不锈钢腐蚀的信息

Hini 02.10.13 Information about stainless steel corrosion resistance 有关 不锈钢腐蚀的信息 1. Chloride concentration (mg/l) in wastewater 污水中氯离子含量 V2A / 304, 304L max. 200 mg/l V2A / 304, 304L where detention time is or has been 停留时间 5 h max. 150 mg/l (because sulphide can be generated under septic conditions 因为在腐败的条件下会 产生硫化物) V4A / 316L, 316 Ti max. 400 mg/l 2. pH value of sewage 污水的 pH 值 V2A / 304 and V4A / 316) min. 6.5 3. Chloride concentration (mg/l) in the service water / potable water 清洗水/饮用水中 氯离子的含量 V2A / 301, 304L max. 100 mg/l V4A / 316L, 316Ti max. 250 mg/l pH-value min. 7.0 4. Iron concentration (mg/l) in the service water 清洗水中铁的浓度 max. 2 mg/l (iron ions are corrosive, particularly in combination with chloride!铁离子腐蚀，尤其是与氯 离子结合) 5. Hydrogen sulfide in the wastewater channel (H2S)硫化物在污水中的含量 set 100 mg/l can occur, spray nozzles should be provided in enclosed spaces (e.g. covered tanks) for headspace washing. 当某些地方氯化物100mg/L 时能产生或释放硫化氢，喷嘴应放置在封闭的空间（也就 是盖罩内）用于顶部冲洗。 7. In case of pump feeding 如果有泵的进水 Hini 02.10.13 Detention time depends on feed flow and pumping intervals. Detention time in pump wells should be taken into account. 停留时间依据泵的流量和抽水间隔。在集水井的停留时间应该计算。 Provide forced air exchange / ventilation with air exchange of about 10 times per hour (preventive means for odor control, e.g. biological filter may be required). 加强换气/通风大约每小时 10 次（也就是说臭气控制，需要配套生物过滤器）。 Enclosed tanks or channels may require additional spray nozzles for headspace washing. Information about special stainless steel applications 特种 不锈钢的应用信息 Installations at high temperature 安装在较高温度下 ( 40 C; 104 F) Possible impacts on the product function 可能对产品功能的影响 : Problems due to excessive thermal expansion 由于过度的热膨胀 Mechanical problems caused by encrustation of dried material (e.g. screenings or grit) 干物质的结壳导致机械故障（栅渣或者砂砾） Increased danger of corrosion: e.g. at 70 C (158 F) the permissible chloride concentration is only 50 % in comparison to 20 C (68 F). 增加腐蚀的风险：与 70 C (158 F)相比容许的氯化物仅为 20 C (68 F)时的一半。 Remedies 处理办法 : Install product/machine/control panel indoors or prevent direct exposure to sunlight 将设备/机器/控制柜安装在室内或者预防直接暴露在阳光下。 Provide air conditioning / cooling 提供空气调节/冷却 Use products / components that are less affected by extreme temperature or temperature changes 使用的产品/配件受极端气温或温度变化影响较小。 Hini 02.10.13 Provide thermal insulation of product/machine/control panel. 提供热量隔绝的产品/机器/控制柜。 Installations near the sea 安装在海边 High chloride concentrations in the atmosphere can cause stainless steel corrosion. 空气 中的高氯化物导致不锈钢腐蚀。 Remedies 处理办法 : Provide products made from V4A / 316Ti, 316L. 提供产品材质为 V4A / 316Ti, 316L。 Provide stainless steel covers of material V4A / 316Ti, 316L with higher resistance against chloride corrosion. 提供不锈钢盖罩材质 V4A / 316Ti, 316L Provide covers of another material that is chloride resistant. 提供其他材质的盖罩有效阻止氯化物。 Hini 02.10.13 Stainless steel application questionaire 不锈钢应用调查 1. Chloride concentration (mg/l) in wastewater 污水中氯化物的浓度 Maximum 最大值 mg/l Average 平均值 mg/l Minimum pH-value 最小 pH 值 . 2. Chloride concentration (mg/l) in service water / potable water 冲洗水/饮用水中氯离子浓度 Maximum 最大值 . mg/l Average 平均值 mg/l Minimum pH-value 最小 pH 值 . 3. Iron concentration in service water 冲洗水中铁含量 yes / no . Maximum 最大值 . mg/l 4. Sulphur concentration (mg/l) in wastewater 污水中硫化物的浓度 Maximum 最大值 . mg/l Average 平均值 mg/l 5. Hydrogen sulfide in the wastewater channel (H2S)污水沟渠内硫化氢浓度 ppm 6. Maximum detention time of waste water, flow times in sewer . h 污水最大的停留时间，污水管道的流出时间 7. Pump feed yes / no 水泵供水 8. In case of pump feed: is forced ventilation provided? yes / no 水泵供水：是否有通风设备？ 9. Has customer / contractor: 顾客/代理商： Knowledge of stainless steel corrosion?有不锈钢腐蚀的相关经验? yes / no Knowledge about correct storage of stainless steel products?有正确的不锈钢仓储的经验？ yes / no Knowledge about correct contr