Slurry Dispersion System for Hard Drive Polishing

Product Specifications

Technical details and manufacturing context for Slurry Dispersion System

Definition

The Slurry Dispersion System is a critical component within the Automated Computer Hard Drive Platter Polishing Machine. It is responsible for preparing, agitating, and precisely delivering a homogeneous mixture of abrasive particles (slurry) to the polishing interface. This ensures consistent material removal rates, surface finish quality, and prevents particle settling or agglomeration that could cause defects on the platter surface. The system typically consists of a reservoir, an agitation mechanism (e.g., mechanical stirrer or ultrasonic mixer), and a delivery subsystem (e.g., pumps, valves, nozzles). The slurry is continuously or periodically agitated to maintain suspension. A controlled flow is then pumped through filters and distribution lines to one or more application points (nozzles or pads) directly above or in contact with the rotating platter. The flow rate, pressure, and agitation intensity are precisely regulated. Key parameters include a flow rate of 5–20 L/min, operating pressure of 1.0–1.6 MPa, slurry concentration accuracy of ±0.5%, temperature range of 15–35 °C, power supply of 220–380 V AC (IEC 60038), motor power of 1.5–5.5 kW, mixing speed of 300–1500 rpm, particle size filtration of 1–10 µm (ISO 16889), wetted parts material of 316L stainless steel (ASTM A240), ingress protection of IP54–IP65 (IEC 60529), weight of 150–350 kg, and footprint of 800×600×1200 to 1200×800×1500 mm. These values are reference ranges and must be verified for the specific model and application. The system is used in the manufacturing of computer, electronic, and optical products, specifically in hard drive platter polishing. It is a component, not a standalone machine. For procurement, verify model-specific specifications and compliance with relevant standards with the legal manufacturer or supplier.

Working Principle

The system operates by holding slurry in a reservoir, where an agitation mechanism (mechanical stirrer or ultrasonic mixer) keeps abrasive particles suspended. A pump draws the slurry through filters to remove oversized particles, then delivers it via valves and nozzles to the polishing interface. Flow rate, pressure, and agitation intensity are controlled to maintain a consistent slurry concentration and distribution. The system is designed to prevent particle settling and agglomeration, ensuring uniform polishing of the platter surface.

Common Materials

Stainless Steel (wetted parts), Chemical-resistant polymers (seals, tubing), Ceramic (abrasive particles in slurry)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Flow Rate	5–20 L/min	Determines slurry delivery capacity
Slurry Concentration Accuracy	±0.5 %	Ensures uniform polishing
Temperature Range	15–35 °C	Outside range affects slurry viscosity
Power Supply	220–380 V AC	Three-phase or single-phaseIEC 60038
Motor Power	1.5–5.5 kW	Depends on system size
Mixing Speed	300–1500 rpm	Adjustable for slurry homogeneity
Particle Size Filtration	1–10 µm	Prevents scratches on plattersISO 16889
Material of Wetted Parts	316L	Corrosion-resistantASTM A240
Ingress Protection	IP54–IP65	Dust and water resistanceIEC 60529
Weight	150–350 kg	Affects installation logistics
Footprint (L×W×H)	800×600×1200–1200×800×1500 mm	Space requirement in cleanroom

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

Slurry Reservoir/Tank
Holds and contains the polishing slurry mixture.

Material: Stainless Steel
Agitator/Stirrer
Mechanically mixes the slurry to prevent particle settling and ensure homogeneity.

Material: Stainless Steel (shaft), PTFE (impeller)
Dispersion Pump
Creates pressure to move slurry from the reservoir through the delivery lines to the application point.

Material: Stainless Steel, Ceramic
Distribution Manifold & Nozzles
Directs and controls the flow of slurry onto specific areas of the platter surface.

Material: Stainless Steel, Sapphire (nozzle orifice)
Slurry Filter
Takes oversized particles out of the slurry before it reaches the platter.
Flow Control Valve
Sets slurry flow rate and pressure at the polishing interface.

Manufacturers of Slurry Dispersion System

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Frequently Asked Questions

What is the typical flow rate range for this slurry dispersion system?

The reference flow rate range is 5–20 L/min. This determines the slurry delivery capacity. Actual values depend on the specific model and application, so verify with the manufacturer.

What standards are referenced for operating pressure and filtration?

Operating pressure references, and particle size filtration references ISO 16889. These standards are procurement references; they do not guarantee certification. Confirm compliance with the supplier.

What materials are used for wetted parts?

Wetted parts are typically made of 316L stainless steel (ASTM A240), with chemical-resistant polymers for seals and tubing. Ceramic abrasive particles are present in the slurry. Verify material suitability for your process.

What is the ingress protection rating?

The ingress protection rating is IP54–IP65 per IEC 60529, indicating dust and water resistance. Confirm the exact rating 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:	0.5-3.0 bar (system pressure)
flow rate:	10-100 L/min (adjustable)
temperature:	15-35°C (operating range)
particle size:	0.1-5.0 μm (compatible range)
slurry concentration:	5-30% solids by weight

Slurry Dispersion System

Product Specifications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards