1. The tension range of the test material (can stretch the tensile range (can stretch The intensity range).
The range difference between the tension range of the test material will determine the structure of the sensor size and the tensile tester, but this has little effect on the price (except the double -pillar type). For ordinary soft packaging manufacturers, 200 Newton is enough. Therefore, a single -column type should be used. Ordinary, the tensile below 5kn uses a single -pillar type, and the double -pillar type should be selected for more than 5kn. (Unclear, you can contact more customer service)
2. Use the appropriate itinerary space according to the test
Generally known as the distance between the itinerary (test itinerary)+the height The height of the fixture+sensor height. Because different test materials will choose different fixtures, you can choose the fixture to know the specific test itinerary. Different deformation of the materials requires different test strokes. If the material deforms 600mm, the test itinerary of 750mm-800mm should be considered. Due to the testing of different materials, according to different test standards, different test standards require different standard distances.
Test the performance and requirements of the required films of a soft packaging film as an example. The itinerary is 600-800mm. The material extension rate of more than 1000%can be selected by 1000 or 1200mm.
3. Control method, with LCD touch screen control and computer control method
LCD touch screen means using touch screen (micro -computer) to control the machine. Control, usually, we use the LCD display model to obtain some basic parameters, such as stretching strength, large value, average value, and small value. This result can be output with a thermist printer. Computer type is a computer -controlled machine. It has a strong analysis function and can usually get all the results that customers want, such as high value, elongation rate, tensile strength, fixed force extension, fixed extension value, yielding yield, yielding Power, elastic modulus, large test force, yield point, modulus ........ All results and test curves can be output as word, excel, users can easily edit, LCD display model can also display the test curve, the LCD display model can also display the test curve. However, the computerized model can collect more data. In this state, if you want to test the curve accurately, you should choose a computerized model.
4. Selection of fixtures
Generally speaking, the tensile machine can be used by replacing different fixtures, which can be used to achieve stretching, compression, bending, tearing, cutting, cutting, cutting, and 180 degrees stripping, 90 degrees divestiture, etc.Same test function.
5. Test speed
Generally speaking, there are 10 ~ 500mm/min, some are 0.1 ~ 500mm/min. The speed adjustment system, the cost is low, the roughness affects the accuracy; the latter uses the servo system, the price is expensive, the accuracy is high. For soft packaging companies, choose the servo system, and the speed regulation range is 1 ~ 500mm/min. The price is within a reasonable range.
6. Measurement accuracy
accuracy problem, including measurement accuracy, speed accuracy, deformation accuracy, displacement accuracy. These accuracy values u200bu200bcan reach positive and negative 0.5. But for general manufacturers, it is enough to reach 1%accuracy. In addition, the resolution of force can almost reach one hundred thousand.
7. The main configuration of product machinery
Transmission, there are screw transmission and rack transmission, the former is expensive, used for high precision, high test repetitive; , Test repetitive.
The screw has a decisive effect on the measurement of tensile accuracy. Generally, there are roller screws, trapezoidal screws, general screws. Among them, the roller screw is highly accurate, but the performance of its performance can only be used by the computer servo system to play, and the whole price is relatively expensive.
Transmission, with gear transmission and chain transmission. The former is expensive and used for high precision; the latter is cheap and used for low accuracy. The main cost of sensors is life. Optical induction is a relatively advanced technology. Generally, it can be used more than 100,000 times. Import and some domestic joint venture manufacturers can be achieved. The stretching performance of plastic and rubber is one of the important and basic performance in its mechanical properties. It largely determines the use of the use of this kind of plastic and rubber. The stretching performance can be detected by stretching test.
8. Pre -sale and after -sales service
Service is an important criterion for the reputation of a manufacturer brand. This standard is not just seen by the eyes. It depends on whether the manufacturer is professional and whether the pre -sale can Help us solve the technical selection problems, whether there is guarantee for after -sales and whether it is timely. The brand competitiveness is one aspect, and the actual production service guarantee of the manufacturer is an important aspect.
In summary, buying a tensile tester also needs to carefully observe some related data to identify the quality. Only by buying the correct tensile machine can help to achieve the ideal for the work in reality. A good effect. Of course, when buying a rally machine, it depends on the specific needs of the tensile machine, and consult customer service.