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1. 发明专利

JPH05117831A GALVANNEALED STEEL SHEET HAVING EXCELLENT SLIDABILITY IN PRESS DIE 失效
公开(公告)号：JPH05117831A
公开(公告)日：1993-05-14
申请号：JP28451391
申请日：1991-10-30
申请人： KAWASAKI STEEL CO , TOYOTA MOTOR CORP
发明人： YASUDA AKIRA , HIRA TAKAAKI , HANAZAWA TOSHITAKE , UENO HIROAKI , SERIZAWA YOSHIHISA , MORISHITA TADAAKI , SATO KAZUYOSHI
IPC分类号： C23C2/06 , C23C2/26 , C23C2/28 , C23C2/40
摘要： PURPOSE:To obtain a good press-formability by making iron content in a plating layer, surface roughness and skewness in amplitude probability distribution of the surface roughness each the specific value. CONSTITUTION:The iron content in the plating layer is made to 7-12wt% and three dimensional average surface roughness SRa in the plating layer is made to 0.7-1.4mum and further, the skewness S in the amplitude probability distribution of the surface roughness defined with the equation I is made to 0.1-0.3. In the equation I,,3 three dimensional moment of the amplitude probability density, sigma: standard deviation in the amplitude probability density. By this method, the slidability in the press die can be improved.

2. 发明专利

JPH06138020A SLIDING TEST METHOD 失效
公开(公告)号：JPH06138020A
公开(公告)日：1994-05-20
申请号：JP28753692
申请日：1992-10-26
申请人： KAWASAKI STEEL CO
发明人： MATSUMOTO YOSHIHIRO , HIRA TAKAAKI , HASHIGUCHI KOICHI , MIYAZAKI AKIRA , UENO HIROAKI
IPC分类号： G01N19/02
摘要： PURPOSE:To provide a sliding test method capable of simultaneously conducting tests of a lot of items once in a sliding test of a metal plate. CONSTITUTION:In a sliding test of a metal plate, a sliding test piece having a right and left symmetrical form in the direction of sliding, a taper-like or staged width change and length of each step of twice or more as long as the contact length of a sliding metal fitting in the case of a staged change, is used and a sliding test method capable of testing a test piece having a wide width to narrow for one time of sliding.

3. 发明专利

JPS63140717A METHOD FOR CONTROLLING SHAPE IN COLD ROLLING 失效
公开(公告)号：JPS63140717A
公开(公告)日：1988-06-13
申请号：JP28767986
申请日：1986-12-04
申请人： KAWASAKI STEEL CO
发明人： FUJIWARA SHUNJI , UENO HIROAKI , SAMEJIMA ICHIRO , HAMAISHI MASAHIRO
IPC分类号： B21B37/38 , B21B37/00
摘要： PURPOSE:To improve a shape at the tip part of a succeeding plate at the time when the kind of steel is changed by finding the set value of a bender pressure by a specific equation from a deviation value in the work roll benders at a work side and driving side of a final stand and a wedge amt. prior to rolling. CONSTITUTION:In the cold rolling mill enabling to set a bender pressure independently at a work side and driving side respectively, the respective set value of a bender pressure at a work side and driving side is calculated with the equation Pw=PB+1/2Pd, PD=PB+1/2Pd, PdPB{mXPd +nXf(td)}, Pd =Pw -PD , td=tw-tD from the deviation of the result value of the work roll benders at the work side and driving side of the final stand and the wedge amt. of the plate thickness prior to the rolling of a stock to be rolled [whereas, Pw, PD: bender pressures set value at work side and driving side, Pw, PD: bender pressures set value at work side and driving side, PB: the mean of set values, Pd; Difference in set values, Pd ; Difference in the results values of the bender pressure of the preceding material, pw , PD ; the result value of the bender pressure of the preceding material, td; the wedge amt. of the plate thickness prior to rolling, tw, td; the plate edge thickness prior to rolling and (m), (n); constant]. This set value is preset at the changing time of the steel kind and dimension of the stock to be rolled.

4. 发明专利

JPS5933167B2 JPS5933167B2 - 失效
公开(公告)号：JPS5933167B2
公开(公告)日：1984-08-14
申请号：JP9984479
申请日：1979-08-07
申请人： Kawasaki Steel Co
发明人： IKEDA TERUAKI , UENO HIROAKI , IWAMOTO TOSHIO , KONISHI TOSHIHIRO , YOSHIDA AKISHIGE
IPC分类号： C21D8/02 , C21D1/84 , C21D8/00 , C21D9/46

5. 发明专利

JPS5461277A ANTICORROSIVE COATED STEEL PLATE WITH GOOD PRESSING PROCESSABILITY 失效
公开(公告)号：JPS5461277A
公开(公告)日：1979-05-17
申请号：JP12729677
申请日：1977-10-25
申请人： KANSAI PAINT CO LTD , KAWATETSU GALVANIZING , KAWASAKI STEEL CO
发明人： WADA KUNIHIKO , MARUO SHIYOUZOU , UENO HIROAKI , SONODA SHIYOUJI , AKIYAMA RITSU
IPC分类号： C09D5/10 , B05D7/14 , B32B15/04 , B32B15/08 , C09D5/08
摘要： PURPOSE:Coated steel plates with good pressing processability, high welding, anticorrosive and coating properties, which have multilayered surfaces consisting of baked coatings containing zinc powders wherein these layers have been baked separately. CONSTITUTION:After pretreatment such as phosphate salt, galvanizing or chromate treatment, the surface of steel plate is coated with a coating containing zinc powders and baked and the operation is repeated to form multilayer of baked coatings. The thickness of multilayered coating film is equal to the thickness of primer layers other than the outermost layer or the half or less of the total thickness of the surface coating layer and the thickness of every primer coating layer is made less than the value resulting from dividing the total thickness of the surface coating layer with the number of the multilayers. The coating resin used is, e.g., phthalate resin, epoxy resin, melamine resin. polyester resin and others.

6. 发明专利

JPS61276932A PRODUCTION OF COLD ROLLED STEEL SHEET FOR EXTRA-DEEP DRAWING HAVING EXTREMELY EXCELLENT RESISTANCE TO BRITTLENESS BY SECONDARY OPERATION 失效
公开(公告)号：JPS61276932A
公开(公告)日：1986-12-06
申请号：JP11666685
申请日：1985-05-31
申请人： KAWASAKI STEEL CO
发明人： UENO HIROAKI
IPC分类号： C21D9/48 , C22C38/00 , C22C38/14
摘要： PURPOSE:To obtain the titled cold rolled steel sheet by limiting the contents of C, N, S, Ti and Nb of a specifically composed dead soft steel added with Ti and Nb in combination and controlling the cooling process of continuous annealing after cold rolling of a hot rolled steel sheet according to the content of P in the steel. CONSTITUTION:The hot rolled steel sheet contg., by weight, =5,000.(P(%)-0.005) deg.C/s and >=10 deg.C/s according to the content of P in the steel in the temp. region of 600-400 deg.C during cooling from the holding temp. The titled cold rolled steel sheet is thus obtd. without the disadvantage in cost by the addition of B, Sb, etc.

7. 发明专利

JPS61250113A MANUFACTURE OF DELAYED AGING STEEL SHEET FOR SLIGHT WORKING HAVING BURNING HARDENABILITY 失效
公开(公告)号：JPS61250113A
公开(公告)日：1986-11-07
申请号：JP8992285
申请日：1985-04-27
申请人： KAWASAKI STEEL CO
发明人： UENO HIROAKI
IPC分类号： C22C38/00 , C21D8/02 , C21D9/46 , C22C38/06
摘要： PURPOSE:To obtain a delayed aging steel sheet for slight working having superior burning hardenability by regulating the composition of a steel and controlling the hot rolling, coiling and annealing temps. CONSTITUTION:The composition of a steel contg., by weight, 0.02-0.12% C, =1,100 deg.C, hot rolled, coiled at 300-600 deg.C and cold rolled. The resulting cold rolled steel sheet is continuously annealed by heating to the recrystallization temp. - 750 deg.C and soaking for

8. 发明专利

JPS5625922A PRODUCTION OF HOT ROLLED PLATE AND SHEET OF LOW CARBON STEEL WITH SUPERIOR COLD ROLLING 失效
公开(公告)号：JPS5625922A
公开(公告)日：1981-03-12
申请号：JP9984479
申请日：1979-08-07
申请人： KAWASAKI STEEL CO
发明人： IKEDA TERUAKI , UENO HIROAKI , IWAMOTO TOSHIO , KONISHI TOSHIHIRO , YOSHIDA AKISHIGE
IPC分类号： C21D8/02 , C21D1/84 , C21D8/00 , C21D9/46
摘要： PURPOSE:To make it possible to produce hot rolled plate and sheet of low carbon steel with superior cold rolling under low heating energy by hot-processing low carbon steel slab at a low temperature, cooling it by means of both air cooling and water cooling and reeling it at a low temperature. CONSTITUTION:Low carbon steel slab is hot-rolled at 1050-1200 deg.C which is lower than the heating temperature 1,200-1,280 deg.C used for usual hot-rolling. The finish rolling temperature is also made relatively low temperature of Ar3 transformation point - 650 deg.C to make grains rough and soft. The heat-treated slab is cooled so that it is air-cooled at the average cooling speed of 10-20 deg.C/sec for >=4 sec in the first half of the cooling table and water-cooled at the average cooling speed of >=30 deg.C/sec in the latter half and is reeled at 480-600 deg.C. As the result, the edge- most portion is sufficiently recrystalized and soft hot-rolled plate with even quality to the width direction without loss of acid washing can be produced under low heating energy.

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