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1. 发明专利

JP2001353651A PROPELLER MANUFACTURING DEVICE, AND PROPELLER MANUFACTURING METHOD 失效
公开(公告)号：JP2001353651A
公开(公告)日：2001-12-25
申请号：JP2000176499
申请日：2000-06-13
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUJITA KEN , FUJIWARA NAOYUKI , HIURA RYOTA , WADA AKIO
IPC分类号： B23Q15/02 , B24B17/06 , B24B19/14 , B24B49/12
摘要： PROBLEM TO BE SOLVED: To provide a grinding device and a grinding method for automatically grinding a propeller, and especially, provide a grinding device and a grinding method for automatically grinding a propeller of high quality. SOLUTION: This propeller manufacturing device manufactures a propeller by grinding a subject body 9. This propeller manufacturing device is provided with form measuring sensors 5, 61, and 81 to measure a first three-dimensional form, and grinding means 2, 3, 4, 6, and 7 to grind the subject body 9. The grinding means 2, 3, 4, 6, and 7 grinds the subject body 9 till the first three- dimensional form of the subject body 9 becomes substantially the same as a second three-dimensional form of the propeller based on the first three- dimensional form measured by the form measuring sensors 5, 61, and 81, and three-dimensional data 10 indicating the second three-dimensional form of the propeller.

2. 发明专利

JPH01186238A MOLDING METHOD 失效
公开(公告)号：JPH01186238A
公开(公告)日：1989-07-25
申请号：JP1047088
申请日：1988-01-20
申请人： MITSUBISHI HEAVY IND LTD
发明人： WADA AKIO , NOHARA SABURO
IPC分类号： B22C9/02
摘要： PURPOSE:To prevent gas defect in a steel casting by using sand specifying blending ratio of furan reconditioned sand and new sand and adding rates of resin and hardening agent as back sand and chromite sand as facing sand in a mold and molding. CONSTITUTION:As the back sand, which does not directly contact with molten steel, the sand, in which the furan reconditioned sand and the new sand are mixed to 1:1 ratio and the adding rate of the resin is made to >=2% of the sand wt. and the adding rate of the hardening agent is made to >=30% of resin wt., is used. Further, as the facing sand, which directly contacts with the molten steel, the chromite/alkali phenol sand is used. By this method, the facing sand is instantaneously sintered and film is formed between the molten steel and the back sand and gas generating in the back sand is discharged to out of the mold without any contacting with the molten steel.

3. 发明专利

JPS63278637A PRODUCTION OF CORE SAND MOLD 失效
公开(公告)号：JPS63278637A
公开(公告)日：1988-11-16
申请号：JP10976787
申请日：1987-05-07
申请人： MITSUBISHI HEAVY IND LTD
发明人： WADA AKIO
IPC分类号： B22C9/10 , B22C1/10 , B22C1/22
摘要： PURPOSE:To obtain a core sand mold having suitable strength and excellent collapsibility after casting by blending the specific rate of alkali phenol resin as binder to sand and the specific rate of ester as curing agent to the resin and drying at the specific temp. after molding. CONSTITUTION:A cavity 3 is formed by inserting the core sand mold 2 by the alkali phenol molding process in a master sand mold 1 produced by furon resin molding process. Then, at the time of producing the core sand mold 2, after blending 0.9-1.9wt.% the alkali phenol resin to the sand as the binder and 15-31wt.% the ester to the above resin as the curing agent, it is dried at

4. 发明专利

JPS63194933A DEAERATING METHOD UNDER VACUUM 失效
公开(公告)号：JPS63194933A
公开(公告)日：1988-08-12
申请号：JP2754687
申请日：1987-02-09
申请人： MITSUBISHI HEAVY IND LTD
发明人： WADA AKIO
IPC分类号： B29B15/10 , B29C70/06
摘要： PURPOSE:To perfectly deaerate without help of worker by a method wherein felts are arranged on the peripheral edge of a model, to which a base material is laminated, after that, the whole surface is covered with a film so as to suck bubbles in the base material from suction ports provided on the molded through hoses. CONSTITUTION:Resin-impregnated fibrous base material 3 is laminated to a model 2. A proper number of suction ports 4 are provided on the peripheral top surface of the model 2 at the predetermined intervals so as to be connected through hoses 10 to a vacuum pump arranged outside. In addition, at the end part on the model side of each suction port 4, a felt 5 of proper shape and size is arranged. The above-mentioned whole matter is covered with a film 6, the peripheral edge of which is hermetically fixed to the side end face of the model 2 by means of keep plates 7 and tap bolts 8. During deaeration, excess resin and bubbles in the resin-impregnated fibrous base material 3 are sucked out of the suction ports 4 by means of a vacuum pump. The felt 5 prevents the resin from travelling through the suction port 4 to the vacuum pump and also prevents the film 6 from clogging the suction port 4.

5. 发明专利

JPS6223925A METHOD FOR PREVENTING QUENCHING CRACK 失效
公开(公告)号：JPS6223925A
公开(公告)日：1987-01-31
申请号：JP16286685
申请日：1985-07-25
申请人： MITSUBISHI HEAVY IND LTD
发明人： WADA AKIO
IPC分类号： C21D1/18 , C21D1/70
摘要： PURPOSE:To effectively prevent the quenching crack and overhardening of a product of a material in which the quenching crack is readily caused by filling molding sand for a CO2 process into a part of the product in which the quenching crack is probably caused and by quenching the product. CONSTITUTION:When the product of a material in which the quenching crack is readily caused is quenched, the molding sand for a CO2 process consisting of about 100pts.wt. silica sand and about 7pts.wt. water glass is filled into a part of the product in which the quenching crack is probably caused or a part not to be overhardened. The part may be coated with the molding sand. After the molding sand is solidified by blowing gaseous CO2, the product is water-quenched. Thus, the quenching crack and overhardening of the product are provented.

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