兰州石化公司催化剂厂分子筛车间的桨式干燥器，其桨叶发生了腐蚀开裂，经分析为焊缝晶间腐蚀和磨蚀。
The corrosion cracking occurs on the blades of pedal type dryer in the molecular sieve workshop of Catalyst Factory of Lanzhou Petrochemical Company.
与不加稀土时相比，焊缝中沿晶界析出碳化物的尺寸减小、数量减少、析出形态由网状析出变为不连续的颗粒状，抗晶间腐蚀能力得到提高。
Intergranular corrosion resistance was increased owing to the lessening of carbide particles formed at austenite grain boundaries and morphology changing from reticular to granular.
由于焊接过程中受到敏化温度影响，焊缝的耐晶间腐蚀性要比母材差。
Because the welding is affected by sensitive temperature, the intergranular corrosion resistance of weld metal is worse than that of base metal.
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