Editorial Technical Reference

Scraper/Plow Assembly

This page explains how Scraper/Plow Assembly is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A mechanical assembly designed to scrape or plow material across a rotating grate or discharge table surface.

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Product Specifications

Technical details and manufacturing context for Scraper/Plow Assembly

Definition
The Scraper/Plow Assembly is a critical component of Rotating Grate/Discharge Table systems, responsible for the controlled removal, leveling, or redirection of processed material (such as ash, clinker, or bulk solids) from the rotating surface. It ensures consistent discharge rates, prevents material buildup, and maintains operational efficiency. This assembly is typically mounted at a fixed position relative to the rotating table, using one or more blades (scrapers or plows) that contact the material bed. As the grate or table rotates, the stationary blades shear, push, or guide the material toward a discharge chute or conveyor. The angle, depth, and shape of the blades determine the scraping/plowing action. The assembly is available in configurations with abrasion-resistant steel or hardened alloy steel blades, with a rated capacity of 5–20 t/h, scraper width of 300–1200 mm, and scraper height of 50–200 mm. Operating pressure ranges from 1.0 to 1.6 MPa, and operating temperature from -20 to 80°C. Blade hardness is 45–55 HRC (ASTM E18), surface roughness is Ra 1.6–3.2 µm (ISO 1302), and weight ranges from 50 to 250 kg. The IP rating is IP54–IP65 (IEC 60529), and the mounting bolt pattern has a center distance of 100–200 mm. These values are reference ranges for standard models and must be verified for specific applications. The assembly is designed for use in machinery and equipment manufacturing, particularly in systems handling abrasive materials. Proper selection requires consideration of material characteristics, table dimensions, and discharge requirements. Verification of model-specific parameters and compliance with relevant standards should be confirmed with the legal manufacturer or supplier.
Working Principle
The assembly is mounted at a fixed position relative to the rotating table. One or more blades make contact with the material bed. As the table rotates, the stationary blades shear, push, or guide the material toward a discharge chute or conveyor. The angle, depth, and shape of the blades determine the scraping/plowing action. Adjustable scraper height (50–200 mm) allows control of material layer thickness. Blade hardness (45–55 HRC) and surface roughness (Ra 1.6–3.2 µm) influence wear resistance and material sticking. The assembly operates within specified pressure and temperature limits.
Common Materials
Abrasion-resistant steel, Hardened alloy steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Capacity5–20 t/hMaterial throughput range for standard models
Scraper Width300–1200 mmMatches discharge table width
Scraper Height50–200 mmAdjustable for material layer thickness
Operating Pressure1.0–1.6 MPaBelow 1.0 MPa seat load insufficientISO 5208
Operating Temperature-20–80 °CSeals degrade above 80°C
Blade Hardness45–55 HRCHigher hardness for abrasive materialsASTM E18
Surface RoughnessRa 1.6–3.2 µmSmoother finish reduces material stickingISO 1302
Weight50–250 kgDepends on size and material
IP RatingIP54–IP65IP65 for dusty environmentsIEC 60529
Mounting Bolt Pattern100–200 mmCenter distance between mounting holes

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

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Scraper/Plow Assembly.

Applied To / Applications

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

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 10 bar (static), 2 bar (dynamic)
flow rate: Up to 500 m³/h
temperature: -20°C to 150°C
slurry concentration: Up to 60% solids by weight
Media Compatibility
✓ Coal/ash slurry ✓ Mineral ore concentrate ✓ Municipal wastewater sludge
Unsuitable: Highly abrasive silica sand with >90% quartz content
Sizing Data Required
  • Grate/table diameter (mm)
  • Material bulk density (kg/m³)
  • Required scraping capacity (tons/hour)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Abrasive wear on cutting edges
Cause: Continuous contact with abrasive materials (soil, rocks, debris) leading to material loss and dulling of edges
Structural fatigue cracking at weld joints
Cause: Cyclic loading from impact forces and vibration during operation, exacerbated by poor weld quality or design stress concentrations
Maintenance Indicators
  • Visible deformation or bending of the scraper blade beyond design tolerance
  • Unusual grinding or scraping noises during operation indicating excessive wear or misalignment
Engineering Tips
  • Implement regular edge inspection and hardfacing/replacement schedule based on material abrasiveness and operating hours
  • Use vibration analysis to detect early structural issues and perform periodic non-destructive testing (NDT) on critical weld joints

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ANSI B5.54-2005 - Machine Tools - Test Conditions for Horizontal Milling Machines DIN 8580:2003-09 - Manufacturing Processes - Terms and Definitions

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: +/-0.02mm
  • Flatness of mounting surface: 0.1mm
Quality Inspection
  • Dye Penetrant Test for surface cracks
  • Spectrographic Analysis for material composition

Manufacturers of Scraper/Plow Assembly

Manufacturer profiles associated with Scraper/Plow Assembly.

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Frequently Asked Questions

What is the primary function of a Scraper/Plow Assembly?

It is designed to scrape or plow material across a rotating grate or discharge table surface, ensuring controlled removal, leveling, or redirection of processed material such as ash, clinker, or bulk solids. This prevents material buildup and maintains consistent discharge rates.

What materials are commonly used for the blades?

According to the directory, the blades are available in abrasion-resistant steel or hardened alloy steel. The specific grade should be confirmed with the manufacturer based on the application's abrasiveness.

What are the typical operating parameters?

Reference ranges include a rated capacity of 5–20 t/h, scraper width of 300–1200 mm, scraper height of 50–200 mm, operating pressure of 1.0–1.6 MPa, and operating temperature of -20 to 80°C. These are standard model values and must be verified for specific installations.

How should I verify the suitability of this assembly for my system?

You should confirm model-specific parameters such as capacity, dimensions, and material compatibility with the legal manufacturer or supplier. Also verify compliance with relevant standards like ASTM E18, ISO 1302, and IEC 60529 as applicable.

Data Basis

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

Preliminary Technical Classification
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