GB191209512A - Improved Process for the Manufacture of Armor Plates. - Google Patents

Improved Process for the Manufacture of Armor Plates.

Info

Publication number
GB191209512A
GB191209512A GB191209512DA GB191209512A GB 191209512 A GB191209512 A GB 191209512A GB 191209512D A GB191209512D A GB 191209512DA GB 191209512 A GB191209512 A GB 191209512A
Authority
GB
United Kingdom
Prior art keywords
heated
quenched
oil
water
cooled
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.)
Expired
Application number
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.)
ANONIMA ITALIANA GIO ANSALDO A
Original Assignee
ANONIMA ITALIANA GIO ANSALDO A
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 ANONIMA ITALIANA GIO ANSALDO A filed Critical ANONIMA ITALIANA GIO ANSALDO A
Application granted granted Critical
Publication of GB191209512A publication Critical patent/GB191209512A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/42—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for armour plate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

9512. Soc. Anon. Italiana Gio Ansaldo, Armstrong, & Co. May 3, 1911, [Convention date]. Hardening; cementation.-Armour-plates are rolled or forged from a steel inget, annealed, subjected to a series of thermal treatments, cemented, and subjected to a further series of thermal treatments. The ingot is heated to about 450‹ C. for several hours and is then heated slowly to about 1,200‹ C. and rolled or forged and annealed. The plate is then heated to about 600‹ C., quenched in oil or warm water, heated to 750-780‹ C., upset, cooled to about 200‹ C. in oil or boiling water, heated to about 630‹ C., upset, cooled in air, and then preferably machined on the face. It is then cemented during about 60 hours at 960-1,000‹ C., after which it is allowed to cool to 780-800‹ C. and further cooled in oil to 300-400‹ C. It is next heated to 625-640‹ C., quenched in water, heated to 750-780‹ C., bent, reheated to 750-780‹ C., quenched in oil, heated to about 635‹ C., and quenched in water, the quenching at 635‹ C. being repeated if the fracture at this stage is not fibrous. Finally, the plate is hardened differentially, the face being heated to 850‹ C. and the back in contact with sand to about 600‹ C.
GB191209512D 1911-05-03 1912-04-22 Improved Process for the Manufacture of Armor Plates. Expired GB191209512A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT191209512X 1911-05-03

Publications (1)

Publication Number Publication Date
GB191209512A true GB191209512A (en) 1912-10-10

Family

ID=32375485

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191209512D Expired GB191209512A (en) 1911-05-03 1912-04-22 Improved Process for the Manufacture of Armor Plates.

Country Status (1)

Country Link
GB (1) GB191209512A (en)

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