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Cast Iron Ductile Iron -
on Dec 31, 2010
Some buyers may wonder the relations
of cast iron and ductile iron. So,
what is cast iron? Cast iron should
be a kind of metal, or specific iron
casting part. Iron foundry melts the
pig iron into hot liquid iron, and
pour it into various heat-resistant
molds, then get cast iron parts, or
called iron castings.
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Iron
Foundry - on Dec 30, 2010
Iron foundry is the metal foundry
mainly producing iron castings.
There are thousands of iron
foundries in China. Herein, I will
talk about some main aspects about
the iron foundry in China.
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Cast Iron and Cast Steel
- on Dec 30, 2010
Dandong Foundry has produced cast
iron and cast steel for over 50
years. After I joined this company,
I started to learn about some about
iron and steel castings, and start
to write some articles to share our
experiences.
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Ductile and Malleable -
on Dec 29, 2010
Some buyers are confused about the
ductile and malleable cast iron.
Actually, I was confused about these
concepts for long time. I just knew
that our Dandong Foundry could
produce the ductile iron, but can
not produce malleable iron. As for
what is malleable cast iron, I never
made it clear, but herein, I will
talk about these two definitions.
- GB T 9439 - 1998 Standard for
Grey Cast Iron - on Dec 27, 2010
This is a Chinese standard for
stipulating the physical properties
of grey cast iron, or called as gray
iron. This standard is similar with
the other standards for grey iron
such as ASTM A48 in USA, DIN 1691 in
Germany and ISO 185. The following
is the main content of GB/T
9439-1998 standard for your
reference.
- NF A32 - 201 1997 Standard
for Ductile Cast Iron - on Dec
27, 2010
We met the FGS degrees from Franch
and Italy clients, but it is very
difficult to find the standard NF
A32-201 from internet. We found they
are similar with China standard GB
T1348 1998, so we modified the GB
T1348 into NF A32 - 201 1997
according to our understanding.
- DIN 1693 1997 Standard for
Ductile Iron - on Dec 27, 2010
This is a Germany standard for
stipulating the physical properties
of ductile iron. Many iron foundries
in China could understand this
standard very well. This standard is
similar with the other standards for
nodular iron such as ASTM A536 in
USA, GB T1348 in China, KS D4302 in
Korea and ISO 1083.
- KS D4302 1994 Standard for
Nodular Iron - on Dec 27, 2010
This standard is for stipulating the
physical properties of nodular iron,
which is also called as ductile
iron. This is a Korea standard, but
this standard was similar with the
other standards for nodular iron
such as ASTM A536 in USA and GB
T1348 in China.
- GB T 1348 1998 Standard for
Ductile Cast Iron - on Dec 27,
2010
This standard is for stipulating the
physical properties of ductile cast
iron. In China, the engineers in
iron foundries are using it as the
inspection standard. This standard
was developed from the ISO 1083 and
ASTM A536.
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ISO 1083 1987 Standard for
Ductile Iron - on Dec 27, 2010
ISO 1083 1987 defines the grades and
the corresponding requirements for
spheroidal graphite cast iron, which
is also called as ductile iron or
nodular iron. The latest version of
this standard is ISO 1083 2004,
however, the main content was not
changed since version 1987.
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JIS G5502 1995 Standard for
Ductile Iron - on Dec 27, 2010
This is a Japanese industrial
standard specifies the physical
properties of spheroidal graphite
iron castings, which are also called
as ductile iron. The latest version
is JIS G5502 2001. However, the main
content was not changed.
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BS 2789 1985 Standard for
Nodular Iron - on Dec 27, 2010
This is a UK standard for
stipulating the physical properties
of nodular iron, which is also
called as ductile iron, spheroidal
graphite or nodular graphite cast
iron, This standard has been
replaced by BS EN 1563 1997.
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NF A32 - 101 Standard for
Grey Iron - on Dec 27, 2010
We met the FGL degrees from Franch
and Italy clients, but it is very
difficult to find the standard NF
A32-101 from internet. We found they
are similar with China standard GB
T9439 - 1998, so we modified the GB
T9439 - 1998 into NF A32 - 101 1997
according to our understanding.
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KS D4301 - 1985 Standard for
Gray Cast Iron - on Dec 27, 2010
This is a Korea standard for
stipulating the physical properties
of gray cast iron, or called as grey
iron. This standard is similar with
the other standards for gray iron
such as ASTM A48 in USA, DIN 1691 in
Germany and ISO 185.
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Gas Burner
- on Dec 23, 2010
Gas burner is also called as stove
burner or gas stove burner. We have
produced gas burners for years in
China, so always wanted to write an
article for burner buyers to learn
about all issues related with gas
burners.
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Casting
- on Dec 22, 2010
I have worked for years in iron and
steel casting area, so always wanted
to write an article to introduce all
aspects for iron and steel casting,
and hope this article could help
casting purchasers to quickly
understand all main issues about
castings.
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Nodular
Iron - on Dec 21, 2010
Nodular iron is also called nodular
cast iron, ductile iron and
spheroidal graphite cast iron.
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Grey
Cast Iron - on Dec 21,
2010
The tensile strength of grey cast
iron, plastic and toughness are much
lower than cast steel, but it has a
considerable compressive strength as
same as cast steel, cast iron is
also commonly used in the worst
mechanical properties.
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JIS G5501
for Grey Iron - on Dec 20,
2010
JIS G5501 1995 standard is a Japan
Standard for grey iron. This
standard has stipulated the tensile
strength and hardness of grey cast
iron. Herein, we listed the main
content of this standard for your
reference.
- DIN 1691 for
Grey Iron - on Dec 20,
2010
DIN 1691 - 1985 is an old standard
for grey iron, however, many
designers are still using it as the
standard for the tensile strength
and hardness of grey cast iron. So,
herein, we listed the main content
of this standard for your reference.
- ISO 185 for
Gray Cast Iron - on Dec
20, 2010
ISO 185 is a standard for gray cast
iron. It includes the tensile
strength and hardness of gray iron.
This standard can be a good
reference for designers, buyers and
suppliers to gray iron castings.
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Small
Cast Door - Dec 19, 2010
Small cast door is the small doors
made by cast iron, which was also
called as small casting door, stove
casting door or cast iron door.
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Hydraulic Warping Head GR220
- on Dec 16, 2010
Hydraulic warping head is used for
the hydraulic capstan in tugboats.
The material is mainly grey cast
iron BS1452 GR220.
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Bearing Housing Casting -
on Dec 16, 2010
Bearing housing can be made by made
by cast iron, some are by cast
steel, forged steel, stainless
steel, aluminum and even by plastic.
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Cast
Iron Flange - on Dec 11,
2010
How to purchase cast iron flange in
China? Cast iron flange means the
flange plate made by cast iron.
Actually, not all flanges were made
by cast iron, many flanges were made
by forged steel.
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Ductile Iron Manhole Cover
- on Dec 09, 2010
Ductile iron manhole cover means the
manhole covers made by ductile iron,
not by gray iron. The buyers choose
the ductile iron to get better
tensile strength.
- DIN 1683 - 1 Rough Steel
Casting Tolerance Standard - on
Dec 08, 2010
DIN 1683-1 is a general tolerance
standard for rough steel castings.
Our Dandong Foundry found this
standard is useful to the buyers and
suppliers.
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The treatments to rough castings
- on Dec 08, 2010
When we get the rough castings, we
need to do some treatments to
improve or inspect the casting
quality. These treatments include
heat treatment, anti-rust treatment,
rough machinating, repairing etc.
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How to
inspect the quality of iron
castings (Part 2) - on Dec 06,
2010
In the previous article, we have
talked about some main aspects of
inspecting iron castings, such as
dimensions, tensile strength,
hardness, surface and inside
defects, herein, we continue to talk
about some other aspects including
yield strength, elongation, chemical
components, compact property.
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Grey Iron Framework - on
Dec 05, 2010
One friend asked some questions
about grey iron framework, I shared
some useful information about the
casting process and technical issues
to this product, and hope these
information will be helpful to the
other buyers.
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How to
inspect the quality of iron
castings - on Dec 03, 2010
Many buyers are not familiar with
the inspection to iron castings, so
they have no idea how to inspect and
control the quality of their
products.
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Tensile Test Specimen -
on Dec 2, 2010
Tensile test specimen is also called
tensile test bar, which is used to
test the tensile strength, yield
strength and elongation for the cast
iron and cast steel materials. It is
the most important test method to
iron and steel castings.
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