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tubular products for seamless steel, low alloy steel and seamless steel pipe production countries
tubular products for seamless steel, low alloy steel and seamless steel pipe production countries
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机译：无缝钢管，低合金钢和无缝钢管生产国的管状产品
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摘要
TUBULAR PRODUCTS FOR COUNTRIES OIL SEAMLESS OIL PRODUCERS, LOW ALLOY STEEL AND SEWLESS STEEL PIPE PRODUCTION METHOD. Low-alloy steel comprising by mass%, C: 0.10 to 0.20%, Si: 0.05 to 1.0%, Mn: 0.05 to 1.5%, Cr: 1.0 to 2 , 0%, Mo: 0.05 to 2.0%, A1: 0.10% or less and Ti: 0.002 to 0.05%, and having a C C eqq value obtained by the following formula (1) of 0.65 or more, with the balance consisting of Fe and impurities, where in the impurities, P is 0.025% or less, S is 0.010% or less, N is 0.007% or less, and B is less than 0.0003% , and the number per unit area of precipitates type M ~ 23 ~ C ~ 6 ~ (M: a metal element) whose grain diameter is 1 m or more is 0,1 / mm ^ 2 ^ or less. The invention provides a low alloy steel that exhibits both toughness and toughness and improves resistance to stress crack stress corrosion cracking. Being formula (1): C ~ eq ~ = C + (Mn / 6) + (Cr + Mo + V) / 5, where C, Mn, Cr, Mo and V in formula (1) denotes mass% of their elements.
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机译：管状产品，用于国家的无缝油生产商，低合金钢和无缝钢管生产方法。以质量％计，C：0.10至0.20％，Si：0.05至1.0％，Mn：0.05至1.5％，Cr：1.0至2，0％，Mo：0.05至2.0％，Al：0.10％的低合金钢Ti：0.002〜0.05％以下，并且，由下式（1）求出的CCeqq值为0.65以上，其余为Fe和杂质，其中，杂质中P为0.025％以下， S为0.010％以下，N为0.007％以下，B为0.0003％以下，且粒径为M〜23〜C〜6〜（M：金属元素）的析出物型的每单位面积个数。 1 m以上为0.1 / mm ^ 2 ^以下。本发明提供了一种低合金钢，其同时显示出韧性和韧性，并提高了对应力裂纹，应力腐蚀裂纹的抵抗性。式（1）：C〜eq〜= C +（Mn / 6）+（Cr + Mo + V）/ 5，其中式（1）中的C，Mn，Cr，Mo和V表示其元素的质量％ 。
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