Assembly or disassembling these shelves requires no
tools although a rubber mallet is useful. Wire
shelving is used in a broad range of commercial and
home applications, retail outlets and industrial
applications such as in restaurants, food service
industries and factories due to its ability to stay
clean and resist rust and mold. Wire shelving is
increasingly being used in home kitchens as well.
Wire shelving is excellent in areas where fire
prevention is stressed because its open design
allows sprinkler systems to function where sold
shelving might block water flow.
Incompatible Standards and Labeling
Not all pole diameters and shelf widths in use are
the same. The various plastic connectors are not
interchangeable among manufacturers. Many use
proprietary designs that do not fit with the systems
of other makers. This variance tends to make it
difficult to mix and match various brands of
Weight capacity ratings
Shelves are manufactured in many different weight
limits from 150kg to 300 kg. It is important to note
that most shelving is rated per shelf level for
evenly distributed loads. The definition of a
capacity rating may vary from manufacturer to
manufacturer, and should be confirmed before
shelving is used at or near its listed capacity.
Caster Sets, Wire Racks.
Chrome plating otherwise simply known as chrome, is
a technique of electroplating a thin layer of
chromium onto a metal object. The chromed layer can
be decorative, provide corrosion resistance, ease
cleaning procedures, or increase surface hardness.
The component will generally go through these
• Degreasing to remove heavy soiling.
• Manual cleaning to remove all residual traces of
dirt and surface impurities.
• Various pre-treatments depending on the substrate.
• Placed into the chrome plating vat and allowed to
warm to solution temperature.
• Plating current applied and component is left for
the required time to attain thickness.
This process has many variations depending on the
type of substrate being plated upon. Different
etching solutions are used for different substrates
such as Hydrochloric, hydrofluoric, and sulfuric
acids. Ferric chloride is also a popular solution
for the etching of Nimonic alloys. When chrome
plating is done, the component will be inserted into
the chrome plating vat electrically live or the
component will have a conforming anode either made
from lead/tin or platinized titanium. A typical hard
chrome vat will plate at about 25 micrometers
(0.00098 in) per hour. Chrome plating chemicals are
highly toxic and disposal of these chemicals are
regulated under local laws in most countries.
Electro Plating also known as electrochemical
polishing is a process that removes materials from a
metallic piece. Electro plating polishes, passivates
and deburrs metal parts. The process of electro
plating involves the metal piece immersed in a
temperature controlled bath of electrolyte and
connected to the positive terminal (anode) of a DC
power supply, the negative terminal being attached
to an auxiliary electrode (cathode). The metal on
the surface is oxidized and dissolved in the
electrolyte when a current passes from the anode. At
the cathode, a reduction reaction which is normally
a hydrogen evolution, takes place. The electrolytes
commonly used for electro polishing are concentrated
acid solutions that have a high viscosity such as
mixtures of sulfuric acid and phosphoric acid. Other
electro polishing electrolytes also frequently used
include mixtures of perchlorates with acetic
anhydride and methanolic solutions of sulfuric acid.
There are two ways of achieving electro polishing.
The first is when the protruding parts of a surface
profile are dissolved faster than the recesses. This
is achieved by applying specific electrochemical
conditions which usually involves a mass transport
limited dissolution reaction. The second way of
electro polishing is by making sure that the surface
heterogeneities due to crystal orientation in a
polycrystalline material are suppressed and that no
pitting occurs. These conditions, often associated
with surface brightening, are usually fulfilled with
the above mentioned polishing electrolytes and with
proper process control.
Electro polishing is popularly used in the metal
finishing industry because of its simplicity and it
can be applied to objects of complex shape. Some of
the products of electro polishing are stainless
steel drums of washing machines and stainless steel
surgical devices. Electro polishing is also used in
the preparation of thin metal samples for
transmission electron microscopy. This is because
electro polishing does not cause mechanical
deformation of surface layers that usually occurs
when mechanical polishing is used. Anodic
dissolution under electropolishing conditions
deburrs metal objects due to increased current
density on corners and burrs. Ultra High Vacuum (UHV)
components are typically electro polished in order
to have a smoother surface for improved vacuum
pressures, outgassing rates, and pumping speed.
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