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GOST 7293 - Spheroidal Graphite Cast
Iron, SG Iron - on
Oct. 31, 2011
GOST 7293 is a Russian standard for
SG cast iron (also called as ductile
iron). This specification has
stipulated the mechanical
properties, elongation and hardness
range of SG iron, and issue a
recommended chemical composition.
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EN-GJL-200, Grey Cast Iron GG20
- on Oct. 28, 2011
EN-GJL-200 is a low grade of grey
cast iron according to Germany
standard DIN EN 1561, it can also be
written as EN-JL1030, 0.6020 or GG20
according to new standard DIN 1691.
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Sand Casting Process - Green
Sand, Resin Sand, Shell Molding, Dry
Sand - on Oct. 27,
2011
There are many types of casting
methods, such as die casting, lost
foam casting, permanent mold,
continuous mold, lost wax investment
casting etc., but sand casting
process is still the most common
casting process.
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Butterfly valve body, ductile
iron casting - on
Oct. 26, 2011
Our foundry produced some small and
large butterfly valve bodies for our
clients, most of them were made by
ductile iron. Both rough castings
and machining have high
requirements.
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DIN 1684 - General tolerances and
machining allowances for malleable
cast iron castings -
on Oct. 25, 2011
This standard is for stipulating the
general dimensional tolerances of
rough malleable iron castings,
including the thickness tolerance.
Moreover, it also shows the
permissible machining allowances for
this type of cast iron.
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Cast Steel vs Ductile Iron
- on Oct. 24, 2011
In the previous article, we have
compared the cast iron and cast
steel, herein, we will discuss cast
steel versus ductile iron.
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Produce small batch iron and
steel castings - on
Oct. 21, 2011
Dandong Foundry accept small orders,
and can produce small batch iron and
steel castings. Small batch
production is different with large
quantity production.
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Cast Iron Costs, Sand Casting
Production - on Oct.
20, 2011
As for sand castings, the cast iron
production costs include many
aspects, such as pig iron prices,
manpower costs, material costs,
machining, heat treatment, painting,
packing, foundry coke and sand
costs.
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Rockwell Hardness (HRC, HRB) to
Brinell Hardness (HB or BHN)
Conversion - on Oct.
19, 2011
Hardness is very important for
producing rough metal castings, heat
treatment and machining process.
Rockwell Hardness (HRC and HRB) and
Brinell Hardness (HB or BHN) are
most commonly used for steel and
iron castings.
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Casting Defects - Sand Mold,
Metal Casting - on
Oct. 17, 2011
Introducing various metal casting
defects with many pictures by
Dandong Foundry in China. These are
the common sand casting defects on
the surface and inside of cast iron
and cast steel parts.
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ASTM A319, A126, A278 - Standards
for Gray Iron Castings
- on Oct. 14, 2011
Brief introduction to ASTM A319,
A126, A278 standards for gray iron
castings by Dandong Foundry in
China.
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Metal Foundry and Casting Process
- on Oct. 13, 2011
Foundry is also called as casting or
founding, which is a kind of
production method for metal parts.
The process is melt metal into hot
liquid, make molds, then pour the
liquid metal into the molds.
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CSN 42 grades for grey and
ductile iron castings
- on Oct. 12, 2011
CSN 42 grades are Czech material
standard from grey cast iron and
ductile cast iron. It is difficult
to find the specification to this
standard, but we find the table of
comparisons between CSN and DIN 1691
and DIN 1693.
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Defective Castings, Waste,
Inferior Quality, Back Repaired and
Scrap Castings - on
Oct. 11, 2011
The metal castings can not meet the
commonly used standards, or can not
meet the requirements in the
purchase orders, then these castings
should be taken as rejects,
defective products.
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Iron Casting Price Sheet,
Quotation, Offer -
on Oct. 10, 2011
This is a sample of price sheet,
quotation for iron castings from
Dandong Foundry in China, including
the raw casting cost, machining cost
and painting, packing, shipping
costs.
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ASTM A159 - Standard
Specification for Automotive Gray
Iron Castings - on
Oct. 09, 2011
This specification applies to gray
iron castings, cast in sand molds,
used in the products of the
automobile, truck, tractor, and
allied industries.
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Boiler Soot Collector - Iron
Casting - on Oct.
08, 2011
Soot collector tube and iron vane
are main cast iron parts for
boilers. In the past, welding with
steel plates are the main method to
get these parts, but steel plates
are easily rusted, so alloy cast
iron is the better choice for
producing them.
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Cast Iron Pan, Grey Iron Cookware
Made in China - on
Oct. 07, 2011
Our Dandong Foundry is producing
this type of small cast iron pan for
our clients. This pan is small and
sessile, which is a widely used
cookware in Japan.
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Cast Steel Defects, Sand Casting
- Shrinkage, Sand Inclusion,
Blowhole, Porosity, Crack
- on Oct. 06, 2011
Steel castings made by sand casting
process always have some casting
defects, such as shrinkage, sand
inclusion, blowhole, porosity and
cracks etc.
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China Cast Iron Pipe and Fittings
Production - on Oct.
05, 2011
Cast iron pipe is a kind of pipe
used in water supply networks
mostly. The world's annual output of
cast iron pipe is about 700 million
tons and increasing quickly by the
rate of 3% annually.
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ASTM A48 Class 30 - Gray Cast Iron
on Oct. 04, 2011
ASTM A48 class 30 is the most common
material of gray cast iron. It is
USA grade, also equal to GG20 in
Germany, HT200 in China, FC200 in
Japan, G20 in Italy, T220 in
Australia or ISO 200.
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