首頁 >> 新聞中心 >> GB/T 21839-2019預應力混凝土用鋼材應力腐蝕試驗機Prestressing Concrete Steel Stress Corrosion Tester
GB/T 21839-2019預應力混凝土用鋼材應力腐蝕試驗：6個鋼材試件用于應力腐蝕試驗，測定鋼材在一恒定拉力情況下，浸在給定的恒定溫度的硫氰酸鹽溶液中直至斷裂時所用的時間。HRJ Tester剛性機架試驗機，載荷作用于封閉框架的水平方向。時間測量裝置0.01h分辨率，自動控制、停止、保留、記錄斷裂時間，精確度±0.1h。HRJ Tester；圓柱形溶液腐蝕容器，進口容器材料耐高溫、耐腐蝕，兩端緊密封閉，無泄漏，保證無空氣進入。試樣直徑≤19mm，試驗容器內徑＞70mm，試樣直徑19＜d≤50mm，試驗容器內徑＞100mm。
50kN～1000kN鋼材應力腐蝕試驗機，浸在溶液中鋼材應力腐蝕試樣長度Le＞200mm，至少50mm長的部分應用塗漆等防止腐蝕的方法進行防護。HRJ Tester；每次測試時溶液都要重新更換，試驗溶液預先加熱到50℃～55溫度，再注入容器中。溶液體積應保證沿著試樣長度每平方厘米表面有5mL。溶液填充應在1min內完成，然後計時裝置開始計時t0。測試中溶液不能循環流動。
鋼材應力腐蝕試驗，在時間t0到（t0+5）min內，對于鋼絲及鋼絞線溶液的溫度應調整到（50±1）℃；對于鋼棒溶液溫度應調整到（50±2）℃；在試驗中溫度應保持在相應溫度範圍內。HRJ Tester；在試樣發生斷裂或達到規定時間時，試驗被認爲完成。jnshiyanji.com；在測試鋼絞線時，當鋼絲發生斷裂時試驗終止。如果試樣的斷裂發生在測試長度L0以外，試驗判定無效。
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濟南恒瑞金試驗機有限公司；應力腐蝕試驗機制造商；山東省力值硬度計量委員
（試驗機服務中心）（試驗機配件供應中心）（特殊夾具定制中心）
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