[go: up one dir, main page]

JPS5713115A - Production of tough and strong free-cutting ca cast steel - Google Patents

Production of tough and strong free-cutting ca cast steel

Info

Publication number
JPS5713115A
JPS5713115A JP8583180A JP8583180A JPS5713115A JP S5713115 A JPS5713115 A JP S5713115A JP 8583180 A JP8583180 A JP 8583180A JP 8583180 A JP8583180 A JP 8583180A JP S5713115 A JPS5713115 A JP S5713115A
Authority
JP
Japan
Prior art keywords
wire
molten metal
tough
cutting
production
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.)
Pending
Application number
JP8583180A
Other languages
Japanese (ja)
Inventor
Yoshio Ishihara
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.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP8583180A priority Critical patent/JPS5713115A/en
Publication of JPS5713115A publication Critical patent/JPS5713115A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE:To uniformly disperse Ca and considerably improve impact value and yield by inclining a Ca or Ca type wire at a specific angle to the perpendicular of molten metal level and adding the same into the molten metal at spcific rates of wire addition in a specific temp. range. CONSTITUTION:A Ca wire or Ca-Al wire 2 is disposed with 5-20 deg.C inclinations to the perpendicular 5 of the surface 3 of molten metal. Here, the temp. of the molten metal in a ladle 4 is kept at 1,530-1,670 deg.C, and the wire 2 is added into the molten metal at 10-200m/min rates of wire addition. As shown in B, Ca elutes into the ladle 4 over a wide range and disperses uniformly.
JP8583180A 1980-06-26 1980-06-26 Production of tough and strong free-cutting ca cast steel Pending JPS5713115A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8583180A JPS5713115A (en) 1980-06-26 1980-06-26 Production of tough and strong free-cutting ca cast steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8583180A JPS5713115A (en) 1980-06-26 1980-06-26 Production of tough and strong free-cutting ca cast steel

Publications (1)

Publication Number Publication Date
JPS5713115A true JPS5713115A (en) 1982-01-23

Family

ID=13869790

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8583180A Pending JPS5713115A (en) 1980-06-26 1980-06-26 Production of tough and strong free-cutting ca cast steel

Country Status (1)

Country Link
JP (1) JPS5713115A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59173992U (en) * 1983-05-09 1984-11-20 日本碍子株式会社 ceramic heater
EP0137618A2 (en) * 1983-08-12 1985-04-17 Pfizer Inc. Process and apparatus for adding calcium to a bath of molten ferrous material
JPS6159861U (en) * 1984-09-27 1986-04-22
KR100919019B1 (en) * 2002-12-13 2009-09-24 주식회사 포스코 Mini Mill Calcium Wire Cage Automatic Filling Device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5280202A (en) * 1975-12-27 1977-07-05 Nippon Steel Corp Preparation of sintered ore
JPS5339908A (en) * 1976-09-27 1978-04-12 Kawasaki Steel Co Method of adding alloying components to molten metal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5280202A (en) * 1975-12-27 1977-07-05 Nippon Steel Corp Preparation of sintered ore
JPS5339908A (en) * 1976-09-27 1978-04-12 Kawasaki Steel Co Method of adding alloying components to molten metal

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59173992U (en) * 1983-05-09 1984-11-20 日本碍子株式会社 ceramic heater
JPS6345760Y2 (en) * 1983-05-09 1988-11-28
EP0137618A2 (en) * 1983-08-12 1985-04-17 Pfizer Inc. Process and apparatus for adding calcium to a bath of molten ferrous material
JPS6159861U (en) * 1984-09-27 1986-04-22
JPH0234457Y2 (en) * 1984-09-27 1990-09-17
KR100919019B1 (en) * 2002-12-13 2009-09-24 주식회사 포스코 Mini Mill Calcium Wire Cage Automatic Filling Device

Similar Documents

Publication Publication Date Title
JPS5713115A (en) Production of tough and strong free-cutting ca cast steel
JPS5760061A (en) Stainless steel
JPS56146857A (en) Ferritic stainless steel with superior rust and acid resistances
JPS53108813A (en) Manufacture of non-calcined ore briquettes
JPS55104459A (en) Spring stainless steel with superior producibility
JPS5585655A (en) Steel for plastic molding metal mold
JPS5792163A (en) Chain with superior toughness over 70kg/mm2 tensile strength and its manufacture
JPS57116753A (en) High carbon steel wire rod with high toughness
JPS5719366A (en) Machine structural steel with superior cold forgeability and machinability
Kitsunai Effect of Microstructure on Fatigue Crack Growth Mechanisms in High Strength Steel.(Relationship Between Crack Growth Rate and Prior Austenite Grain Size)
SU619536A1 (en) Alloy for deoxydizing and alloying steel
JPS5531151A (en) Oxygen blowing method in continuous steel making
JPS56116852A (en) Free-cutting chromium-containing cast iron
JPS57134543A (en) Low alloy carburizing steel with high toughness
JPS5741347A (en) Low-sulfur boron-containing steel with superior hardenability
JPS5269805A (en) Dipping body formolten metal
EP0138382A3 (en) Improvements in or relating to electrical steels
JPS57177920A (en) Enhancing method for toughness of weld metal
Bruk Preparation of Steel Making Hot Ladles
JPS52102817A (en) Production of high tensile cast iron
JPS5658950A (en) Heat treating roller
JPS5665964A (en) Rapidly carburizing steel
Yadav et al. Hot metal quality--users view point
JPS5259014A (en) Treatment material of molten iron
Pollock A-L to Receive$ 5 M in Lawsuit