Tool Life and Wear Mechanism of Coated Si3N4 Ceramic Tools in Turning Grey Cast Iron

This paper presents results of the investigation of Si3N4 ceramic inserts with CVD coatings in turning grey cast iron. The high effectiveness of Si3N4 ceramic inserts with multi-layered coating in the finish turning of the grey irons was shown. It was established that at the heart of the wear mechanism of coated Si3N4 ceramic inserts there is a chain of relations cutting conditions loading fracture of coating сhipping of ceramic surface layer failure of tools. One of the important features of wear mechanism of these tools is the operational defects formed at the coating substrate interface.

Download Full-text

Wear Mechanism of CBN Inserts During Machining of Bimetal Aluminum-grey Cast Iron Engine Block

Procedia CIRP ◽

10.1016/j.procir.2013.06.087 ◽

2013 ◽

Vol 8 ◽

pp. 188-193 ◽

Cited By ~ 14

Author(s):

Amir Malakizadi ◽

Ibrahim Sadik ◽

Lars Nyborg

Keyword(s):

Cast Iron ◽

Wear Mechanism ◽

Grey Cast Iron ◽

Engine Block ◽

Grey Cast

Download Full-text

COMPARISON OF PERFORMANCE OF AUSTRIAN MADE SI3N4 – NITRIDE CERAMIC TOOLS USED TO MACHINE GREY CAST IRON WORK-PIECE MATERIALS

MM Science Journal ◽

10.17973/mmsj.2009_10_20091001 ◽

2009 ◽

Vol 2009 (03) ◽

pp. 142-145

Author(s):

J. Kovalcik ◽

J. Cuban

Keyword(s):

Cast Iron ◽

Grey Cast Iron ◽

Work Piece ◽

Ceramic Tools ◽

Iron Work ◽

Grey Cast

Download Full-text

Wear Mechanisms When Machining Grey Cast Iron with Ceramic Tools

Surface Engineering ◽

10.1179/sur.1987.3.3.211 ◽

1987 ◽

Vol 3 (3) ◽

pp. 211-225 ◽

Cited By ~ 4

Author(s):

G. Brandt ◽

M. Mikus ◽

Z. Senesan ◽

S. Hogmark

Keyword(s):

Cast Iron ◽

Wear Mechanisms ◽

Grey Cast Iron ◽

Ceramic Tools ◽

Grey Cast

Download Full-text

Investigation of Drilling Machinability of Compacted Graphite Iron under Dry and Minimum Quantity Lubrication (MQL)

Metals ◽

10.3390/met9101095 ◽

2019 ◽

Vol 9 (10) ◽

pp. 1095 ◽

Cited By ~ 2

Author(s):

Li ◽

Wu ◽

Kuzu ◽

Zhao ◽

Hong

Keyword(s):

Cast Iron ◽

Wear Mechanism ◽

Minimum Quantity Lubrication ◽

Grey Cast Iron ◽

Compressed Air ◽

Drilling Process ◽

Compacted Graphite Iron ◽

Machine Material ◽

Compacted Graphite ◽

Grey Cast

Compacted graphite iron (CGI), which is used as a potential material in the auto industry, is a hard-to-machine material for the different minor elements and for the geometry of graphite with grey cast iron. The machinability of CGI in the drilling process was investigated with a 4-mm diameter fine-grain carbide twist drill under four lubrication conditions, dry (no compressed air), dry (with compressed air), MQL 5 ml/h, and MQL 20 mL/h in this paper. The maximum flank wear, types of wear, and cutting loads were studied for identifying the wear mechanism in drilling of CGI. The tool life in the four experiments of CGI drilling is 639 holes, 2969 holes, 2948 holes, and 2685 holes, respectively. The results showed that the main wear mechanism in drilling of CGI is adhesion and abrasion. Carbon, which originates from the graphite of CGI, can improve the lubrication in the drilling process by comparing with MnS in drilling grey cast iron. The thrust force and torque are more than 1000 N and 150 N*cm after 2700 holes in CGI drilling. Drilling of CGI under dry conditions (with compressed air) and MQL 5 ml/h is feasible.

Download Full-text