腾达试验仪器厂：

　　漆膜自动划痕仪根据GB9279《色漆和清漆划痕试验》和ISO 12137-2《色漆和清漆耐划伤性的测定》中有关规定而精心设计制造的。本测试仪是用来测定色漆和清漆的单一涂层或复合涂层体系或水性木漆在标准条件下的耐划透和耐划伤性。本仪器采用大速比大输出扭矩齿轮减速箱，以保证在不同测试负载下划针移动速度恒定，使测试结果具有较高的精度。本仪器目前可以做的是两种底材的试验。一种是测试色漆和清漆水性木漆的涂层耐划透性，底材是金属，漆膜是否被划透可以通过仪器上的电压表的指示而直观的得到结果，另一种是测试水性木漆的耐划伤性，底材是木材，漆膜是否被划伤是通过肉眼或放大镜的观察得出结果的。

　　The automatic film scratch tester is carefully designed and manufactured according to the relevant provisions in GB9279"Scratch Tests for Paints and Varnishes"and ISO 12137-2"Determination of Scratch Resistance of Paints and Varnishes.This tester is used to determine the resistance to scratching and scratching of single or composite coating systems or waterborne wood lacquers under standard conditions.This instrument uses a large speed ratio and large output torque gear reducer to ensure that the stroke speed is constant under different test loads,so that the test results have higher accuracy.What this instrument can currently do is test two kinds of substrates.One is to test the scratch resistance of coatings of water-based wood lacquers of colored paint and varnish.The substrate is metal.Whether the paint film is scratched can be directly obtained by the indication of the voltmeter on the instrument.The scratch resistance of water-based wood paint.The substrate is wood.Whether the paint film is scratched is obtained by observation with the naked eye or a magnifying glass.

　　漆膜自动划痕仪技术参数：

　　★电机功率：60W

　　★划针移动速度：3cm/s

　　★划针头部半径：0.5mm

　　★测试负载：50g～2000g

　　★电源电压：220V AC 50Hz

　　★外形尺寸：380×300×180mm（长×宽×高）

　　★重量：25kg

　　Technical parameters of automatic film scratch tester:

　　★Motor power:60W

　　★Stroke speed:3cm/s

　　★Stylus head radius:0.5mm

　　★Test load:50g～2000g

　　★Power supply voltage:220V AC 50Hz

　　★Dimensions:380×300×180mm(length×width×height)

　　★Weight:25kg

　　漆膜自动划痕仪操作规程：

　　1、试验前准备工作：

　　★试板的准备：

　　a.材料和尺寸：除另有规定或商定外，试板底材的尺寸应为150×70mm的长方形，并满足GB9271规定的马口铁板，薄钢板和硬铝板。如果待测试样品要求刷涂，则所用底材的尺寸应略大些，刷纹应平行于板的短边，干燥后并能在试板短边一向切割出150×70mm的试板。水性木漆的底材则是木材。

　　b.试板的处理和施涂：除另有规定或商定外，应按GB9271进行，然后按规定方法施涂待测试样品。

　　c.试板的干燥：除另有规定外，试板应按受试产品的规定进行干燥。然后试板应在温度（23±2）℃、相对湿度（50±5）%的条件下，至少干燥16小时后在进行试验。

　　★环境温度：除另有规定外，试验应在（23±2）℃和（50±5）%相对湿度下进行。

　　Operation rules of automatic film scratch tester:

　　1.Preparations before the test:

　　★Preparation of test plate:

　　a.Material and size:Unless otherwise specified or agreed,the size of the test plate substrate shall be a rectangle of 150×70mm and meet the requirements of GB9271 for tinplate,thin steel plate and rigid aluminum plate.If the sample to be tested requires brush coating,the size of the substrate used should be slightly larger,and the brush pattern should be parallel to the short side of the board.After drying,a 150×70 mm test board can be cut on the short side of the test board.The substrate of water-based wood paint is wood.

　　b.Treatment and application of the test plate:Unless otherwise specified or agreed,the test shall be performed in accordance with GB9271,and then the sample to be tested shall be applied in accordance with the prescribed method.

　　c.Drying of the test plate:Unless otherwise specified,the test plate shall be dried in accordance with the test product.The test panel shall then be tested at a temperature of(23±2)°C and a relative humidity(50±5)%for at least 16 hours.

　　★Ambient temperature:Unless otherwise specified,the test should be carried out at(23±2)℃and(50±5)%relative humidity.

　　漆膜自动划痕仪操作方法：

　　★将本仪器放在稳固、平坦的试验台上，操作者正对仪器。

　　★取下划针，用放大镜观察划针的针头应是光滑的半球状，无明显的磨伤且无污物的，否则应更换新的划针。划针与导向柱安装高度可以根据试板的厚度来调整。

　　★旋开左端试样夹具上的紧定螺栓，放入固定板下，试板的涂层向上，然后旋紧紧定螺栓。

　　★将电源插头插入位于墙壁上的电源插座，并打开电源开关。

　　★下面的操作需要对两块试板各做三次试验：

　　a.固定负荷的通过/不通过试验：在砝码支架上放上所需要的砝码。按下仪器上的“划痕”按扭。如果电压表在划痕的过程中有指示，则证明漆膜被划透。

　　b.测定划透涂层的A小负荷试验：先开始用较小负荷，然后逐渐以适当增量逐渐增加负荷直到涂层被划透为止。在该试板的未划部分和另一块新试板上用该负荷重复试验，所得结果相符之后，记下A小负荷值。

　　★旋动仪器右边的抬针螺栓，取下试板观察。

　　★按下“复位”按钮，则划针回到原位，即可开始下一次划痕。

　　Operation method of automatic film scratch tester:

　　★Place the instrument on a stable,flat test bench with the operator facing the instrument.

　　★Remove the stylus,observe with a magnifying glass that the needle of the stylus should be smooth and hemispherical,without obvious abrasion and dirt,otherwise you should replace it with a new one.The height of the stylus and guide post can be adjusted according to the thickness of the test plate.

　　★Unscrew the set screw on the left end sample holder,put it under the fixing plate,the coating of the test plate is upward,and then tighten the set screw.

　　★Plug the power plug into a power outlet located on the wall,and turn on the power switch.

　　★The following operations require three tests on each of the two test plates:

　　a.Pass/fail test for a fixed load:Place the required weight on the weight support.Press the"Scratch"button on the instrument.If the voltmeter has an indication during the scratching process,the paint film is proven to be scratched.

　　b.A small load test to determine the penetrating coating:start with a small load,and then gradually increase the load in appropriate increments until the coating is scratched.Repeat the test with the load on the unmarked part of the test plate and another new test plate.After the results obtained are consistent,record the small A value.

　　★Turn the needle lifting bolt on the right side of the instrument and remove the test plate for observation.

　　★Press the"Reset"button to return the stylus to the original position and start the next scratch.

　　漆膜自动划痕仪主要结构：

　　利用一恒速马达，通过齿轮齿条传动带动划针滑动，划针垂直于漆膜。划针顶端是一直径为1mm的硬质钢的半球形针头。上方有支架，支架上可以根据需要放置50g到2000g的砝码。支架的后部有一用来平衡支架自动的平衡块。砝码支架的转轴采用滚珠轴承支承，转动灵活，减小了磨擦力矩，从而使施加在金刚石划针尖端的压力具有良好的重复性，也即保证了测试结果具有良好的重复性。仪器上设有用来夹紧试板的夹紧机构。支架的后部设有在划针复位的时候用来抬起划针的抬针螺栓。机器的面板上有一电压表，当样板上的漆膜被划针划透时，电压表即有指示，这样可以确定的判断漆膜是否被划透，消除了人为误差。

　　The main structure of automatic film scratch tester:

　　A constant speed motor is used to drive the stylus to slide through a rack and pinion drive.The stylus is perpendicular to the paint film.The tip of the scribe needle is a hemispherical needle of hard steel with a diameter of 1mm.There is a bracket on the top,and a weight of 50g to 2000g can be placed on the bracket as needed.There is a balance weight on the rear of the stand to balance the stand automatically.The rotating shaft of the weight bracket is supported by ball bearings,which rotates flexibly and reduces the frictional moment,so that the pressure applied to the tip of the diamond stylus has good repeatability,that is,the test result has good repeatability.The instrument is provided with a clamping mechanism for clamping the test plate.The rear part of the bracket is provided with a needle lifting bolt for lifting the needle when the needle is reset.There is a voltmeter on the panel of the machine.When the paint film on the sample board is scratched by the needle,the voltmeter has an indication,so that it can be determined whether the paint film is scratched,eliminating human error.

　　漆膜自动划痕仪注意事项：

　　★如果是测定水性木漆得耐划伤性试验，由于底材是木材，所以电压表无指示。划痕后取下试板观察试板是否被划伤。根据需要可以使用适当倍数的放大镜，但应在试验报告中注明放大倍数。

　　★机器支架上的平衡块是用来平衡支架的自重，机器出厂时已经通过调整确定了位置，请不要轻易松开平衡块上的螺丝，以免影响测试的准确性。

　　★待所有试验结束后，取下砝码，并放回原处，盖好包装木盒盒盖，以保护本仪器的清洁。

　　Note for automatic film scratch tester:

　　★If it is a scratch resistance test for water-based wood paint,the voltmeter has no indication because the substrate is wood.After scratching,remove the test plate and observe whether the test plate is scratched.A magnifying glass with an appropriate magnification can be used as required,but the magnification should be noted in the test report.

　　★The balance weight on the machine support is used to balance the weight of the support.The machine has been adjusted to determine the position when leaving the factory.Please do not loosen the screws on the balance weight easily to avoid affecting the accuracy of the test.

　　★After all the tests are finished,remove the weight and put it back in place,and cover the wooden box lid to protect the cleanness of the instrument.

　　漆膜自动划痕仪装箱单：

　　A)主机1台

　　B)附件1.砝码箱1盒

　　2.说明书1本

　　3.电源线1根

　　Packing list of automatic film scratch tester:

　　A)Host 1

　　B)Accessories 1.Weight box 1 box

　　2.Manual 1

　　3.Power cord 1