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    • 2. 发明申请
    • USE OF AN AIR-HARDENING STEEL DEOXIDIZED BEFORE CASTING AS MATERIAL FOR PRODUCING A HIGH-STRENGTH, WELDABLE, SEMI-FINISHED PRODUCT
    • 棚风干钢为材料的平静用于生产高强度焊接半成
    • WO1999028518A1
    • 1999-06-10
    • PCT/DE1998003296
    • 1998-11-06
    • MANNESMANN AGVON HAGEN, IngoRING, MarkusNIEDERHOFF, KurtSANDERS, HeinzCLAUS, Ronald
    • MANNESMANN AG
    • C22C38/38
    • C22C38/38
    • The invention relates to the use of an air-hardening steel deoxidized before casting as material for producing a high-strength weldable semi-finished product (yield point of between 600 and 900 N/mm ), which steel has the following composition (weight percent): at least 0.05 % C, between 0.50 and 0.80 % Si, between 2.00 and 3.35 % Mn, no more than 0.03 % P, no more than 0.03 % S, between 0.50 and 1.00 % Cr, no more than 0.60 % Mo, no more than 0.05 % Al, between 0.01 and 0.05 % Ti, between 0.0015 and 0.0035 % B, and between 0.002 and 0.015 % N, the remainder consisting of iron and standard impurities. Said steel complies with the following ratios: Ti (%) : N (%)>/=3.4 and Mn (%) + Cr (%) + Mo (%) + Si (%)>/=3.3 %. The semi-finished product is produced by hot rolling on the condition that the C content does not exceed 0.14 % and the wall thickness is limited to 20 mm.
    • 本发明涉及使用一个平静下来模塑空气硬化组成如下(重量%)的钢,其包括:至少0.05%C,0.50至0.80%的Si,2.00至3.35%的Mn,最高 , 0.03%P,最大 0.03%的S,0.50〜1.00%的Cr,最高 0.60%的Mo,最大 0.05%的Al,0.01〜0.05%的Ti,0.0015〜0.0035%的B,0.002〜0.015%的N,余量的铁和附带的杂质,并且其中下列关系被满足:TI(%) :N(%)> / = 3.4,锰+(%)+的Cr(%)+沫+(%)+的Si(%)> / = 3.3%用于生产的高强度(屈服点的范围内的材料 600至900牛顿/平方毫米<2>),半成品通过与C含量限制为最大条件热轧焊接。 0.14%和壁厚最大值。 20毫米是有限的。
    • 5. 发明申请
    • PRODUCTION OF A METAL PIPE CONNECTION
    • 方法的金属制管接头
    • WO9831958A2
    • 1998-07-23
    • PCT/DE9702940
    • 1997-12-12
    • MANNESMANN AGVON HAGEN INGONIEDERHOFF KURTRING MARKUSKREMSER THOMAS
    • VON HAGEN INGONIEDERHOFF KURTRING MARKUSKREMSER THOMAS
    • B21C23/08B21C23/22B21C37/06B21C37/15F16L13/02F16L
    • B21C37/15B21C23/085B21C23/22B21C33/004B21C33/006B21C37/06F16L13/0209
    • The present invention relates to a method for making a metal pipe connection in the form of an intermediate tube for connecting through ring-shaped welds a pipe made of a first material to another pipe made of a second material. The intermediate tube is made of a first material at one end and of the second material at the other end, and comprises in the transitional area between both materials, at least in partial areas, a large surface weld. One of the two materials is used to make a first cylindrical block with a conical coaxial recess open to the outside, and the other material is used to make a second cylindrical block having the same external diameter as the first one, the block having, outside, a conical shape at one of its two front ends. Thereafter, the two blocks are adjusted into each other; then, in the area where the diameter of the conical forms is the greatest, said blocks are connected to each other by a ring-shaped weld, heated at a thermoforming temperature, stretched in an extruding machine to a pin entirely welded in the side area of the cone, and submitted to a chip removal process to become a tubular body.
    • 本发明涉及一种用于制造在用于连接第一材料制成的管,与第二材料的导管的管状中间件的形式的金属管接头,通过圆形焊接接缝,所述管中间片在所述第一和另一在其端部的一个端部由 形成并在管状中间件的两种材料的过渡区域中的第二材料的至少一个大面积的焊接是存在于一些区域。 在这种情况下,从所述两个材料之一,具有同轴的第一圆柱形块来制备作为第一嵌段的制备和该块是两个中的一个的端面向外开口的相应的其它材料的截头圆锥形凹部的第二圆柱块与相同的外径 截头圆锥形的外端。 随后,这两个单元被插入到彼此,由密封在一起的圆形焊缝,加热到热成型温度,在一个挤压机拉伸至在锥形壳表面的区域中的完全焊接的螺栓具有显著较小直径和较大的轴向长度和管状体连接在所述截头圆锥体形状的最大直径的区域中 加工。
    • 6. 发明申请
    • METHOD FOR MAKING SEAMLESS TUBING WITH A STABLE ELASTIC LIMIT AT HIGH APPLICATION TEMPERATURES
    • 方法用于生产具有稳产点无缝钢管在使用高温
    • WO1998031843A1
    • 1998-07-23
    • PCT/DE1997002943
    • 1997-12-12
    • MANNESMANN AGVON HAGEN, IngoRING, MarkusHEINZ, GerdKOSCHLIG, BernhardNIEDERHOFF, Kurt
    • MANNESMANN AG
    • C22C38/12
    • C22C38/12C21D8/10C21D9/08
    • Disclosed is a method for making seamless tubing in a quality range of X 52 to X 90, with a stable elastic limit up to a temperature of application of 200 C and with a steady tension-expansion characteristic, consisting in submitting to a hot rolling process a steel-based source material containing the following alloy components (wt. %): C(0,06 - 0,18 %), Si (max. 0,40 %), Mn (0,80 -1,40 %), P (max. 0,025 %), S (max. 0,010 %), Al (0,010 - 0,060 %), Mo (max. 0,50 %), V (max. 0,10 %), Nb max. 0,10 %, N (max. 0,015 %), W > 0,30 - 1 %), the rest consisting of Fe and the usual impurities. After the hot rolling process, the cooled tubing parts are reheated through AC3, then tempered at a cooling temperature of at least 15 DEG C/s, and annealed at a temperature of 500 to 700 DEG C.
    • 本发明涉及一种用于在质量水平范围X 52生产无缝管至X 90,重量(含屈服强度稳定性高达200℃的操作温度和具有由以下合金元素的钢制成的Röhrenvormaterials的热轧基本恒定的应力 - 应变特性 .-%)含有:C 0.06至0.18%,Si最多 0.40%以下,Mn 0.80〜1.40%,P最高。 0.025%,S最大。 0.010%,0.010的Al〜0.060%,莫最大。 0.50%,V最大。 0.10%Nb最大值。 0.10%,N最高 0.015%,W> 0.30-1.00%。 s的淬火余量的铁和附带的杂质,其中,在热轧后,通过AC3再加热该冷却管,则与/达不到100℃,然后在至少15℃的冷却速度的温度范围内进行退火500〜700℃的管 ,