消耗量较少而占用资金巨大，对生产安全也很重要，即A类、B类备件的易耗性

The consumption is small and the capital is huge, and it is also very important to production safety. That is, the consumable scores of A and B spare parts are relatively low; and the critical score or economic score of some B spare parts is comparable to A Class spare parts are equivalent, but the scores of other factors that affect the classification of spare parts are somewhat different from those of Class A spare parts. Therefore, in the usual spare parts management, there are such as key Class B spare parts and expensive Class B spare parts. Enterprises are managing this When class spare parts are often managed like Class A spare parts. Based on the similar characteristics of the consumption characteristics of B-type spare parts and A-type spare parts, this article discusses the consumption prediction models of A-type spare parts and B-type spare parts together. <br>Category A and Category B spare parts are generally cyclical parts, but also include a very small number of non-circular parts (non-repairable parts). Circulating parts can be used to establish a stochastic process model through its "use-repair-use" characteristics to obtain a consumption calculation model; non-cyclic parts can be used to establish a consumption calculation model through the random characteristics of their replacement

Less consumption and large amount of capital, is also important for production safety, that is, Class A, Class B spare parts are relatively low consumption points, and some category B spare parts key score or economic score is comparable to Class A spare parts, but because of the other factors affecting the classification of spare parts and Class A spare parts some difference, so in the usual spare parts management, there are key such as B spare parts and expensive category B, enterprises in the management of such spare parts, often like A-type management. Based on the consumption characteristics of Class B spare parts and similar characteristics of Class A spare parts, this paper discusses the consumption prediction model of Class A spare parts and Class B spare parts.<br>Category A and Class B spare parts are generally recycled parts, but also include a very small number of non-recycled parts (non-serviceable parts). Loop parts can be used to model consumption by building a random process model using its "one repair, one use" characteristic, and non-cycle parts can be used to model consumption calculations by random characteristics that are removed.

It is also very important for production safety, that is, the consumable scores of class A and class B spare parts are relatively low; In addition, the critical score or economic score of some class B spare parts is equivalent to that of class a spare parts, but the scores of other factors affecting the classification of spare parts are different from those of class a spare parts. Therefore, in the usual spare parts management, there are some key class B spare parts and expensive class B spare parts. When enterprises manage such spare parts, they should pay attention to the following aspects, Often, it will focus on management as class a spare parts. Based on the similar consumption characteristics of class B spare parts and class a spare parts, this paper discusses the consumption prediction model of class A and class B spare parts together.<br>Class A and class B spare parts are generally recycled parts, but they also include a very small number of non circulating parts (non repairable parts). The calculation model of consumption can be obtained by establishing the random process model of the circulation parts through its "use repair use" characteristics, and the consumption calculation model can be established by the random characteristics of the non circulation parts<br>