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Professional Zinc Alloy Surface Finishing Solutions

Rack Painting — Technician Levels

Rack Painting — Technician Levels

Pick your level to see exactly which pages you should read. Each level below carries its own article library.

Rack Painting: which level are you?Four levels - the work you do on this equipment, and the pages you should read.spray booth + hanging lineJunior1-3 yearsspray booth + hanging lineIntermediate3-5 yearsspray booth + hanging lineSenior5-8 yearsspray booth + hanging lineManagementsupervisor / owner

Process route: Hang & Mask → Spray Booth → Flash-Off → Bake → Unload & QC

60-80 um
Film
140-160 C
Bake
> 93%
First pass

What each level covers

Junior · 1-3 years
Start here if you are 1-3 years in: the standard steps, the daily checks and the values you must not skip.
Inside: 5-step flow walk-through · daily check list · basic parameter values · simple do / do-not rules
Rack Painting → Junior pages
Intermediate · 3-5 years
For 3-5 years: diagnose defects, read real data (titration, hull cell, salt spray, film gauge) and set the working windows.
Inside: defect cause & cure · parameter windows · data reading · option comparisons
Rack Painting → Intermediate pages
Senior · 5-8 years
For 5-8 years: how the steps before and after this one change your result - root cause, cross-process reasoning, deep analysis.
Inside: root-cause tracing · interaction with pre-treatment / post-finish · failure analysis · boundary conditions
Rack Painting → Senior pages
Management · supervisor / owner
For the supervisor / owner: cost per piece, capacity, staffing, emergency recovery and keeping customers happy.
Inside: cost & payback models · capacity and staffing · KPI and governance · claims & recovery plans
Rack Painting → Management pages

Rack Painting on the shop floor

Rack Painting LineINTERMEDIATERack Painting - process boardOperatorWet film 60-80 um. More paint gives sags, not morecoverage.ChemistFlash-off 5-10 min at 22-25 C - trapped solvent pops inthe oven.QCCross-hatch on every colour, plus pencil hardness on thebatch.ManagerChangeovers eat the yield - schedule dark to light,never back.STEP 1Hang & MaskLoad densityMask jigClean hooks1STEP 2Spray BoothGun 20-25 cmWet film 60-80 umBooth 22-25 C2STEP 3Flash-Off5-10 minSolvent outAir flow3STEP 4Bake140-160 C15-25 minMetal 130 C4STEP 5Unload & QCFilm gaugeGloss checkAdhesion5!Fisheyes come from oil in the air line - service the filter, not the paint.COMMON MISTAKES vs WHAT WORKSfrom shop-floor auditsxHeavier coat for better coveragev60-80 um wet film; sags come from excessxSkip flash-off when the line is busyv5-10 min at 22-25 C, alwaysxChange colour from light to darkvSchedule dark to light, never back60-80 umFilm140-160 CBake> 93%First passCASE FROM THE LINECase: fisheyes traced to oil in the compressed-air line, not to the paint.QLQ Surface Treatment | steps, roles, checkpoints, mistakes and a real case

Related: Process Overview · All trades · Process Selection