Water: VAGLH-type or S-type piston valve can be used as a flow control valve, E or LH type can be used as a drain valve or irrigation valve. Water Treatment / Sewage Treatment: The VAG E-type piston valve can be used as a pump start-up protection valve or with special regulating outlet components as well as a water treatment plant flow control valve. VAG E-type piston valve can also be used as a sewage treatment plant gas control valve. Water supply: Depending on the operating conditions, different outlet components are used as pressure / flow control valve, eg pipe network pressure balance. R & D principles and introduction of VAG piston valve Unlike the butterfly valve and gate valve, which are used only for pipeline cutting, the piston valve is a valve that can meet various special adjustment requirements. The adjustment function is based on a piston-like cylinder in the valve cavity for axial movement to achieve. Product Features Design Features: Adapt to the fluid conditioning requirements of different occasions in the factory; Best anti-cavitation characteristics; High flow capacity; Long service life of sealing system; Double sealing of metal and elastic material; Closely closed; Pressure balanced drive; Small operating force Depending on the operating conditions of different requirements, the replacement of export parts stainless steel piston is guided reliably sliding does not produce tilt or run sluggish can be installed in any position. How it works: Flow from the axial arc into the shell, regardless of the location of the piston, the valve cavity regardless of any location of the flow cross-section are ring-shaped, at the exit axis contraction, in order to avoid possible cavitation due to throttling Body and pipeline damage, while regulating the linearity of its standard size: DN150 to DN1200. Features: The control valve used in the fluid; under the open conditions of circulation cross-section for the ring; linear adjustment; integration of the valve body; according to different working conditions to take different control parts; outlet parts by the longitudinal movement of the crank drive mechanism control; Standard gearbox with position indicator; flange standard according to EN1092, PN10 / 16; body length according to EN558-1, basic sequence 15 (DIN3202, F4) standard. Application Diversion: The VAG piston valve can be used as a relief valve. It must be equipped with an annular venting device and can also be used as an explosion-proof pipe valve. Storage: VAGLH or E-type piston valve can be used as a liquid level or pressure regulator valve Water: VAGLH-type or S-type piston valve can be used as a flow control valve, E or LH type can be used as a drain valve or irrigation valve. Water Treatment / Sewage Treatment: The VAG E-type piston valve can be used as a pump start-up protection valve or with special regulating outlet components as well as a water treatment plant flow control valve. VAG E-type piston valve can also be used as a sewage treatment plant gas control valve. Water supply: Depending on the operating conditions, different outlet components are used as pressure / flow control valve, eg pipe network pressure balance.