As an important part in the automation industry, linear guide rail is required to be waterproof and dustproof in many cases. Can linear guide rail be?

直线导轨是可以在有水的环境中使用的，因为在使用直线导轨时，无可避免地要和水接触（空气中也有水蒸气），加工、车床等，通常都需要用到水，那么直线导轨上添加的导轨油遇水会分解，油会流到切削液，直线导轨切削液会被污染，这时候解决直线导轨分水性能是非常重要的，常用的方法就是在直线导轨上面加防水护罩，但是在不必要的情况下，我们通常不建议在水多的环境中使用直线导轨。

The linear guide rail can be used in the environment with water, because when using the linear guide rail, it is inevitable to contact with water (there is also water vapor in the air). Water is usually required for machining centers and lathes, so the guide rail oil added on the linear guide rail will decompose in case of water, the oil will flow to the cutting fluid, and the linear guide rail cutting fluid will be polluted, At this time, it is very important to solve the water separation performance of the linear guide rail. The common method is to add a waterproof shield on the linear guide rail. However, under unnecessary circumstances, we usually do not recommend using the linear guide rail in a watery environment.

使用直线导轨要考虑到的问题主要有以下几种：

The following problems should be considered when using linear guide rail:

是直线导轨的生锈，不纯水有腐蚀性，虽然有不锈钢直线导轨，但是不锈钢也不能完全做到防锈蚀，再加上直线导轨经常做摩擦运动，滚动体和导轨肯定有磨损，直线导轨磨损的地方更容易生锈。

The first is the rust of the linear guide rail. Impure water is corrosive. Although there is a stainless steel linear guide rail, the stainless steel can not completely prevent rust. In addition, the linear guide rail often makes friction movement, the rolling element and guide rail must be worn, and the worn parts of the linear guide rail are more likely to rust.

其次，直线导轨在使用时添加润滑剂，直线导轨要想保证滑块速度、精度、使用寿命，要按时按量添加直线导轨专用润滑剂，当直线导轨滑块在水中浸润运动时，水会进入直线导轨滑块内部，导致直线导轨滑块膨胀，此外，直线导轨滚动体旋转速度快，也很容易造成直线导轨滑块损坏的问题。

Secondly, add lubricant when using the linear guide. In order to ensure the speed, accuracy and service life of the slider, add special lubricant for the linear guide on time and in quantity. When the linear guide slider soaks in the water, the water will enter the linear guide slider, causing the linear guide slider to expand. In addition, the rolling body of the linear guide rotates fast, It is also easy to cause damage to the sliding block of the linear guide rail.

直线导轨滑块浸入水中会受到水的阻力、冲击力，所以在安装直线导轨之前要考虑并计算好水对直线导轨运动速度的影响以及水冲击和障碍物引起的振动也要考虑。

The sliding block of linear guide rail will be subject to the resistance and impact force of water when immersed in water, so the influence of water on the moving speed of linear guide rail and the vibration caused by water impact and obstacles should be considered and calculated before installing linear guide rail.

综上所述，从直线导轨使用材料来说，无论是不锈钢直线导轨还是轴承钢直线导轨都不能完全做到防生锈，可以通过添加防水护罩的方式来保护直线导轨延迟直线导轨的生锈；一般如果不是必要，我们不建议在水多的环境中使用直线导轨。

To sum up, in terms of the materials used for the linear guide, neither the stainless steel linear guide nor the bearing steel linear guide can completely prevent rust. The linear guide can be protected by adding a waterproof shield to delay the rust of the linear guide; Generally, if it is not necessary, we do not recommend the use of linear guide rail in water environment.