How to choose stainless steel wire according to purpose
- 2020-04-26-

To economically develop and use stainless steel wire safely, it is necessary to appropriately choose stainless steel wire from the following aspects. When choosing stainless steel wire, it should be considered according to different main uses. Under certain specifications of stainless steel wire diameter and compressive strength, a stainless steel wire with a large metal material relative density index (that is, the ratio of the cross-section of the stainless steel wire to the total area of ​​the rope) should be selected. Under normal circumstances, the relative density index of stainless steel wire is in the order of surface touch rope beyond line touch rope, and line touch rope beyond point touch rope.

Wear-resistant function. The larger the surface of the stainless steel wire and the movable pulley or steel wire rope drum surface, the smaller the contact stress, the better the wear resistance function will be. Therefore, the quality of the wear resistance function is the sealing rope, special-shaped strand rope, and multiple strands. Rope, round strand rope. For resistance to external damage, a thicker surface layer of stainless steel wire is advantageous; for resistance to internal damage, line contact and surface contact are better than point contact.

Resistance to fatigue. Under normal circumstances, the surface touch rope is better than the thread touch rope, the line touch rope is better than the point contact rope; the pre-tensioned rope is better than the non-pretensioned rope; the same direction twist is better than the interactive twist when the same structure is used; chemical fiber rope core The rope is better than the metal core rope. The general metal material rope core of stainless steel wire is better than chemical fiber rope core, the less strands are better than the more strands, the line touch is better than the point contact, the surface touch is better than the line touch, and the interactive twist of the same structure is better than the same structure. Direction twist.

Corrosion resistance. Most of the stainless steel wire is used in ambient air or even acid or alkali corrosive substances. Practical experience chooses hot-dip galvanizing, zinc-aluminum alloy profiles, frame sealing anti-rust treatment, lowering the moisture content of the rope core, coating polyester, plastic and other anti-corrosion countermeasures. Will double the service life of stainless steel wire.

Flexibility. When the rope diameter is the same, the greater the number of single anchors of the stainless steel wire, the greater the flexibility index (the ratio of the diameter of the stainless steel wire to the diameter of the thickest stainless steel wire in the rope), and the better the flexibility.