INDUSTRY COMPONENT

Core Body

Core body is the central component of a metal casting mold core that creates internal cavities and complex geometries in cast metal parts.

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Component Specifications

Definition
The core body is a precision-engineered component of a metal casting mold system, typically made from refractory materials, that forms the internal voids, undercuts, and intricate features of cast metal products. It is inserted into the mold cavity before pouring molten metal, withstands high temperatures and metallostatic pressure, and is removed after solidification to create hollow sections or complex internal structures that cannot be formed by the mold alone.
Working Principle
The core body operates by being precisely positioned within the mold cavity to displace molten metal during pouring, creating negative spaces in the final casting. It must maintain dimensional stability under thermal stress, resist metal penetration, and allow for proper venting of gases. After solidification, the core is mechanically broken down or chemically dissolved to be removed from the casting.
Materials
Typically made from silica sand bonded with organic resins (phenolic, furan) or inorganic binders (sodium silicate, phosphate), or from ceramic materials for high-temperature applications. Advanced cores may use 3D-printed sand or soluble ceramic materials.
Technical Parameters
  • Permeability 80-150 AFS
  • Surface Finish Ra 3.2-12.5 μm
  • Thermal Stability Up to 1600°C for ceramic cores
  • Compressive Strength 1.5-4.0 MPa
  • Dimensional Tolerance ±0.1-0.5 mm depending on size
Standards
ISO 8062, DIN 1681, ASTM B611

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Core Body.

casting core mold core body sand core metal casting components foundry tooling core manufacturing casting defects prevention Core Body Core Body in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Metal Casting Mold Core

Removable insert for creating internal cavities in metal casting molds

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Engineering Analysis

Risks & Mitigation
  • Core shift during pouring
  • Incomplete core removal
  • Gas entrapment
  • Metal penetration
  • Thermal cracking of core
FMEA Triads
Trigger: Inadequate core support or improper positioning
Failure: Core shift leading to dimensional inaccuracies
Mitigation: Use precise core prints, chaplets, and verification fixtures
Trigger: Insufficient core strength or improper handling
Failure: Core breakage during mold assembly or pouring
Mitigation: Optimize binder content, implement proper handling procedures, use core reinforcements
Trigger: Poor venting design or excessive binder content
Failure: Gas defects (blows, pinholes) in casting
Mitigation: Design adequate vent channels, control binder ratios, apply proper core coatings

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
ISO 8062 Geometric tolerancing for castings, Class CT6-CT10 depending on application
Test Method
Dimensional verification using CMM, strength testing per ASTM C133, permeability testing per AFS standards

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between a core body and a mold cavity?

The mold cavity forms the external shape of the casting, while the core body creates internal features, holes, and passages that cannot be formed by the mold alone.

How are core bodies removed from castings?

Core bodies are typically removed through mechanical knockout (shaking/vibrating), thermal decomposition (burning out organic binders), or chemical dissolution (using water-soluble or acid-soluble materials).

What causes core-related casting defects?

Common defects include core shift (misalignment), core breakage, gas defects from inadequate venting, and metal penetration into the core surface due to insufficient density or coating.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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