1、在使用仪器前应仔细阅读使用说明书，详细了解仪器操作步骤及使用注意事项，避免由于使用不当而造成仪器损坏。
2、仪器电器元件、开关、插座安装位置严禁自行拆装，如果擅自拆装将可能出错而引发安全事故。
3、本仪器试验力在加载或试验力未卸除的情况下，严禁转动压头，否则会造成仪器损坏。只能等试验力卸除后主屏幕回到操作界面时，才能转动压头。
4、仪器在测量状态下，请不要施加试验力，如不小心按启动键，这时不能转动压头，只有等待试验力施加完毕后，才能转动压头。
5、金刚石压头
1)压头和压头轴是仪器非常重要的部分，因此在操作时要十分小心不能触及压头。2)为了保证测试精度，压头应保证清洁，当沾上了油污或灰尘时可用脱脂绵沾上酒精
(工业用）或乙醚，在压头顶尖处小心轻擦干净。
6、目镜
1)由于各人眼睛的视差，观察目镜视场内的刻线可能模糊，因此观察者换人时，应先微量转动目镜上的眼罩(8)，使观察到视场内的刻线清晰。
2)目镜插在目镜管内，要注意应插到底，不能留有间隙，否则会影响到测量的准确度，当测量压痕对角线时，须测量其顶点，然后转90°再测量另一对顶点。
7、试样
1)试样表面必需清洁，如果表面沾有油脂和污物，则会影响测量准确性。在清洁试样时，可用酒精或乙醚抹擦。
2)当试样为细丝、薄片或小件时，可分别用细丝夹持台、薄片夹持台及平口夹持台夹持，放在十字试台上进行测试如果试件很小无法夹持，则将试件镶嵌抛光后再进行试验。
8、努普硬度的测定
1)换压头
用螺丝刀将压头(5)的固定螺钉旋松，取下压头，换上努普压头。装的时候认好方向，压头的红点朝前，应使长棱线与试台平行。在装上努普压头后可能要调整一下中心。
2）硬度测定
硬度测定方法与维氏基本相同，而努普硬度只需测定长的对角线即可，然后按数字键确认，HK硬度值就可在显示屏上显示。
9、经验参考
在测量维氏硬度时，只要试件条件允许，尽量使用大试验力，测量相对比较准确。一般是硬材料用较大的试验力;软材料用较小的试验力。
按照我们的习惯,压痕对角线长度在50um左右时测量最方便,但也要考虑材料的厚度。
参考:材料厚度≥1.5×压痕对角线长度
比如:材料厚度=0.1mm，则压痕对角线长度不能大于0.066mm。这就满足:0.1≥1.5×0.066。
英斯特力仪器是一家集研发、生产及销售于一体的 影像测量仪，拉力试验机, 硬度计 ,探伤仪, 粗糙度仪, 测厚仪, 金相设备厂家, 致力于为客户提供更好的检测仪器。
1. Before using the instrument, read the instruction manual carefully, understand the operation steps and precautions of the instrument in detail, and avoid the damage of the instrument due to improper use.
2. The installation position of instrument electrical components, switches and sockets is strictly forbidden to disassemble and assemble by themselves. If they are disassembled without authorization, they may make mistakes and cause safety accidents.
3, the instrument test force in the loading or test force is not removed, it is strictly prohibited to turn the head, otherwise it will cause damage to the instrument. The head can only be rotated when the main screen returns to the operating interface after the test force is removed.
4, the instrument in the measurement state, please do not apply test force, such as accidentally press the start button, then can not rotate the head, only wait for the test force is applied, can rotate the head.
5, diamond head
1) The head and the head shaft are very important parts of the instrument, so be very careful not to touch the head during operation. 2) In order to ensure the accuracy of the test, the head should be clean, when stained with oil or dust can be degreased cotton dipped in alcohol
(for industrial use) or ethyl ether, wipe carefully at the top of the indenter.
6, the eyepiece
1) Due to the parallax of each person's eyes, the lines in the field of view of the observation eyepiece may be blurred. Therefore, when changing the observer, the eye mask on the eyepiece should be rotated slightly first (8) to make the lines in the field clear.
2) When the eyepiece is inserted into the eyepiece tube, it should be noted that the eyepiece should be inserted to the end without leaving a gap, otherwise the accuracy of measurement will be affected. When measuring the indentation diagonal, the vertex must be measured, and then turn 90° to measure another pair of vertices.
7, sample
1) The sample surface must be clean, if the surface is stained with grease and dirt, it will affect the accuracy of measurement. When cleaning the sample, rub it with alcohol or ether.
2) when the sample is filaments, thin slices or small pieces, the filaments, thin slices and flat mouth clamps can be respectively clamped on the cross test table for testing if the specimen is too small to be clamped, the specimen is inlaid and polished before the test.
8. Determination of Knoop hardness
1) for head
Loosen the fixing screw of the pressure head (5) with a screwdriver, remove the pressure head, and replace the noop pressure head. When loading, recognize the direction, the red point of the pressure head forward, should make the long prism parallel to the test table. It may be necessary to adjust the center after installing the noop head.
2) Hardness test
The hardness measurement method is basically the same as vickers, and the knoop hardness only needs to measure the long diagonal line, and then press the number key to confirm, THE HK hardness value can be displayed on the screen.
9. Experience reference
In the measurement of Vickers hardness, as long as the specimen conditions allow, try to use large test force, the measurement is relatively accurate. Generally hard materials with a larger test force; Soft materials with less testing force.
According to our habit, the indentation diagonal length in about 50um when the most convenient measurement, but also to consider the thickness of the material.
Reference: Material thickness ≥1.5 x indentation diagonal length
For example: material thickness =0.1mm, the indentation diagonal length can not be greater than 0.066mm. This satisfies :0.1≥1.5×0.066.
客服1 