In the use of linear guides, what factors will affect the service life of linear guides? There are many factors affecting the service life of linear guides, most of which are influenced by external factors.

　　所謂外在因素是指安裝拆卸、維修保養、工作環境等方面，在進行直線導軌的安裝拆卸時，一定要遵循各種安裝要求和注意事項來嚴格操作。工作情況狀態下，大部分的影響主要是來源于直線導軌的磨損，機加過程中的鐵削，不定期加油脂、大量的粉塵等都會使直線導軌在運轉過程中，造成一定的損害，從而縮短直線導軌的使用壽命。

　　The so-called external factors refer to the installation and disassembly, maintenance, working environment and other aspects, in the installation and disassembly of linear guide, we must follow a variety of installation requirements and precautions to strictly operate. Under the working condition, most of the influence mainly comes from the wear and tear of the linear guideway, iron cutting in the process of machine adding, irregular grease adding, a large amount of dust and so on, which will cause certain damage to the linear guideway in the operation process, thus shortening the service life of the linear guideway.

　　使用的時候注意維護直線導軌、滾珠絲桿表面的干凈，定期加油脂，附著在表面的渣滓。

　　When using, pay attention to maintaining the surface of straight line guide and ball screw, regularly add grease to remove the dregs attached to the surface.

　　直線導軌熱點校直必須注意的幾個問題

　　Several Problems Needing Attention in Hot Spot Straightening of Linear Guideway

　　（1）熱點校直必須在回火后進行，不允許在淬火后立即進行。這是因為淬火內應力很大，熱點校直時易造成開裂。

　　(1) Hot spot straightening must be done after tempering, not immediately after quenching. This is because the internal stress of quenching is very large, hot spot straightening is easy to cause cracking.

　　（2）不允許在熱點直校處進行反復熱校，這樣校正一方面效果不大，另一方面也易引起開裂。

　　(2) Recurrent thermal calibration is not allowed in the hot spot direct calibration office. This calibration has little effect on one hand, and on the other hand, it is easy to cause cracking.

　　（3）熱點校正過的工件不宜進行發黑處理，這是因為發黑前要經過酸洗，而浸酸發黑后常常在熱點區引起裂紋。

　　(3) The workpiece corrected by hot spot should not be blackened because it needs pickling before blackening, and cracks often occur in hot spot after pickling and blackening.
                          

　　直線導軌采用整體淬火方法，利用馬氏體陽變過程中存在的相變超塑性效應，實施熱壓定型淬火加反向預彎夾正回火相配合的處理方法可獲得良好的減少變形效果。已采用此法成批處理出完全合格的零件。實踐證明，此工藝方法是穩定、可靠的。

　　Linear guideway adopts whole quenching method. By utilizing the transformation superplasticity effect in martensite positive transformation process, the combination of hot pressing quenching and reverse pre-bending clip normalizing and tempering can achieve good deformation reduction effect. Completely qualified parts have been processed in batches by this method. Practice has proved that the process is stable and reliable.