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无缝钢管厂家告诉你无缝钢管的各种力学性能!

更新时间:2019-05-22

  大家都知道无缝钢管取决于钢的化学成分和热处理制度,因此在钢管标准中根据不同的使用要求,规定了拉伸性能(抗拉强度、屈服强度或屈服点、伸长率)以及硬度、韧性指标,还有用户要求的高、低温性能等。今天无缝钢管厂家告诉你无缝钢管的各种力学性能!

  ①抗拉强度(σb)

  SHIYANGZAILASHENGUOCHENGZHONG,ZAILADUANSHISUOCHENGSHOUDEZUIDALI(Fb),CHUYISHIYANGYUANHENGJIEMIANJI(So)SUODEDEYINGLI(σ),CHENGWEIKANGLAQIANGDU(σb),DANWEIWEIN/mm2(MPa)。TABIAOSHIJINSHUCAILIAOZAILALIZUOYONGXIADIKANGPOHUAIDEZUIDANENGLI。

  ②屈服点(σs)

  JUYOUQUFUXIANXIANGDEJINSHUCAILIAO,SHIYANGZAILASHENGUOCHENGZHONGLIBUZENGJIA(BAOCHIHENGDING)RENGNENGJIXUSHENZHANGSHIDEYINGLICHENGQUFUDIAN。RUOLIFASHENGXIAJIANGSHIZEYINGQUFENSHANG、XIAQUFUDIAN。QUFUDIANDEDANWEIWEIN/mm2(MPa)。

  SHANGQUFUDIAN(σsu):SHIYANGFASHENGQUFUERLISHOUCIXIAJIANGQIANDEZUIDAYINGLI; XIAQUFUDIAN(σsl):DANGBUJICHUSHISHUNSHIXIAOYINGSHI,QUFUJIEDUANZHONGDEZUIXIAOYINGLI。

  QUFUDIANDEJISUANGONGSHIWEI:Fs--SHIYANGLASHENGUOCHENGZHONGQUFULI(HENGDING)N(NIUDUN)So--SHIYANGYUANSHIHENGJIEMIANJImm2。

  ③断后伸长率(σ)

  ZAILASHENSHIYANZHONG,SHIYANGLADUANHOUQIBIAOJUSUOZENGJIADEZHANGDUYUYUANBIAOJUZHANGDUDEBAIFENBICHENGWEISHENZHANGLV。YIσBIAOSHIDANWEIWEI%。JISUANGONGSHIWEI:L1--SHIYANGLADUANHOUDEBIAOJUZHANGDUmm; L0--SHIYANGYUANSHIBIAOJUZHANGDUmm。

  ④断面收缩率(ψ)

  ZAILASHENSHIYANZHONG,SHIYANGLADUANHOUQISUOJINGCHUHENGJIEMIANJIDEZUIDASUOJIANLIANGYUYUANSHIHENGJIEMIANJIDEBAIFENBICHENGWEIDUANMIANSHOUSUOLV。YIψBIAOSHIDANWEIWEI%。JISUANGONGSHIRUXIA:S0--SHIYANGYUANSHIHENGJIEMIANJImm2; S1--SHIYANGLADUANHOUSUOJINGCHUDEZUISHAOHENGJIEMIANJImm2。

  ⑤硬度指标

  JINSHUCAILIAODIKANGYINGDEWUTIYAXIANBIAOMIANDENENGLI,CHENGWEIYINGDU。GENJUSHIYANFANGFAHESHIYONGFANWEIBUTONG,YINGDUYOUKEFENWEIBUSHIYINGDU、LUOSHIYINGDU、WEISHIYINGDU、XIAOSHIYINGDU、XIANWEIYINGDUHEGAOWENYINGDUDENG。DUIYUGUANCAIYIBANCHANGYONGDEYOUBUSHI、LUOSHI、WEISHIYINGDUSANZHONG。

  附:布氏硬度(HB)

  YONGYIDINGZHIJINGDEGANGQIUHUOYINGZHIHEJINQIU,YIGUIDINGDESHIYANLI(F)YARUSHIYANGBIAOMIAN,JINGGUIDINGBAOCHISHIJIANHOUXIECHUSHIYANLI,CELIANGSHIYANGBIAOMIANDEYAHENZHIJING(L)。BUSHIYINGDUZHISHIYISHIYANLICHUYIYAHENQIUXINGBIAOMIANJISUODEDESHANG。YIHBS(GANGQIU)BIAOSHI,DANWEIWEIN/mm2(MPa)。

  QIJISUANGONGSHIWEI:F--YARUJINSHUSHIYANGBIAOMIANDESHIYANLIN; D--SHIYANYONGGANGQIUZHIJINGmm; d--YAHENPINGJUNZHIJINGmm。

  CEDINGBUSHIYINGDUJIAOZHUNQUEKEKAO,DANYIBANHBSZHISHIYONGYU450N/mm2(MPa)YIXIADEJINSHUCAILIAODUIYUJIAOYINGDEGANGHUOJIAOBODEBANCAIBUSHIYONG。ZAIWUFENGGANGGUANBIAOZHUNZHONG,BUSHIYINGDUYONGTUZUIGUANGWANGWANGYIYAHENZHIJINGdLAIBIAOSHIGAICAILIAODEYINGDU,JIZHIGUANYOUFANGBIAN。

  JULI:120HBS10/1000130:BIAOSHIYONGZHIJING10mmGANGQIUZAI1000Kgf(9.807KN)SHIYANLIZUOYONGXIA,BAOCHI30s(MIAO)CEDEDEBUSHIYINGDUZHIWEI120N/ mm2(MPa)。

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