1.The influence of warp wire density and weft wire density on the interlacement strength.
The firmness of the interweaving point is significantly affected by both the warp density and weft density:
(1)With an increase in warp density and weft density, the number of interlacing points on 1 square decimeter increases, and the resistance to twisting of the mesh block increases significantly; conversely, it decreases when the densities decrease. When the weft density increases by 5% and the warp density also increases by 5%, the number of interlacing points will increase by 10.25% (1.05²=1.102 5).
(2)Increasing the warp density and weft density will lead to an increase in the bending angle of both the warp and weft threads in the mesh. With the increase in bending angle, the twisting resistance of individual interweaving points also increases, and vice versa.
2.The influence of the diameter of warp and weft threads on the firmness of the intersection point.
When the diameter of the longitude and latitude threads is increased, it has a significant impact on the firmness of the intersection from two aspects:
(1)When the longitude and latitude threads are thickened, their bending moment W increases sharply, resulting in a significant increase in the torque resistance of each crossover point.
(2)The longitude and latitude wires are made thicker and the longitude bend angle is increased, thus increasing the torsional resistance at each intersection point. With the thicker latitude wires, the torsional resistance increases even more noticeably.
3.The tensile strength and yield strength of the metal wire have a significant effect on the interweaving point tightness. Metal mesh woven with metal wire of higher yield strength shows a significant increase in tightness at each interweaving point.
4.The impact of process parameters on the firmness of the screening mesh.
(1)The tension size of weaving significantly affects the firmness of interlacing points. When the warp threads are equipped with insufficient tension during weaving, the firmness of interlacing points will greatly decrease. This is the main factor in the weaving process.
(2)Warp inter cross time and height, as well as process parameters such as warp delivery time, also affect the firmness of the interlacing points. Too early or too late twist time will reduce the firmness of the interlacing points. Plain weave with equal tension on upper and lower warp is less firm than plain weave with unequal tension on upper and lower warp. Using warp delivery after carding results in better firmness of the interlacing points. If warp delivery is done during carding, the firmness of the interlacing points is the worst.
(3)When the opening size is too large during weaving, it will significantly reduce the firmness of the interlocking point.
5.The impact of tooling on the firmness of screening mesh.
(1)If the diameter of the steel peg holes is too small or too big, it will significantly reduce the firmness of the interlocking points of the net. A reasonable size of the box holes can improve the firmness of the interlocking points.
(2)Choosing thick selvedge edges and arranging them too tightly can cause a decrease in warp tension and reduce the firmness of the interweaving points. Choosing selvedge edges that are too thin can cause grooves in the warp yarn and also reduce the firmness of the interweaving points.
6.The impact of equipment on the stability of the screening mesh.
(1)If the chest roller does not rotate, the firmness of the interweaving points of the super light metal mesh will decrease. The interweaving points of the mesh woven by the rotating chest roller have better firmness.
(2)There is a malfunction in the weaving machine, resulting in uneven density of the metal mesh and decreased firmness of the interweaving points due to weft deviation.
