会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 45. 发明专利
    • PRODUCTION OF FLAT THIN AND MEDIUM STEEL SHEET WITH HIGH HARDNESS
    • JPH02250916A
    • 1990-10-08
    • JP7025389
    • 1989-03-22
    • TAKASAGO IRON WORKS
    • ONUKI TERUYOSHIDA MASAYOSHI
    • C21D8/02B21D1/00C21D8/04
    • PURPOSE:To produce a flat thin and medium steel sheet having stability and high hardness by laying austenitic stainless steel sheets in which hardness and thickness are specified by means of cold working on a flat leveling plate, applying heating to the above under specific temp. conditions for a long time, and straightening the warpage and camber of the above sheets. CONSTITUTION:A single or plural austenitic stainless steel sheets work-hardened to >=Hv300 hardness and 0.1-5.0mm thickness by means of cold working, such as cold rolling, are placed in a pile on a flat leveling plate. Subsequently, heating is applied to the above for a long time at a temp. in the temp range where hardened hardness is not lowered down to the value required of the steel sheet or below and transient creep si caused, and, preferably, the above sheets are pressed down at light pressure (about 1 to 200g/cm ) by means of a flat presser plate, by which the warpage and camber of the steel sheets are straightened. By this method, the high hardness flat thin and medium steel sheet having >=Hv300 hardness at ordinary temp., free from distortion and warpage, and having stable quality can be obtained.
    • 49. 发明专利
    • METHOD AND APPARATUS FOR CONTROLLING OF ROLLING MILL
    • JPS5858923A
    • 1983-04-07
    • JP15698581
    • 1981-10-02
    • TAKASAGO IRON WORKS
    • OOKUMA TADAO
    • B21B37/48B21B37/54B21C47/00
    • PURPOSE:To realize a constant tension rolling within a short time from the start-up, and to obtain a rolled metallic band having excellent quality and high accuracy, by using a constant speed type motor for a rolling motor and a variable speed motor for a wrapping motor and performing a constant tension controlling of the metallic band in rolling. CONSTITUTION:A metallic band 1 wrapped around a wrapper 2 in a coiled shape is advanced in the direction of an arrow mark and is wrapped by a wrapper 4 after being rolled by a rolling roll 3. In this case, at the start-up of rolling, a cylinder 9 is operated to open a clutch 7, and then a rolling motor 8 is started to be in full speed. Further, a motor 10 is made to be in a state capable of starting up by supplying an electric current to a field winding 12 of the wrapping motor 10. Next, the tip of the band 1 wrapped around the wrapper 2 is taken out to send to work rolls 5 and 5 and is passed between said rolls, is moved slightly by operating a cylinder 9 to perform a switching operation of the clutch 7 for a brief period. Further the tip of the band 1 is wrapped around a wrapper 4, while repeating said operations of slightly moving the rolls to press-adjust the thickness of the band 1 until it reaches a prescribed thickness by adjusting the pressing of back-up rolls 6 and 6 in this state.