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21. 发明专利

JPS59144582A Joining method of steel plate and penetrated copper pipe 失效
标题翻译：钢板和渗铜管的接合方法
公开(公告)号：JPS59144582A
公开(公告)日：1984-08-18
申请号：JP1731983
申请日：1983-02-07
申请人： Hitachi Ltd
发明人： MIHARA NAGAHARU , WATANABE SHIYOUEI , ICHIKAWA ISAO
IPC分类号： B23K9/028 , B23K9/23
CPC分类号： B23K9/23
摘要： PURPOSE:To improve the joining property on a copper pipe side and to form a good fillet shape in welding of the copper pipe penetrating through a steel plate by a nonconsumable electrode by preheating the part of the copper pipe near the weld zone having good heat conductivity with an arc and welding the weld zone with a filler wire fed to said zone. CONSTITUTION:A nonconsumable electrode 3 is first deviated as shown by a dotted line in the figure in the fillet welding of a copper pipe 2 penetrating through a steel plate 1 and the circumference of the pipe 2 is preheated with arc discharge. The electrode 3 is then set in a prescribed position and while a filler wire 4 is fed, the two members are welded. The build-up surface is then leveled off and the welding is completed. If the pipe 2 having good heat conductivity is preheated in the above-mentioned way, the heat balance thereof with the steel plate is improved and the good build-up weld zone is formed.
摘要翻译：目的：为了提高铜管侧的接合性，并且通过预热在具有良好导热性的焊接区附近的铜管的一部分，通过非消耗电极贯穿钢板的铜管的焊接形成良好的圆角形状用电弧焊接焊接区域，并将填充焊丝焊接到所述区域。构成：在穿过钢板1的铜管2的焊脚焊接中，如图中虚线所示，首先使非消耗性电极3偏离，并且通过电弧放电对管2的周长进行预热。然后将电极3设定在规定的位置，并且当填充线4被供给时，两个构件被焊接。然后堆积表面被平整并且焊接完成。如果以上述方式对具有良好导热性的管道2进行预热，则与钢板的热平衡得到改善，形成良好的堆积焊接区域。

22. 发明专利

JPS5623261A SINTERED METALLIC MATERIAL AND ITS MANUFACTURE 失效
公开(公告)号：JPS5623261A
公开(公告)日：1981-03-05
申请号：JP9726979
申请日：1979-08-01
申请人： HITACHI LTD
发明人： NAKAE HIDEO , WATANABE SHIYOUEI , MUROI KATSUMI , HASHIDA SHIGEO
IPC分类号： F16C33/12 , C22C33/02 , C22C38/00 , C22C38/60
摘要： PURPOSE:To inexpensively obtain a sintered metallic material having satisfactory sliding characteristics by sintering a metallic material having a specified composition contg. Cu, Ni, etc. at a specified temp. and adjusting the cooling rate to from about 800 deg.C to 500-2,000 deg.C/hr. CONSTITUTION:A metallic material consisting of 0.5-5% Cu, 0.5-4% Ni, 2- 2.5% Mo, 0.1-2% S, 0.8-4% C and the balance Fe and satisfying the relation of Cu+Ni>=1.5% is sintered at 950-1,200 deg.C, and the cooling rate at about 800 deg.C is adjusted to 500-2,000 deg.C/hr. The S component is added using an org. lubricant and a metal sulfide such as MoS2 or FeS having lubricity or not having lubricity. Thus, a sintered metallic material having high hardness and superior lubricating characteristics is obtd. cheaply without requiring many processes for working unlike a conventional method.

23. 发明专利

JPS55100983A SURFACE TREATMENT OF METAL MATERIAL 失效
公开(公告)号：JPS55100983A
公开(公告)日：1980-08-01
申请号：JP617179
申请日：1979-01-24
申请人： HITACHI LTD
发明人： NAKAE HIDEO , WATANABE SHIYOUEI , HASHIDA SHIGEO
IPC分类号： C23C18/31
摘要： PURPOSE:To give low abrasive property and high wear resistance to the surface of metal by forming a sulfide layer by keeping a metal material at a fixed temperature and under reduced pressure in an atmosphere of CS2 and any one of air, CO2, H2, and O2. CONSTITUTION:A metal material (e.g., SS41 steel) is charged in a furnace with CS2 and any one of air, CO2, H2, and O2 and then kept at 300-600 deg.C and under one atom, particularly while keeping the pressure of CS2 at 10-300 Torr. Preferably, in the case the other gas, e.g., air or H2, its pressure shaould be kept at 5-300 Torr, or in the case of CO2 or O2, its pressure shoul be kept at 1-150 Torr. Also, the preferred maintenance time of the foresaid temperature is 0.5-20hr. Thus, H2S formed is fixed in the form of solid sulfides by the introduction of an element, e.g., Mn, etc., having a high affinity to S, after treatment. Thus, H2S can be easily removed and also treatment is very easy and no harmful gas, e.g., HCN, etc., emits because of no use of NaCN, etc., as in the conventional cases, permitting operational control to made easier.

24. 发明专利

JPS5575847A COAT FOR VACUUM MOLD 失效
公开(公告)号：JPS5575847A
公开(公告)日：1980-06-07
申请号：JP14912178
申请日：1978-12-04
申请人： HITACHI LTD
发明人： WATANABE SHIYOUEI , AIZAWA TATSUSHI , NAKAZAWA TETSUO , SAKAI JIYUNJI
IPC分类号： C10M101/00 , B22C3/00
摘要： PURPOSE:The captioned coat which comprises using refractories, activators, water- soluble high polymers containing carboxyl groups and water and which has good adhesiveness and heat resistance. CONSTITUTION:For example, zircon flower 100 parts, isobutyrene-maleic acid anhydride copolymer 4-8 parts, activator 0.05-0.2 part and water 30-50 parts based on weight are mixed and agitated. The coat thus prepared is brushed on a vacuum mold and before it dries, sand is charged and a vacuum is made to set the sand.

25. 发明专利

JPS54135611A REFINING METHOD FOR CATERPILLER GRAPHITE CAST IRON 失效
公开(公告)号：JPS54135611A
公开(公告)日：1979-10-22
申请号：JP4212878
申请日：1978-04-12
申请人： HITACHI LTD
发明人： GOTOU AKIHIRO , WATANABE SHIYOUEI
IPC分类号： C21C1/10 , C21C1/08
摘要： PURPOSE:To stably manufacture caterpiller graphite cast iron by adding a graphite form regulating agent consisting of rare earth elements, Ca and Mg to molten cast iron contg. Si

26. 发明专利

JPS52150729A COMBINED MOLD AND ITS MAKING METHOD 失效
公开(公告)号：JPS52150729A
公开(公告)日：1977-12-14
申请号：JP6771076
申请日：1976-06-11
申请人： HITACHI LTD
发明人： WATANABE SHIYOUEI , AIZAWA TATSUSHI , NATORI TATSUO , TANIGAWA TAKATOSHI
IPC分类号： B22C9/03 , B22C9/02 , B22C9/20

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