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LENJEX industrial ultrasonic cleaning equipment
Basket of fasteners and hardware

LENJEX Industrial Cleaning

Fasteners & Hardware Ultrasonic Cleaning

High-volume degreasing of bolts, nuts, screws, washers and fittings, removing oils, fines and light rust.

Why Ultrasonic

Ultrasonic cleaning for Fasteners & Hardware

Fasteners and hardware are produced in high volume and carry forming and cutting oils, fines, scale and light corrosion. Ultrasonic cleaning treats bulk loads evenly, while rotation or conveying ensures every part is exposed and drains freely.

The process is tied to degreasing and typically uses continuous equipment. A rotary basket cleaner or mesh-belt line handles volume, while a single tank with filtration suits smaller batches.

Throughput, oil loading, any plating pre-treatment and rust protection are reviewed before specifying the line.

Bulk fastener components
  • Even cleaning of bulk fastener loads
  • Removes forming oils and fines in volume
  • Continuous lines for high throughput
  • Prepares parts for plating or coating
  • Rust protection and drying integrated

Typical Workpieces

Parts in this application

  • Bolts, nuts and screws
  • Washers and threaded parts
  • Rivets and pins
  • Hinges and small hardware
  • Brackets and fittings
  • Stamped and cold-headed parts

Contamination

Soils to evaluate

  • Forming and heading oils
  • Cutting and tapping fluids
  • Metal fines and scale
  • Rust-prevention oil
  • Light corrosion
  • Polishing and tumbling residues
Wire mesh parts basket for fasteners

Cleanliness Target

Define clean before choosing equipment

Acceptance is based on surface cleanliness, oil checks and rust-free condition ahead of plating, packaging or assembly.

Drying and rust protection suit the ferrous or plated finish.

Recommended Sequence

A process route for evaluation

The final sequence depends on soil loading, material, rinse quality and drying behavior.

  1. Step 1Pre-clean or tumble to remove fines
  2. Step 2Ultrasonic wash with filtration
  3. Step 3Rinse stages
  4. Step 4Dry with rust protection
  5. VerifyCheck cleanliness and corrosion

Recommended Equipment

Systems to compare

The final specification follows process testing and production analysis.

Process Controls

Control the variables that change the cleaning result

Confirm the part, soil, loading and final handling before fixing equipment settings.

Control 01

Material and geometry

Record surfaces, cavities and features that can trap air or liquid.

Control 02

Soil condition

Test the heaviest representative contamination, not an ideal sample.

Control 03

Basket loading

Keep acoustic access and part spacing consistent with production.

Control 04

Rinse and drying

Match downstream handling to residue and corrosion risks.

System Selection

Match the cleaning route to production flow

Stage count and automation follow the validated process and required output.

Batch

Single-tank route

Compare for focused washing where rinsing and drying are managed separately.

Multi-stage

Wash, rinse and dry

Add controlled stages when carryover and final condition matter.

Automatic

Repeatable transfer

Evaluate automation when output, handling or recipe control requires it.

Acceptance

Define how the cleaned part will be checked

Use the same practical inspection method for trial samples and production parts.

  • Agree the surface or residue limit
  • Check hidden and difficult features
  • Record rinse, drying and handling conditions
  • Compare results before the next operation

Representative Trial

Confirm the process with real parts and loads

Trial evidence should cover normal production and the most difficult expected condition.

  1. DescribePart, material and contamination.
  2. LoadUse realistic spacing and orientation.
  3. TestRecord chemistry, time and temperature.
  4. VerifyInspect with the agreed method.
Plan a cleaning trialSend project details

Application Questions

Planning the cleaning study

Related Applications

Explore adjacent workpieces