JPS6434512A - Liner for hot extrusion and its manufacture - Google Patents

Liner for hot extrusion and its manufacture

Info

Publication number
JPS6434512A
JPS6434512A JP19242987A JP19242987A JPS6434512A JP S6434512 A JPS6434512 A JP S6434512A JP 19242987 A JP19242987 A JP 19242987A JP 19242987 A JP19242987 A JP 19242987A JP S6434512 A JPS6434512 A JP S6434512A
Authority
JP
Japan
Prior art keywords
liner
casting
hip
treated
ingot
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
JP19242987A
Other languages
Japanese (ja)
Inventor
Masaharu Fukuma
Kenji Ogata
Hideki Nakamura
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.)
Proterial Ltd
Original Assignee
Hitachi Metals 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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP19242987A priority Critical patent/JPS6434512A/en
Publication of JPS6434512A publication Critical patent/JPS6434512A/en
Pending legal-status Critical Current

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  • Extrusion Of Metal (AREA)

Abstract

PURPOSE:To extend the service life of a liner and to reduce manufacturing cost by forming a chilled casting layer on the inner surface of the liner. CONSTITUTION:From a molten steel of a super heat resisting alloy or an austenitic hot tool steel, a hollow ingot is formed by casting. At this time, the ingot is HIP treated to make the cast structure compact under high temp. and high pressure, further, machined to ascertain the chilling of the inner surface of the liner by a test piece. Then, heat treatment and finish machining are performed and the liner 3 is shrinkage fitted inside a tire 2 of a container 1. Because the chilled layer 3a is formed on the surface of inner diameter of the liner 3 by casting and HIP treatment, the service life of the liner 3 is extended. Further, because the liner is HIP treated, heat treated and finishing worked from the cast hollow ingot, the overall manufacturing cost is reduced.
JP19242987A 1987-07-31 1987-07-31 Liner for hot extrusion and its manufacture Pending JPS6434512A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19242987A JPS6434512A (en) 1987-07-31 1987-07-31 Liner for hot extrusion and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19242987A JPS6434512A (en) 1987-07-31 1987-07-31 Liner for hot extrusion and its manufacture

Publications (1)

Publication Number Publication Date
JPS6434512A true JPS6434512A (en) 1989-02-06

Family

ID=16291165

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19242987A Pending JPS6434512A (en) 1987-07-31 1987-07-31 Liner for hot extrusion and its manufacture

Country Status (1)

Country Link
JP (1) JPS6434512A (en)

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