Its use in the industry: research institutes, commodity inspection and arbitration institutions, colleges and universities and rubber, tires, plastics, wire and cable, footwear, leather, textile, packaging, building materials, petrochemical, aviation and other industries, for material development, physical testing Indispensable testing equipment such as teaching research, quality control, feed inspection, random inspection of production lines, electronic tension machine fixtures as an important part of the instrument, different materials require different fixtures, and whether the test can be carried out smoothly and the test results An important factor in accuracy.
Purchase notes:
First, you should first consider the need to test the range of material tension.
The difference in the range of tension determines the difference between the sensors used and the structure of the tension machine, but this has little effect on the price (except for the door type). For example, a single-arm type with a pull force range of less than 5000 Newtons is sufficient.
Corresponding to the single-arm type is a gantry structure, which is adapted to a relatively large pulling force, such as one ton or more.
Second, the problem of the test itinerary.
According to the performance and requirements of the test, the stroke can be 600-800mm. For materials with an elongation of more than 1000%, a stroke of 1000 or 1200 mm can be used.
Third, the standard configuration problem.
The three basic configurations of intelligent: host, microcomputer, and printer, if the microcomputer is powerful, you can print directly. It can also be equipped with a regular computer. With a computer, you can perform complex data analysis, such as data editing, partial magnification, adjustable report formats, and statistical analysis of groups.
If equipped with a computer, the manufacturer should give the corresponding control system.
Fourth, the output results.
The test result output can be arbitrarily set: maximum force value, elongation, tensile strength, constant strength elongation, constant elongation force value, yield strength, elastic modulus, and maximum test force. This can be said to be the most comprehensive result of the output when the microcomputer is operated. Some manufacturers in foreign countries can generally output these 8 items. Some domestic manufacturers can output 5-6 items, and some manufacturers can only output the maximum force value, average value and minimum value.
5. Can be used as an experimental project.
The tension machine is required to be multi-purpose, that is, it can be stretched, compressed, bent, torn, sheared, 180 degree peeled, and 90 degree peeling test on the basis of different fixtures.
Sixth, the main configuration of product machinery:
Transmission, screw drive and rack drive, the former is expensive, high precision, high test repeatability; the latter is cheap, low precision, low test repeatability.
The lead screw has a decisive effect on the measurement of the pull force accuracy. Generally there are ball screws, trapezoidal screws, and general screw. Among them, the ball screw has the highest accuracy, but its performance depends on the operation of the computer servo system, and the whole set price is relatively expensive.
The main cost of the sensor lies in the life. Photoelectric induction is one of the more advanced technologies. It can be used more than 100,000 times. It can be achieved by import and domestic joint ventures.
Seven, test speed.
Some of the market equipments are in the range of 10~500mm/min, and some are in the range of 0.01~500mm/min. The former generally uses the ordinary speed control system, the cost is low, and the roughness affects the accuracy; the latter uses the servo system, which is expensive and has high precision.
Eight, measurement accuracy.
Accuracy issues, including force measurement accuracy, speed accuracy, deformation accuracy, and displacement accuracy. These precision values ​​can be up to plus or minus 0.5. But for the average manufacturer, achieving 1% accuracy is sufficient.
Purchase notes:
First, you should first consider the need to test the range of material tension.
The difference in the range of tension determines the difference between the sensors used and the structure of the tension machine, but this has little effect on the price (except for the door type). For example, a single-arm type with a pull force range of less than 5000 Newtons is sufficient.
Corresponding to the single-arm type is a gantry structure, which is adapted to a relatively large pulling force, such as one ton or more.
Second, the problem of the test itinerary.
According to the performance and requirements of the test, the stroke can be 600-800mm. For materials with an elongation of more than 1000%, a stroke of 1000 or 1200 mm can be used.
Third, the standard configuration problem.
The three basic configurations of intelligent: host, microcomputer, and printer, if the microcomputer is powerful, you can print directly. It can also be equipped with a regular computer. With a computer, you can perform complex data analysis, such as data editing, partial magnification, adjustable report formats, and statistical analysis of groups.
If equipped with a computer, the manufacturer should give the corresponding control system.
Fourth, the output results.
The test result output can be arbitrarily set: maximum force value, elongation, tensile strength, constant strength elongation, constant elongation force value, yield strength, elastic modulus, and maximum test force. This can be said to be the most comprehensive result of the output when the microcomputer is operated. Some manufacturers in foreign countries can generally output these 8 items. Some domestic manufacturers can output 5-6 items, and some manufacturers can only output the maximum force value, average value and minimum value.
5. Can be used as an experimental project.
The tension machine is required to be multi-purpose, that is, it can be stretched, compressed, bent, torn, sheared, 180 degree peeled, and 90 degree peeling test on the basis of different fixtures.
Sixth, the main configuration of product machinery:
Transmission, screw drive and rack drive, the former is expensive, high precision, high test repeatability; the latter is cheap, low precision, low test repeatability.
The lead screw has a decisive effect on the measurement of the pull force accuracy. Generally there are ball screws, trapezoidal screws, and general screw. Among them, the ball screw has the highest accuracy, but its performance depends on the operation of the computer servo system, and the whole set price is relatively expensive.
The main cost of the sensor lies in the life. Photoelectric induction is one of the more advanced technologies. It can be used more than 100,000 times. It can be achieved by import and domestic joint ventures.
Seven, test speed.
Some of the market equipments are in the range of 10~500mm/min, and some are in the range of 0.01~500mm/min. The former generally uses the ordinary speed control system, the cost is low, and the roughness affects the accuracy; the latter uses the servo system, which is expensive and has high precision.
Eight, measurement accuracy.
Accuracy issues, including force measurement accuracy, speed accuracy, deformation accuracy, and displacement accuracy. These precision values ​​can be up to plus or minus 0.5. But for the average manufacturer, achieving 1% accuracy is sufficient.
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