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发明授权
CN102056686B 高合金无缝管的制造方法 有权 转让

高合金无缝管的制造方法
摘要：
本发明提供一种高合金无缝管的制造方法。该方法使用由以质量％计含有Cr：20～30％和Ni：大于22％且小于等于60％的高合金构成的被挤压原料，依据Mo和W的含量将该被挤压原料加热到加热温度T(℃)，上述加热温度T满足由被挤压原料的平均横截面积A(mm2)、挤压比EL和挤压速度V(mm/s)表示的下述式(1)、式(2)或式(3)的关系，对该被挤压原料进行热挤压，能够不产生裂纹缺陷、破碎缺陷地制造高合金无缝管。在0％≤Mo+0.5W＜4％的情况下：T≤1343-0.001322×A-1.059×EL-0.129×V …(1)在4％≤Mo+0.5W＜7％的情况下：T≤1316-0.001322×A-1.059×EL-0.129×V …(2)在7％≤Mo+0.5W的情况下：T≤1289-0.001322×A-1.059×EL-0.129×V …(3)。
摘要（英）：

A work to be extruded which comprises a high alloy containing, in terms of mass%, 20-30% chromium and 22-60%, excluding 22%, nickel is hot-extruded while being heated, according to the contents of molybdenum and tungsten, to a heating temperature T ( DEG C) satisfying the relationship (1), (2), or (3), which is expressed with the average cross-sectional area A (mm2) of the work to be extruded, the extrusion ratio EL (-), and the extrusion speed V (mm/s). As a result, a high-alloy seamless pipe can be produced without generating crack flaws or eruption flaws. When 0%<=Mo.5W<4%; T<= 1343-0.001322A-1.059EL-0.129V (1) When 4%<=Mo.5W<7%; T<= 1316-0.001322A-1.059EL-0.129V (2) When 7%<=Mo.5W; T<= 1289-0.001322A-1.059EL-0.129V (3).

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