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21. 发明专利

JPH1034595A MATERIAL FOR ELECTRIC HEATING CUTTER AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH1034595A
公开(公告)日：1998-02-10
申请号：JP21214396
申请日：1996-07-24
申请人： DAIDO STEEL CO LTD
发明人： YAMADA HIROSHI , YAMAGUCHI SHINJI
IPC分类号： B26D7/10
摘要： PROBLEM TO BE SOLVED: To improve wear resistance of a cutting edge and prolong the service life of a cutter by covering both surface of an intermetallic compound of Fe and Al at a central part, with Fe group electric heating material in material for an electric heating cutter for cutting resin or the like by electrically heating the cutter itself. SOLUTION: At the time of manufacturing material for electric heating cutter, an Al plate is held between two plates formed of Fe group electric heating material or Ni group electric heating material, pressure-welded by rolling and then heated to produce an intermetallic compound of Fe or Ni and Al. Both surface of the intermetallic compound of Fe and Al at the central part are thus covered with Fe or Ni group electric heating material so as to obtain material suitable for cutter material hard at a part to be a cutting edge and having toughness on the whole. Fe group electric heating material to be used is an alloy or the like composed of Cr: 15-20wt.%, Al: 2-5wt.% and Fe for the rest, and Ni group electric heating material is an alloy or the like composed of Cr: 15-25wt.% and Ni for the rest.

22. 发明专利

JPH1033847A CUTLERY MATERIAL HAVING EXCELLENT CORROSION RESISTANCE AND ITS PRODUCTION 失效
公开(公告)号：JPH1033847A
公开(公告)日：1998-02-10
申请号：JP21214596
申请日：1996-07-24
申请人： DAIDO STEEL CO LTD
发明人： YAMADA HIROSHI , YAMAGUCHI SHINJI
IPC分类号： B26B9/00 , B21D53/60 , C22C1/00
摘要： PROBLEM TO BE SOLVED: To increase the hardness in the part of a blade edge and to improve the corrosion resistance over the entire part by coating both surfaces of an intermetallic compd. of Ni and Al, such as NiAl.Ni3 Al, in the central part with a precipitation hardening type Ni alloy. SOLUTION: The intermetallic compd. of Ni and Al is formed by holding an Al sheet or Al alloy sheet between precipitation hardening type Ni alloy sheets and subjecting these sheets to rolling and press welding, then heating the same. This compd. is subjected to precipitation hardening, by which the cutlery consisting of the materials treated in such a manner is formed. The precipitation hardening type Ni alloy includes an Ni alloy consisting, by weight % (hereafter the same), 2% Be and the balance Ni, Ni alloy consisting of 2% Be, 3% Al and the balance Ni, etc. The Al alloy to be used includes an Al alloy consisting of 5% Cu and the balance Al, etc. The heating temp. for forming the intermetallic compd. of Ni and Al and subjecting the compd. to precipitation hardening is specified to 400 the 800 deg.C and in the case of the precipitation hardening type Ni alloy consisting of 2% B and the balance Ni, this temp. is specified to 400 to 650 deg.C.

23. 发明专利

JPH09102574A LEAD FRAME HAVING EXCELLENT RESIN ADHESIVENESS AND PUNCHABILITY AND ITS MANUFACTURE 失效
公开(公告)号：JPH09102574A
公开(公告)日：1997-04-15
申请号：JP28438295
申请日：1995-10-06
申请人： DAIDO STEEL CO LTD
发明人： YAMADA HIROSHI , YAMAGUCHI SHINJI
IPC分类号： C25D5/50 , H01L23/48 , H01L23/50
摘要： PROBLEM TO BE SOLVED: To obtain a lead frame having an excellent resin adhesiveness and punchability by providing a layer of a specific intermetallic compound on the surface of a thin plate of an Fe-Ni alloy. SOLUTION: After an ingot is obtained by melting a raw material composed of an Fe-Ni alloy, a plate is manufactured by blooming, hot-rolling, and annealing the ingot at about 1,100 deg.C and the surface of the plate is ground. Then a thin plate is obtained by repeatedly cold rolling and annealing the plate. Then one surface of the thin plate is coated with an Sn plated layer having a thickness of about 1μm by electroplating the surface with Sn by using an electroplating Sn bath. Thereafter, an intermetallic compound composed of Fe5 Sn3 , Fe3 Sn2 , FeSn, and FeSn2 is generated by diffusion-annealing the thin plate coated with the Sn plated layer. Therefore, a lead frame material which is improved in resin adhesiveness and punchability can be obtained.

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