The influence of initial condensation zone temperature and pH value on corrosion inhibitor effect have been analyzed as well.
对初凝区的温度、pH值对缓蚀剂缓蚀效果的影响进行了分析。
Some investigations show that the corrosion is resulted from acidic gas(CO_2、HCl、CH_3COOH),which dissolves in nascent condensation drips.
5 mg/L之间变化时初凝水滴的pH值,由10幅图形表示计算结果,并分析了初凝区的腐蚀过程机理,及应该采取的措施。
The initial solidification phenomena of low carbon steel,which solidifies with a hypoperitectic reaction in the continuous casting,have been modeled.
为了模拟连铸过程中具有亚包晶反应的低碳钢的初期凝固现象,利用浸渍实验,测量了铸坯的二次树枝晶间距;利用有限元的一维传热汁算,求得冷却速度与二次树枝晶间距的关系式;探讨了传热阻力等参数对铸坯的冷却速度、凝固不均一度的影响。
The temperature fields and stress fields of initial solidification shell in the mould of smooth and groove were calculated,the difference between the tWo condition was analyzed and effect to dritial solidiflcation process caused by model of grooves was stUdied .
以初期凝固坯壳为研究对象，在结晶器内壁纵向划分沟槽，建立数学模型，计算划分沟槽与不划分沟槽结晶器内铸坯的温度场和应力场，研究沟槽内壁结晶器对铸坯初期凝固过程的影响。
A new method for measuring initial setting time of roller compacted concrete;
碾压混凝土初凝时间测试新方法电动势法
The initial setting time is longer, 28d anti-flex and the strength of compression c.
研究结果表明:当各组分比例适当时,通过核心元素的有效作用,在熟料掺量35%时可以配制出高效道路稳定层固结剂,其初凝时间较长,28d抗折和抗压强度分别可达7。
The paper indicates that the preparation of a new kind of consolidator can be achieved by comparing tests, when phosphate slag and slag were mixed to the clinker in terms of a special ratio, which shows good properties of longer initial setting time and 7.
研究结果表明,在本试验条件下,当各组分比例适当时,通过核心元素的有效作用,在熟料掺量35%时可以配制出高效道路稳定层胶结料,其初凝时间较长,28d抗折和抗压强度分别可达7。