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技术文章

LP-463PB-64-01 蒸汽喷射试验标准


点击次数:74 发布时间:2021-04-17
参数GMW15919Ford BI 107-05LP-463PB-64-01
流量目标值2.7L/Min目标值2.7L/Min目标值2.7L/Min
样品测试位置温度98-100℃98-100℃98-100℃
油箱压力约50psi约50psi约50psi
动态压力目标值37.9Kpa(5.5Psi) 目标值37.9Kpa(5.5Psi) 目标值37.9Kpa(5.5Psi)
喷嘴和样品距离50-75mm50-75mm50-75mm
喷嘴和样品角度45°45°45°
喷嘴直径12.25 to 12.75mm12.25 to 12.75mm12.25 to 12.75mm
喷嘴长度>100mm>100mm>100mm



THERMAL SHOCK PROCEDURE FOR ORGANIC COATING ADHESION TEST
涂层系统附着力测试的热冲击程序
 
1.0 GENERAL
Test procedure is designed to evaluate the adhesion of organic coatings.
测试程序旨在评估有机涂层的附着力。
1.1 Purpose
The purpose of this procedure is to determine the resistance to degradation and/or adhesion loss over steel, aluminum, plastic or other substrates coated with organic finishes while subjected to thermal changes and high pressure spray conditions. These conditions are similar to those generated by the heated pressure wash equipment found in manual car wash operations. Evaluation is based on a pass/fail analysis.
本程序的目的是确定在热变化和高压喷涂条件下,钢、铝、塑料或其他涂有有机涂层的基材的抗降解性和/或附着力损失性。这些情况与手动洗车操作中加热压力清洗设备产生的情况相似。评估基于通过/失败分析。
1.2 Coverage of this Standard
This test procedure may be used to evaluate organic finishes over metal or plastic substrates with
appropriate surface preparation (plating, chemical surface treatment, etc). This test procedure can be used for interior, exterior, and underhood/underbody applications.
本试验程序可用于评估金属或塑料基底上的有机饰面,包括 适当的表面处理(电镀、化学表面处理等)。本测试程序可用于车内、车外和发动机罩下/车身底部应用。
 
2.0 SPECIAL TEST EQUIPMENT & MATERIALS
试验设备和材料
 

TABLE 1: SPECIAL TEST EQUIPMENT
Name Of Item Description Make/Model
Scribe Tool
 
Straight shank tungsten carbide
tipped scribe device with a tip angle
of 60 15 degrees or equivalent.
N.A.
 
Razor knife Common utility knife or X-acto knife N.A.
Water Bath
 
Capable of maintaining 38 +/- 2° C
with aeration
N.A.
 
FreezerCapable of maintaining -29 +/- 2° C NN.A.
Steam Generator
蒸汽发生器
Discharge Nozzle: 12.5 mm ID (100
mm minimum length)
Dynamic Head Pressure: 37.9 +/- 2
kPa (5.5 psi) +/- 5% deviation
Model 100 Steam
Generator from Atomic Steam
Co., 10727 Fendell, Detroit, MI
48238 or equivalent.

 
 
 
 
3.0 SUMMARY OF METHOD
This procedure will evaluate organic coating adhesion after exposure to elevated and reduced
temperatures using high pressure steam impingement.
本程序将评估有机涂层暴露于高温和低温环境后的附着力使用高压蒸汽冲击的温度。
4.0 SAFETY PRECAUTIONS
This test procedure involves high and low temperature conditions, steam, and high pressure spray.
Pressurized steam represents a potential burn hazard. Parts must be secured properly to the test fixture and laboratory technicians should wear full face shields and heat resistant gloves. If possible, the testing should be conducted in a test chamber equipped with a full closing front shield with safety interlock to prevent triggering steam with the shield open. This standard does not address all the safety problems associated with its use. It is the responsibility of whomever uses this standard to consult and establish appropriate safety and health practices to determine the applicability of regulatory limitations prior to use.
本试验程序涉及高温和低温条件、蒸汽和高压喷雾。加压蒸汽有潜在的烧伤危险。零件必须正确地固定在试验夹具上,实验室技术人员应佩戴全面罩和耐热手套。如有可能,应在配有全封闭前护罩(带安全联锁装置)的试验箱中进行试验,以防止护罩打开时触发蒸汽。本标准并未解决与其使用相关的所有安全问题。使用本标准的任何人都有责任在使用前咨询并建立适当的安全和健康实践,以确定监管限制的适用性。
 
5.0 CONDITIONING
Condition fully cured parts or panels for a minimum of 72 hours at 23 +/- 2°C and 50 +/- 10% relative humidity prior to beginning test procedure.
在开始试验程序之前,在23+/-2°C50+/-10%相对湿度条件下对完全固化的零件或面板进行至少72小时的处理。
 
6.0 PROCEDURE
A. Immerse test specimen in an aerated water bath at 38 2°C for 4 hours. Water should contain max 5 ppm dissolved solids as sodium chloride (NaCl).
将试样浸入38 2°C的充气水浴中4小时。水应含有最多5 ppm的溶解固体,如氯化钠(NaCl)。
 
B. Immediately after removal from water bath, scribe parts or panels through to the substrate as shown in Figure 1.
从水浴槽中取出后,立即将零件或面板划入基板,如所示
 

  1. Hard substrates such as metal or rigid plastic should use a carbide tipped scribe tool.金属或硬塑料等硬基片应使用硬质合金尖划线工具
  2. Elastomeric substrates should be scribed with a razor knife. 应使用剃须刀划出弹性基底。
  1. Place parts or panels into freezer held at -29±2°C for a period of minimum 3 hours. 将零件或面板放置在-29 ±2°C的冰箱中至少3小时。
  1. Verify that steam generation equipment is functioning at a flow rate or 2.7 L/minute and dynamic head pressure of 37.9 kPa (5.5 psi) as detailed in the equipment section of this document. See Appendix A showing a suitable device for measuring dynamic head pressure. 验证蒸汽发生设备在流量或2.7 L/min和动态压头压力为37.9 kPa5.5 psi)的情况下运行,如本文件设备部分所述。见附录A,其中显示了测量动态压头压力的合适装置。
     
    E. Adjust test part or panel holding fixture and nozzle to provide the necessary 45° angle of impingement and the 50-75 mm nozzle to part distance required for testing.
    NOTE: Steam impingement force requires that the part or panel be held tightly to prevent shifting during the test. Adjustable clamps are used to provide both necessary holding strength and part
    adjustability.
    调整试验零件或面板固定夹具和喷嘴,以提供必要的45°冲击角和50-75 mm喷嘴到试验所需零件的距离。
    注:蒸汽冲击力要求紧紧握住零件或面板,以防止在试验过程中移动。可调夹具用于提供必要的夹持强度和零件可调性。
     
     
    F. Remove part or panel from freezer and immediately mount in the holding fixture ensuring that the nozzle is directed at the center of the “X” scribe. See Appendix B.
    从冷冻柜中取出零件或面板,并立即安装在夹具中,确保喷嘴指向“X”划线的中心。见附录B
    G. Begin 30 second steam impingement within 30 seconds of removal from the freezer.
    NOTE: Pressurized steam represents a potential burn hazard. Parts must be secured properly to the test fixture and laboratory technicians should wear full face shields and heat resistant gloves. If possible, the testing should be conducted in a test chamber equipped with a full closing front
    shield with a safety interlock to prevent triggering steam with the shield open.
    从冷冻柜中取出后30秒内开始30秒的蒸汽冲击。
    注:加压蒸汽代表潜在的烧伤危险。零件必须正确地固定在试验夹具上,实验室技术人员应佩戴全面罩和耐热手套。如有可能,应在配有全封闭前护罩的试验箱中进行试验,前护罩配有安全联锁装置,以防止护罩打开时触发蒸汽。
     
  1. After 30 second test is complete, evaluate the test part for change in appearance or adhesion loss. 30秒试验完成后,评估试验零件的外观变化或附着力损失。
     
    7.0 REPORT
    Record any changes in visual appearance such as cracking, whitening, blushing or discoloration, or loss of gloss.
    If adhesion loss occurs, record the area of removal in cm2. Adhesion loss of < 0.5 cm2 is acceptable.
    记录视觉外观的任何变化,如开裂、变白、发红或变色或失去光泽。如果发生粘着损失,记录去除面积(单位:cm2)。附着力损失<0.5 cm2是可以接受的。
    8.0 DEFINITIONS/ABBREVIATIONS/ACRONYMS
    cm: centimeters
    kPa: kiloPascal
    L: liters
    mm: millimeters
    psi: pounds per square inch
     
    9.0 GENERAL INFORMATION
    Three asterisks “***” after the section/paragraph header denotes single or multiple technical changes to the section/paragraph. Specific technical changes within a section, subsection, table, or figure may be highlighted in yellow.
    Certain important information relative to this Laboratory Procedure has been included in separate
    standards. To assure the materials submitted meet all of Chrysler requirements, it is mandatory that the requirements in the following standards be met.
    CS-9800 - Application of this procedure, the subscription service, and approved sources
    CS-9003 - Regulated substances and recyclability
    For specific information on this document, please refer to the contact person shown in the "Publication Information" Section of this document. For general information on obtaining Engineering Standards and Laboratory Procedures, see CS-9800 or contact the Engineering Standards Department at LP-463PB-64-01, Change -, 2011-05-09, Page 3
     
 
 
 
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