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1. 发明专利

JPS52123928A METHOD OF MAKING EFFECTIVE DEGAS REFINING IN PROCESS OF DROPLET DEGAS VACUUM MOULDING METHOD OF MOLTEN METAL 失效
公开(公告)号：JPS52123928A
公开(公告)日：1977-10-18
申请号：JP4087676
申请日：1976-04-13
申请人： JAPAN STEEL WORKS LTD
发明人： HARA SADAO , IWANAMI YOSHIYUKI , OOSAKI SATORU , TANIGUCHI KOUZOU
IPC分类号： B22D18/06 , B22D23/00 , B22D27/20 , C21C7/10

2. 发明专利

JPS5699068A INGOT MAKING METHOD BY FEEDERRHEAD ARC HEATING UTILIZING MOLTEN SLAG 失效
公开(公告)号：JPS5699068A
公开(公告)日：1981-08-10
申请号：JP138780
申请日：1980-01-11
申请人： JAPAN STEEL WORKS LTD
发明人： HARA SADAO , TAKENOUCHI TOMOO , IWANAMI YOSHIYUKI , TANIGUCHI KOUZOU
IPC分类号： B22D27/06 , B22D7/10
摘要： PURPOSE:To prevent a break flaw system defective from occurring in a steel ingot bloom in a mold by adding molten slag to the surface of molten steel right after puring the molten steel in the mold and by arc-heating the molten slag by feeding current to an electrode. CONSTITUTION:On bed plate 7 on surface plate 8, mold 6 is mounted and on the upper internal surface of mold 6, refractory body 2 for feeder-head heat insulation is placed. In this mold 6, molten steel 1 is cast and onto part 1' of the feeder head, CaO-CaF2-Al2O3-SiO2 type molten slag 3 of a low oxygen potential is added. Over this molten slag 3, electrode 4 made of graphite, etc., is suspended and arc discharge with molten slag 3 is caused to heat slag 3 holding slag 3 molten. Since the temperature of feeder head 1 in contact with molten slag 3 never falls, no iron crystal is produced, and consequently a break flaw system defective due to the sinkage of iron crystal can be prevented from occurring in the steel ingot bloom.

3. 发明专利

JPS5597860A PRODUCTION OF COMPOSITE HOLLOW METAL CAST INGOT 失效
公开(公告)号：JPS5597860A
公开(公告)日：1980-07-25
申请号：JP294379
申请日：1979-01-17
申请人： JAPAN STEEL WORKS LTD
发明人： TANIGUCHI KOUZOU
IPC分类号： B22D18/04 , B22D7/02 , B22D7/04 , B22D18/00 , B22D19/00 , B22D19/16 , B22D23/00
摘要： PURPOSE:To economically produce the high grade composite hollow metal cast ingot for production of clad pipe by using a metal mold which has a dummy bar at the top end and a skirt made of refractories at the bottom end and subsequently forming the shells of dissimilar metals on the inside surface thereof. CONSTITUTION:Dissimilar metals, e.g., carbon steel 11 and stainless stell 12 are respectively received in ladles 13, 14 and these are installed on the turntable 15 in a tank 10. Next, the ladle 13 is installed right under a water-cooled metal mold 1 and this is moved upward to dip its refractory skirt 6 into molten metal 11 to push up the molten carbon steel 11 into the metal mold 1 and enclose the dummy bar 2, thereby forming the solidified shell 30 of the specified thickness on the inside surface of the metal mold 1. After this, the unsolidified molten steel is allowed to return into the ladle 13 and the ladle 13 is lowered. Thence, the ladle 14 is moved to right under the metal mold 1 and the operations similar to the above are performed to let the stainless steel 12 secure on the inside surface of the above-mentioned solidified shell 30, thereby forming the solidified shell 31 and obtaining the composite hollow metal ingot.

4. 发明专利

JPS58209464A PRODUCTION OF LAMINAR COMPOSITE METALLIC PLATE MATERIAL 失效
公开(公告)号：JPS58209464A
公开(公告)日：1983-12-06
申请号：JP8976482
申请日：1982-05-28
申请人： JAPAN STEEL WORKS LTD
发明人： IWANAMI YOSHIYUKI , TANIGUCHI KOUZOU , FUNAZAKI MITSUNORI , TAKENOUCHI TOMOO
IPC分类号： B22D18/04 , B22D19/00 , B22D19/04 , B22D27/00
摘要： PURPOSE:To produce a composite metallic plate material effectively and remarkably inexpensively by installing a metallic plate for insert material in the prescribed position in a casting mold, and substituting the inside of the casting mold, which is closed tightly except the riser part, with an inert gas then lifting the molten metal of an outside enveloping material into the casting mold from the ladle in the lower part of the casting mold through an immersion pipe. CONSTITUTION:An insert material 1 is set in the prescribed position in a pressure casting mold 3 made of graphite by a hanger 2, the inside surface of which is coated uniformly with an alumina base coating material. The top surface except the very small part of a riser 4 is closed tightly and the inside of the mold 3 is replaced with an inert gas such as Ar in accordance with an ordinary preparatory plan for pressure casting, whereafter prescribed molten metal 8 for the outside circumference is filled quickly by pressure casting in the cavity between the material 1 and the circumference of the casting mold. More specifically, a ladle 5 holding the metal 8 is set in a pressurizing tank 6, and while an immersion tube 7 is held immersed in the metal 8, the tank 6 is pressurized to force the metal 8 into the mold 3. The material which has completed solidification is rolled to a prescribed thickness and in the case of, for example, three layers, the outside metallic part of the circumference is cut, whereby the intended laminar composite metallic material is obtained.

5. 发明专利

JPS5581060A BONDING METHOD OF COPPER OR COPPER ALLOY AND STEEL 失效
公开(公告)号：JPS5581060A
公开(公告)日：1980-06-18
申请号：JP15364678
申请日：1978-12-14
申请人： JAPAN STEEL WORKS LTD
发明人： TANIGUCHI KOUZOU , YAMADA HITOHISA
IPC分类号： B22D19/00
摘要： PURPOSE:To prevent the coarsening and peeling of the crystal grains of lining metal by employing the heating temperature lower than before for the temperature of the steel lining metal at the place-pouring method and making the pouring temperature of mating material higher than before. CONSTITUTION:In the case of bonding copper or copper alloy by a place-pouring method, the temperature of steel liming metal at the place-pouring is made within the melting point +30 deg.C of copper or copper alloy being mating material. Or the pouring temperature of the mating material is made the melting point +100 deg.C or more of the mating material. In this way, the bonding method of copper or copper alloy to steel lining metal of freedom from peeling at the boundary faces of both and less entry of the mating material to the crystal grain boundaries of the lining metal may be obtained simply through adequate controlling of the temperatures of the lining metal and mating material.

6. 发明专利

JPS5575878A PRODUCTION OF COMPOSITE METAL BLANK 失效
公开(公告)号：JPS5575878A
公开(公告)日：1980-06-07
申请号：JP14970678
申请日：1978-12-05
申请人： JAPAN STEEL WORKS LTD
发明人： TANIGUCHI KOUZOU , FUJIWARA TAMIO , ICHINOMIYA YOSHIAKI
IPC分类号： B22D19/00
摘要： PURPOSE:To achieve the improvement in the adhesiveness and production yield of the composite material by applying plating for oxidation prevention on base metal surfaces, covering the same with atmosphere-oxygen-consuming material then pouring mating material through atmosphere controlling by burning. CONSTITUTION:Plating 2 such as Ni which is stable to oxidative atmosphere is applied on the base metal 1 surfaces of carbon steel, etc. and a frame 3 is mounted to the four sides of the mating face with mating material. Material such as chaff 4 which decreases the oxidation characteristic of the atmosphere when burnt is sprayed and a cover 5 is put on. After the base metal 1 of this state is soaked with a heating furnace or the like, mating material such as molten stainless steel is poured while the base metal 1 is being moved. After allowing the material to cool, the chaff 4 having deposited on the mating material surface is removed and the material is soaked and hot rolled, whereby the specified clad plate is obtained.

7. 发明专利

JPS54138822A PRODUCTION OF COMPOSITE METAL MATERIAL 失效
公开(公告)号：JPS54138822A
公开(公告)日：1979-10-27
申请号：JP4664278
申请日：1978-04-21
申请人： JAPAN STEEL WORKS LTD
发明人： SUZUKI KOREAKI , TANIGUCHI KOUZOU , ICHINOMIYA YOSHIAKI
IPC分类号： B22D19/00 , B23K20/00

8. 发明专利

JPS5577961A PRODUCTION OF HOLLOW METAL CAST INGOT 失效
公开(公告)号：JPS5577961A
公开(公告)日：1980-06-12
申请号：JP15195778
申请日：1978-12-11
申请人： JAPAN STEEL WORKS LTD
发明人： TANIGUCHI KOUZOU
IPC分类号： B22D18/04 , B22D7/04 , B22D18/06 , B22D23/00
摘要： PURPOSE:To produce the stable and economical hollow metal cast ingot by dipping the skirt portion made of refractories of mold into molten metal then sucking or pushing up the molten metal in the mold to form a solidified shell and reflowing unfrozen molten metal. CONSTITUTION:After the refractory skirt 2 at the bottom end of a metal mold 1 is dipped in molten metal 10, the inside of the metal mold 1 is immediately evacuated 7 to suck the metal 10 into the metal mold 1. At the top end of the metal 10 having been sucked, a dummy bar 8 is cast and at the same time the metal mold 1 is water-cooled to cause solidification in the lateral direction from its inside surface. After lapse of the specified time, the solidified shell 12 of the metal 10 is pulled by way of the metal mold 1 or dummy bar 8, by which the unsolidified molten metal 13 is returned into a holding ladle 11. On the other hand, the hollow blank which is closed at one end by the cast part of the dummy bar 8 is worked readily to pipe material with a suitable pipe making machine with said sealing part 14 being held attached or after it has been cut away. If a long-length blank is required, the molten metal is pushed up into the metal mold by making use of pressure, by which the solidified shell is formed.

9. 发明专利

JPS54138821A PRODUCTION OF COMPOSITE METAL ELEMENT 失效
公开(公告)号：JPS54138821A
公开(公告)日：1979-10-27
申请号：JP4664178
申请日：1978-04-21
申请人： JAPAN STEEL WORKS LTD
发明人： SUZUKI KOREAKI , TANIGUCHI KOUZOU , ICHINOMIYA YOSHIAKI
IPC分类号： B22D19/00 , B23K20/00

10. 发明专利

JPS5328522A METHOD OF ADDING ALLOY ELEMENT IN FLOWING DROP DEGASSING VACUUM CASTING PROCESS 失效
公开(公告)号：JPS5328522A
公开(公告)日：1978-03-16
申请号：JP10261576
申请日：1976-08-30
申请人： JAPAN STEEL WORKS LTD
发明人： HARA SADAO , IWANAMI YOSHIYUKI , FUKUMOTO MASARU , TANIGUCHI KOUZOU
IPC分类号： B22D18/06 , C21C7/10 , C22C1/06

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