Thomas ZIP 22 - MATERIAL CLASSIFICATION AND CHOICE OF TOOL; Definition of materials; Selecting blade; Teeth pitch

13
ZIP 22
Thickness in mm (S) Continuous Toothing Alternate Toothing
up to 1,5mm Z=14 Z=10/14
from 1 to 2 Z=8 Z=8/12
from 2 to 3 Z=6 Z=6/10
from 3 to 5 Z=6 Z=5/8
from 4 to 6 Z=6 Z=4/6
more than 6 Z=4 Z=4/6
Standard /
Materialien
(I)
UNI
(D)
DIN
(F)
AFNOR
(GB)
SB
USA
AISI-SAE
Brinell
Härte HB
Rockwell
Härte HRB
R=N/mm2
Construction
steel
Fe360 Fe430
Fe510
St37 St44
St52
E24 E28
E36
43 50 116 148 180 67 80 88 360÷480
430÷560
510÷660
Non Alloy Steel C20 C40 C50
C60
CK20 CK40
CK50 CK60
XC20
XC42H1
XC55
060 A 20 060
A 40 060
A 62
1020 1040
1050 1060
198 198
202 202
93 93 94 94 540÷690
700÷840
760÷900
830÷980
Spring Steel 50CrV4
60SiCr8
50CrV4
60SiCr7
50CV4 735 A 50 6150 9262 207 224 95 98 1140÷1330
1220÷1400
Alloy Steel for
Hardening
35CrMo4
39NiCrMo4
41CrAlMo7
34CrMo4
36CrNiMo4
41CrAlMo7
35CD4
39NCD4
40CADG12
708 A 37 905
M 39
4135 9840 220 228
232
98 99 100 780÷930
880÷1080
930÷1130
Alloy Einsatzstahl 18NiCrMo7
20NiCrMo2
21NiCrMo2 20NCD7
20NCD2
En 325 805
H 20
4320 4315 232 224 100 98 760÷1030
690÷980
Steel for Bea-
rings
100Cr6 100Cr6 100C6 534 A 99 52100 207 95 690÷980
Tool Steel 52NiCrMo-
KU C100KU
X210Cr13KU
58SiMo8KU
56NiCrMo
C100W1
X2210Cr12
Z200C12
Y60SC7
BS 1 BD2 -
BD3
S-1 D6 - D3
S5
244 212
252 244
102 96 103
102
800÷1030
710÷980
820÷1060
800÷1030
Stainless Steel X12Cr13
X5CrNi1810
X8CrNi1910
X8CrNiMo171
4001 4301
4401
Z5CN18.09
Z6CDN17.1
304 C 12
316 S 16
410 304 316 202 94 670÷885
590÷685
540÷685
490÷685
Kupferlegierung
Spezialmessing
Bronze
Aluminium-Kupferlegierungen G-CuAl11Fe4Ni4 UNI 5275 Spezialmessing
mit Mangan/Silizium G-CuZn36Si1Pb1 UNI 5038 Manganbronze SAE43 -
SAE430 Phosphorbronze G-CuSn12 UNI 7013/2a
220 140
120 100
98 77 69 56,5 620÷885
375÷440
320÷410
265÷314
Since the aim is to obtain excellent cutting quality, the various
parameters such as hardness of the material, shape and
thickness, transverse cutting section of the part to be cut,
selection of the type of cutting blade, cutting speed and
control of saw frame lowering.Thesespecicationsmust
therefore be harmoniously combined in a single operating
condition according to practical considerations and common
sense, so as to achieve an optimum condition that does
not require countless operations to prepare the machine
when there are many variations in the job to be performed.
The various problems that crop up from time to time will be
solved more easily if the operator has a good knoledge of
thesespecications.
WE THEREFORE RECOMMEND YOU TO ALWAYS USE
GENUINE "THOMAS" SPARE BLADES THAT GUARANTEE
SUPERIOR QUALITY AND PERFORMANCE.
9.1 - Denition of materials
The table at the foot of the page lists the characteristics of the
materials to be cut, so as to choose the right tool to use.
9.2 - Selecting blade
First of all the pitch of the teeth must be chosen, in the other
words, the number of teeth per inch (25,4 mm) suitable for the
9
MATERIAL
CLASSIFICATION AND
CHOICE OF TOOL
material to be cut, according to these criteria:
- partswithathinand/orvariablesectionsuchasproles,pipes
and plate, need close toothing, so that the number of teeth used
simultaneouslyincuttingisfrom3to6;
- parts with large transverse sections and solid sections need
widely spaced toothing to allow for the greater volume of the
chipsandbettertoothpenetration;
- parts made of soft material or plastic (light alloys, mild bronze,
teon,wood,etc.)alsorequirewidelyspacedtoothing;
- pieces cut in bundles require combo tooth design.
9.3 - Teeth pitch
As already stated, this depends on the following factors:
- hardness of the material
- dimensions of the section
- thickness of the wall.