铁谱技术产生于70年代，是目前广泛使用的油液监测技术。铁谱分析仪是利用高梯度、强磁场，将润滑剂中所包含的磨粒按其粒度大小有序地沉积下来，然后借助于其它各种分析方法对磨粒进行定性和定量分析的技术。
Ferrography technology was born in 70s and is widely used in oil monitoring technology. Ferrographic analyzer is a technique that uses high gradient and strong magnetic field to deposit the abrasive particles in lubricant according to their size in an orderly manner, and then makes qualitative and quantitative analysis of the abrasive particles by means of other analytical methods.
铁谱技术测定的内容包括：
The contents of Ferrography are as follows:
①磨粒的浓度和颗粒的大小，它们反映了机器磨损的严重程度。
(1) the concentration of abrasive particles and the size of particles reflect the severity of machine wear.
②磨粒的形貌，它反映了磨粒产生的原因和机理。
(2) the morphology of abrasive grains reflects the cause and mechanism of abrasive particles.
③磨粒的成份，它反映了磨粒产生的部位，即发生磨损的零件。
(3) the composition of abrasive particles, which reflects the location of abrasive particles, that is, wear parts.
通过对沉积磨粒的分析，可以掌握机器运行时的实际磨损情况，判断磨损的状态。
Through the analysis of the deposited abrasive particles, the actual wear situation of the machine can be grasped and the wear state can be judged.
铁谱分析的实质是根据润滑油中磨粒的形貌、尺寸、数量、成分的分析，识别磨损零件、磨损的类型及磨损的程度等。
The essence of ferrography analysis is to identify wear parts, wear types and wear degree according to the analysis of morphology, size, quantity and composition of abrasive particles in lubricating oil.
铁谱分析的仪器主要有直读铁谱仪和分析式铁谱仪。
The instruments for ferrography are mainly direct reading Ferrograph and analytical Ferrograph.