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furan resin sand casting
Defects of furan resin sand castings and their countermeasures
1.Porosity and pinholes Causes： Measures to prevent pore defects In response to the above reasons, take the following corresponding countermeasures:Select resin with low nitrogen content and try every means to reduce the…
The main technical parameters of furan resin sand casting raw materials
1.Furfuryl alcohol content The furan resin with acid as a catalyst generally contains more than 50% furfuryl alcohol. The most commonly used is urea-formaldehyde furfuryl alcohol resin. As the furfuryl alcohol content…