How to judge whether the 3 strands rope are qualified?

What are the criteria for judging whether the three strands are qualified?

3 strands rope is generally made of gray-yellow twine, with a length of 6 meters and a weight of 0.15 kilograms. The tensile strength is larger than that of the tie rope, the defects are perishable, and the cost is high.

The varieties include nylon multifilament (line), polypropylene filament (line), polypropylene, polyester, polypropylene/polyester blend and other products. Its products have a wide range of applications, such as high strength, low elongation, wear resistance, corrosion resistance, soft and smooth, easy to operate. At the same time, special ropes such as anti-static can be made.

There are three indicators for judging whether the 3 strands rope are up to standard:

1, twist

When the yarn or the nylon thread is twisted, the two sections produce the same number of revolutions, which is expressed by the number of turns in the unit length, which is called the twist.

2, the corner

The roundabout is used to measure the degree of twisting of different thick slivers. The busbar that has been twisted and becomes a cylindrical spiral is unfolded, and the pitch is L. The spiral is expanded in the pitch to be a right-angled triangle. The tangent to any point on the helix is at an angle β to the axis, called the meander angle.

3, banner

When twisted, the length of the arc that is rotated in a unit length by a point on the yarn section is called a web.

Through the above introduction, have you got a certain understanding of how to judge the 3 strands rope?