钢丝绳预张拉设备介绍
钢丝绳是由多根钢丝经过一次、两次甚至多次绞捻而成，钢丝绳的伸长就由弹性伸长、温度变化带来的膨胀性伸长以及结构性伸长。弹性伸长、温度变化带来的膨胀性伸长是物体的固有特性，而在钢丝绳使用之前进行预张拉是消除结构性伸长唯一的手段。
Steel Wire Rope Pre-tensioning Equipment Introduction
Steel Wire Rope is made of wires after once or twice or even multiple strand. Its extension types include elastic extension, temperature expansive extension and structural extension. Elastic and temperature expansive extension are intrinsic characters of the objects. But for structural extension, the only way to eliminate it from wire rope is to pre-tension ropes before using.
钢丝绳预张拉的形式
钢丝绳预张拉形式，有在线预张拉，离线间歇式预张拉，离线连续式预张拉等几种形式，不管何种形式都是通过施加一定的载荷并保持一定的时间来实现的。
The Pre-tensioning Forms for Steel Wire Rope
The pre-tensioning forms for wire rope includes: online pre-tensioning, offline interval pre-tensioning and offline continuous pre-tensioning etc. No matter which form it is, pre-tensioning is all completed after applying certain load on ropes for a period of time.
