Determination of tension size, both domestic and international specialized Newton tension meter, mm tension meter. Newton instrument units N / cm, higher prices (there have been articles in professional journals introduced the principle, structure); mm instrument is displayed in mm, the test principle and Newton's tension meter accuracy, low price, but few manufacturers in the domestic flour industry.
Of course, the elongation changes can also be used to screen the tensor a positive correlation between test method to control the degree of stretched sheets.
Pneumatic Stretching Machine, Flour Mill and size by regulating the air pressure to control the stretch tension, of course, must be in advance to prepare through practice or according to the stretching of the manufacturer to provide data, the other must pay attention to air pressure adjustment Stretching only from small to large.
Mesh stretched wants to achieve, that is, to ensure a uniform and moderate screen tension. Screen stretched tight the effect of screen management, "the truth is often that people can know, while the stretched sheets tight hazards but did not pay attention to, even thought the misconception that stretch the more compact the better, so it is necessary to this highlights.
Too much tension will lead to:
A. deformation of the mesh opening size larger;
B. Because of the nylon net has its own extension of the limit, over-stretched sheets will shorten its life;
C. stretched too tight will reduce the flexibility of the screen, especially sifter makes it impossible to play the role of the clean-up, easy to cause the sieve blockage;
D. excessive tension can also result in the sieve core deformation (especially size sieve core of more than 740mm × 740mm), resulting in channeling leakage.
Stretched sheets, although the process may seem simple, the actual need to correct and careful operation.
