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How to choose a good electronic tensile testing machine

Source：Chengde Jinjian Testing Instrument Co., Ltd　  　Views：761　  　Time：2021-01-26

How to choose a good electronic tensile testing machine?

At present, many manufacturers in the purchase of electronic tensile testing machine, are full of a lot of questions and confusion, how to choose the right one? How to choose the best price performance? What standard determines the performance of the pulling machine? With the emergence of many brands of electronic tension machine equipment on the market, the purchasing manufacturers are even more instant head big!

Today, Jinjian testing machine, I will tell you several points for attention when purchasing electronic tensile testing machine.

Eight points for attention in purchasing electronic tensile testing machine

1. Standard configuration

There are three basic configurations of intelligence: host, microcomputer and printer. If the microcomputer has strong function, it can print directly. In addition, it can also be equipped with ordinary computer. With a computer, you can carry out complex data analysis, such as data editing, partial amplification, adjustable report form, group style statistical analysis. If equipped with a computer, the manufacturer should add the corresponding control system.

2. Main configuration of product machinery

Transmission, there are screw drive and rack drive, the former is expensive, used for high precision, high test repeatability; the latter is cheap, used for low precision, low test repeatability, and the corresponding structure of the single arm type is the door type structure, it is suitable for relatively large tension, such as one ton or more. So flexible packaging manufacturers basically do not need.

3. Measurement accuracy

The accuracy includes force measurement accuracy, velocity accuracy, deformation accuracy and displacement accuracy. These precision values can reach up to plus or minus 0.5. But for general manufacturers, 1% accuracy is enough. In addition, the force resolution is almost one in 300000.

4. Test travel

Choose the type according to the nature of the items that your company needs to test, such as testing the items with large elasticity and long length. When ordering the tensile testing machine, you should communicate with the technical department of the manufacturer in advance. Take the flexible packaging film as an example, its performance and requirements need to be tested, and the stroke is 600-1500mm. If the material elongation exceeds 1000%, the stroke can be 1000 or 1200mm.

5. In the experiment project

Flexible packaging requires a multi-purpose pulling machine, that is, on the basis of different fixtures, it can be used for stretching, compression, bending, tearing, shearing, 180 degree peeling and 90 degree peeling tests.

6. The range of material tension to be tested should be considered first

The different range of electronic tensile testing machine determines the different sensors used, which also determines the structure of the tensile testing machine, but this item has little impact on the price (except the door type). For general flexible packaging manufacturers, the tension range of 100 Newton is enough. Therefore, it is also decided to adopt the single arm type.

7. Output results

The output results of electronic tensile testing machine can be set at will: maximum force value, elongation, tensile strength, constant force elongation, constant elongation force value, yield strength, elastic modulus and maximum test force. This can be said to be the most comprehensive result of microcomputer operation. The products of some foreign manufacturers can generally export these 8 items. Some domestic manufacturers can output 5-6 items, while others can only output 6 items of maximum force, average force and minimum force.

8. Test speed

Some of the market equipment is in 10 ~ 500mm / min, some in 0.001 ~ 500mm / min, the former generally uses ordinary speed control system, the cost is low, affect the precision; the latter uses servo system, the price is expensive, high precision, for soft packaging enterprises, choose servo system, speed range of 1 ~ 500mm / min is enough, so it does not affect the precision, the price is within a reasonable range.


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