GALM 2017 LASER CLEANING AND SURFACE DECOATING TECHNOLOGY LASER CLEANING TECHNOLOGY

Transcription

1 LASER CLEANING AND SURFACE DECOATING TECHNOLOGY LASER CLEANING TECHNOLOGY GALM 2017 adapt laser systems Georg Heidelmann President Kansas City, MO

2 Adapt laser systems OVERVIEW The Market Leader for Laser Cleaning Founded 2003 Locations: HQ: Kansas City, MO Monterrey, MX Allentown, PA Exclusive service and support partner for cleanlaser in North America. Sales Repair Services Job shop Application Research Programs Laser Rental 50W-2D, 100W, 100W-2D, 300W-2D, 500W, 600W 140+ installed systems in US installed systems worldwide Secondary Market: Laser Fume Filter Equipment

3 The Power of Facebook Be careful what you wish for Two laser cleaning videos went viral Over 150 million views Over 1 million shares Posted by???? Nothing more saasfying than watching a laser remove rust Can add a lot of work to a small business s per day The phones never stopped ringing for weeks Lots of bad leads Many good ones Put laser cleaning on the radar for many companies

4 LASER CLEANING Over 1000 installed laser cleaning systems

5 HOW DOES IT WORK? LASER RADIATION FOR CLEANING AND ABLATION ABLATION PRINCIPLE Coating and dirt layer is removed by absorbing the focused laser spot Very powerful but short laser pulses (~<100ns) cause very little thermal influence on the base material Metallic base material reflects laser radiation, ablation process stops

6 LASER SURFACE CLEANING Two physical effects: Coating layer is vaporised (ablation by sublimation) Ablation by thermally induced pressure ABLATION PRINCIPLE Coating layer is removed by absorbing the focused laser spot Very powerful but short laser pulses cause very little thermal influence on the base material Blank base material reflects laser radiation, ablation process stops Metal can not be damaged or destroyed while using the correct laser parameter and wavelength Higher Intensity can lead to modifications on Metal if required

7 MAJOR APPLICATION OF CLEANLASER TECHNOLOGY A WIDE RANGE OF OPPORTUNITIES Precise paint removal Pre-treatment for coating and bonding Mold & tool cleaning in plastic and composite production CFRP Treatment for bonding Paint activation in production and service

8 AL-WELDING PRE-TREATMENT WITH LASER TECHNOLOGY AL- BASED BODY IN WHITE Treatment with CL600 / CL500 / CL300 Laser Removal of oxidation and dry lubes Pre-treatment for electric beam- and laser welding of Al alloys sheet metal Similar process with different parameters allows structural bonding Local area cleaning with up to 5m/min (dry lubricant removal) Constant surface quality for welding Comparable to chemical cleaning results Direct and in-line, sheet metal and extruded material Status: in production at AUDI, FIAT and JLR: OVER 60 LASER SYSTEMS

9 PUBLISHED INFPORMATION FROM JLR Effect of laser cleaning on porosity Laser cleaning was carried out using a nanosecond pulsed Nd:YAG laser (600W) with a raster scan (at 95 mm/s) to remove around 20μm thickness of surface layer. FIGURE 4 compares laser weld porosity formajon with and without laser cleaning [9]. Clearly, with all three laser welding parameters, laser cleaning has significantly reduced porosity and achieved less than 1% porosity in all cases. Industrial applicaaon The described laser cleaning/welding technology has now been pracjcally implemented for automojve producjon at Jaguar and Land Rover in the UK. The scienjfic findings provide increased confidence and understanding in introducing the laser welding technology for welding the Al alloy. LASER CLEANING: FASTER WELDING TIMES WITH BETTER QUALITY FIGURE 4. A comparison of porosity level in laser welds with and without laser cleaning [9]. Laser cleaned

10 SURFACE PREPARATION FOR POWERTRAIN Replacing bolts with welds Major weight savings Laser cleaning removes oxides and phosphate coatings prior to welding Extreme low porosity in weld area after laser cleaning Ability to weld milled and cast steel with proper laser cleaning parameters Over 50 installed cleaning lasers

11 FROM PRE TO POST-TREATMENT: COATING & BONDING ON WELD SEAMS Removal of stain and oxides Removal of silicate islands Surface activation prior to bonding and coating Removal of silicate islands prevents coating defects No reduction in corrosion resistance on zinc plated material Replacement of brushing and media blasting Works on aluminum, stainless and steel Speed up to 10m/min (CL 500)

12 PRE-TREATMENT OF LIGHT METAL FOR STRUCTURAL BONDING HYPER Passivation CLEANING & MODIFICATION Oxide removal and cleaning Single pulse leads to very short melting of the uppermost surface layer and immediate freezing of the amorphous/ micro-cristaline layer Micro roughening possible Up to 5 times better long term adhesive bonding stability AMORPHOUS SURFACE LAYER & Structured oxide layer (nm-scale) Long term shear strength of AL blue: cleanlaser grey: wet-chemical cleaning

13 Production Example HYPER Passivation Tests on low cost AL226 also low corrosion resistance ECU application Very low creep corrosion after 1200h GM salt spray test

14 Surface preparation of composites for bonding Activation of composites for bonding Replaces sanding and solvent wipe In production: 2x CL600 Mounted on robot

15 smartclean STRATEGY 1. CLEAN ONLY WHAT NEEDS TO BE CLEANED 2. CLEAN IN LINE 3. MINIMIZE CYCLE TIME 4. INVEST SMALLEST POSSIBLE LASER POWER 5. $ 1.00 per hour operating cost MINIMIZE COSTS MAXIMIZE SUSTAINABILITY COME SEE US IN THE EXHIBIT AREA