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    • 1. 发明申请
    • PROCESS FOR PRODUCING INTERNALLY PLATED PIPES
    • 用于生产INNENPLATTIERTEN PIPES
    • WO1998025712A1
    • 1998-06-18
    • PCT/DE1997002944
    • 1997-12-12
    • MANNESMANN AGKELLER, ManfredVON HAGEN, IngoKÜMMERLING, RolfSCHMIDT, WilfriedSCHMITZ, Theodor
    • MANNESMANN AG
    • B21C37/06
    • B21C37/06B21C37/154
    • This invention concerns a process for producing internally plated pipes which, as compound pipes with an outer diameter of at least 60 mm, are used for transport of corrosive and/or abrasive fluids. To that effect, a second (inner) pipe (2) with a slightly smaller outside diameter than the inner diameter of an outer pipe (1) and a wall thickness of at least 1 mm is inserted into an outer pipe (1) of carbon steel or another more resistant metallic material. The inner pipe (2) is made out of another material, particularly of a corrosion resistant and/or wear resistant metal. Moreover, the outside pipe is reduced in diameter by forced fit using a reducing ring (4) so that the outer pipe (1) is mechanically reduced to press against the inner pipe (2). This invention is characterized in that the reduction of the diameter of the outer pipe (1) using a reducing ring (4) is only carried out to the extent that the mechanical deformation of the inner pipe, which is brought about by the pressing on of the outer pipe onto the inner pipe (2), still remains within the elastic range.
    • 本发明涉及一种用于制备innenplattierten管,其与至少60毫米腐蚀性和/或磨蚀性流体的输送的外径设置为复合管,其中,在一外管(1)的金属由碳钢或其它高强度 材料的第二(内)管(2)被插入相对于所述外管的内径(1)略小外径和至少1毫米的壁厚和内管(2)不同的,尤其是耐腐蚀和/或 耐磨金属材料和在其中所述外管是由在其直径强制通过还原环(4)降低那么多,使外管(1)在压机方面收缩机械装配在所述内管(2)。 本发明的特征在于,所述外管(1)的直径的在减速机(4)的还原将只到目前为止,通过所述外管与所述内管(2)的收缩进行导致内管的机械变形,也不 保持在弹性范围内。
    • 5. 发明申请
    • PROCESS FOR PRODUCING WELDLESS STEEL PIPES
    • 用于生产钢管的无缝
    • WO1998001589A1
    • 1998-01-15
    • PCT/DE1997001470
    • 1997-07-08
    • MANNESMANN AGCLAUS, RonaldMEIMETH, StefanSANDERS, HeinzSCHRÖDER, JensVON HAGEN, Ingo
    • MANNESMANN AG
    • C21D08/10
    • B21B23/00B21B3/02B21B17/00B21B19/04B21B2015/0028C21D8/10
    • The invention relates to a process for producing weldless steel pipes by hot-rolling of a round block in a plurality of stages. During said process, said round block consisting of interstitial-free (IF) steel is inserted and heated in a furnace; the heated round block is subjected to cross-rolling to produce a hollow block at a temperature (temperature at which said block is withdrawn from the furnace) in the region of 1060 to 1200 DEG C; the hollow block is subsequently subjected to breaking down at temperatures about Ar3; the drawn hollow block is subsequently used to homogenise the temperature thereof for further rolling and for grain refining by recrystallisation in a reheating furnace, the temperature being set in the region of 780 to 880 DEG C in the hollow block; the homogenised hollow block is subjected to finishing rolling by stretch-reducing rolling or sizing rolling, the deformation level of finishing rolling being selected to be so high that a grain size of ASTM6 to ASTM9 is obtained; and the resultant weldless steel pipes are cooled in air.
    • 本发明涉及一种用于通过在多个步骤中热轧圆钢坯生产无缝钢管的方法。 这里,IF钢(无间隙)被插入并在烘箱中加热的圆形块,加热的圆钢坯是那么C经受交叉轧制中,中空铸锭,然后在在该范围内的温度下(烘箱拉伸温度)以产生中空块1060至1200年DEG 其中,在所述范围780-880℃的温度下在空心块体的温度高于Ar3设定经受拉伸空心砌块一个拉伸辊被用于随后均匀化其温度进一步轧制和用于在加热炉通过重结晶晶粒细化,均质化的空心块是 通过还原辊或经受质量辊,整理剂,其中形成精轧选择大到使得ASTM6的粒度实现到ASTM9,和由此形成的无缝钢管在空气中被冷却。
    • 7. 发明申请
    • WELDABLE HIGH-STRENGTH STRUCTURAL STEEL WITH 13 % CHROMIUM
    • 具有13%铬的可焊接高强度结构钢
    • WO1993011270A1
    • 1993-06-10
    • PCT/DE1992000987
    • 1992-11-23
    • MANNESMANN AGVON HAGEN, IngoPÖPPERLING, RolfSCHLERKMANN, HubertusZEISLMAIR, Ulrike
    • MANNESMANN AG
    • C22C38/26
    • C22C38/22C22C38/26
    • The invention relates to a process for the production of seamless steel pipes of flat products (strip or sheet) for pipes or containers intended for the conveyance, transport or processing of gaseous or liquid hydrocarbons containing CO2 and water and possibly small proportions of H2S, and which are resistant to stress corrosion cracking while at the same time being easily weldable and having a 0.2% yield strength of at least 450 N/mm . An Ni-containing steel is used which also has the composition below (in wt %): min. 0.015 % C, 0.15-0.50 % Si, max. 2.00 % Mn, max. 0.020 % P, max. 0.003 % S, 12.0-13.8 % Cr, 0.002-0.02 % N, 0.01-0.05 % Nb, the remainder iron and the usual impurities. According to the invention, it is proposed that the Ni content be limited to a maximum of 0.25 %, the Mn content be at least 1.0 %, the C content be limited to 0.035 % and that as additional alloying component, 0.01-1.2 % Mo be included.
    • 本发明涉及用于生产用于运输,运输或加工含有CO 2和水以及可能小比例H 2 S的气态或液态烃的管子或容器的扁平产品(带或片)的无缝钢管的方法,以及 其耐应力腐蚀开裂同时易于焊接并且具有至少450N / mm 2的0.2%屈服强度。 使用含Ni的钢,其也具有以下组成(重量%):分钟。 0.015%C,0.15-0.50%Si,最大。 2.00%Mn,最大 0.020%P,最大 0.003%S,12.0-13.8%Cr,0.002-0.02%N,0.01-0.05%Nb,余量为铁和常规杂质。 根据本发明,提出将Ni含量限制为最大0.25%,Mn含量为至少1.0%,C含量限制为0.035%,作为附加合金成分,将0.01〜1.2%的Mo 被包括在内。
    • 9. 发明申请
    • PROCESS AND DEVICE FOR THE CONTINUOUS PRODUCTION OF SHEET METAL STRIPS
    • 方法和系统的连续生产的带状SHEETS
    • WO1996027464A1
    • 1996-09-12
    • PCT/DE1996000210
    • 1996-02-05
    • MANNESMANN AGPLESCHIUTSCHNIGG, Fritz-PeterVON HAGEN, Ingo
    • MANNESMANN AG
    • B22D11/00
    • B22D11/008C23C2/006
    • The invention concerns a process and a device for the continuous production of sheet metal strips, in particular of steel. A mother strip (1) with a metallically pure surface is drawn through a metal melt bath (14) and the resulting coating is smoothed by rolling immediately after leaving the melt bath. In order to design a process and device for carrying out this operation and facilitating controlled pre-heating of the mother strip to a temperature well above ambient temperature (more specifically, above 200 DEG C) without complex apparatus and without any risk of re-oxidation of the mother strip surface, it is proposed that the mother strip should be introduced into the metal melt bath (14) after being pre-heated to a temperature well above ambient temperature (more specifically, above 200 DEG C); the pre-heating should be done by indirect heat exchange with the melt bath in an oxygen-free environment, and the melt freshly introduced into the melt bath should be at a raised temperature corresponding to the heat loss involved in the pre-heating.
    • 本发明涉及一种方法和用于连续生产的带状片材的植物,特别是钢,其中,主带(1)与金属纯表面通过金属的熔池(14)被传递,并且其中所述涂层通过在离开熔融浴后立即 滚动平滑。 提供一种方法和用于其实施方案的装置,与母亲条的目标预加热至显著高于室温预加热温度(特别是约200℃)的温度下是可能的,而不这需要大的设备费用和无风险 母带的表面的再氧化,根据本发明,提出了母带预热用显著高于室温,特别是高于200温度℃下卧,被引入到熔池(14),其中,所述预热通过在无氧环境与熔融浴的间接热交换 被执行并且该熔新鲜供给的熔体具有根据升高的温度下预热的热损失。