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1. 发明专利

JPH04305353A METHOD FOR CASTING BERYLLIUM-COPPER ALLOY 失效
公开(公告)号：JPH04305353A
公开(公告)日：1992-10-28
申请号：JP8914391
申请日：1991-03-29
申请人： NGK INSULATORS LTD
发明人： SUZUKI KATSUMI , TAKAHARA HIDEKI
IPC分类号： B22D21/00 , B22D27/20 , C22C1/02 , C22C9/00
摘要： PURPOSE:To provide a casting method for beryllium-copper alloy capable of making crystal grains fine through a simple method and reducing internal defects. CONSTITUTION:In casting beryllium-copper alloy wherein a content of beryllium is 0.2-2.0wt.% after it is cast, pure copper is added in beryllium-copper mother alloy having the content of beryllium exceeding the content of beryllium in cast beryllium copper alloy to manufacture molten raw material and after 0.05-0.5wt. parts of titanium is added to 100wt. parts of this molten material, the obtd. material is melted and cast as beryllium-copper alloy having above the composition.

2. 发明专利

JP2503119B2 失效
公开(公告)号：JP2503119B2
公开(公告)日：1996-06-05
申请号：JP8914391
申请日：1991-03-29
申请人： NGK INSULATORS LTD
发明人： SUZUKI KATSUMI , TAKAHARA HIDEKI
IPC分类号： B22D21/00 , B22D27/20 , C22C1/02 , C22C9/00

3. 发明专利

JPS63143247A CASTING METHOD 失效
公开(公告)号：JPS63143247A
公开(公告)日：1988-06-15
申请号：JP28976186
申请日：1986-12-06
申请人： NGK INSULATORS LTD
发明人： ITO MORIAKI , TAKAHARA HIDEKI , MIZUNO SHINJI
IPC分类号： C22F1/08 , C22C9/00 , C22F1/00
摘要： PURPOSE:To obtain a casting having nearly uniform satisfactory hardness and satisfactory dimensional accuracy by casting a molten age hardening alloy, holding the cast alloy at a specified temp. for a specified time during cooling, quenching the cast alloy and age-hardening it. CONSTITUTION:A molten age hardening alloy is poured into a casting mold and cast. The cast alloy is soaked by holding at 650-850 deg.C for 0.5-10hr during cooling and it is released from the mold, quenched and age-hardened. By this method, the structure is homogenized and a casting having nearly uniform hardness and high dimensional accuracy is obtd. A Be-Cu alloy consisting of 1.5-3.0wt% Be, 0.2-1.0wt% Co,

4. 发明专利

JPH04285155A MANUFACTURE OF MEMBER CONSISTING OF AGE HARDENING COPPER ALLOY 失效
公开(公告)号：JPH04285155A
公开(公告)日：1992-10-09
申请号：JP7367691
申请日：1991-03-14
申请人： NGK INSULATORS LTD
发明人： TAKAHARA HIDEKI
IPC分类号： B21L15/00 , C22C9/00 , C23C14/06
摘要： PURPOSE:To manufacture a member excellent in wear resistance at a contact part subjected to impact or loads by vapor depositing an age hardening copper allay member having a prescribed shape with titanium nitride under specified conditions and forming a specified film thickness. CONSTITUTION:For example, an age hardening alloy consisting of a beryllium copper allay or the like is formed into a tool such as chisels, scrapers and cutting pliers. The main body 1 of the above tool is subjected to pretreatment such as alkali cleaning and is thereafter vapor-deposited with titanium nitride. As for the vapor-depositing conditions, the beryllium copper allay is subjected to age hardening at 300 to 500 deg.C for 2 to 10hr, and as the atmosphere of the above treatment, an vacuum one of about 10 Torr is preferably used. At this time, the thickness of the titanium nitride is regulated to 2 to 15mum, and a vapor-deposited film 2 having a required film thickness is formed at the tip part particularly subjected to loads. In this way, a safety tool for explosion proof use improved in the wear resistance of the contact part can be obtd.

5. 发明专利

JPS63149063A CASTING APPARATUS 失效
公开(公告)号：JPS63149063A
公开(公告)日：1988-06-21
申请号：JP29347586
申请日：1986-12-11
申请人： NGK INSULATORS LTD
发明人： ITO MORIAKI , TAKAHARA HIDEKI
IPC分类号： B22D18/04
摘要： PURPOSE:To cast castings having different size under good energy efficiency by setting an inner cylinder having penetrating hole at upper part on a bottom plate of high pressure vessel to set a mold and casting under high pressure after closing the high pressure vessel while pouring molten metal in the inner cylinder. CONSTITUTION:The lower half part 1b of high pressure vessel 1 is laid on the bottom part 1c through a packing on the bottom plate 1c, the mold 3 having the prescribed shape and the inner cylinder 4 having the same cylindrical shape as the shape of mold 3 are set. Next, after pouring the molten metal 8 in the inner cylinder 4, the upper half part 1a of high pressure vessel 1 is laid on the lower half part 1b through a packing 6a, flange part 4a and packing 6b, to tightly close by clamping the die. Next, high pressure nitrogen gas is supplied through the high pressure gas supplying hole 2 and the inner part of high pressure vessel 1 is made to high pressure condition, to execute the pressurizing solidification. Then, the inner and outer pressure of inner cylinder 4 are become to the same by the through hole 7 of inner cylinder 4. In this way, even in case the shape of mold 3 is changed, as the inner cylinder 4 can prepare corresponding to the mold 3, the using quantity of molten metal may be reduced, and the energy efficiency is good.

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