VCS 1029,54719水冲击实验标准 - 图文 下载本文

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Volvo Car Corporation 沃尔沃汽车公司

Standard 标准

VCS 1029,54719

Page 1(9) 第1(9)页

Dept / Issued by Magnus Karlsson Issue 2 Established 2006-04 UM 部门/发行人:Magnus Karlsson第2版,2006-04 UM制定

The English language version is the original and the reference in case of dispute.

TEST METHOD

英文版本为原件,出现争议时应予以参考。 测试方法

Adhesion, water spraying under 粘附性,高压喷水 high-pressure

Paints and enamels

涂料和搪瓷

Orientation

简介

This issue differs from issue 1 in that an alternative 本版本与第1版的区别在于包含了划线的替代方for when scribing shall be made has been 法。 included.

此外,已经规定了喷嘴的制造程序,已经更改了校

Furthermore, the manufacture of the spray nozzle

准的材料。已经澄清了暴露于潮湿环境后的处理程

has been specified, and the material for calibration

has been changed. Handling after moisture 序。 exposure has been clarified.

1 Scope and field of application

1 应用范围和领域

This test method is used for assessing the 本测试方法用于评估漆膜之间以及漆膜和基材之间adhesion between paint films and between paint 的粘附性。本方法预计用于模拟漆膜在高压清洗条film and substrate respectively. The method is 件下可能受到的应变和负载。 intended to simulate the strain and load that the paint films are subjected to during high-pressure cleaning.

2 Apparatus and test object

?

2 装置和测试对象

高压型测试设备,NIFAB牌、HTT-1型,或者其他等效测试设备

最低150巴 0-150mm 每秒清扫一次 50 ± 5℃

No 2506(扁平射流25°),由Spraying

Test equipment of high-pressure type, brand ? NIFAB, model HTT-1, or equivalent test equipment

min. 150 bar 0-150 mm 1 sweep/s 50 ± 5 °C

No 2506 (flat jet 25°)

Water pressure: Spraying distance: Sweeping frequency: Water temperature: Spray nozzle:

水压: 喷射距离: 清扫频率: 水温: 喷嘴:

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VOLVO

Volvo Car Corporation 沃尔沃汽车公司

Standard 标准

VCS 1029,54719 Issue 2 第2版

Page 2(9) 第2(9)页

Lance length:

Spraying Systems Co.

300 ± 50 mm

喷杆长度:

带有中心孔的试样固定

器,孔径为: -

测试对象

Systems Co.生产

300 ± 50 mm ??40 mm

Test piece holder ??40 mm

withcentre hole, size of hole: ?

Test object

a) Test panel 100 x 200 mm of the substrate in a) 测试面板,100 x 200 mm(相关基材);表

question, surface coated with the relevant 面涂有相关的涂料系统。至少测试两块面板。paint system. A minimum of two panels shall 至少测试分布于两块面板之间的三道十字标be tested. A minimum of three crosses

记。

distributed between the two panels shall be tested. b) Test part of the relevant substrate, surface b) 测试零件(相关基材),表面涂有相关的涂料

coated with the relevant paint system. In 系统。为了获得显著性结果,至少应从两个测order to have significant results, test pieces 试零件上的不同区域采集试样。每个零件至少should be taken from different areas on at

测试四个十字标记。

least two test parts. A minimum of four crosses shall be tested for each part.

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VOLVO

Volvo Car Corporation 沃尔沃汽车公司

Standard 标准

VCS 1029,54719 Issue 2 第2版

Page 3(9) 第3(9)页

?

Scribing tool, edge width 0,5 mm and - geometry according to VCS 1021,29.

划线工具,边缘宽度0.5mm,几何结构依据VCS 1021,29。

3 Preparation for test

The test panels shall be conditioned in accordance with VCS 1021,19. Before testing the adhesion, an initial paint damage shall be made on the test object by scribing two 0,5 mm lines using a scribing tool. The scribed lines shall be made down to the substrate, at right angles to each other to create a cross, see fig. 1. The scribed lines shall extend outside the test area.

3 测试准备

应按照VCS 1021,19的要求对测试面板进行调节。测试粘附性前,应使用划线工具在测试对象上划两根0.5mm的线,作为初始涂料损坏。划线应向下划至基材,并相互垂直以生成一个十字图案,参见图1。划线应延伸至测试区域外。

Each scribed line shall be approx 60 mm. A cross

每条划线应约为60mm。划线的横截面如图2所section of a scribed line is shown in fig. 2.

示。

IMPORTANT – The edges of the scribed lines

重要信息——划线的边缘必须与基材垂直。 must be at right angles to the substrate.

5 % flaking / flagning

5%的剥落

60 % flaking / flagning

60%的剥落

划线

B1

Fig. 1 Principle layout / Principskiss

图1:原理布局

B2

划线

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VOLVO

Volvo Car Corporation 沃尔沃汽车公司

Standard 标准

VCS 1029,54719 Issue 2 第2版

Page 4(9) 第4(9)页

漆层

基材

Fig. 2Cross section of sample with scribed line / Tv?rsnitt av prov med rits

图2:带划线的样品的横截面

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Volvo Car Corporation 沃尔沃汽车公司

Standard 标准

VCS 1029,54719 Issue 2 第2版

Page 5(9) 第5(9)页

As the adhesion test is to be made after moistureexposure (wet adhesion), the test object shall first beexposed in a tropical cabinet in accordance withVCS 1027,33759 for the period specified in therequirement specification.

For metal substrates, the testing shall be performedimmediately after exposure, without any recovery. Inpractice, this means that the panels can be storedmaximum 60 min in a vessel filled with water of roomtemperature to keep them humid until testing. Theshortest possible time shall be aimed for.

As far as plastics substrates are concerned, they shall be stored for 1 h in a constant-temperature controlled cabinet at standard atmosphere (23 ± 2 °C, 50 ± 5 % RH) instead of storage in a water-filled vessel. This shall be done to allow the material to recover. The testing shall then take place within approx. 15 min.

The scribing shall be made prior to the moistureexposure. For metal with paint or other organicsurface coating, scribing can alternatively be madeafter moisture exposure. In the latter case, anagreement shall be made between test requester andtest responsible. The report shall state when thescribing was made.

由于粘附性试验需在暴露于潮湿环境中之后进行(湿粘附性),测试对象应首先按照VCS 1027,33759的要求暴露于热带机柜中,暴露时间参照要求规格说明中的规定。

对于金属基材,应在暴露之后立即进行测试(无任何恢复)。在实践中,这就意味着面板可在室温条件下储存在充满水的容器中最长60min,以便保持其在测试前的潮湿状态。时间尽可能最短。

如果涉及塑料基材,应在标准大气环境中(23±2℃,50±5%RH)将其储存在恒温控制机柜中1h,而不是充满水的容器。这样做的目的是让材料恢复。然后应在约15min内进行测试。

应在暴露于潮湿环境中之前进行划线。对于带有油漆或其他有机表面涂层的金属,也可以在暴露于潮湿环境中之后进行划线。对于后者,测试请求人和测试负责人应达成协议。报告中应说明进行划线的时间。

4 Test procedure

Place the test object in the test piece holder. Then fixthe test piece holder’s hole (? 40 mm) centrally abovethe initial damage. It is important that the scribedcross is correctly positioned in front of the jet, see fig.3. The following parameters apply; the nominal valuesare target values: ?

4 测试程序

将测试对象放在试样固定器上。然后将试样固定器的孔(?40 mm)固定在初始损坏中心上方。将划出的十字标记正确地放置在喷嘴的前方非常重要,参见图3。下列参数适用;标称值即为目标值:

The water jet shall sweep over the test ? surface(± 20 mm) with an angle of deflection of 5,6° fromthe nozzle tube’s centre of rotation(N.B. – No parallel displacement) Distance between nozzle and test surface ? (90°):100 ± 3 mm Water pressure: 120 ± 3 bar Water flow: 15,0 ± 0,3 l/min

? ?

喷水器应以5.6°的偏向角从喷嘴管的旋转中

心扫过测试表面(±20mm)(注意:无平行位移)

喷嘴和测试表面之间的距离(90°):100 ± 3 mm

水压:120 ± 3 bar 水流量:15.0± 0.3 l/min

? ? ?

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VOLVO

Volvo Car Corporation 沃尔沃汽车公司

Standard 标准

VCS 1029,54719 Issue 2 第2版

Page 6(9) 第6(9)页

? ? ?

Water temperature: 50 ± 5 °C Number of sweeps during 30 s: 30 ± 2

? ?

水温:50 ± 5℃

30秒内的清扫次数:30 ± 2

清扫宽度:± 20 mm(试样固定器的中心孔的

直径)

如果测试面板的温度在不同喷水过程中发生变化,则有时会对结果产生影响。因此,在喷水前面板应为室温(18-28℃)。该项要求适用于所有十字标记。

Sweeping width: ± 20 mm (diameter of the ? testpiece holder’s centre hole)

If the test panel temperature varies between ? thedifferent sprayings, the result can sometimes beinfluenced. Before spraying, the panel shall thereforebe of room temperature 18 - 28 °C. This applies toeach cross.

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Volvo Car Corporation 沃尔沃汽车公司

Standard 标准

VCS 1029,54719 Issue 2 第2版

Page 7(9) 第7(9)页

5 Assessment

After completed test, the object shall be wiped dry and the extension of the paint damage shall be established. The test result shall be given in per cent flaked paint surface. 100 % is defined as the circular area (0 40 mm) centred on the scribed cross, see fig. 1, (1256 mm2) minus the scribed line area of 40 mm2.

5 评估

完成测试后,将测试对象擦干并确定油漆损坏的延伸。测试结果应以剥落的油漆表面的百分比给出。100%定义为以划出的十字标记为中心的圆面积(Φ40mm),参见图1(1256mm2),减去划线的面积(40mm2)。

The requirement shall be met for each scribed 每个划出的十字标记均应满足要求。不应计算整个cross. Mean values for the entire part/panel shall 零件/面板的平均值。 NOT be calculated.

6 Report

The test report shall include the following: a) Type and designation of test material

6 报告

测试报告应包含以下内容: a) 测试材料的类型和名称

b) Test result in per cent (for each test b) (每个测试对象对应的)测试结果,百分比。

objectrespectively). Ranges can be given if 根据要求规格说明,如果批准了结果,则可以the result is approved according to the 给出范围。应记录被拒绝的样品的数量。 requirement specification. The number of rejected samples shall be noted. c) Testing in accordance with VCS 1029,54719

c) 按照VCS 1029,54719的要求执行的测试

d) If scribing was performed before or after d) 划线在暴露于潮湿环境中之前还是之后执行

moisture exposure, if any (如有)。

7 Calibration

7 校准

Unless otherwise specified, calibration and 除非另有规定,否则应以90天的时间间隔执行喷嘴inspection of the nozzle’s spray pattern shall be 的喷射形式的校准和检查。 made with an interval of 90 days.

Calibration is performed by subjecting a test panel (approx. 100 x 200 mm) of low-density polyethylene as per STD 1211,05or equivalent material to high- pressure cleaning for 30 s without the use of a test piece holder. The nozzle must not oscillate. The following parameters apply: ? ?

Angle between nozzle and test surface: 90°

校准的执行方法为:对低密度聚乙烯测试面板(约

100 x 200 mm)(按照STD 1211,05)或者其他等效材料执行高压清洗30s,不使用试样固定器。喷嘴不得振动。下列参数适用:

? 喷嘴和测试表面之间的夹角:90°

喷嘴和测试表面之间的距离:100 mm ± 3 mm

Distance between nozzle and test panel: 100 ?

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VOLVO

Volvo Car Corporation 沃尔沃汽车公司

Standard 标准

VCS 1029,54719 Issue 2 第2版

Page 8(9) 第8(9)页

mm ± 3 mm ? ? ?

Water pressure: 120 bar ± 3 bar Water flow: 15,0 ± 0,3 l/min Water temperature: 50 ± 5 °C

? ? ?

水压:120 bar ± 3 bar 水流量:15.0 ± 0.3 l/min 水温:50 ± 5℃

The nozzle’s spray pattern is determined by 通过测量测试面板上因喷水造成的损坏的长度和宽measuring the length and width of the damage on 度,以及检查其外观等方式确定喷嘴的喷射形式。 the test panel caused by the spraying as well as checking its appearance.

To be approved, the spray pattern shall be 待批准:喷射形式应连续,长度为63.0 ± 5 mm、continuous, have a length of 63,0 ± 5 mm and a 宽度为3.0mm,并且其应处于两条间隔为7.0mmwidth of min 3,0 mm, and it shall be contained 的平行线之间(参见图4)。 between two parallel lines, 7,0 mm apart (see fig. 4).

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Volvo Car Corporation 沃尔沃汽车公司

Standard 标准

VCS 1029,54719 Issue 2 第2版

Page 9(9) 第9(9)页

Fig. 3The cross mark shows schematically the position of the scribed lines cross damage in relation to

the vertical flat jet.

图3:十字标记以图示的形式显示了与垂直的扁平射流有关的划线十字损坏的位置。

7mm Fig. 4 Damage from spray 图4:喷射造成的损坏

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