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    Method for the production of railway rails by accelerated cooling in line with the production rolling mill
    2.
    发明公开
    Method for the production of railway rails by accelerated cooling in line with the production rolling mill 无效
    通过加工冷却生产铁路轨道的方法与生产轧制机

    公开(公告)号：EP0098492A3

    公开(公告)日：1985-04-17

    申请号：EP83106235

    申请日：1983-06-27

    申请人： The Algoma Steel Corporation, Limited

    发明人： Ackert, Robert James ,  Crozier, Peter Alan ,  Witty, Robert William

    IPC分类号： B21B01/08 ,  B21B15/00

    CPC分类号： B21B45/0215 ,  B21B1/085 ,  C21D1/667 ,  C21D9/04

    摘要： Railroad rails having improved wear resistance, are produced by controlled forced cooling from above the austenite transformation temperature, to produce rails having a fine pearlite metallurgical structure in the head portions (6) of the rails. Apparatus comprising a series of cooling headers (la, 1b) utilizing a liquid cooling medium, such as unheated (i.e. cold, or ambient temperature) water, alternating with a series of air zones (2a, 2b), is preferably arranged in line with the production rolling mill, to receive hot rails as they emerge from the mill, without the necessity of intervening reheating. A roller type restraint system (9) transports the rails through the cooling apparatus, while restraining them in the appropriate position. Each segment of the rail length is intermittently subjected to forced cooling by spray application of the liquid cooling medium, applied to the head portion (6) and the central portion of the base bottom (7) of the rail, with means being provided to prevent spray from impinging on the web and base tips of the rail: During the intervals between applications of forced cooling, heat soaks back from the web portion (4) of the rail, the operating parameters of the system being so arranged that the temperature of the rail remains essentially above the martensite formation temperature. A computerized control system discontinues the application of forced cooling, at a predetermined stop temperature, also above the martensite formation temperature. The apparatus and method are capable of producing rails having the desired fine pearlite structure in the head portion, on a consistent basis, notwithstanding wide variations in temperature between different rails, and different segments of the same rail, as they emerge from a conventional production rolling mill.

    Method of forming metal
    5.
    发明公开
    Method of forming metal 失效
    形成金属的方法

    公开(公告)号：EP0158418A3

    公开(公告)日：1987-09-02

    申请号：EP85301097

    申请日：1985-02-19

    申请人： Wilson, Alexander Ian

    发明人： Wilson, Alexander Ian

    IPC分类号： B21B01/08

    CPC分类号： B21B1/08

    摘要： A method of forming metal to produce structural steel sections, the method involving the step of hot rolling an elongate section in a universal rolling mill stand having a first pair of rolls located at right angles to a second pair of rolls. In order that the finished product can have oppositely disposed flanges (16,16) with side flanges (18,18) parallel to a web portion (14) of the section, the second pair of rolls (12,12) are located in such a position in relation to said first pair of rolls (10,10) that the side flanges (18,18) of the product are rolled between end portions of the first pair of rolls (10,10) and the respective flanks of the second pair of rolls (12,12).

    摘要翻译： 一种形成金属以生产结构钢部分的方法，所述方法包括在具有与第二对辊成直角的第一对辊的通用轧机机架中热轧细长部分的步骤。 为了使成品能够具有相对设置的凸缘（16,16），凸缘（16,16）具有平行于该部分的腹板部分（14）的侧凸缘（18,18），第二对辊（12,12）位于 相对于所述第一对辊（10,10）的位置，所述产品的侧凸缘（18,18）在所述第一对辊（10,10）的端部和所述第二对辊 一对辊（12,12）。