Cutting Performance of Reaming Alloy Gray Cast Iron HT250 Using Carbide, Cermet and CBN Reamers

Abstract:

Cutting performance of reaming alloy gray cast iron HT250 using carbide, cermet and CBN reamers was studied. Experiments were conducted under constant cutting parameters and cooling strategy. Tool life, hole diameter, spindle power, surface roughness and tool wear were analyzed. The hole diameter and spindle power would keep steady when reaming with carbide reamer after 400 holes to the tool life of 1050 holes. But holes diameter reduced and spindle power increased with the number of machined holes increasing during the whole tool life when using cermet or CBN reamer. The surface roughness Rz of the holes reamed by carbide reamer was within the tolerance, although it was worse than that reamed by cermet and CBN reamer. It can be summarized that the carbide was the most suitable material for reaming alloy gray cast iron because of the longest tool life, steady hole diameter and spindle power, qualified surface roughness. After machining, crater wear and clearance wear were produced on the cermet and CBN reamer, which were caused by abrasive wear. In addition, flaking and breakages appeared on the edge of cermet reamer, which were not found on CBN reamer. However, the clearance wear of carbide reamer was smaller than that of CBN reamer, and built up edge was found along the cutting edge.

• Periodical: Key Engineering Materials (Volume 764)
• Pages: 261-270
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.764.261
• Online since: February 2018
• Authors: X.K. Yang, Y.G. Wang, W.L. Ge, L. Chen, H. Ge
• Keywords: Alloy Gray Cast Iron HT250, Carbide, CBN, Cermet, Cutting Performance, Reamer

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