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ASTM A 834 Common Requirements Standard for Iron Castings for General Industrial Use

17th June 2015
This specification also covers a group of supplementary requirements which may be applied to the above specifications as indicated herein. These are provided for use when additional testing or inspection is desired and apply only when speci... Read >

Metal Casting Price Breakdown 2013.07.08

17th June 2015
This article was originally written by the president of Dotson Company, we are just sharing it! The following casting price breakdown is typical of the foundry industry, not much different than other manufacturers. In foundries it is very difficult to ... Read >

How to calculate cast steel cost?

14th April 2011
The calculation of cast steel parts are very complex. It need many professional knowledge to cast steel production processes, material composition and costs etc. However, we could introduce some main aspects for buyers to get an approximate estimation to ... Read >

Typical Defects of Ductile Iron Castings

13th April 2011
The following typical defects of ductile iron castings are based on the experiences of process engineers from Dandong Foundry in China. We hope these information could be helpful for other iron foundries and casting buyers. 1. abnormal and degraded nod... Read >

Inspection Methods to Ductile Iron Castings

05th April 2011
Normal casting defects of ductile iron include some macro-defects, such as air holes, sand inclusion, slag inclusion, shrinkage or shrinkage cavity, and some micro-defects, such as unqualified nodularity rate and too large grain size, etc. The inspecti... Read >

Cast Iron Price Trend and Production Costs in 2011 of China

30th March 2011
After Chinese New Year (CNY) holiday, the cast iron prices in China have been increased largely, and this change was sudden and serious, so many clients were doubted about what reasons have caused the price increasing, and what price trend will it be in 2... Read >

The difference between green sand casting process and resin sand casting process

17th March 2011
In the past, one client asked us the difference between green sand casting process and resin sand casting process. Herein, I make a brief introduction to these two casting processes, and hope it could be helpful for other casting purchasers. Green sand... Read >

Cast Iron Shrinkage Defect

15th February 2011
The cast iron shrinkage has very large affect to the quality of iron castings. It will reduce the tensile strength and elongation, so the iron castings will be broken or penetrated at the shrinkage area. According to my working experience in Dandong Fo... Read >

EN-GJS-400 Ductile Iron

09th February 2011
The ductile iron grade of EN-GJS-400 is from Germany standard DIN EN 1563. It has been replaced by the standard DIN 1693, so the EN-GJS-400 has been changed into GGG40. However, according to the DIN EN 1563, this grade should include four grades as EN... Read >

CASTING

07th February 2011
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. Ok,... Read >

Cast Iron vs Cast Steel

31st January 2011
One of our clients asked me which one is better for cast iron vs cast steel. I will have to say, no one is better, but just which one is more suitable to your products. Firstly, let us know what is the cast iron and cast steel. Cast iron usually re... Read >

Ductile Iron Manhole Cover

05th January 2011
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. Ductile iron manhole covers are easily to purchase in China since most of iron foundries can ... Read >

Gas Burners

22nd November 2010
Gas burners are the natural gas combustion devices, which make the natural gas and air separately or mixed into the combustion zone to achieve stable combustion. Gas burners are usually made by cast iron, especially by gray cast iron. Gas burners are the ... Read >

Properties of Gray Cast Iron

10th November 2010
Gray cast iron can be regarded as carbon steel as matrix organization with graphite flakes added. Gray cast iron can be divided into three categories according to the different matrix organization: ferritic matrix of gray cast iron, pearlitic gray cast ir... Read >