Medium-pressure Injection Molded Ceramic Cores "℃ MONARC"


Noritake has succeeded in developing new Ceramic Cores with excellent reactivity resistance manufactured in medium-pressure injection molding.


The newly developed "℃ MONARC" series of Ceramic Cores are truly outstandingcores with excellent dimensional stability at high temperature.


  • High Reactivity Resistance
    The high-purity material is newly introduced to achieve cores with excellent reactivity resistance! It reduces reactivity defects at the interface area.
  • Reducing Mold Cost and Maintenance Cost 
    It enables molding with 1/5 to 1/10 less pressure compared to high-pressure injection molding method thereby contributing to the reduction of various costs such as metal die and anti-abrasion coating, etc.
  • Compatible with Your Existing Die
    By adjusting the shrinkage rate, you can use your existing diemade by other manufacturers. We offer to prototype your own die. We offer trial service using your existing mold. (Some diesrequire modifications at extra cost.)
Material model ℃ MONARC
N300 N400 N500
Major ingredients SiO2-ZrSiO4 SiO2-ZrSiO4 SiO2-Al2O3
Manufacturing method Medium-pressure injection molding   
Trace impurities(ppm) Fe 80 80 30
Pb <25 <25 <25
Bi <1 <1 <1
Ag <1 <1 <1
Characteristic values Porosity 34.0 33.0 34.0
Themal expansion at1,000℃ 0.25 0.25 0.10
Bending Strengs(Mpa) at RT 6 9 8
at 1,000℃ 20 25 24
Size Maximum Length ~L500mm
Minimum Thickness 0.60mm
Cast Type CC CC/DS/SC

<Comparison with existing products>

Material model N200 ℃ MONARC N600 N700
N300 N400 N500
Manufacturing method Pouring method medium-pressure injecsion molding High-pressure injecsion molding
Core properties Reacitivity resistance ★★★ ★★★ ★★★+ ★★ ★★
Smoothness of the product sueface ★★★ ★★★ ★★★ ★★★ ★★★
High temperature creeping ★★★ ★★★ ★★
Costs Manufacturing Cost ★★★ ★★
Mass Productivity ★★★ ★★
Jig costs Die costs ★★★ ★★★
Die life ★★★ ★★★