Skimming Arm/Blade for Molten Metal Slag Removal

Product Specifications

Technical details and manufacturing context for Skimming Arm/Blade

Definition

The skimming arm/blade is a critical component of slag skimming mechanisms in metal processing operations. It functions as the physical interface that contacts and removes slag, dross, or other impurities that accumulate on the surface of molten metal during smelting, refining, or casting processes. Typically mounted on an articulated arm system, it ensures clean metal transfer and improves final product quality. The component is designed for use in basic metal manufacturing, where it operates in high-temperature environments. Available materials include high-temperature steel alloy, refractory-coated steel, and ceramic composite, each offering different trade-offs in thermal resistance, wear resistance, and cost. Key parameters include working temperature (800–1200°C), blade length (500–2000 mm), blade width (100–300 mm), blade thickness (10–30 mm), arm length (1000–3000 mm), arm diameter (50–150 mm), material grade (310S per ASTM A240, with Inconel 600 as an alternative), surface hardness (200–300 HB), weight (50–200 kg), tolerance (±1.0 mm per ISO 2768-m), maximum skimming speed (0.5–2.0 m/s), and service life (500–2000 hours). These values are reference ranges and must be confirmed for the specific model and application. The skimming arm/blade is typically integrated into an automated or manual skimming system, and its design must match the furnace dimensions and mounting interface. When selecting or verifying a skimming arm/blade, buyers should confirm the exact material grade, dimensional specifications, and compliance with relevant standards with the legal manufacturer or supplier. Regular inspection for wear, deformation, or cracking is recommended, especially after prolonged exposure to high temperatures and abrasive slag. Replacement intervals depend on operating conditions and maintenance practices.

Working Principle

The skimming arm/blade operates by being positioned at the interface between molten metal and surface slag. Through controlled mechanical movement (often automated), it sweeps across the metal surface, physically separating and pushing away the lighter slag layer while allowing the denser molten metal to remain. This can be done through scraping, pushing, or raking motions depending on the specific mechanism design. The blade's geometry and material are selected to withstand high temperatures and abrasive wear, ensuring effective slag removal without contaminating the metal. The arm provides structural support and reach, allowing the blade to access the full furnace width. The motion is typically controlled to avoid excessive speed that could cause splashing or turbulence in the molten metal.

Common Materials

High-temperature steel alloy, Refractory-coated steel, Ceramic composite

Technical Parameters

Parameter	Typical range	Notes & selection driver
Working Temperature	800–1200 °C	For molten metal contact; above 1200°C material degradation accelerates.
Blade Length	500–2000 mm	Customizable to furnace width.
Blade Width	100–300 mm	Affects skimming efficiency.
Blade Thickness	10–30 mm	Thicker for higher wear resistance.
Arm Length	1000–3000 mm	Determines reach into furnace.
Arm Diameter	50–150 mm	Structural strength for load.
Material Grade	310S	Heat-resistant stainless steel; alternative: Inconel 600.ASTM A240
Surface Hardness	200–300 HB	Higher hardness improves wear life.
Weight	50–200 kg	Depends on size and material.
Tolerance	±1.0 mm	Ensures fit with mounting system.ISO 2768-m
Max Skimming Speed	0.5–2.0 m/s	Higher speed may cause splashing.
Service Life	500–2000 h	Depends on temperature and slag abrasiveness.

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

Components / BOM

Blade Edge Part
Primary contact surface for slag removal, designed for optimal scraping efficiency

Material: High-temperature steel alloy
Mounting Bracket Part
Connects the blade to the skimming arm mechanism

Material: Steel
Reinforcement Ribs Part
Provides structural integrity to prevent deformation under thermal stress

Material: Steel alloy
Skimming Arm
Carries the blade and gives it the reach to sweep the full furnace width.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Skimming Arm/Blade.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Slag Skimming Mechanism

View system integration details

Manufacturers of Skimming Arm/Blade

Manufacturer profiles associated with Skimming Arm/Blade.

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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 · Page last updated 6 September 2026

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

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Manufacturing capability

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Frequently Asked Questions

What materials are available for the skimming arm/blade?

According to the directory, the skimming arm/blade can be made from high-temperature steel alloy, refractory-coated steel, or ceramic composite. The material grade listed is 310S per ASTM A240, with Inconel 600 as an alternative. The choice depends on the operating temperature, slag abrasiveness, and required service life.

What are the typical dimensions of a skimming arm/blade?

Reference ranges are: blade length 500–2000 mm, blade width 100–300 mm, blade thickness 10–30 mm, arm length 1000–3000 mm, and arm diameter 50–150 mm. These are general ranges and must be confirmed for the specific furnace and application.

How long does a skimming arm/blade last?

The service life is listed as 500–2000 hours, depending on operating temperature and slag abrasiveness. Higher temperatures and more abrasive slag can reduce service life. Regular inspection and maintenance are recommended to maximize longevity.

What standards apply to the skimming arm/blade?

The material grade 310S is referenced to ASTM A240, and the tolerance is referenced to ISO 2768-m. These are procurement/verification references. Buyers should confirm compliance with the legal manufacturer or supplier for the specific model.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Atmospheric to low-pressure molten metal environments (0-2 bar)
other spec:	Slag layer thickness: 5-150 mm, Skimming speed: 0.1-2.0 m/s, Arm length: 0.5-3.0 m
temperature:	Up to 1600°C (2912°F) for standard alloys, higher with specialized materials

Skimming Arm/Blade

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards