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1. 发明专利

JPS63286240A CUTTING METHOD FOR POLYOLEFIN RESIN FOAMING BODY 失效
公开(公告)号：JPS63286240A
公开(公告)日：1988-11-22
申请号：JP11908487
申请日：1987-05-18
申请人： MITSUBISHI HEAVY IND LTD , JAPAN STYRENE PAPER CORP
发明人： KADOI JUN , YOKOTE HIROMI , NAGANUMA SHIZUKA , KAI TOSHIO , KUWABARA HIDEKI , HASHIBA MASAHIRO , NAITO MASATO
IPC分类号： B22C7/02
摘要： PURPOSE:To obtain the resin foaming body having smooth cutting face and good surface roughness by cutting the polyolefin resin foaming body of a polyethylene resin, polypropylene resin, etc., at the rotary speed more than the specified value on the relative speed of the foaming body and a cutter. CONSTITUTION:A polyolefin resin foaming body is cut at the rotary speed more than the relative speed of 300m/min of this foaming body and a cutter. When the polyolefin resin foaming body is cut by the cutter rotating at high speed, the deformation of the foaming particle itself is checked and ruptured (cut), hence no tear due to the peeling of the grain boundary is generated. The model of a polyolefin resin foaming body having smooth cutting face and good surface roughness can therefore be formed and the surface roughness of a casting is improved.

2. 发明专利

JPH06246426A METHOD FOR CASTING WHILE STIRRING FEEDER HEAD 失效
公开(公告)号：JPH06246426A
公开(公告)日：1994-09-06
申请号：JP3761593
申请日：1993-02-26
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAI TOSHIO , HIRATA ISAO , YOKOTE HIROMI , MAI TOSHIFUMI , SAKAI RYUICHI
IPC分类号： B22D27/20
摘要： PURPOSE:To manufacture a steel casting having high quality in a low cost by giving the specific velocity of rotary stirring with a ceramic-made stirring blade till the end stage of solidification in a feeder head part in molten metal at the time of casting with a sand mold. CONSTITUTION:The used material of the stirring blade 9 and a shaft 10, is made the ceramic having heat resistance. Further, the number of revolution of the stirring blade 9 is executed at the largest stirring effect of 80-120rpm. By using such a stirring blade, the stirring is executed till the end stage of the solidification. Related to the stirring time, while continuously measuring rotary torque of the stirring blade 9 when this rotary torque lowers, i.e., when the viscosity resistance of the molten steel 100 increases, the stirring blade 9 is pulled up. In this result, shrinkage hole in the feeder head part 7 is reduced and the development of the casting defect, such as blow hole can effectively be prevented and the drastic improvement of the yield and the quality can be obtd.

3. 发明专利

JPS6440149A POURING METHOD IN TWIN BELT TYPE CONTINUOUS CASTING EQUIPMENT 失效
公开(公告)号：JPS6440149A
公开(公告)日：1989-02-10
申请号：JP19436487
申请日：1987-08-05
申请人： MITSUBISHI HEAVY IND LTD
发明人： ITANO SHIGEO , YOKOTE HIROMI , AKITA HIDEKI , YAMANE TAKASHI , NISHIMURA OSAMU
IPC分类号： B22D11/06 , B22D11/10 , B22D11/103
摘要： PURPOSE:To prevent development of solidified phenomenon of molten metal between belts and outside wall of a nozzle and nozzle clogging phenomenon by arranging a refractory in gap between mold pouring metal surface at space between one pair of belts and a tundish. CONSTITUTION:The molten metal in a ladle 20 is introduced to a tundish nozzles 12, 12' through a tundish 13 and flowed out on surface of inclined plates 11, 11' from a notching part 12a, 12a' at lower end of the nozzles 12, 12'. This molten metal flowed out is flowed out is flowed against the refractory plate 10 on the inclined plates 11, 11' while spreading the molten metal to layer-state toward width direction of a slab on the inclined plates 11, 11'. After being brought into contact with the refractory plate 10, the molten metal is dropped along both surface thereof and introduced to the pouring surface. The flow of the molten metal along both surface of the refractory plate 10 becomes laminar flow, and uniform pouring of the molten metal is executed to the width direction of the pouring surface 8. Further, as the refractory surface 10 is submerged into the pouring surface 8 at some depth, the casting preventing spattering of the molten metal is executed.

4. 发明专利

JPS6018281A PRODUCTION OF CRANK CASE FOR V-ENGINE 失效
公开(公告)号：JPS6018281A
公开(公告)日：1985-01-30
申请号：JP12625283
申请日：1983-07-13
申请人： MITSUBISHI HEAVY IND LTD
发明人： NAKAMURA YUUICHI , ICHIKAWA KUNINOBU , YOKOTE HIROMI , NAKAISHI YOSHISAO
IPC分类号： F02F7/00 , B23K9/00 , F02B75/22 , B23K9/225
摘要： PURPOSE:To obtain a product having less casting defects with smaller man-hour for welding by casting a crank case body which is opened in the upper part of the space part and welding a separately manufactured top plate and intermediate plate to said open part thereby covering the crank case body. CONSTITUTION:A crank case 1 body which is opened in the upper part of the space part is cast with a construction in which the space part including an air feed chamber 1a, water chamber 1b, etc. is provided from above to the central part sandwiched by the right and left banks 10, 11 of the case 1. A top surface plate 2 made of a steel is full circumferentially welded to the upper side of the chamber 1a and an intermediate plate 3 made of a steel as a partition for the chambers 1a, 1b is similarly welded to the base metal of the case 1. Since the plates 2, 3 parts are opened according to the above-mentioned method, a substantially large riser is installed just above the partition wall of the case 1 and the generation of a shrinkage cavity is prevented in the stage of casting.

5. 发明专利

JPH0413548B2 失效
公开(公告)号：JPH0413548B2
公开(公告)日：1992-03-10
申请号：JP11557684
申请日：1984-06-07
申请人： MITSUBISHI HEAVY IND LTD
发明人： NAKAMURA JUICHI , ICHIKAWA KUNINOBU , YOKOTE HIROMI , NAKAISHI KITO
IPC分类号： F02B77/13 , F02B75/22 , F02F7/00

6. 发明专利

JPH01266941A FACING AGENT FOR LOST FOAM PATTERN 失效
公开(公告)号：JPH01266941A
公开(公告)日：1989-10-24
申请号：JP9565888
申请日：1988-04-20
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAI TOSHIO , YOKOTE HIROMI
IPC分类号： B22C3/00 , B22C9/04
摘要： PURPOSE:To improve the casting quality and the dimensional accuracy by using the specific facing agent having high strength and high permeability under using fused silica as aggregate. CONSTITUTION:The facing agent 2 for lost foam pattern 10 uses the fused silica as the aggregate and is made to 20-60 kgf/cm dry breaking resistant strength and 200-600 the permeability after coating to the pattern. Therefore, us the permeability is high, gas generated from the pattern 10 is rapidly discharged to the air through the mold. Further, as it has high strength characteristic, it has the equal strength as the strength needed to the mold and against deformation of the thin casting, it can be sufficiently kept up with that. Further, in order to make the specific permeability of the facing agent, the fused silica is used as the aggregate of the facing agent 2 and the grain size thereof is adjusted.

7. 发明专利

JPS6453738A TWIN/BELT TYPE CONTINUOUS CASTING DEVICE 失效
公开(公告)号：JPS6453738A
公开(公告)日：1989-03-01
申请号：JP21026887
申请日：1987-08-26
申请人： MITSUBISHI HEAVY IND LTD
发明人： ITANO SHIGEO , YOKOTE HIROMI , NISHIMURA OSAMU
IPC分类号： B22D11/06
摘要： PURPOSE:To obtain a cast billet having no defect by equipping with the refractory pouring plate having the flat lower part extending downwards between the upper part curved along a top roll and a pair of belts, and the pouring nozzle opening onto the curved face of the upper part thereof. CONSTITUTION:The molten metal from a tundish 6 is flowed out on to a refractory pouring plate 10 from its notch part 13 via a pouring nozzle 11 to form the continuous film flow 12 flowing to the flat part of the lower part with spreading in the width direction. The pouring plate running along a top roll 3' guides a molten metal flow by a piece of a plate, so no turbulent flow of molten metal is caused nor biting any bubble, etc., and an uniform solidified cell is formed and the casting difficult to generate a defect can be executed. Due to the pouring plate 10 being of one piece plate, the structure is easy to release the thermal stress and the thickness can be thinned, hence the gap C of both belts is reduced and a thin slab can be obtd. by continuous casting.

8. 发明专利

JPS61103666A Manufacture of composite roll 失效
标题翻译：复合滚筒的制造
公开(公告)号：JPS61103666A
公开(公告)日：1986-05-22
申请号：JP22223784
申请日：1984-10-24
申请人： Mitsubishi Heavy Ind Ltd
发明人： NAGANUMA SHIZUKA , YOKOTE HIROMI , KADOI JUN , KAI TOSHIO
IPC分类号： B22D19/16
摘要： PURPOSE: To obtain a composite roll of a high quality by forming a joint surface of a material to be cast-in to an uneven shape, placing it in a cylindrical one body metallic mold, preheating it in a non-oxidizing atmosphere, and thereafter, pouring an pressing a cast-in material, cooling it with water, and widening a contact area of the material to be cast-in to join it completely.
CONSTITUTION: Since a molten metal pressurizing system by a plunger 11 is adopted, a deposition phenomenon of a boundary part of a material to be cast-in 4 and a cast-in material is accelerated, they are joined completely, and a high quality roll can be manufactured, and also the yield of the molten metal is improved. Also, it is executed in a non-oxidizing atmosphere without using a surface treating agent for the joint surface, therefore, a care of a gas defect or an inclusion of the joint surface is dissolved. Moreover, since the joint surface of the material to be cast-in 4 is formed to an uneven shape 21, the contact area is widened, and this roll can be applied as a high load roll.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过将待铸造的材料的接合面形成为不均匀的形状，将其放置在圆筒状的单体金属模具中，在非氧化性气氛中进行预热，得到高质量的复合辊倾倒一个浇注材料，用水冷却，并加宽待铸造的材料的接触面积，以使其完全接合。构成：由于采用通过柱塞11的熔融金属加压系统，因此加入材料的边界部分和铸造材料的沉积现象加速，完全接合，并且高质量的辊能够提高熔融金属的收率。另外，在不使用表面处理剂的情况下，在非氧化性气氛中进行接合面的处理，因此能够溶解气体缺陷或包含接合面。此外，由于待铸造材料4的接合面形成为凹凸形状21，所以接触面积变宽，该辊可以作为高负荷辊施加。

9. 发明专利

JPH0446670B2 失效
公开(公告)号：JPH0446670B2
公开(公告)日：1992-07-30
申请号：JP12625283
申请日：1983-07-13
申请人： MITSUBISHI HEAVY IND LTD
发明人： NAKAMURA JUICHI , ICHIKAWA KUNINOBU , YOKOTE HIROMI , NAKAISHI KITO
IPC分类号： F02F7/00 , B23K9/00 , F02B75/22

10. 发明专利

JPS63144845A PRODUCTION OF HOLLOW CASTING 失效
公开(公告)号：JPS63144845A
公开(公告)日：1988-06-17
申请号：JP29159586
申请日：1986-12-09
申请人： MITSUBISHI HEAVY IND LTD
发明人： KADOI JUN , YOKOTE HIROMI , YAMANE TAKASHI
IPC分类号： B22D7/04
摘要： PURPOSE:To improve the workability of a hollow casting and to reduce the cost thereof by preheating a metallic mold core having the coefft. of thermal expansion larger than the coefft. of thermal expansion of a casting material to a prescribed temp., casting a molten metal into the mold and allowing the mold core to shrink more largely than the casting, then removing the core. CONSTITUTION:The casting mold consisting of master mold 1 and the metallic mold core 2 is provided on a mold stool 4 and the melt of a ductile cast iron is cast from a sprue 3 into the mold. SUS304 having the coefft. of thermal expansion larger than the coefft. of thermal expansion of the molten metal material is used for the core 2 and the core 2 is preheated to the prescribed temp. satisfying the equation T1alpha1>T2alpha2, where alpha1, alpha2 are respectively the coeffts. of thermal expansion of the casting and the metallic mold core, and T1, T2 are respectively the average temps. of the casting and the metallic mold core when the solidification is completed. The mold is cooled down to an ordinary temp. after casting to allow the core 2 to shrink more largely than the casting, then the core is removed. The workability of the hollow casting is thereby improved and the cost is reduced.

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