Sav 244.01, Руководство по эксплуатации

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SAV 244 .01 / .03 / .06 /
.07 / .10 / .11
3. TECHNICAL SPECIFICATIONS
Holding force, alloy and heat treatment
High magnetic flux values and therefore the highest holding forces can be achieved in technically pure iron.
In practical application, a number of materials with different magnetic characteristics are used.
In addition to this, heat treatments influence the magnetising capacity of workpieces as this is altered by the
physical structure of the materials. Hardened workpieces have poorer conduction of the magnetic flux.
100 %
53 %
58 %
ho
ld
ing f
or
ce i
n %
annealed
tool steel
hardened
tool steel
tempered
tool steel
0
10
20
30
40
50
60
70
80
90
100
ho
ld
ing f
or
ce i
n %
unmagnetised alloy component in %
0
20
40
60
80
100
0 10 20 30
Fig. 7: Influence of the unmagnetised alloy component
on the holding forces
Short designation as per DIN Material no. Max. non-magnetic alloy component Heat treatment Holding force
Pure iron
Fe – 0.00 % soft 100 %
Construction steel
St37-2 1.0037 – soft 95 %
St52-3 N 1.0570 – soft 93 %
St50-2 1.0050 – soft 75 %
Case-hardened steel
C10 1.0301 1.22 % soft 93 %
C15 1.0401 1.27 % soft 93 %
17CrNiMo6 1.6587 5.43 % soft 72 %
16MnCr5 1.7131 3.06 % soft 83 %
20MnCr5 1.7149 3.40 % soft 82 %
C10 1.0301 1.22 % case-hardened 48 %
C15 1.0401 1.27 % case-hardened 48 %
17CrNiMo6 1.6587 5.43 % case-hardened 38 %
16MnCr5 1.7131 3.06 % case-hardened 43 %
20MnCr5 1.7149 3.40 % case-hardened 42 %
Nitriding steel
34CrAl6 1.8504 4.29 % untreated 77 %
31CrMoV9 1.8519 4.65 % untreated 76 %
34CrAlNi7 1.8550 5.93 % untreated 70 %
39CrMoV13-9 1.8523 6.44 % untreated 68 %
Fig. 8: Influence of the heat treatment condition on the
holding forces (example)