1、 FORD LABORATORY TEST METHOD BO 160-04 Date Action Revisions Rev 03 2018 02 09 Revised Updated equipment and cutter section, added Method C M. Corley, FoE 2017 06 09 Editorial Corrected typos L. Soreide, NA 1992 01 22 Controlled document at www.MATS Copyright 2018, Ford Global Technologies, LLC Page
2、 1 of 2 RESISTANCE OF PAINTED PLASTIC PARTS TO HIGH PRESSURE CLEANING OPERATIONS Application This procedure defines the test equipment and test method for the resistance of painted plastic parts (e.g., bumper bars, mirror housings, radiator grills) against high pressure cleaning processes. Equipment
3、 Required High Pressure Cleaning Equipment: Source: Walter Cleaning Systems Neue Heimat 16 74343 Sachsenheim-Ochsenbach Germany Or equivalent instrument suitable to provide the required temperature, pressure and flow rate of water, with a fixed or moving head/sample. Jet Type & QVVA 2506 Source Spra
4、ying Systems Company See the website http:/ for the local agent. Or equivalent. Scriber/Knife Type: See FLTM BI 106-1, section “Apparatus required” Settings Method A, fixed jet: Jet position Perpendicular to specimen Water temperature, 70 C +/- 2 C Distance of nozzle to specimen 50 mm +/-3 mm Water
5、pressure, 3000 +/-50 kPa Testing time 60 seconds, +/- 3 seconds Water flow rate 420 litres/hour minimum FORD LABORATORY TEST METHOD BO 160-04 Copyright 2018, Ford Global Technologies, LLC Page 2 of 3 Method B, moving jet. Jet position Perpendicular to specimen Water Temperature 80 C +/- 4 C Distance
6、 of nozzle to specimen 100 mm +/-3 mm Water pressure, 6000 +/-50 kPa Moving range 30 mm +/- 10 mm from center, total traverse 60 mm Moving cycle 60 cycle/minute Moving direction Parallel to the X scribe on the specimen (The lines of the X scribe are Northeast to Southwest. The longer axis of the spr
7、ay fan pattern is East-West, and the direction of movement is North-South.) Testing time 120 seconds, +/-3 seconds Water flow rate 610 litres/hour minimum Method C, fixed jet, high pressure Jet position Perpendicular to specimen Water temperature, 25 C +/- 5 C Distance of nozzle to specimen 75 mm +/
8、3 mm Water pressure, 6000 +/-50 kPa Testing time 60 seconds, +/- 3 seconds Water flow rate 420 litres/hour minimum Note: The water pressure and water temperature settings must be measured immediately behind the nozzle. Conditioning and Test Conditions All test values indicated here are based on mat
9、erial conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5% relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. Procedure, Methods A & B 1. The equipment is filled with water without any additional cleaning agents an
10、d heated. 2. Before testing, the equipment must be adjusted to the required test pressure and for the specified distance. 3 Scribe the panel with an X scribe (metals, thermosets) or knife (thermoplastics) , over the whole area to be exposed to the water jet. 4. The gun with the nozzle is fixed to th
11、e required distance from the nozzle to the painted surface which is to be tested. The jet of water has to be directed vertically onto the painted surface. 5. Spray water for the specified length of time. FORD LABORATORY TEST METHOD BO 160-04 Copyright 2018, Ford Global Technologies, LLC Page 3 of 3
12、6. The surface is dried and evaluated after cooling to 23 +/- 2 C. 7. Report any failure (e.g., loss of gloss, loss of adhesion, surface deterioration). The principal failure mode is paint peeling. Chemicals, materials, parts, and equipment referenced in this document must be used and handled proper
13、ly. Each party is responsible for determining proper use and handling in its facilities. Procedure, Method C 1. The equipment is filled with water without any additional cleaning agents and maintained at 25 +/- 5 C. 2. Before testing, the equipment must be adjusted to the required test pressure for
14、the specified distance. 3 Grit Blast the panel according to FLTM BI 157-06, except with one application of 1000g shot and no water immersion step 4. The gun with the nozzle is fixed to the required distance from the nozzle to the painted surface which is to be tested. The jet of water has to be dire
15、cted vertically onto the painted surface. 5. Spray water for the specified length of time. 6. The surface is dried and evaluated after cooling to 23 +/- 2 C. 7. Report any failure (e.g., loss of gloss, loss of adhesion, surface deterioration). The principal failure mode is paint peeling/clearcoat peeling. Chemicals, materials, parts, and equipment referenced in this document must be used and handled properly. Each party is responsible for determining proper use and handling in its facilities. Summary of Revisions: 2018 02 09 Updated equipment source information Added knife Included Method C
