How to Select Ceramic Cutting Tools?

Ceramic cutting tools are mainly used for high-speed cutting of ordinary steel and cast iron which cannot be machined by cemented carbide cutting tools and machining of difficult to machine materials.

Each kind of ceramic cutting tool has its specific processing range.

1. Selection of ceramic cutting tools

(1) Alumina based ceramic tools are suitable for processing all kinds of steel and cast iron, as well as copper alloy, graphite, engineering plastics and composite materials.

Steel processing is better than silicon nitride based ceramics.

However, because its matrix contains Al element, it has a large affinity in processing aluminum and aluminum alloy, and the tool will have a large bond wear and diffusion wear, so it is not suitable for processing aluminum alloy.

Similarly, the “black” ceramic cutting tools of Al2O3/TiC and Al2O3/ (W, Ti) C contain Al and Ti elements, which have great affinity in processing aluminum and aluminum alloys and titanium and titanium alloys, so they are not suitable for processing aluminum, titanium and their alloys.

SiCw particles or whiskers SiCw toughened Al2O3 ceramic tools show excellent cutting performance when machining nickel base superalloys, pure nickel and high nickel alloys.

However, when machining steel parts, SiCw is easy to react with Fe in the steel under high cutting temperature, which reduces the original hardness and wear resistance of SiCw whiskers, weakens the bonding strength between whiskers and matrix, and causes sharp wear of tool materials.

Therefore, Al2O3 ceramic tools toughened by whisker SiCw are not suitable for machining steel and cast iron.

(2) The fracture toughness and thermal cracking resistance of Si3N4 based ceramic tools are higher than those of alumina based ceramic tools, which are widely used in the machining of cast iron and nickel based alloys.

The Si3N4 based ceramic tool mainly produces abrasive wear when cutting cast iron at high speed, and chemical wear when cutting carbon steel at high speed.

Due to the large affinity between Si3N4 and Fe and the mutual diffusion between Si and Fe, Si3N4 based ceramic tools are not suitable for high-speed cutting of iron, carbon steel and other materials.

Si3N4 based ceramic tools are most suitable for high-speed machining of cast iron and superalloys.

Sialon ceramic cutting tools are most suitable for processing all kinds of cast iron (gray cast iron, nodular cast iron, chilled cast iron, high alloy wear-resistant cast iron, etc.) and nickel base superalloys.

They are not suitable for processing steel.

The key points for correct use of ceramic cutting tools are:

(1) The accuracy, rigidity, vibration of the machine tool and the clamping firmness of the tool to prevent damage and edge collapse.

(2) According to the properties and characteristics of the processed materials, the types and brands of ceramic materials shall be correctly selected.

(3) In order to exert the compressive strength of ceramic tool materials, ceramic tools generally adopt negative rake angle (-5 ° ~ -12 °).

(4) In order to utilize the heat resistance and wear resistance of ceramic tool materials, larger cutting parameters can be used as much as possible.

2. Grade and performance of ceramic cutting tools from various manufacturers

See table 2-38 for ceramic tool grade of each manufacturer.

Table 2-38 ceramic tool grade of various manufacturers

Purpose

Classification

Tungaloy

Mitsubishi

Sumitomo

Sandvik croman

Kyocera

Japanese special ceramics

Kenner metal

Ingersoll

Teguk

Widia

Walter

Senla Tianshi

cast iron

K01

LX11

LX21

 

NB90SNB9OM

CC6190CC650

KA30

HC1

KYK10

 

AW20

CW2015

 

CTN3105

A65

HW2

KY1615

AB30

CTS3105

KT66

SE1

 

AS10

 

PT600M

HC2

 

 

 

K10

CX710FX105

 

 

CC6190CC650

A65

HCI

KYK10

IN7ON

AB30

CW2015

WSN10

CTN3105

KT66

HW2

KY1320

AS10

CW5025

CTM3110

A66N

PT600M

SEI

KYK25I

 

 

CTI3105

 

WAI

KYK3500

 

 

CTN3110

 

WA5

 

 

 

CTS3105

K20

FX105CX710

 

 

CC6190

KS6000

SP9

KYK25I

IN7ON

AS10

CW5025

WSN10

CTM3110

SXI

CTN310

SX6

KYK3500

 

SX9

 

K30

 

 

 

 

 

 

KYK3500

 

 

 

WSN10

 

Materials with difficulty in processing

S01

 

 

 

 

 

 

KY2100

 

 

 

WIS10

 

S10

WG300

 

WX120

CC670

CC6060

CF1

WAl

KYS25

 

AS20

CW3020

WIS10

WWS20

 

WA5

KY1540

SX9

KY2100

 

 

 

 

S20

 

 

 

 

 

 

KYS30

 

 

 

WIS10

WWS20

 

KY2100

KY1540

S30

 

 

 

 

 

 

KY4300

 

 

 

WWS20

 

High hardness material

H01

LX11

 

NB100C

CC6050CC650

A65

ZC4

KY4400

 

AW20

CW2015

 

CTS3105

KT66

ZC7

A66N

PT600M

 

KY1615

 

 

H10

WG300

 

NB100C

CC6050CC650

CC6190

A65

HC4

KY1615

 

AB2010

CW2015

 

CTS3105

KT66

HC7

 

AB20

A66N

PT600M

 

 

AB30

 

H20

 

 

 

 

 

 

 

 

 

 

WWS20

 

 

H30

 

 

 

 

 

 

KYS25

 

 

 

 

 

 

KY4300

Scroll to Top