Matters needing attention when purchasing automatic push-pull test machine
The automatic push-pull force testing machine has been widely used in the market. It is a material development for testing various physical and mechanical properties of various metal or non-metal materials, and is an indispensable testing equipment for physical testing, teaching research, quality control, etc. When purchasing a testing machine, what aspects should we pay attention to? Let's take a look.
1. Confirm the demand
Determine what tests the company's products need to be tested. The automatic push-pull force tester is also called a universal material tester. It can test the elongation, elongation, tensile and compressive strength of various materials and finished lamps. It can also do tearing, bending, peeling, Compression and flexural lamp test. Different types of automatic push-pull test machines are different, and the corresponding fixtures are also different, so the price will naturally be different.
2. The tension problem
The different pulling force range determines the different sensors used, which also determines the structure of the pulling machine, but this item has little effect on the price (except for the door type). For general flexible packaging manufacturers, a pulling force range of 100 Newtons is sufficient. Therefore, it was decided to use a single-arm type. The structure corresponding to the single-arm type is the door type structure, which is suitable for relatively large pulling forces, such as one ton or more. Therefore, flexible packaging manufacturers basically do not need it.
3. The problem of test stroke
This needs to be determined according to your own products. Generally, the stroke of the tensile machine on the market is between 600mm-800mm-1000mm. If it is the part and material of the test product, it is with most manufacturers.
4. Output results
The test result output result can be set arbitrarily: 8 items of force value, elongation rate, tensile strength, constant elongation, constant elongation force value, yield strength, elastic modulus, and large test force. This can be said to be the most comprehensive result output during microcomputer operation. The products of some foreign manufacturers can generally export these 8 items. Some domestic manufacturers can output 5-6 items, and some manufacturers can only output three items: strong value, average value and small value
5. Test speed
The speed stipulated by the national standard is 200mm/min. The speed on the market is between 10-500mm and 0.1-500mm/min. The former generally uses an ordinary motor, stepless speed change, the accuracy is relatively low, and naturally the price is relatively cheap; the latter uses a servo motor, a computer servo system, which has higher accuracy and higher resolution. Manufacturers can make reasonable choices according to actual needs.
6. Precision issues
This includes speed accuracy, force measurement accuracy, displacement accuracy, and deformation accuracy. The high values ​​of these accuracy can reach ±0.5. For general manufacturers, an amplitude of 1% accuracy is sufficient. In addition, the force resolution can basically reach one hundred thousandths.
There are many models of this product, and the cases are for reference only. I hope to help you so that you can buy a suitable and satisfactory testing machine.
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Yilian Smart Manufacturing Co.,Ltd , https://www.ylcrepemaker.com