山川産業 List of Products and Services

"Espal" is an artificial sand with a round shape and smooth particle surface. It is characterized by high fire resistance, low thermal expansion rate, and high thermal conductivity. Its hardness is also one of its features, with a Mohs hardness of 9 compared to 7 for silica sand. 【Features】 ■ Round shape with a smooth particle surface ■ High fire resistance and thermal conductivity ■ Low thermal expansion rate ■ Hard *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce the high-performance artificial aggregate recycling system "Espal R," handled by Yamakawa Sangyo Co., Ltd. Due to its round and smooth particles, it achieves high strength with low resin and eliminates the need for sand baking. Additionally, it has low thermal expansion, significantly reduces bending, and improves dimensional accuracy. The high-performance artificial aggregate enables energy-saving and labor-saving in the casting process, and our system efficiently recycles it, promising increased productivity and reduced costs. 【Features】 ■ Shortens the casting process - No sand baking required - No rework needed - No cooling wait required ■ Collects shell sand and carbonized sand - No industrial waste disposal costs *For more details, please download the PDF or feel free to contact us.

"Espal #40L" is a suitable aggregate for replenishing sand in self-hardening resin lines. Due to its excellent crush resistance, it improves the recycling yield and reduces dust generation. Since it does not contain free silica, it contributes to improving the working environment at casting sites. It has a shape close to a perfect sphere, allowing for the production of molds with high strength, high density, and low thermal expansion. 【Expected Effects】 - Reduction in the amount of industrial waste and replenishing sand due to improved recycling yield - Improvement of the working environment due to reduced dust generation and free silica content - Prevention of bending defects due to reduced thermal expansion - Increase in mold strength and prevention of burning defects due to improved fillability *For more details, please download the PDF or feel free to contact us.