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Graphite Stopper Rod - Dirgodaz Amol Refractories Company
Refractories for Metal Casting Industry

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General Description

Dirgodaz Amol Refractories Company produces various shaped refractories used in the metal casting industry.

Production Process

The above products are manufactured using different raw materials or forming processes such as isostatic pressing and slip casting, followed by high-temperature sintering. This production process results in high-quality parts with uniform microstructure and outstanding technical properties.

Key Advantages

  • Increased service life and reliable performance
  • Ability to cast more pieces before replacement
  • Maximum geometric conformity with other components
  • Optimal molten metal flow control with high dimensional accuracy
  • Resistance to thermal shock and chemical corrosion

Technical Features

Physical and Mechanical Properties

  • High thermal stability
  • Suitable thermomechanical properties
  • Good thermal shock resistance
  • Low wettability
  • High resistance to erosive wear

Product Types

Carbon-Containing Refractories for Casting Industry

  • Graphite Stopper Rod
  • Graphite Nozzle
  • Graphite Stopper Head

Alumina-Silica Refractories for Casting Industry

  • Nozzle
  • Well Block
  • Stopper Head

Graphite Stopper Rod

The graphite stopper is a critical component of the molten metal flow control system and is used to regulate the flow of molten metal from the nozzle to the mold in casting systems.

Applications

These products are primarily used in casting processes for various metals, including gray cast iron, ductile iron, and aluminum and copper alloys. Graphite stoppers are produced in open-bottom and closed-bottom types for ductile and gray irons.

Technical Specifications of Graphite Stopper Rod
Parameter SD-GS1 SD-GS2
Density (g/cm³) 2.1-2.2 2.2-2.5
Flexural Strength (kg/cm²) 100 90
Porosity (%) 12 15
Al₂O₃ (%) 40 20
SiO₂ (%) ≤40 ≤30
SiC (%) - 20
C (%) 20-30 20-40