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我所锅炉房原有容积15米~3的水箱四个.贮存软水(硬度<0.1德国度)和蒸汽回水,水温18～48℃。1964年投入使用,由于无除氧设备,腐蚀较严重,挂片试验测定腐蚀率约1毫米/年。水箱每年都要除锈刷涂料,有两个水箱已在1978年报废。1980年,我们对另两个水箱进行彻底除锈,并涂上涂料,对其中一个水箱施行外加电流阴极保护,另一个不保护,以作比较。根据实验测定的保护度曲线,保护电位以-1.0伏最好,但考虑到锅炉处在最高水位时,水泵出口水不进锅炉,而是通过循环
My original boiler room volume of 15 meters to 3 of the four storage soft water (hardness <0.1 Germany) and steam backwater, water temperature 18 ~ 48 ℃. Put into use in 1964, due to no deoxygenation equipment, corrosion is more serious, coupon test measured corrosion rate of about 1 mm / year. Every year rust paint brush water tank, two tanks have been scrapped in 1978. In 1980, we thoroughly derust the other two tanks, coated them with paint, applied a cathodic protection against one of the tanks, and the other unprotected for comparison. According to the experimental determination of the degree of protection curve, the protection potential of -1.0 volts is best, but taking into account the boiler at the highest water level, the water pump outlet does not enter the boiler, but through the cycle