JPS56116852A - Free-cutting chromium-containing cast iron - Google Patents

Free-cutting chromium-containing cast iron

Info

Publication number
JPS56116852A
JPS56116852A JP1789780A JP1789780A JPS56116852A JP S56116852 A JPS56116852 A JP S56116852A JP 1789780 A JP1789780 A JP 1789780A JP 1789780 A JP1789780 A JP 1789780A JP S56116852 A JPS56116852 A JP S56116852A
Authority
JP
Japan
Prior art keywords
cast iron
free
graphite
chromium
cutting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP1789780A
Other languages
Japanese (ja)
Other versions
JPS5910989B2 (en
Inventor
Takeki Kobayashi
Norimitsu Kitajima
Kazuo Kinoshita
Katsuhiro Ichikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebara Corp
Original Assignee
Ebara Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ebara Corp filed Critical Ebara Corp
Priority to JP1789780A priority Critical patent/JPS5910989B2/en
Publication of JPS56116852A publication Critical patent/JPS56116852A/en
Publication of JPS5910989B2 publication Critical patent/JPS5910989B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

PURPOSE: To raise the sea water resistance and free-cutting property of a chromium- containing cast iron obtained by adding spherical graphite and deformed graphite to a cast iron whose C, Si, Mn, Cr, and Ti contents are designated.
CONSTITUTION: The free-cutting chromium-containing cast iron contains 2.8W 4.0wt% C, 2.5W4.5wt% Si, 0.1W1.0wt% Mn, 0.7W3.0wt% Cr, and 0.03W1.0wt% Ti, besides Fe and inevitable impurities. In the cast iron, the inclusion of Ti serves to suppress the formation of Cr carbide and white pig iron, small spherical graphite separates out almost uniformly in portions where cooling rate during the coagulation is fast, and deformed graphite of the same size as that of the spherical graphite and also of an adequately deformed shape is formed in portions where cooling rate is slow. Thus, the hardness of the cast iron can be lowered adequately, and the free cutting property and toughness of the cast iron can be secured and improved.
COPYRIGHT: (C)1981,JPO&Japio
JP1789780A 1980-02-18 1980-02-18 Free-cutting chromium-containing cast iron Expired JPS5910989B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1789780A JPS5910989B2 (en) 1980-02-18 1980-02-18 Free-cutting chromium-containing cast iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1789780A JPS5910989B2 (en) 1980-02-18 1980-02-18 Free-cutting chromium-containing cast iron

Publications (2)

Publication Number Publication Date
JPS56116852A true JPS56116852A (en) 1981-09-12
JPS5910989B2 JPS5910989B2 (en) 1984-03-13

Family

ID=11956516

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1789780A Expired JPS5910989B2 (en) 1980-02-18 1980-02-18 Free-cutting chromium-containing cast iron

Country Status (1)

Country Link
JP (1) JPS5910989B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6046350A (en) * 1983-08-25 1985-03-13 Otsuka Chem Co Ltd Alloyed cast iron
JPS62131731A (en) * 1985-12-03 1987-06-15 Hitachi Ltd Rotor of rotary electric equipment
US4861395A (en) * 1984-06-22 1989-08-29 Ebara Corporation Method of using machine parts made of austenitic cast iron having resistance to stress corrosion cracking in contact with salt water

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6046350A (en) * 1983-08-25 1985-03-13 Otsuka Chem Co Ltd Alloyed cast iron
JPH0565579B2 (en) * 1983-08-25 1993-09-20 Otsuka Kagaku Kk
US4861395A (en) * 1984-06-22 1989-08-29 Ebara Corporation Method of using machine parts made of austenitic cast iron having resistance to stress corrosion cracking in contact with salt water
JPS62131731A (en) * 1985-12-03 1987-06-15 Hitachi Ltd Rotor of rotary electric equipment

Also Published As

Publication number Publication date
JPS5910989B2 (en) 1984-03-13

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