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镀锌无缝钢管
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镀锌无缝钢管
作者:管理员 时间:2023-04-06 10:55:17

<p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">合金管与无缝管两者既有关系又有区别,不能混为一谈。</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">合金管是钢管按照生产用料(也就是材质)来定义的,顾名思义就是合金做的管子;而无缝管是钢管按照生产工艺(有缝无缝)来定义的,区别于无缝管的就是有缝管,包括直缝焊管和螺旋管。</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">高压合金钢管材质:12Cr1MoV(G)、13CrMo44(A335P12、STFA22、15CrMo)、10CrMo910(A335P22、12Cr2Mo、STFA24)、A335P5(STFA25、Cr5Mo)、A335P9(Cr9Mo、STFA26)、A335P91(T91)、A335P92、WB36(15NiCuMoNB5)、钢研102(12Cr2MoWVTiB)、1Cr5Mo、30CrMo、35CrMo、40CrMo、42CrMo、38CrMoAL</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">合金管的材质大致有:</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">10#、20#、35#、45#、16-50Mn、27SiMn、40Cr、12-42CrMo</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">16Mn 12Cr1MoV T91 27SiMn 30CrMo 15CrMo 20G Cr9Mo 10CrMo910 15Mo3 15CrMoV 35CrMoV 45CrMo</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">合金钢管材质中各元素及符号含义</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">钢的牌号简称钢号,是对每一种具体钢产品所取的名称,是人们了解钢的一种共同语言。 我国的刚号表示方法一般采用汉语拼音字母、化学素符号和阿拉伯数字相结合的方法表示。</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">下面我们具体介绍一下</font></span><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">合金钢管</font></span><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">材质中各元素及符号含义</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">1、钢号开头的两位数字表示钢的碳含量,以平均碳含量的万分之几表示,如40Cr。</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">2、钢中主要合金元素,除个别微合金元素外,一般以百分之几表示。 当平均合金含量&lt;1.5%时,钢号中</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">一般只标出元素符号,而不标明含量,但在特殊情况下易致混淆者,在元素符号后亦可标以数字“1”,</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">例如钢号“</font></span><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">12CrMoV合金钢管</font></span><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">”和“12Cr1MoV钢管”,前者铬含量为0.4-0.6%,后者为0.9-1.2%,其余成分全部相同</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">当合金元素平均含量≥1.5%、≥2.5%、≥3.5%……时,在元素符号后面应标明含量,可相应表示为2、3</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">、4……等。例如18Cr2Ni4WA。</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">3、钢中的钒V、钛Ti、铝AL、硼B、稀土RE等合金元素,均属微合金元素,虽然含量很低,仍应在钢号中</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">标出。例如20MnVB</font></span><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">合金管</font></span><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">钢中钒为0.07-0.12%,硼为0.001-0.005%。</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">4、高级优质钢应在钢号最后加“A”,以区别于一般优质钢。</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">5、专门用途的合金结构钢,钢号冠以(或后缀)代表该钢种用途的符号。例如铆螺专用的30CrMnSi钢,</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">钢号表示为ML30CrMnSi。</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">6、对专业用低合金高强度钢, 应在钢号最后标明。例如16Mn钢,用于桥梁的专用钢种为“16Mnq”,汽</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">车大梁的专用钢种为“16MnL”,压力容器的专用钢种为“16MnR”。</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">高压合金钢管组织强化的的三个特点</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">通常情况下,合金钢管的微观组织结构决定的钢管的结构性能,然而,组织强化决定着微观组织结构。冷轧合金钢管在轧制完成后,随着冷却环境的改变,组织中各种贝氏体、马氏体等结构组织也随之而改变,这也导致的钢管的结构性能有很大的改变,可以通过这种方法获得更多的强度不通级别的钢管,以适应不同的性能需求。</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">1、组织强化需要母相,即在钢管的元素中要含有发生组织强化的母相。</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">2、组织强化是一个过程,包括组织形变及组织扩散,随着冷却环境的改变,合金钢管组织结构可能有两种变化方式,即有扩散和无扩散,在低温环境里,无扩散决定着组织形变的过程;在高温环境中,扩散决定着组织结构的改变。</font></span></p><p><span style="mso-spacerun:&#39;yes&#39;;font-family:Calibri;mso-fareast-font-family:宋体; mso-bidi-font-family:&#39;Times New Roman&#39;;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><font face="宋体">3、组织强化有两个重要因素,即组织应变和环境冷却。例如在加热环境或者冷却环境中,合金钢管的组织会随着温度的改变而逐渐改变,能量状态由低转变为高。另外,查看钢管现货可以知道,在合金钢管中,少量介质含有极其精细的密度。因此,在调整钢管的结构性能时,要时刻注意合金钢管的组织性能。</font></span></p><p></p>

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