| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a filtering machine with excellent in corrosion resistance which is used for separating a matter to be filtered from an aqueous mixture of 80°C or more that includes a chloride ion-containing aqueous solution and the matter to be filtered. <P>SOLUTION: In the filtering machine, at least a part which comes into contact with the aqueous mixture is made of stainless steel. As the chemical composition of the stainless steel, carbon content is >0 and ≤0.030 wt.%; silicon content is >0 and ≤0.80 wt.%; manganese content is ≥0 and ≤1.00 wt.%; phosphorus content is >0 and ≤0.030 wt.%; sulfur content is ≥0 and ≤0.020 wt.%; chromium content is ≥24.00 wt.% and ≤26.00 wt.%; nickel content is ≥6.00 w.% and ≤8.00 wt.%, molybdenum content is ≥2.50 wt.% and ≤3.50 wt.%; copper content is ≥0.20 wt.% and ≤0.80 wt.%; tungsten content is ≥1.50 wt.% and ≤2.50 wt.%; nitrogen content is ≥0.24 wt.% and ≤0.32 wt.% (the remainder is iron and total chemical composition including iron becomes 100 wt.%). <P>COPYRIGHT: (C)2012,JPO&INPIT |
