Automotive Coating Line Overview

Coating line built to an audited specification — plus or minus 10 micron film control, 500 to 1,000 hours salt spray, and batch-level data logging from the first day of production. MUSI Technology builds automotive surface treatment and coating lines in Changzhou, China, and has delivered lines for automotive parts and bodies to customers including those in Vietnam, Mexico, Brazil and Turkey.

Built for chassis and structural parts, wheels, brackets and interior components supplied to Tier-1 and Tier-2 programmes.

Tier-1 and Tier-2 automotive suppliers coating chassis parts, wheels and brackets against a written OEM specification with recorded evidence rather than visual acceptance.

What the line includes: a seven-stage pretreatment tunnel with zinc phosphate or chrome-free zirconium conversion coating, a dry-off oven, a robot or reciprocator booth with quick colour change where required, a curing oven and an overhead chain or power-and-free conveyor, supplied and commissioned as one line.

How the film tolerance is held: parts sit on fixed jigs rather than free-swinging hooks, the six-axis robot or reciprocator runs with closed-loop kV and powder flow, and the target is plus or minus 10 microns on a 60-100 micron film.

What is recorded: film thickness, cure profile with part metal temperature and pretreatment bath control are logged for every batch, so the 500-1,000 hour salt spray target to ASTM B117 or ISO 9227 is backed by process records.

Throughput: 300-2,000 parts per hour at a line speed of 1.5-5.0 m/min; above 500 parts per hour a power-and-free conveyor is used in place of the overhead chain.

Industry: Automotive Parts

Video: automotive parts coating line

Coated automotive battery trays hanging on an overhead conveyor
Automotive Parts Coating Line and Surface DetailsWatch on YouTube

This 13-second video shows coated automotive battery trays hanging on an overhead conveyor, with close-ups of the coated surface. Watch it here or on the MUSI Technology YouTube channel.

VideoLengthWhat it shows
Automotive Parts Coating Line and Surface Details13 sCoated automotive components, conveyor handling and surface details.

Send your part sizes and output for a line proposal

Line Configuration

  • Seven-stage pretreatment tunnel with etch and DI rinse control
  • Dry-off oven sized so parts leave completely dry at line speed
  • Robot or reciprocator booth with quick colour change where required
  • Curing oven with part metal temperature logging on every batch
  • Fixed part jigs rather than free-swinging hooks, for film uniformity
  • Control panel specified with logging outputs from the start

MUSI engineers can run process simulations and ROI calculations based on your specifics. Contact us for a free proposal.