Global patent index - EP 0798395 B1

EP 0798395 B1 2000-07-12 - Heat insulating alloy steel and die casting machine parts

Title (en)

Heat insulating alloy steel and die casting machine parts

Title (de)

Wärmeisolierender legierter Stahl und Teile für eine Druckgiessmaschine

Title (fr)

Acier allié et isolante thermique, et pièces pour un dispositif de couler sous pression

Publication

EP 0798395 B1 (EN)

Application

EP 97302103 A

Priority

  • JP 7388396 A
  • JP 7388496 A

Abstract (en)

[origin: EP0798395A2] A heat insulating alloy steel contains 0.1 to 5.0 wt.% of C, 3.0 to 7.0 wt.% of Si, 5.0 to 18 wt.% of Ni, 0.5 to 8.0 wt.% of Cr, optionally at least one of less than 2.0 wt.% or less of Mn, 2.0 wt.% or less of Al and 2.0 wt.% of Mo, and the balance essentially of Fe. This heat insulating steel has a matrix metal structure with 30 % or more area ratio of a martensite phase. Further, a die casting machine part such as an injection sleeve or a pouring port bushing, having a surface making contact with an Al based molten metal, is made of a Fe base alloy containing 0.1 to 1.5 wt.% of C, 5.0 to 40 wt.% of Ni and 0.5 to 10 wt.% of at least one carbide forming element from: Cr, Mo, W, V, Nb, Ta, Ti and Zr. Such machine part comprises a surface layer portion including the surface making contact with the Al basedmolten metal, formed therein with a high density carbide layer as a dissolution resistance barrier. <IMAGE>

IPC 1-7 (main, further and additional classification)

C22C 38/34; B22D 17/22

IPC 8 full level (invention and additional information)

B22D 17/20 (2006.01); B22D 17/22 (2006.01); C22C 38/40 (2006.01)

CPC (invention and additional information)

C22C 38/40 (2013.01); B22D 17/2023 (2013.01); B22D 17/203 (2013.01); B22D 17/2209 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

EP 0798395 A2 19971001; EP 0798395 A3 19971203; EP 0798395 B1 20000712; DE 69702468 D1 20000817; DE 69702468 T2 20010308

INPADOC legal status

2016-08-31 [PGFP IT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: IT

- Ref Legal Event Code: PGFP

- Payment date: 20160324

- Year of fee payment: 20

2016-05-31 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: GB

- Ref Legal Event Code: PGFP

- Payment date: 20160323

- Year of fee payment: 20

2016-05-31 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FR

- Ref Legal Event Code: PGFP

- Payment date: 20160208

- Year of fee payment: 20

2016-04-29 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Ref Legal Event Code: PGFP

- Payment date: 20160322

- Year of fee payment: 20

2016-02-08 [REG FR PLFP] FEE PAYMENT

- Ref Country Code: FR

- Ref Legal Event Code: PLFP

- Year of fee payment: 20

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

- Ref Legal Event Code: IF02

2001-06-27 [26N] NO OPPOSITION FILED

- Ref Legal Event Code: 26N

2000-10-03 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: BIANCHETTI - BRACCO - MINOJA S.R.L.

- Ref Legal Event Code: ITF

2000-08-18 [ET] FR: TRANSLATION FILED

- Ref Legal Event Code: ET

2000-08-17 [REF] CORRESPONDS TO:

- Ref Legal Event Code: REF

- Ref Document Number: 69702468

- Country of Ref Document: DE

- Date of Ref Document: 2000-08-17

2000-07-12 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB IT

1998-07-08 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 19980522

1997-12-03 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB IT

1997-10-01 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19970423

1997-10-01 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB IT