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1. 发明专利

JPS6073032A ALUMINUM ALLOY-MADE CYLINDER HEAD CASTING 失效
公开(公告)号：JPS6073032A
公开(公告)日：1985-04-25
申请号：JP18236583
申请日：1983-09-29
申请人： MITSUBISHI MOTORS CORP
发明人： IWATA NORISHIGE , HOUJIYOU NOBUYOSHI , MORIMUNE FUMIO , TOGASHI TAKAKAZU
IPC分类号： B22D19/08 , F02F1/24 , F02F1/38 , F02F7/00
摘要： PURPOSE:To secure such a casting as being excellent in castability and heat fatigue strength, by forming a partial cylinder head from an aluminum alloy- made fusion welding body being heterogeneous with each other. CONSTITUTION:A portion inclusive of a fire contact surface on a cylinder head is made up of a muturally heterogeneous, aluminum alloy-made fusion welding body being formed into such a casting construction as being small in silicon or iron content in a chemical component as compared with other casting parts. With this constitution, a required part alone can be made up into an optional casting composition being excellent in fatigue strength against heat. And, such a casting as being solidified in fusion welding as one body that makes the other part into molten metal formation excellent in inexpensiveness and castability.

2. 发明专利

JPS5989722A HEAT TREATMENT OF CRANK SHAFT 失效
公开(公告)号：JPS5989722A
公开(公告)日：1984-05-24
申请号：JP19851582
申请日：1982-11-12
申请人： MITSUBISHI MOTORS CORP
发明人： HOUJIYOU NOBUYOSHI , TANAKA ICHIROU , HARINE MAKOTO
IPC分类号： F16C3/06 , B23K26/00 , C21D9/30
摘要： PURPOSE:To prevent effectively the fatigue failure of the 1st and the 2nd fillet parts of a crank shaft by hardening fixed ranges of the shaft including the fillet parts. CONSTITUTION:A pin 6 is eccentrically connected to a journal 4 with an arm 5 in-between, and they are united to one body to form a crank shaft 3. The semicircular range E-A-F7 of the 1st fillet part 1 formed at a joint between the journal 4 and the arm 5 and the semicircular range G-B-H8 of the 2nd fillet part 2 formed at a joint between the arm 5 and the pin 6 are hardened with laser beams, electron beams, arc or the like. Thus, ranges of about 90 deg. before and behind both ends A, B of the shortest straight line connecting the fillet parts 1, 2 in the circumferential direction are hardened, and the fatigue strength of the parts is improved.

3. 发明专利

JPS5923119A Connecting rod of die casting alumnum alloy 失效
标题翻译：连接铝合金的连接棒
公开(公告)号：JPS5923119A
公开(公告)日：1984-02-06
申请号：JP13429282
申请日：1982-07-30
申请人： Mitsubishi Motors Corp , Ryobi Ltd
发明人： TAKAHASHI YOUSUKE , YANO MASARU , AKIMOTO TAKEMI , HOUJIYOU NOBUYOSHI , SAKAMOTO KIYOAKI
IPC分类号： F16C7/00 , B22D17/00 , F16C7/02
CPC分类号： F16C7/023
摘要： PURPOSE:To obtain a light and rigid connecting rod having good dimensional accurcy, by using a heat-treatable aluminum alloy, molding the aluminum alloy to a uniform thin-walled casting by a heat-treatable casting process, and heat- treating the mold by T6-treatment and the like. CONSTITUTION:A heat-treatable aluminum alloy is molded by a non-porous oxygen die casting, and then is processed to T6-treatment of 500 deg.CX3hr water cooling 180 deg.CX8hr to obtain a thickness of 2-5mm. and a maximum tensile strength. On the basis of the above, a connecting rod 1 is formed in such a manner that its thickness be in the range of 3-5mm. and a larger bearing portion 3 is scraped out along the R formed at its one end to be in uniform thickness, with a substantially central portion of a connecting member 4 formed in a combined E shape in cross-section. As a result, the connecting rod may obtain a necessary and sufficient strength irrespective of use of an aluminum alloy, thereby achieving a light-weight engine.
摘要翻译：目的：为了获得具有良好尺寸精度的轻质刚性连杆，通过使用可热处理的铝合金，通过可热处理的铸造工艺将铝合金模制成均匀的薄壁铸件，并且通过 T6治疗等。构成：通过无孔氧压模铸造可热处理的铝合金，然后在180℃×8小时的500℃×3小时水冷却下进行T6处理，得到厚度为2-5mm。和最大拉伸强度。基于上述，连杆1的厚度形成为3-5mm的范围。并且沿着形成在其一端的R被刮出较大的轴承部分3以使其具有均匀的厚度，连接件4的大致中心部分以横截面形成为E形。结果，连接杆可以获得必要且足够的强度，而不管使用铝合金，从而实现轻型发动机。

4. 发明专利

JPS60230935A METHOD FOR HARDENING WHITE PIG IRON 失效
公开(公告)号：JPS60230935A
公开(公告)日：1985-11-16
申请号：JP8577684
申请日：1984-04-27
申请人： MITSUBISHI MOTORS CORP
发明人： HOUJIYOU NOBUYOSHI , KAKEFUDA MASAHIKO , IMAI MINORU
IPC分类号： C21D5/00 , B23K35/30 , C21D5/04 , C21D9/30
摘要： PURPOSE:To quicken the diffusion rate to the remelted layer of a base material and to form easily a uniform alloy chilled layer at cast surface by using a filler material in which a specified m.p. lowering element is combined with cementite stabilizing element or matrix strengthening element. CONSTITUTION:The filler material consisting of a wire material 2, etc. in which the m.p. lowering element such as B, Si, P, Be is contained in steel or nonferrous metal, etc. contg. cementite stabilizing or matrix strengthening element is attached to the sliding surface of the base material of a cam 1, etc. of a camshaft. Said shaft is preheated, the sliding surface of the cam 1 and the material 2 are melted simultaneously using a TIG3, etc., and white pig iron hardening treatment is performed. After cooling said material as it is, a chill hardened layer alpha and a heat effected layer beta are formed at the sliding surface of the cam 1. By the white pig iron hardening method, the filler material is molten thoroughly into base material, and the uniform chill structure is formed.

5. 发明专利

JPS60153412A INTERNAL-COMBUSTION ENGINE 失效
公开(公告)号：JPS60153412A
公开(公告)日：1985-08-12
申请号：JP705384
申请日：1984-01-20
申请人： MITSUBISHI MOTORS CORP
发明人： HOUJIYOU NOBUYOSHI
IPC分类号： F01L7/02
摘要： PURPOSE:To improve following property during high-speed operation and expand opening area of a valve from the start of opening by adopting a rotary type for intake and exhaust valves. CONSTITUTION:A cylinder head is provided with, in parallel to a crankshaft, an air intake cylinder hole and an exhaust cylinder hole, while an air intake port and an exhaust port joined to a combustion chamber communicate with said holes. An air intake pipe 4a and an exhaust pipe 4b are arranged in the air intake cylinder hole and the exhaust cylinder hole so as to be rotated synchronously with the crankshaft. Seals 9a, 9b, 10a, 10b are provided on peripheral edge parts of opening holes 5a, 5b of the air intake pipe 4a, exhaust pipe 4b, each cylinder boundary part, and between both end parts of the pipes and the cylinder head. By expanding the shape of the opening holes 5a, 5b so as to be expanded in the width of the advancing side in the direction of rotation, opening area of the valve at the start of opening can be expanded.

6. 发明专利

JPS6030569A PRODUCTION OF CYLINDER HEAD 失效
公开(公告)号：JPS6030569A
公开(公告)日：1985-02-16
申请号：JP13888883
申请日：1983-07-29
申请人： MITSUBISHI MOTORS CORP
发明人： HOUJIYOU NOBUYOSHI , MORIMUNE FUMIO , IMAI MINORU , TANABE RIKUTAROU , OOTA HARUMICHI
IPC分类号： B22D15/02 , B22D21/00 , B22D25/02 , B22D27/04
摘要： PURPOSE:To extend the life of a cylinder head in casting said cylinder head by cooling quickly the molten metal in contact with the surfaces between the adjacent holes of the surface to be exposed to fire at a specific cooling rate to decrease the porosity and crystal grain size thereof thereby improving the refractoriness in said parts. CONSTITUTION:The surface of the molding sand between the intake and exhaust holes 3, 4 of the surface 2 of a cylinder head 1 to be exposed to fire and between the holes 5 of the auxiliary combustion mouthpieces of a diesel engine is cooled by oil-circulating coolers 11-14 to cool quickly the molten metal in contact therewith at a cooling rate of about >=1 deg.C. The casting structure in the quickly cooled part is decreased in the porosity and crystal grain size, by which the heat resistance is improved and thermal cracking is prevented. The life of the cylinder head is thus extended.

7. 发明专利

JPS60165315A METHOD FOR HARDENING WHITE PIG IRON 失效
公开(公告)号：JPS60165315A
公开(公告)日：1985-08-28
申请号：JP1973784
申请日：1984-02-06
申请人： MITSUBISHI MOTORS CORP
发明人： KAKEFUDA MASAHIKO , HARINE MAKOTO , IMAI MINORU , KAWAI SHIGEO , HOUJIYOU NOBUYOSHI , ASANO KENICHI , SASAKI MASAJI
IPC分类号： C23C26/00 , C21D5/00 , C21D9/30
摘要： PURPOSE:To stably form a chill hardened layer based on cementite, in hardening the spacific surface of a cast iron member by chilling, by melting a filler material containing a cementite stabilizing element in the surface to be hardened of the cast iron member after preheating before cooling said member. CONSTITUTION:In forming a surface having high hardness and excellent abrasion resistance such as the slide surface of cast iron parts, the cast iron member 1 is preheated to 150-600 deg.C. Next, a filler material 2 containg a while pig iron forming promotor selected from B, Te, Bi, Cr, Mo, Ni and Ti is placed on the surface to be hardened of said member and the cast iron surface is melted along with the filler material 2 by a TIG welding apparatus 3 to contain the above mentioned white pig iron forming promotor in an eutectic state before cooling. By this method, a chill hardened layer alpha is formed to the surface and the hardness thereof is remarkably enhanced to enhance abrasion resistance.

8. 发明专利

JPS57181758A CASTING METHOD FOR CAM SHAFT 失效
公开(公告)号：JPS57181758A
公开(公告)日：1982-11-09
申请号：JP6628081
申请日：1981-04-30
申请人： MITSUBISHI MOTORS CORP
发明人： SAKAMOTO KIYOAKI , HOUJIYOU NOBUYOSHI , IMAI MINORU
IPC分类号： B22D19/00 , B22D19/16
摘要： PURPOSE:To produce a cam shaft having stem parts of good machinability and cam parts of high hardness by interposing cylindrical partition plates in the spaces of the stem parts and the spaces of cam parts of a sand mold to part these respectively and casting molten metals of different components simultaneously therein. CONSTITUTION:A stem part space 12, a journal part space 13 and a cam part space 14 are parted to two by means of partition plates 20 of an elliptical cylindrical shape having projections 19. The molten cast iron from a main feed line 17 passes through a supply line 15 and flows into the space 12 and the space 13, whereby the stem part and journal part of good workability are formed. On the other hand, the molten cast iron passing through an another supply path 16 is mixed with metallic components of, for example, Cr, Mo, Ni, etc. in an addition chamber 18, and these are cast into the space 14, whereby the hard cam part is formed. After the casting, the parts projecting from the side end faces of the cam parts of the plates 20 are cut off simultaneously with the finish machining of the stem parts, etc. Thereby, the cam shaft is cast easily and quickly.

9. 发明专利

JPS53149114A STAINLESS STEEL RESISTANT TO CORROSION BY ENGINE EXHAUST GAS 失效
公开(公告)号：JPS53149114A
公开(公告)日：1978-12-26
申请号：JP6519877
申请日：1977-06-01
申请人： MITSUBISHI MOTORS CORP
发明人： IWATA NORISHIGE , HOUJIYOU NOBUYOSHI , ASANO KENICHI , YAMASHITA TADAO
IPC分类号： C22C38/00 , C22C38/40

10. 发明专利

JPS6046962A SINTERING PART 失效
公开(公告)号：JPS6046962A
公开(公告)日：1985-03-14
申请号：JP15265883
申请日：1983-08-22
申请人： MITSUBISHI MOTORS CORP
发明人： HOUJIYOU NOBUYOSHI , ASANO KENICHI
IPC分类号： B22F1/00 , B22F1/02 , C04B35/00 , C04B35/628 , C22C1/05

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