This video are natural sand these are process , foundry sand, molding sand, casting sand.
The most common type of sand, found in non-tropical coasts and continental areas, is called silica, and usually takes the form of quartz. This type of sand is extremely resistant to weathering due to its chemical composition (SiO2), which makes the grain very hard.
Green sand is an industry favourite because of its low cost and solid overall performance. The “green” in green sand refers to the moisture content present in the mixture during pouring. Green sand molds have sufficient strength for most sand casting applications
31 дек 2020
