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28
2022
-
03
At present, the main varieties of commercial coated sand in China
It consists of quartz sand, thermoplastic phenolic resin, urotropine and calcium stearate without relevant additives.Suitable for the production of general cast iron parts.
production engineering
After the four stages of dry mixing method, cold film covering method, warm film mulching method and hot film covering method, at present, the production of film covering sand is almost all using hot film covering method.
25
01
Characteristics and technological application of turning sand casting
Sand casting has a long history, dating back thousands of years; its application is everywhere in the world.
China's casting mold industry development to today, has experienced a difficult process
Since 1977, due to the vigorous development of China's machinery, electronics, light industry, instrument, transportation and other industrial departments, the demand for casting mold is more and more in quantity, the quality requirement is getting higher and higher, and the supply period is getting shorter and shorter.
High pressure and high speed filling die cast aluminum type are the two major characteristics of die cast aluminum.
High production efficiency: high machine productivity, such as domestic J 3 horizontal cold air die cast aluminum 600~700 times every eight hours; die cast aluminum life, one die cast aluminum, die cast aluminum clock alloy, life can reach hundreds of thousands of times, even millions of times; easy to realize mechanization and automation.
Waffless casting method
Lost wax method (lost wax method), or lost wax casting method, was a production process in ancient China.
Precision ast wax is mainly used in aviation industry, civil precision casting, and is also widely used in ships, automobiles, telecommunications machinery, machine tools and other industries.
26
2021
09
Factors of the cost of casting sand casting
There are many factors affecting the cost of sand casting.Here we list a number of the main factors, and hope that this information can help cast customers.
Development history of coated sand
Cofilm sand was invented by Dr Cronin, Germany, during World War II, and the process of mixing powder thermosetting phenolic resin with the original sand machinery and curing when heating.
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