Durability Design of Coated Circular Saw Knife for Hot Chamber Cutting Stainless Steel in Nuclear Industry

Biwen Li; Jun Chen; Yunqiao Dong; Jiantao Gu; Hongzhe Peng

doi:10.54097/8tx4rk78

Authors

Biwen Li
Jun Chen
Yunqiao Dong
Jiantao Gu
Hongzhe Peng

DOI:

https://doi.org/10.54097/8tx4rk78

Keywords:

Nuclear Industry Hot Chamber, Coated Circular Saw Knife, Dry Cutting Durability Model, Durability Design, List Calculation Method

Abstract

In order to accurately investigate the changes of structure and properties of test reactor materials and components under irradiation service conditions, higher geometric accuracy and surface state requirements are put forward for the interception and cutting process of metal samples prepared by hot chamber in nuclear industry. Taking the AlCrN coated circular saw knife and the TiN thin coated circular saw knife which improve the cutting edge sharpness and the wear resistance of the substrate as the research objects, and taking the M2 circular saw knife of the same specification as the reference, the durability tests of dry cutting 316L stainless steel with two factors and two levels are carried out to verify the feasibility of the improvement of structural parameters and the long life of dry cutting at high temperature. A method of maximum durability reduction based on the variation curve of flank wear zone and hot chamber processing conditions is proposed. In this paper, a high precision tool hot chamber durability model in the form of selective subset equation is established, and the limitations of the traditional methods for obtaining the highest productivity and lowest cost durability of power function form equations are analyzed. A list calculation method for obtaining the formal durability of non-power function equations with stronger adaptability and engineering practicability is put forward, and the substitutability of the calculation results is further analyzed. The research results provide an effective method and means for the hot chamber to scientifically and reasonably formulate the tool durability to adapt to the production plan.

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