prepare surfaces to be coated by removing dirt,
grease and rust by
using various methods (abrasive blasting, high pressure water washing or
power wire brushing)
mix and match paint or chemicals to meet the
requirements of the job
apply primer and finishing coats using spray guns
rub down painted items surfaces between coats as
necessary
operate paint dipping baths and lifting equipment
respray or touch up any defective areas of painted
or coated items
clean nozzles, containers and hoses of machines
monitor
extractors, drying fans and heaters
mix
chemicals to meet the requirements of the customer
spray
coatings (such as paint, lacquer, enamel, silver or copper solutions)
onto manufactured products to provide finished surfaces
move
items to drying areas and unload and stack them for further painting or
packaging
clean work areas and spray equipment.
Working conditions
Most spray painters are employed full time. In
a full-time job you would work a standard number of hours per week.
Industrial spray painters usually work in factories, workshops,
vehicle crash repair businesses, or on building sites. You would
spend most of your time standing or bending over. You would wear
protective clothing, including masks and goggles when handling
chemicals and paints.
Industrial spray painters
usually work in noisy factory or construction environments.
Most of their time is spent standing or bent over.
The following components are utilized in
commercial and industrial painting applications.
Applicator
A nozzle, gun, or wand utilizes the Venturi
effect to coat a surface. The tools are meant to be handheld or used
in an automated paint spraying system. These dictate the pattern,
droplet size, angle, and intensity of the spray. Some spray systems
support multiple applicators.
Power source
A powered paint sprayer is supplied by either a
gas-powered or electric motor, whose operational strength is rated
in horsepower.
Pressure source
An air compressor or pump feeds the surface
coating through the painting system. This contributes to the flow
rate of the paint and pressure is represented in PSI. Turbines are
also commonplace.
Media
A variety of surface finishing liquids can be
applied by a spray system, though latex or oil-based paint is most
common. Other agents may require thinning to be used in spray
systems.
Reservoir
The system's integrated basin for paint
awaiting application. These range in size from small cups to paint
drums.
Handling equipment
Large, heavy-duty paint spraying systems, or
systems meant to paint outdoor terrain, often require a truck or
cart for transportation or operation.
Application enclosures
Since between 20 to 40 percent of the spray can
be lost due to overspray and droplet drift, spray booths keep
wayward particles within an enclosure. These range in size from
cabinets to garage-like environments to accommodate a variety of
components.
Ventilation equipment
Due to the airborne concentration of minuscule
paint droplets, respirators and ventilation equipment are often
legally-required components in the spray painting process. Spray
booths often incorporate a blower or overhead hood.
Electrode
An electrode is immersed in the reservoir,
attached to the applicator, or used to create an electrostatic
field. This charges the paint, and the component to be sprayed is
oppositely charged or grounded. The paint is attracted to the
component to greatly increase coating efficiency.
Curing units
Convection and infrared ovens are used to
expedite the drying process of certain paints and surface coatings.
Spinning bell/disc
A spinning bell or disc is used to atomize and
electrically charge the paint particles via centrifugal forces. An
airstream directs the paint towards the part, which has been charged
or grounded.
Part feeder
In high volume spray applications it can be
beneficial to have a conveyor or part placement system to assist in
moving unfinished and finished components between processes.
Generally speaking, there are four methods
utilized to produce droplet-sized particles and impart direction
upon the spray agent. This technology in conjunction with the
applicator determines if the spray pattern and intensity.
Airless: Paint spraying or application system using
high fluid pressure to atomize paint by forcing it through a small
orifice. Paint under high pressure is passed through a nozzle and
broken down into droplets, or "atomized," where it enters the lower
pressure region outside the gun tip. (Less air is used than in
conventional air spraying so that the problems of dry spray and
paint bounce-back is reduced.)
Airless (air-assisted):
Air-assisted airless spray process is used to alter the spray fan
shape pattern, but not to atomize the paint.
Air atomized: Paint
application system wherein paint is atomized by combination with
compressed air. System of applying paint in the form of tiny
droplets in air, i.e., paint is broken down into droplets, or
"atomized," by a spray gun as a result of being forced into a high
velocity air stream. Shape and paint density of the resulting
droplet cloud can be controlled by air pressure, paint viscosity,
and gun tip geometry.
Rotary cup/disc: Rotary spray
guns or applicators use a rapidly spinning cup/bell or flat disc to
project powders or atomize paint. Rotary cup or bell rotary
applicators produce a fan pattern, which is closer to a nozzle spray
gun. A rotating head is shaped to deliver paint forward in a
circular pattern. The bell may be directed at any angle and be moved
on robots or reciprocators, just as nozzle spray guns are. Disc
rotary applicators spin the coating media out radially. Rotating
heads that deliver paint horizontally 360° around the head are
useful on omega loop conveyor finishing lines. A disk is usually
mounted horizontally on a vertical reciprocator. Disc rotary spray
guns are also useful for internal or ID coating applications.
In an effort to reduce energy and material consumption, many spray
painting operations systems utilize high volume, low pressure (HVLP)
or low volume, low pressure (LVLP) systems to spray coat items with
large surface areas. These spray techniques are often driven by
turbines, not compressors.
SYDNEY Harbour Bridge has an annual $20 million
maintenance budget, with its exposed surfaces needing to be
repainted every five years, while other parts of the
structure last 30 years without a new coat.
IT’S one of Sydney’s great urban myths — when the painters
on the Sydney Harbour Bridge get to the end, they go back to
the beginning and start all over again.
Wrong.
The reality is that there are sections of the 52,000-tonne
structure that have not felt the tickle of a paint brush for
up to 30 years.
Justin Buhs, a senior
painter on the Sydney Harbour Bridge, paints rivets by hand.
Picture: Chris McKeen
(Source:
Daily Telegraph)
Matt Flemming stands on
a metal grill above the harbour as he prepares to spray
paint the bridge. Picture: Chris McKeen
(Source:
Daily Telegraph)
‘Sandy’ the sand blasting
robot under internal support beams in the Sydney Harbour
Bridge.
Picture: Chris McKeen
(Source:
Daily Telegraph) With close to 500,000sq m of steelwork to be
painted and kept free of rust, a crew of 15 workers is
needed to help what its builder John Bradfield called the
“blue arch of Heaven” looking her best.
The bridge’s owners, Roads and Maritime Services, even use
two robots to blast away the old lead paint from internal
sections of the Bridge.
Sydney Harbour Bridge works manager, Waruna
Kaluarachchi, in charge of the bridge’s annual $20 million
maintenance budget, said its exposed surfaces need to be
repainted every five years while others last 30 years
without a new coat.
“We can’t start at one end of the Bridge and start painting
until we get to the other end,” Mr Kaluarachchi said. “It
doesn’t work like that.”
It would take about 30,000 litres of the traditional “Sydney
Harbour Bridge Grey” paint to do just one coat. The paint is
a registered trademark colour and not for sale on the open
market.
Support beams under the
Sydney Harbour Bridge, on the northern approach. Picture: Chris McKeen
(Source:
Daily Telegraph)
Sydney Harbour Bridge - Megastructures: World's Greatest
Bridges - Australia Engineering Documentary
https://youtu.be/oxBLGtfwZPc
■ Highest point is 134m above sea level
■ Arch is 503m long
■ Main deck is 49m wide
■ There is 49m clearance underneath for shipping
■ Pylons are 89m high, and its total length (including
approaches) is 1149m
■ Road surface is replaced every 10 years
■ Flags on top of the bridge are replaced every four to six
months
■ The Bridge took almost nine years to build at a cost of
close to £10,000,000 ($300,000,000 in today’s money)
■ 1400 workers involved in building the bridge
■ It is made up of 52,800 tonnes of steel
■ It has 6,000,000 rivets weighing 3200 tonnes
■ There is 95,000m³ of concrete
■ 272,000 litres of paint was used to give the bridge its
first three coats
■ The arch can rise or fall as much as 18cm due to heating
and cooling
Education and training/entrance requirements
You can work as an industrial spray painter
without formal qualifications, but employers usually require Year
10. You will probably get some informal training on the job.
Once you are employed, you may be able to
develop, and have recognised, additional skills under the
Manufacturing or Metal and Engineering Training Packages that will
expand your career opportunities within these industries.
Employment Opportunities
Industrial spray painters work for engineering firms, appliance
manufacturers, furniture makers, foundries, motor vehicle
manufacturers and sheet metal and railway workshops. They may also
work in structural engineering, marine and Defence industries and in
the resources processing industry.
Job opportunities depend largely on the level of manufacturing
activity.
Did You Know?
Air spraying. Using atomization, air sprayers apply color
through a fine mist or spray. They also gives a smoother finish
compared to other methods.
Airless sprayers. These sprayers use higher blowing
pressure, so they're more efficient for covering large areas.
However, they also require the user to wear personal protective
equipment (PPE).
Spray painting equipment refers to the collection of devices used to
apply a surface coating to objects by the means of atomized liquids
that are propelled through the air, usually by compressed air. It
also refers to a series of devices used to optimize the coating
application.
A paint, stain, ink, varnish, lacquer, or polyurethane is
pressurized and forced into droplets or aerosol by a high-velocity
airstream that also serves to distribute the coating on a surface.
The spray is patterned onto the workpiece by an applicator, and
cleaning and curing equipment helps perfect the paint's adhesion. (Source: GlobalSpec)
Manufacturing
& Production
Vehicle Painters prepare surfaces of vehicles, match and mix colours
and and apply primer and finishing coats of paint. They may paint
new or damaged cars or apply designs or signs.Spray painters
prepare surfaces of vehicles, match and mix colours, and apply
primer and finishing coats of paint. Powder coaters apply paint and
other industrial coatings to vehicles and a range of other
manufactured items. They inspect the vehicle or surface they will be
painting, clean and prepare it, remove rough spots and sand or treat
the surface, apply an undercoat to the surface, and mix and prepare
the paint for application. They may use computerised paint mixing
technology to do this. They spray-paint or powder coat the vehicle
or article, check the quality and depth of their paintwork and
polish the finished product.
ANZSCO ID: 3243
Specialisations:Classic or Vintage Car Painter,
Alternative names:
Vehicle Refinisher, Powder Coater,
Auto Painter, Automotive Painter,
masking areas not to be painted with tape and paper
colour matching and mixing paints to match paint
shades, and selecting pre-mixed paint
- mix and match paint by eye or by using computer technology to ensure
correct colour match
applying primer and finishing coats using
spray-guns, and sanding or rubbing down
surfaces between coats
touching up paintwork and applying polish to
vehicles
removing masking papers, and waxing and polishing
finished paintwork
painting signs and artwork on vehicles
treating vehicles with rust-proofing chemicals
Working conditions
Powder coaters either work in automotive body
repair shops and panel beaters, or in industrial workshops,
factories and paint shops. Conditions may be noisy, and they may be
on their feet for extended periods. Some Powder coaters may travel
to perform their work on-site. They work regular hours but may be
required to work overtime depending on their workload. They are
exposed to paint in particle form, which can be highly toxic, and
requires that they wear protective gear such protective clothing and
face masks.
Manual Dexterity Is Important in Auto Painting Careers
As most of the work is done by hand, good manual dexterity is an
important trait in auto painting careers.
A steady grip and good hand-eye coordination will go a long way.
Being in good physical shape is important as well, as auto painting
can require long periods of standing, crouching, bending, or
kneeling. (Source:
Apprenticeships R US)
Tools and technologies
Powder coaters use a range of different paints
and spray guns, including powder-coat and electrostatic spray guns
and metal arc spraying equipment. They also use sanding and
grit-blasting machines, cleaning and rinsing materials,
pre-treatment tanks and a range of chemicals. They are usually
required to wear protective clothing including masks. Some spray
painters may be required to drive fork-lifts, cranes and trucks to
travel to jobs or reach areas to be painted.
Education and training/entrance requirements
You can work as a Vehicle Painter without
formal qualifications if you are able to demonstrate your technical
competency to employers. However, a certificate III in
Automotive Refinishing
Technology or another relevant vehicle
painting course is usually required. This course is often completed
as part of an apprenticeship.
To become a spray painter you usually have to complete a VET
qualification in Automotive Refinishing Technology or Surface
Preparation and Coating Application. You may need to be employed as
an apprentice or trainee in vehicle or industrial spray painting to
undertake these courses. Employers generally require junior
secondary school certificate or equivalent.
Vehicle spray painters may need to be certified, have a motor
vehicle repair licence, or work under the supervision of a licensed
repairer.
You can also undertake a traineeship in surface preparation and
coatings application. The traineeship usually takes 36 months to
complete.
To work as a powder coater within the motor vehicle industry you
usually need to undertake a vehicle painting apprenticeship. The
apprenticeship usually takes 42 to 48 months to complete and is
available as a school-based apprenticeship.
To work as a powder coater in the motor vehicle industry in
Australia, you will need to obtain a Motor Vehicle Repairer's
Certificate. An Australian Police Certificate is required to gain a
Motor Vehicle Repairer's Certificate.
To work as a vehicle painter in NSW, you must be certified by NSW
Fair Trading. To work as a vehicle painter in the ACT, you must have
a motor vehicle repair licence, or work under the supervision of a
licensed repairer.
Employment Opportunities
Overall employment of spray painters is projected to grow slower
than the average for all occupations.
A number of international companies in the vehicle manufacturing
industry are in the process of closing their Australian operations.
However, as with many skilled manufacturing jobs, employers often
report difficulty finding qualified workers. Therefore, job
opportunities should be good for those with industrial spray
painting experience.
Vehicle painters work for crash repair firms and motor vehicle
manufacturers. Some are self-employed, usually in partnership with
panel beaters. Experienced vehicle painters may become
representatives for paint manufacturers or assessors with insurance
companies.
Did You
Know?
To be a great automotive painter, you
need to have a great eye for colour. If you can tell the difference
between subtle differences in tint, then automotive painting might
be for you. Car companies have put out vehicles in tens of thousands
of colours over the years, and even cars painted the same colour on
the factory floor might look different after a decade or more of
varying conditions, so painters need to have a keen eye to be able
to accurately identify and replicate every colour they see. Blending
and matching is a big part of the job, and this is where a lot of
the creativity and artistry comes in, particularly for custom or
specialized paint jobs.
(Source:
Automotive Training Centres)
Manufacturing
& Production
Metal surface finishers work in metal
fabrication and engineering production operations. Electroplaters
control plating processes and maintain solutions used to coat metal
articles and other parts with non-ferrous metals.They finish metal products by cleaning, polishing, filing or
bathing them in acid solutions. They also apply protective and
decorative coatings.
Electroplaters (metal platers) coat metal plates and objects, such as
car bodies, with a protective layer of metal to prevent rust or
create a decorative finish. They start by cleaning the item to be
plated and covering areas not to be plated with resistant wax or
tape. Then they dip the item into or brush it with a plating
solution, pass electric currents through the plating solution to
oxidise the item, and finally remove and dry the freshly-plated
item.
ANZSCO ID:
322112
Alternative names: Chrome Plater, Electroplater,
Powder Coater
Electroplater - coats metal parts
and articles with a layer of decorative or protective metal such as
copper, silver, nickel or chromium. They work for electroplating
firms, anodisers, metal polishers and printed circuit board
manufacturers. Electroplaters may specialise in one of the
electroplating operations, such as anodising, barrel plating, metal
preparation or powder coating.
Metal surface finishers may perform the following tasks:
coat metal articles and parts with a layer of decorative or protective
metal such as copper, silver, nickel or chromium
prepare and maintain plating solutions
clean and prepare metal surfaces with cleaning solutions, such as acids
or alkalis, or by using blasting cabinets
apply waxes, lacquers or resistant adhesive tapes to areas not to be
plated
dip
parts in plating solutions or use selective brush plating
use
electroplating equipment, setting and adjusting controls to achieve the
desired thickness of plating
selects metal stock for job requirements
heats metal in forges and furnaces and hammers, punches and cuts metal
using hand tools and machine presses
tempers and hardens finished articles by quenching in oil or water baths
or by cooling gradually in air
prepares electrolytic and silver solutions for electroforming and
planting solution to the objects to be coated
sets and adjusts controls to regulate electric current and depositing of
coating on objects.
Working conditions
Metal surface
finishers work in production areas that can be noisy, hot, dusty and
may contain fumes. However, the work environment is generally
spacious, well ventilated and well lit. They may have to spend long
periods standing and are sometimes required to work shifts.
Electroplaters work in large metal or electronic manufacturing
plants and small parts workshops. They work with chemicals and
electricity, and are exposed to toxic fumes, all of which can be
dangerous. Their work environment can also be noisy and dirty, but
should be well-ventilated and lit.
Electroplaters use acids, alkalis, waxes, lacquers, tapes, metal
solutions and other chemicals to clean, treat and plate metal parts.
They use a range of plating equipment, such as tanks and baths, as
well as brushes and drum washers. Due to their working conditions,
electroplaters are required to wear protective clothing, gloves,
goggles and earmuffs.
Education and training/entrance requirements
You can work as a
metal surface finisher without formal qualifications. You will
probably get some informal training on the job. Entry to this
occupation may be improved if you have qualifications. You may like
to consider a VOC qualification in engineering. As subjects and
prerequisites can vary between institutions, you should contact your
chosen institution for further information.
You can also become a metal surface finisher through a traineeship
in Engineering. Entry requirements may vary, but employers generally
require Year 10.
To become an
electroplater you usually need to undertake a traineeship or an
apprenticeship. The production systems (general engineering) (level
3) traineeship usually takes 36 months to complete. The engineering
tradesperson fabrication apprenticeship usually takes 42 to 48
months to complete and is available as a school-based
apprenticeship.
Apprenticeships and traineeships
As an apprentice or trainee, you enter into a formal training
contract with an employer, enabling you to complete training towards
a nationally recognised qualification. You spend time working and
learning practical skills on the job and you spend some time
undertaking structured training with a registered training provider.
You can do an apprenticeship or traineeship if you are a
school-leaver, re-entering the workforce or as an adult or
mature-aged person wishing to change careers. You can even begin
your apprenticeship or traineeship while you're still at school.
If you are still at school you can access an apprenticeship through
your school. Talk to your school's VET Co-ordinator to start your
training now through VET in Schools. If you are no longer at school
you can apply for an apprenticeship or traineeship and get paid
while you learn and work.
Employment Opportunities
Metal surface finishers work for engineering firms, appliance and
furniture makers, foundries and fencing manufacturers. They also
work for motor vehicle accessory manufacturers, sheetmetal workshops
and jobbing (smaller) shops.