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怎樣識別不銹鋼復合管護欄  不銹鋼復合管護欄的特點
發(fā)布者:管理員 發(fā)布時間:2013/1/17 閱讀:3103

怎樣識別不銹鋼復合管護欄  不銹鋼復合管護欄的特點

最佳答案一、磁性試驗
 
  磁性試驗是區(qū)別退火奧氏體不銹鋼與鐵素體不銹鋼的最簡單的方法。奧氏體不銹鋼是非磁性鋼,但經大壓下冷加工后將具有輕度的磁性;而純粹的鉻鋼和低合金鋼都是強磁性鋼。
 
  二、硝酸點試驗
 
  不銹鋼復合管護欄的一個顯著特點是對濃硝酸和稀硝酸具有固有的耐蝕性。這種性能使其能很容易地從大多數(shù)其他金屬或合金中加以區(qū)分。但高碳型420和440鋼在進行硝酸點試驗時則稍受腐蝕,有色金屬遇到濃硝酸時立即會被腐蝕。而稀硝酸對碳鋼具有強烈的腐蝕性。
 
  三、硫酸銅點試驗
 
  硫酸銅點試驗是快速區(qū)分普通碳素鋼和所有類型的不銹鋼的最簡便方法。所使用的硫酸銅溶液的濃度為5~10%。
 
  在進行點試驗前,試驗區(qū)應徹底清除油脂或各種雜質,并用軟磨布磨光一個小區(qū)域,然后再用滴瓶向清理后的區(qū)域滴注硫酸銅溶液。普通碳素鋼或鐵在幾秒鐘內就會形成一層表面金屬銅,而不銹鋼的表面則不產生銅沉淀或顯示銅的顏色。
 
  四、硫酸試驗
 
  硫酸浸沒不銹鋼復合管護欄試驗能把302和304與316和317區(qū)分開來。試樣的切邊應經過細磨,然后在體積濃度為20~30%、溫度為60~66℃的硝酸(比重為1.42)中清洗和鈍化半小時。
 
  硫酸試驗溶液的體積濃度為10%,加熱到71℃當.302和304鋼浸入這種熱溶液中時,被迅速腐蝕并產生大量氣泡,試樣在幾分鐘內變黑;而316和317鋼的試樣則不受腐蝕或反應很慢(不產生氣泡),試樣在10~15分鐘內不變色。如果采用同時試驗具有已知成分的試樣來進行近似比較的話,可使試驗更為準確。

公司/公司是專業(yè)經營:不銹鋼復合管護欄,不銹鋼復合管護欄板、不銹鋼棒、不銹鋼扁鋼、不銹鋼角鋼、不銹鋼復合管護欄件等配件。生產鋼管的直徑可從直徑6mm-377mm;壁厚可從0.5mm-45mm。產品符合《結構用不銹鋼不銹鋼復合管護欄(GB/TI4975-94)》和《流體輸送用無縫不銹鋼復合管護欄(GB/T14976-94)》國家標準,執(zhí)行美標ASTM A269 ASTM A213 ASTM A312。并被廣泛地應用于機械設備、化工、醫(yī)療、汽車和儀表等行業(yè)。本公司產品主要用于石油、化工、醫(yī)藥、造紙、食品、核電、軍工、機械、造船、鍋爐等行業(yè)及領域,市場覆蓋全國各個地區(qū)的大中型企業(yè)和重點項目。公司的產品暢銷國內、國外20多個國家地區(qū),深受用戶好評。 
    公司是一家專業(yè)生產特優(yōu)不銹鋼材料的大型民營集團型企業(yè),為保持永續(xù)經營,全力推行現(xiàn)代企業(yè)經營理念,以科學的管理模式,雄厚的技術力量和資金儲備,廣泛的銷售網絡,完備的工藝與基礎設施建設,有效的保證了企業(yè)的發(fā)展后勁。公司采用的20噸EF電…

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