Page 70 - PCMI Journal July 2018

Issue 131
July 2018
PCMI Journal
69
μm
0
5 7 9 11 13 15 17 19 21 23 25
Araz Ardehali Barani | Manager Development and Quality Precision Strip Zapp Precision Metals GmbH | DE | The Effect of Metallurgical Features on the Etching Performance of Stainless Steels and Iron Nickel Alloys
PCMI 2018: The effect of metallurgical features on the etching performance of stainless steels and iron nickel alloys
Surface roughness of modification 3 highest
_ Modification 2 and 3 exhibit enhanced mechanical properties and at the same time corrosion properties,
_ but the surface roughness after the same amount of removal by etching is higher. _ Thus a new modification was developed to combine the lessons learned and generate
the best mechanical properties and good surface results after etching.
1 )10
0,9 m9 μ
(t )0,8 R8
m eli
μ( 0 , 7 f7 a or Rp ss s0,6 s6 ee nn h0,5 h5 gg uu oo r0,4 r4 ef go ar 0 , 3 t 3 e hg vi a0,2 e2
h
l
0 , 1 at 1
00
5 7 9 11 13 15 17 19 21 23 25 1
Etching depth (percentage of thickness)
modification 1 modification 2 modification 3
May 14, 2018 | Technology PRECISION STRIP | Araz Barani | Page 18
2 3
4 5 6 7 8
Etching time (minutes)
9
PCMI 2018: The effect of metallurgical features on the etching performance of stainless steels and iron nickel alloys
Surface & wear could both be improved by further optimization of heat treatment and microstructure!modification 4
standard product
modification 1 modification 2
upgrade no. 1
modification 3 modification 4
upgrade no. 2
upgrade no. 3
1 mm
)10
m9 μ (t
R8 e
l
i
f o7 r
p
s s6 e n h5 g u o4 r
f
o t3 h g
i e2 h
l
a t1 o
t
modification 4 exhibits
lowest roughness profile after etching
... and the highest wear resistance
May 14, 2018 | Technology PRECISION STRIP | Araz Barani | Page 19
o
t
Etching depth (percentage of thickness)
modification 1 modification 2 modification 3
5/31/18
2