Blanking fino: o guia definitivo

Fine blanking: the definitive guide

Fine suppression

07 Selection of fine materials for molding

1 . Selection principle

It is important to meet the functional requirements of finely finished parts while also considering cost-benefit. This involves considering factors such as material type and availability, dimensional tolerances, surface quality and the level of difficulty in obtaining an accurate cut.

two . Variety of materials

Ferrous metals include: mild steel (C≤0.13%); non-alloy steel (0.12-1.0%C); alloy steel (0.15-0.20%C); stainless steel (C≤0.15%); fine grain steel (0.10-0.22%C).

Non-ferrous metals include: copper and copper alloys; aluminum and aluminum alloy.

Related Reading: Ferrous vs Non-Ferrous Metals

3. Offer status

For steel requirements:

  1. Supply types: hot-rolled strip, cold-rolled strip, flat bar, but in different states, it has annealed, soften annealed, spheroidal annealed, etc.
  2. Size: is determined by the die design.
  3. Thickness tolerance: Must be consistent with the parts.
  4. Surface quality: Different lamination methods allow you to obtain different surface qualities, such as pickling, sandblasting, pickling, cold lamination, etc.
  5. Metallographic organization: according to the requirements of the product parts, it is divided into three levels:

FSG I: Maximum tensile strength, without requirement from the metallurgical organization.

FSG II: after annealing treatment, material C>0.15%, containing about 80-90% spherical carburizing bodies.

FSGIII: Softened and annealed, material C>0.15%, containing approximately 100% spherical carburizing body.

For non-ferrous metals, copper, aluminum and their alloys have requirements for chemical composition and rolling state.

4 . Fine Suppression Assessment

The evaluation of fine cutting materials and their selection is shown in Table 5.

Steel Grade Maximum suppression thickness Fine blanking performance evaluation
China (YB) USA (AISI) Germany (DIN) Japan (JIS) Soviet Union (rOCT)
08 1008 15 1
10 1010 C10 S10C #10 15 1
15 1015 C15 S15C #15 12 1
20 1020 C22 S20C #20 10 1
25 1025 S25C #25 10 1
30 1030 S30C #30 10 1
35 1035 C35 S35C #35 8 two
40 1040 S40C #40 7 two
45 1045 C45 S45C #45 7 two
50 1050 CK53 S50C #50 6 two
55 1055 Cf56 S55C #55 6 two
60 1060 C60 SWRH4B #60 5 two
1064 CK60 S58C 6
65 1065 CK67 SUP2 #65 3
70 1070 3 two
1074 C75 3
T8A C85W2 SKU3 Y8A 3
T10A W1-0.8C 3 3
15Mn/16Mn 8 3
15CrMn 16MnCr5 15XI 5 two
14Ni6 8 two
14NiCr10 SNC21H 7
E3316 14NiCr14 SNC22H 7
14NiCr18 7
15CrNi6 6
18CrNi8 5
4317 17CrNiMo6 5
15 cr 15Cr3 SCr21 15X 5 two
15CrMo5 4
20CrMo 4118 20CrMo5 SCM22 20XM 4 two
20CrMo 20MnCr5 4.5 two
20MnMo 8 two
42Mn2V 42MnV7 6 two
GCr15 E52100 100Cr6 SUJZ IIIX15 6 3
0Cr13 410 X7Cr13
1Ch13 403 X10Cr13 SUS21 1X13
4Ch13 X40Cr13 4X13
Cr17 430 X8Cr17 SUS24 X17
0Cr18Ni9 304L X5CrNi189 SUS27 0X18H9
1Cr18Ni9 302 X12CrNi188 SUS40 1X18H9
1Cr18Ni9Ti 321 X10CrNiTi189 SUS29 1X18H9T
304L X2Crni189 SUS28CP
X8CrNi1212
301 X12CrNi177 SUS39CP
X2NiCr1816

Grades:

  1. Very good, ideal fine cutting material with high cutting surface fineness and long die life.
  2. Suitable fine cutting material, with cutting surface smoothness and normal die life.
  3. Quite good cutting material – not very thin, when used for complicated shaped parts, the cutting surface is torn and the die life is short.

Conteúdo relacionado

Back to blog

Leave a comment

Please note, comments need to be approved before they are published.