INDUSTRY COMPONENT

Bore Lining

Bore lining is a refractory sleeve or tip component that protects machine openings from high temperatures, abrasion, and chemical corrosion in industrial processes.

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Component Specifications

Definition
A bore lining is a specialized refractory component designed as a sleeve or tip that lines the internal diameter of machine openings, nozzles, or channels. It serves as a protective barrier in high-temperature industrial applications, preventing thermal degradation, mechanical wear, and chemical attack on the underlying machine structure. Typically used in metal processing, glass manufacturing, and chemical reactors, it maintains dimensional stability and process efficiency under extreme conditions.
Working Principle
The bore lining operates by providing a sacrificial or durable layer between the process medium and the machine body. It absorbs thermal stress, resists abrasive wear from flowing materials, and prevents chemical reactions that could damage the equipment. Its refractory properties allow it to maintain integrity at temperatures exceeding 1000°C, while its precise geometry ensures consistent flow or alignment in the machine operation.
Materials
High-alumina ceramics (Al2O3 content 85-99%), silicon carbide (SiC), zirconia (ZrO2), fused silica, or advanced refractory composites. May include bonding agents like phosphate or clay binders. Operating temperature range: 1000-1800°C depending on material grade.
Technical Parameters
  • Length 50-1000 mm
  • Density 2.5-4.0 g/cm³
  • Inner Diameter 10-500 mm
  • Wall Thickness 5-50 mm
  • Pressure Rating Up to 10 bar
  • Thermal Conductivity 2-30 W/m·K
  • Max Service Temperature 1600°C
Standards
ISO 5019, DIN 1089, ASTM C24

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Bore Lining.

bore lining refractory sleeve ceramic liner high-temperature protection industrial nozzle lining abrasion resistant lining thermal insulation component Bore Lining in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Refractory Sleeve or Tip

A refractory component at the end of a stopper rod that controls molten metal flow in continuous casting.

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Engineering Analysis

Risks & Mitigation
  • Thermal shock cracking
  • Erosion from abrasive flows
  • Chemical corrosion from molten materials
  • Installation misalignment causing leaks
  • Material degradation over time reducing protection
FMEA Triads
Trigger: Rapid temperature changes exceeding material thermal shock resistance
Failure: Cracking or spalling of lining
Mitigation: Use graded thermal expansion materials, implement controlled heating/cooling cycles, apply protective coatings
Trigger: High-velocity abrasive particle flow
Failure: Erosion and thinning of lining wall
Mitigation: Select harder materials like silicon carbide, design smoother internal surfaces, implement flow conditioning upstream
Trigger: Chemical reaction with process materials
Failure: Corrosion and loss of structural integrity
Mitigation: Choose chemically inert materials like high-alumina ceramics, monitor process chemistry, implement protective purge gases

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.5% on inner diameter, ±1% on length for precision applications; general applications ±2%
Test Method
ISO 5019 for dimensions, ASTM C20 for apparent porosity, ASTM C133 for crushing strength, thermal shock testing per ASTM C1171

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 industries commonly use bore linings?

Primary industries include steel and metal foundries (for ladles and tundishes), glass manufacturing (forehearths and feeders), chemical processing (reactor nozzles), and cement production (kiln inlets).

How often should bore linings be replaced?

Replacement intervals vary from weeks to years based on material, operating temperature, and abrasion exposure. High-wear applications may require monthly inspection, while stable processes can last 1-3 years.

Can bore linings be custom-shaped?

Yes, most are custom-manufactured to match specific machine geometries using precision molding, extrusion, or machining of refractory materials before firing.

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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