CHRYSLE

CHRYSLE - IMPROVEMENT OF THE PAINTING PROCESS IN A CAR...

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IMPROVEMENT OF THE PAINTING PROCESS IN A CAR ASSEMBLY LINE Lean Six Sigma Project Hernández, Fernando; Black Belt Rodríguez, María; Mas ter Black Belt Torres, Karen; Champion
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Location Assembly
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Define
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Business Case The problem bubbles generation in the final step of the painting process.
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Project Scope and Objective Project Scope: Assembling plant located in Venezuela. Project Objective: To reduce the number of defective cars and the losses from the painting process. Establishing a technical-economical propose to improve the painting process of an assembly car company, and having a good response in case of unexpected increasing car production. Reduce Costs by $ 50.000,00 per year. Achieve 99% of Final Test Yield (FTY).
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Painting department proces s Start point: Enter phosphate tunnel Step 1 Pre-Cleaning Step 2 Cleaning Step 3 Wash after cleaning Step 4 Wash before phos phate treatment Step 5 Phosphate Step 6 Wash after phos phate treatment Step 8 Wash after Pas sivation Step 7 Passivation Step 9 Last Wash before E-coat area A Start point: E-Coat E-coat tank Ultrafiltration tank Demineralized water tank Painted process by gums E-coat Horn End point
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ENJUAGUES CON  AGUA DESMINERALIZADA EN  PHOSPHATE E-COAT
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emineralized water needs in painting departmen
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Des mineralized proces s
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Internal proces s of PS-30 and PS-20 Enter water Ca,Mg,Fe CO3-,HCO3-,CI-, SO4-,SiO2 Chemical Regenerator HCl Cationic Res in H+ Cero anions PH between 2-3 Anion Res in OH- Chemical Regenerator NaCl- Des mineralized water Ca +2  X Mg +2 X H n R + Na + X CaR MgR + NaR 2HX Reaction that happens ins ide cationic res in H 2 SO 4 2HCl 2H 2 CO 3 2H 2 SiO 3 + A(OH) 2 ASO 4 ACl 2 A(HCO 3 ) 2 A(HSiO 3 ) 2 + 2H 2 O Reaction that happens ins ide anionic res in
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Primary: Number of defectives cars from the painting process. Secondary Metrics:
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CHRYSLE - IMPROVEMENT OF THE PAINTING PROCESS IN A CAR...

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