Internal high-pressure shaping method for shaping conical tubes made of metal
    1.
    发明申请
    Internal high-pressure shaping method for shaping conical tubes made of metal 有权
    用于成型由金属制成的锥形管的内部高压成形方法

    公开(公告)号:US20070180677A1

    公开(公告)日:2007-08-09

    申请号:US10568265

    申请日:2004-08-04

    IPC分类号: B23P17/00

    摘要: The invention relates to an internal high pressure shaping method for shaping metal tubes (5) produced from metal, especially steel, in a tool (1) that has a die cavity (2) with a complex contour. Said die cavity (2) has cylindrical sections (2a, 2b) on its two opposite ends. The tube which is conical across its entire length is inserted in such a die cavity in such a manner that it lies with its ends (5a, 5b) in the area of the cylindrical sections (2a, 2b). The sealing plugs force the ends (5a, 5b) against the cylindrical sections (2a, 2b), optionally while radially flaring them, so that they come to rest clamped between the wall of the cylindrical sections (2a, 2b) and the sealing plugs. The tube (5) is forced against the complex contour of the die cavity (2) by subjecting the tube (5) to an internal high pressure and simultaneous axial compression of the tube (5).

    摘要翻译: 本发明涉及一种在具有复杂轮廓的模腔(2)的工具(1)中对由金属,特别是钢制成的金属管(5)进行成型的内部高压成形方法。 所述模腔(2)在其相对两端具有圆柱形部分(2a,2b)。 在其整个长度上圆锥形的管子以这样的方式插入到这样的模腔中,使得其在圆柱形部分(2a,2b)的区域中以其端部(5a,5b)为中心。 密封塞将端部(5a,5b)压在圆柱形部分(2a,2b)上,任选地同时径向地向外扩张,使得它们停留在圆柱形部分(2a,2b)的壁之间 b)和密封塞。 通过使管(5)经受管(5)的内部高压并同时轴向压缩,迫使管(5)抵靠模腔(2)的复杂轮廓。

    Method for the production of a cold formed piece part made out of a steel plate
    2.
    发明授权
    Method for the production of a cold formed piece part made out of a steel plate 失效
    用于生产由钢板制成的冷成型件的方法

    公开(公告)号:US06883218B2

    公开(公告)日:2005-04-26

    申请号:US09946882

    申请日:2001-09-04

    摘要: This invention relates to a procedure for manufacturing cold-formed components (R) out of sheet steel and use of a sheet bar comprising the following steps: Generation of a sheet bar (P) out of a base plate (G), which consists of a first steel material; replacement of at least one section of the base plate (G) with a sheet steel blank (1, 2) whose thickness (D1, D2) or at least one material property differs from the first sheet steel (G), wherein the thickness (D1, D2) and/or deviating material property and the geometry of the sheet steel blank (1, 2) and its position in the sheet bar (P) are determined by the material flow during the ensuing cold forming process; and cold forming of the sheet bar (P) to fabricate the component (R). The procedure according to the invention ensures an improved result of cold forming, or even enables the manufacture of specific component shapes in the first place.

    摘要翻译: 本发明涉及一种用于制造板材中的冷成型件(R)和使用板材的方法,该方法包括以下步骤:从基板(G)的基板(G)中生成板材(P),其由 第一钢材; 用厚度(D 1,D 2)或至少一种材料性质与第一钢板(G)不同的钢板坯(1,2)更换基板(G)的至少一个部分,其中, 厚度(D 1,D 2)和/或偏差材料性质和钢板坯料(1,2)的几何形状及其在薄板坯(P)中的位置由随后的冷成型过程中的材料流动确定; 和薄板坯(P)的冷成型以制造组分(R)。 根据本发明的方法确保了冷成型的改进结果,或者甚至能够首先制造特定的部件形状。

    Method of preparing vacuum-treated steel for making ingots for forging
    3.
    发明授权
    Method of preparing vacuum-treated steel for making ingots for forging 失效
    制造用于锻造锭的真空处理钢的方法

    公开(公告)号:US3907547A

    公开(公告)日:1975-09-23

    申请号:US45403574

    申请日:1974-03-22

    发明人: GRAF HANS LUTZ HARRY

    CPC分类号: C21C7/06 C21C5/32 C21C7/10

    摘要: A process for preparing a vacuum-treated steel for making forging ingots of great weight and high purity as required for rotors, turbine shafts, inductor shafts and other, usually annealed, large steel parts, which comprises: 1. Subjecting molten raw iron to blowing with oxygen and at least one slagging operation to form a foremetal containing 0.10 to 1 percent by weight carbon and less than 0.010 percent by weight phosphorus, at temperatures not exceeding 1650*C; 2. Separating said foremetal formed in step 1 from slag and directing an oxygen down-blast onto the surface of said molten metal while maintaining it molten to raise the temperature thereof to a temperature greater than 1700*C; 3. Simultaneous to said oxygen down-blast, injecting gas into said molten metal through at least one laterally disposed gas inlet terminating in a nozzle, the amount of gas being sufficient only to keep the nozzle free of said metal; 4. After said molten metal has reached a temperature in excess of 1700*C, discontinuing said oxygen down-blast; 5. Introducing an alloying component to said foremetal and increasing the injection of oxygen and inert gas to said molten metal; 6. Adding reducing agent to said molten metal; 7. Adding a desulfurizing agent to said molten metal to reduce sulfur content to less than 0.010 weight percent and introducing to said molten metal inert gas; and 8. Subjecting said molten metal to a vacuum treatment and teeming said molten metal.

    摘要翻译: 一种用于制造真空处理钢的方法,所述真空处理钢用于制造转子,涡轮轴,电感器轴等通常退火的大型钢部件所需的重量高且纯度高的锻造锭,其包括:

    Process of manufacturing a reinforcing bar steel for prestressed concrete
    4.
    发明授权
    Process of manufacturing a reinforcing bar steel for prestressed concrete 失效
    制造预应力混凝土钢筋的工艺

    公开(公告)号:US3810793A

    公开(公告)日:1974-05-14

    申请号:US26466972

    申请日:1972-06-20

    发明人: HELLER W

    IPC分类号: C21D8/08 C21D7/02 C21D7/14

    CPC分类号: C21D8/08

    摘要: A PROCESS FOR MANUFACTURING AN UNANNEALED REINFORCING BAR STEEL FOR PRESTRESSED CONCRETE WHICH COMPRISES SUBJECTING A STEEL HAVING A COMPOSITION OF: 0.20-0.35 WEIGHT PERCENT CARBON 0.20-2.50 WEIGHT PERCENT SILICON 0.50-3.50 WEIGHT PERCENT MANGANESE 1.25-4.50 WEIGHT PERCENT CHROMIUM (MN+CR)=2.75-5.00 WEIGHT PERCENT, THE BALANCE CONSISTING ESSENTIALLY OF IRON BY COOLING IT IN QUIET AIR FROM THE HOT-ROLLED STATE WITH THE FORMATION OF BAINITE STRUCTURE AND, THEREAFTER, EITHER COLD DEFORMING IT PLASTICALLY WITHOUT ESSENTIAL INCREASE OF TENSILE STRENGTH AND TEMPERING THE SAME AT A TEMPERATURE IN THE RANGE OF 100 TO 400* C. OR TEMPERING IT IN THE TEMPERATURE RANGE BETWEEN 150 AND 550* C.

    Steel composition capable of being cold rolled
    5.
    发明授权
    Steel composition capable of being cold rolled 失效
    钢组合物可以冷轧

    公开(公告)号:US3776720A

    公开(公告)日:1973-12-04

    申请号:US3776720D

    申请日:1971-12-27

    发明人: DUDEK M

    CPC分类号: C22C38/18

    摘要: A stainless semi-ferritic steel composition suitable for forming ribbing-free cold strip said steel composition having an austenite content of between about 10 and 40 percent, at temperatures above Ac1, said steel composition comprising: Up to 0.12 % by weight carbon 13-23 % BY WEIGHT CHROMIUM 0 - 2 % BY WEIGHT MOLYBDENUM 0-0.5 % BY WEIGHT NICKEL Up to a maximum of 1.0 % by weight silicon Up to a maximum of 0.35 % by weight manganese Up to a maximum of 0.010 % by weight sulphur 0.025-0.060 % BY WEIGHT PHOSPHORUS 0.020-0.060 % BY WEIGHT ARSENIC, AT LEAST 0.050 % OF SAID ARSENIC AND SAID PHOSPHORUS BEING COMBINED ARSENIC AND PHOSPHORUS, THE BALANCE BEING IRON PLUS OTHER COMMON IMPURITIES; A PROCESS FOR OBTAINING A SEMI-FERRITIC STAINLESS STEEL WHICH IS STILL AIR-HARDENING, SAID STAINLESS STEEL HAVING A AUSTENITE CONTENT OF BETWEEN 10 AND 40 PERCENT AT TEMPERATURES ABOVE Ac1 and capable of being cold rolled into a strip of slight thickness, which strip is characterized by being substantially non-washboarding, which process comprises utilizing as the steel composition the composition set forth above, maintaining the same at a temperature of between 700* and 780*C for between 2 and 10 hours, thereafter heating the same to a hot rolling temperature just below Ac1 and rolling down to the final hot rolling thickness, said steel composition being worked either as a crude ingot from the solidus temperature or in the form of a bloom in which it is worked from the cogging temperature.