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The manual tear strength tester is a testing equipment independently developed and produced by our company QINSUN It is used to measure the impact crack of textiles, woven fabrics, non-woven fabrics, protective clothing materials and coated fabrics Strong, the advantages are as follows:
Benefits:
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1. The company has been engaged in instrument testing for more than ten years, and has a after-sales service team;
2. It can solve various problems timely and solve quickly and relieve customers;
3. Spare parts are available to solve the problem of long lead time for ordering spare parts;
4. Outsource maintenance services;
5. Long-term supply of various commonly used test instruments ;
6. Happyf abreast of the update of industry standards and provide test instruments to meet the new standards in time.
Main parameters:
1. Mechanical type, pointer display
2. Test range: 400, 800, 1600, 32006400gms (counterweight optional) ;
3. Test Accuracy: ±0.5%;
4. Pendulum Restoration: Manual.
Experimental principle:
Single seam method At tearing creates a force triangle when tearing the fabric. When the tensioned weft yarns in the sample are gradually separated up and down, the warp yarns that are not directly under tension begin to shift relative to the tensioned weft yarns and gradually close in to form an approximately triangular region. At the bottom of the tear opening, the warp yarns in the tensioned triangle are under tension together, and the warp yarn near the bottom of the trianglek bears the greater force, and the force on the other warp yarns gradually decreases according to a certain load gradient.
Due to the frictional resistance between the yarns, sliding is limited. When sliding, the tension of the warp increases rapidly and the deformation elongation also increases sharply. When the first warp yarn that forms the basis of the tensioned triangle is stretched to break stretch, this warp yarn breaks, and the tensioned state of the second warp yarn is immediately transformed into the state before the front warp yarn breaks, so repeated, the warp yarn one Roots are continuously broken one by one, creating a fracture surface like a knife cut. It can be seen that when the single seam method is torn, the broken yarn is the yarn of the non-tension system, and the direction of the pulling force is perpendicular to the original axis of the broken yarn. 64,000mN weight, even with heavy preparation cutters.
As a modern technology enterprise integrating RD, production, sales, training and service, QINSUN committed to bringing more humanized test instruments to the market and long-lasting textiles. We can also accept non-standard customization, and we can conduct targeted testing according to customer requirements before purchasing to ensure that the purchased instruments are suitable. Shanghai QINSUN Precision Electromechanical Technology Co., Ltd. is a factory of QINSUN
