专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPS6087964A PRODUCTION OF COMPOSITE METALLIC PIPE 失效
公开(公告)号：JPS6087964A
公开(公告)日：1985-05-17
申请号：JP19522683
申请日：1983-10-20
申请人： NIPPON KOKAN KK
发明人： YAMAMOTO KEITAROU , MIYAHARA SHINOBU , MUGITA MIKIO , SUZUKI MAKOTO
IPC分类号： B22D13/02 , B22D19/16
摘要： PURPOSE:To manufacture a thoroughly bonded uniform composite metallic pipe in pouring a molten metal of a different material into the pipe material in a horizontal centrifugal casting mold by determining the inside surface temp. of the pipe material and the temp. of the molten metal to be poured by the equation for starting melting of the pipe material and casting centrifugally the molten metal by the combination of both temps. within the specified range. CONSTITUTION:A pipe material 11 is inserted into a horizontal centrifugal casting mold 1 by matching the centerlines and both ends are sealed by side gates 3, 4. The inside surface of the material 11 is heated to a prescribed temp. by a heater and a molten metal 12 of a different material is poured at a prescribed temp. from a tundish 7 into the mold, by which the molten metal is centrifugally cast. The heating temp. T'C for the inside surface of the pipe material 11 and the temp. T'M of the molten metal to be poured are determined from the relation (equation I ) for starting melting of the pipe material. The two materials weld to each other in the molten state of the boundary in the combination of T'C and T'M and are bonded by diffusion in the combination of T'C-T'C -200 deg.C and T'M and the combination of T'C and T'M-T'M-60 deg.C. The two materials are thoroughly metallurgically bound and the composite metallic pipe having uniform and high quality is economically produced.

2. 发明专利

JPS6076263A PRODUCTION OF COMPOSITE METALLIC MATERIAL 失效
公开(公告)号：JPS6076263A
公开(公告)日：1985-04-30
申请号：JP18319083
申请日：1983-10-03
申请人： NIPPON KOKAN KK
发明人： YAMAMOTO KEITAROU , MIYAHARA SHINOBU , MUGITA MIKIO , SUZUKI MAKOTO
IPC分类号： B22D13/02 , B22D19/16
摘要： PURPOSE:To obtain a composite metallic material having a defectless boundary by supplying the 2nd molten steel which is subjected to temp. control before the 1st molten steel under centrifugal casting ends solidification to cast centrifugally a composite pipe, cutting the pipe in the axial line direction after cooling and straightening the cut pipe while hot to a flat plate. CONSTITUTION:A cylindrical horizontal casting mold 1 is rotated at a high speed and the 1st molten steel 11 consisting of a prescribed material is supplied into the mold and is centrifugally cast. The 2nd molten steel 12 of a different kind is supplied at 30-120 deg.C degree of superheating and at the temp. higher by >=30 deg.C than the m.p. of the steel 1 into the mold and is centrifugally cast before the steel 11 ends solidification. The resultant composite steel pipe 13 is cooled in the mold 1. The pipe is taken out when the temp. decreases to Ar3 or 800- 1,100 deg.C and is cut along the straight direction in the axial line direction. The cut pipe is heated to about 1,100-1,300 deg.C and is straightened to a flat plate shape with a hot straightener. The flat plate-shaped composite slab is hot rolled and the plate- or coil-shaped composite steel plate is obtd.

3. 发明专利

JPS54163726A CONTINUOUS SLAG CASTING 失效
公开(公告)号：JPS54163726A
公开(公告)日：1979-12-26
申请号：JP7224178
申请日：1978-06-16
申请人： NIPPON KOKAN KK
发明人： KOTANINO NORIYUKI , YAMAMOTO KEITAROU , ISHIKAWA MASARU , SERA TAIZOU
IPC分类号： B22D11/16 , B22D11/00 , B22D11/04

4. 发明专利

JPS5899164A PLATE REFRACTORIES FOR SLIDING NOZZLE 失效
公开(公告)号：JPS5899164A
公开(公告)日：1983-06-13
申请号：JP19694681
申请日：1981-12-09
申请人： NIPPON KOKAN KK , TOKYO YOGYO KK
发明人： YAMAMOTO KEITAROU , ITOU YUUICHI , MATSUNAGA TADASHI , TSUDA TAKAAKI
IPC分类号： C04B35/103 , B22D37/00 , B22D39/00 , B22D41/32 , C04B35/10

5. 发明专利

JPS5510312A CONTINUOUS CASTING METHOD OF STEEL 失效
公开(公告)号：JPS5510312A
公开(公告)日：1980-01-24
申请号：JP8211978
申请日：1978-07-07
申请人： NIPPON KOKAN KK
发明人： SHIRATANI YUUSUKE , UCHIDA SHIGETAKA , MASAOKA TOSHIO , TEJIMA TOSHIO , YAMAMOTO KEITAROU
IPC分类号： B22D11/10 , B22D11/11 , B22D11/112 , B22D11/116 , B22D11/117 , B22D11/118 , B22D11/14
摘要： PURPOSE:To reduce inclusions in products and reduce melting losses per molten steel of tundish by segmenting the tundish to plural receiving and tapping regions with the ingates of refractories having through-holes in the lower part and changing the receiving regions for every exchanging of ladles. CONSTITUTION:A tundish 10 is partitioned by ingates 11 having through-holes 12 in the lower part, by which it is segmented to a plurality of receiving regions 13a thru 13c which receive molten steel from a ladle 1 through an air sealed pipe 2 and tapping regions 14, 14a which tap the molten steel into molds 3, 3a through an immersion nozzle 15. When the molten steel is poured from the ladle 1 into the receiving region 13a,the molten steel reaches the tapping region 14 by passing the through-hole 12 of the ingate 11 or reaches the tapping region 14a by passing through the receiving regions 13b 13c. It is then poured into the molds 3, 3a by passing through the respective immersion nozzles 15, 15a. The height of the moltel steel level 16 is maintained by the through-hole 12. In the case of exchanging the ladle, the molten steel is poured into the receiving region 13b.

6. 发明专利

JPS54163728A PREVENTING BREAK OUT IN CONTINUOUS CASTING 失效
公开(公告)号：JPS54163728A
公开(公告)日：1979-12-26
申请号：JP7224378
申请日：1978-06-16
申请人： NIPPON KOKAN KK
发明人： MIYAHARA SHINOBU , TAKEDA SHIYUUHEI , YAMAMOTO KEITAROU , SERA TAIZOU , KAMISAKI AKIMASA
IPC分类号： B22D11/22 , B22D11/04 , B22D11/16

7. 发明专利

JPS5813465A PLATE BRICK FOR SLIDING OPENER 失效
公开(公告)号：JPS5813465A
公开(公告)日：1983-01-25
申请号：JP10930681
申请日：1981-07-15
申请人： TOKYO YOGYO KK , NIPPON KOKAN KK
发明人： USHIGOME SUSUMU , YOSHIDA TAKESHI , YAMAMOTO KEITAROU
IPC分类号： B22D41/32 , B22D37/00 , B22D41/28
摘要： PURPOSE:To provide a titled plate brick having considerably increased service times and high sliding performance by fitting and sticking a charging hole part which is formed beforehand of a refractory material having high erosion resistance to a plate brick body which is formed of a refractory material having high sliding and smoothing properties. CONSTITUTION:A stationary plate 3' which is the above-described plate brick is constituted of a stationary plate body 3'a and a charging hole part 3'b fitted and stuck to said body. The body 3'a is made by kneading, molding and calcining of the components consisting, by weight, of 40% coarse grains and 20% middle grains of sintered alumina, 20% fine grains of synthetic mullite, 20% powder of flake graphite, and 3% a phenolic resin. The part 3'b is made by kneading, molding, and calcining of the components consisting, by weight, for example, of 40% coarse grains and 20% middle grains and 35% fine powder of sintered alumina, and 5% clay. After the part 3'b is fitted and stuck to the body 3'a by using an inorg. adhesive agent (e.g.; sodium silicate), the sliding surface of the body 3'a is polished, whereby the plate brick for the intended sliding opener is obtained.

8. 发明专利

JPS5756151A Manufacture of killed steel free from segregation 失效
标题翻译：杀死钢铁的制造免于分离
公开(公告)号：JPS5756151A
公开(公告)日：1982-04-03
申请号：JP13059180
申请日：1980-09-22
申请人： Nippon Kokan Kk
发明人： TSUCHIDA YUTAKA , TEJIMA TOSHIO , MUGITA MIKIO , YAMAMOTO KEITAROU , TAMAI JIYUNZOU
IPC分类号： B22D7/00 , B22D27/20
摘要： PURPOSE: To prevent macrosegregation by inserting a prescribed amount of a cooling material in a prescribed shape into a mold rapidly a necessary time after molten steel having prescribed temperature is poured into the mold.
CONSTITUTION: Molten steel is so poured that the molten steel in a mold is 5°C higher than the starting temperature of solidification, and inclusions of the molten steel float and separate. After the separation is done enough, a cooling material which has nearly the same properties with the molten steel and is so sectioned that upper sectional area/lower sectional area ≤1 and 20W70% as long as the height of a steel ingot is inserted deeply and rapidly into the molten metal. In this case, the amount of the cooling material is so determined that total mean sectional area of cooling material/sectional area of steel ingot ≥5.6%. Consequently, the molten steel in the mold has more than one solidification starting point and the solidifiction is decentralized to prevent segregation.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：通过将规定温度的钢水浇注到模具中之后，将规定数量的规定形状的冷却材料插入模具中以防止宏观偏析。构成：浇铸钢水使模具中的钢水比凝固起始温度高5℃，钢水夹杂物分离。在足够分离之后，具有与钢水几乎相同的性质的冷却材料，并且被分割为上部截面积/下截面积<= 1和20-70％，只要钢锭的高度为深入和快速地插入熔融金属中。在这种情况下，冷却材料的量被确定为冷却材料的总平均截面积/钢锭截面积> = 5.6％。因此，模具中的钢水具有多于一个凝固起点，并且凝固分散以防止分离。

9. 发明专利

JPS5241129A SLIDE OPENING AND CLOSING DEVICE 失效
公开(公告)号：JPS5241129A
公开(公告)日：1977-03-30
申请号：JP11712575
申请日：1975-09-30
申请人： NIPPON KOKAN KK , TOKYO YOGYO KK
发明人： YAMAMOTO KEITAROU , MATSUDA YASUHIRO , TAKASHIMA HISASHI , SHIRAISHI IKUNOBU
IPC分类号： B22D41/08 , B22D41/00

10. 发明专利

JPS6072654A PRODUCTION OF COMPOSITE METALLIC PIPE 失效
公开(公告)号：JPS6072654A
公开(公告)日：1985-04-24
申请号：JP18082783
申请日：1983-09-30
申请人： NIPPON KOKAN KK
发明人： YAMAMOTO KEITAROU , MIYAHARA SHINOBU , MUGITA MIKIO , SUZUKI MAKOTO
IPC分类号： B22D13/02 , B22D19/16
摘要： PURPOSE:To bind metallurgically the interface between the inside and outside layers consisting of different materials and to obtain a composite metallic pipe having high quality by limiting the supply period of the 2nd molten metal to be supplied to the surface of the 1st molten metal under centrifugal casting and the temp. difference between the degree of overheating of the 2nd molten metal and the m.p. of the 1st molten metal. CONSTITUTION:The 1st molten steel 11 supplied into a horizontal casting mold 1 is centrifugally cast as a horizontal casting mold 1 rotates. The 2nd molten steel 12 which is supplied from the 2nd ladle 10 into the 2nd tundish 8 and is different in material quality from the 1st molten steel 11 is supplied onto the surface of the 1st molten steel 11 under centrifugal casting via an outflow spout 8a during the time since the surface of the molten steel 11 starts solidifying until the solidification ends. the composite steel pipe is thus centrifugally cast. The supply temp. of the 2nd molten steel 12 onto the surface of the 1st molten steel 11 in this stage is made higher than the m.p. of the 1st steel 11 within a 30-120 deg.C range of the degree of overheating.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式