Rim/Lip: Outer Diameter 200-500 mm, Lip Thickness 10-25 mm

Component Specifications

Definition

The rim or lip is a critical structural component of a crucible body, typically forming the upper edge where molten material is poured. It is engineered to withstand extreme thermal cycling, chemical corrosion from molten metals or materials, and mechanical stress during handling. The design ensures smooth pouring without dripping, maintains crucible shape under load, and often includes features for secure lid placement or handling tool engagement.

Working Principle

The rim/lip functions by providing a reinforced edge that distributes thermal and mechanical stresses, preventing cracking or deformation. During pouring, its geometry controls fluid flow to minimize turbulence and spillage. It often acts as a sealing surface for lids to reduce heat loss and contamination, and may include notches or lips for ergonomic handling with tongs or lifters.

Materials

High-alumina refractory ceramic (e.g., 85-99% Al2O3), silicon carbide (SiC), graphite, or fused silica, chosen based on operating temperature (up to 1800°C), chemical resistance, and thermal shock stability. Often coated with anti-wetting agents like boron nitride.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Lip Thickness	10-25 mm
Outer Diameter	200-500 mm
Pouring Spout Angle	30-45 degrees
Thermal Shock Resistance	>200 cycles
Max Operating Temperature	1600°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 13765-2, DIN 51045

Parent Products

This component is used in the following industrial products

Crucible Body

The main structural container of a crucible that holds materials during high-temperature processing.

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Engineering Analysis

Risks & Mitigation

Thermal cracking from rapid temperature changes
Chemical erosion from molten metals/slags
Mechanical failure during handling or pouring
Poor pouring control leading to spills or oxidation

FMEA Triads

Trigger: Thermal stress exceeding material limits
Failure: Cracking or spalling of the rim
Mitigation: Use materials with high thermal shock resistance; implement gradual preheating/cooling cycles

Trigger: Chemical attack from molten materials
Failure: Erosion or corrosion weakening the lip
Mitigation: Select chemically inert materials; apply protective coatings like boron nitride

Trigger: Impact during handling
Failure: Chipping or breakage
Mitigation: Design with reinforced edges; train operators on proper tool use and handling procedures

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±1.5 mm on critical dimensions per ISO 13765-2

Test Method

Dimensional inspection via calipers, thermal cycling tests, and non-destructive testing for cracks

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Rim/Lip

Manufacturer profiles associated with Rim/Lip.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

Related Components

Thermal Barrier

High-temperature insulation component for refractory bowls that minimizes heat transfer and protects surrounding equipment.

Frequently Asked Questions

What is the primary function of a crucible rim/lip?

It ensures controlled pouring of molten materials, provides structural support to prevent cracking, and often interfaces with lids or handling tools.

How do material choices affect rim/lip performance?

Materials like high-alumina ceramic offer excellent thermal shock resistance, while graphite provides superior chemical inertness; selection depends on the molten material's corrosiveness and temperature.

Can rim/lip designs be customized for specific applications?

Yes, designs vary by pouring rate requirements, crucible size, and handling methods—common customizations include spout shapes, reinforcement ribs, or tool engagement features.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Rim/Lip