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SECTION 6: METAL CUTTING
Workpiece
Inspection
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kZgi^XVa bZiVa Xjii^c\ WVcYhVl0 ^chiZVY! V Y^[[Zg"
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Before cutting, inspect the material for any of
the following conditions and take the neces-
sary precautions:
Small or Thin Workpieces: HbVaa dg i]^c
ldg`e^ZXZh VgZ YVc\Zgdjh id Xji ^[ ]ZaY
Wn ]VcY·Vkd^Y Xjii^c\ i]ZhZ ldg`e^ZXZh
^[ edhh^WaZ# >[ ndj bjhi Xji V hbVaa dg i]^c
ldg`e^ZXZ! ViiVX] ^i id dg XaVbe ^i WZilZZc
aVg\ZghXgVee^ZXZhi]Vil^aaWdi]hjeedgii]Z
ldg`e^ZXZi]gdj\]i]ZXjiVcY`ZZendjg[^c"
\Zgh VlVn [gdb i]Z WaVYZ# HdbZ i]^c h]ZZi
bZiVahl^aacdil^i]hiVcYi]Z[dgXZh[gdbi]^h
WVcYhVlYjg^c\Xjii^c\0^chiZVY!jhZVh]ZVg!
c^WWaZgh!dgh]ZZibZiVac^eeZghidXjii]ZhZ
e^ZXZh#
Round/Unstable Workpieces: Ldg`e^ZXZh
i]Vi XVccdi WZ egdeZgan hjeedgiZY dg hiVW^"
a^oZY l^i]dji V k^hZ h]djaY cdi WZ Xji dc V
kZgi^XVa bZiVa"Xjii^c\ WVcYhVl# :mVbeaZh
VgZ X]V^ch! XVWaZh! gdjcY dg dWadc\"h]VeZY
ldg`e^ZXZh!ldg`e^ZXZhl^i]^ciZgcVadgWj^ai"
^cbdk^c\dggdiVi^c\eVgih!ZiX#
Material Hardness: 6alVnh[VXidg^ci]Z]VgY"
cZhhd[i]ZbZiVaWZ[dgZXjii^c\^i#=VgYZcZY
bZiVah l^aa iV`Z adc\Zg id Xji! bVn gZfj^gZ
ajWg^XVi^dc!VcYbVngZfj^gZ V Y^[[ZgZci ineZ
d[WaVYZ^cdgYZgidZ[[^X^ZcianXjii]Zb#
Tanks, Cylinders, Containers, Valves, Etc:
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^oZY dg XdciV^c \VhhZh dga^fj^YhXVcXVjhZ
Zmeadh^dch! [^gZh! XVjhi^X Wjgch! dg bVX]^cZ
YVbV\Z#6kd^YXjii^c\Vcnd[i]ZhZineZhd[
XdciV^cZghjcaZhhndj]VkZ kZg^[^ZY i]Vi i]Z
XdciV^cZg^hZbeinVcY^iXVcWZegdeZganhje"
edgiZYYjg^c\VXji#
Magnesium: EjgZ bV\cZh^jb Wjgch ZVh"
^an#8jii^c\bV\cZh^jbl^i]VYjaaWaVYZXVc
XgZViZ Zcdj\] [g^Xi^dc id ^\c^iZ i]Z hbVaa
bV\cZh^jb X]^eh ^cid V [^gZ# 6kd^Y Xjii^c\
bV\cZh^jb^[edhh^WaZ#
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XVccZVgWnVcYhfj^gii]ZWaVYZcZVgi]ZXji"
i^c\VgZVl]Zc^i\Zih]didgndjhZZVhbVaa
Vbdjci d[ hbd`Z# 9^[[ZgZci bZiVah gZfj^gZ
Y^[[ZgZciineZhVcYVbdjcihd[ajWg^XVi^dc#
GZeaVXZ!h]VgeZc!VcYXaZVcWaVYZhVhcZX"
ZhhVgn# BV`Z VY_jhibZcih eZg^dY^XVaan id
`ZZei]ZhVlgjcc^c\^cideXdcY^i^dc#
JhZ a^\]i VcY ZkZc egZhhjgZ l]^aZ Xjii^c\#
A^\]iXdciVXil^i]i]Z WaVYZ bV`Zh^iZVh^Zg
id[daadla^cZhVcYegZkZcihZmigV[g^Xi^dc#
6kd^Yil^hi^c\i]ZWaVYZl]ZcXjii^c\VgdjcY
i^\]iXdgcZgh#6aadli]ZWaVYZidhVlVgdjcY
i]ZXdgcZgh#
B^hjh^c\ i]Z hVl dg jh^c\ ^cXdggZXi iZX]"
c^fjZh ^h jchV[Z VcY gZhjaih ^c eddg Xjih#
GZbZbWZg·i]ZWaVYZYdZhi]ZXjii^c\l^i]
i]ZdeZgVidg»h\j^YVcXZ#
CZkZg hiVgi V Xji l^i] i]Z WaVYZ ^c XdciVXi
l^i]i]Zldg`e^ZXZ!VcYYdcdihiVgiVXjidc
Vh]VgeZY\Z#
EVn ViiZci^dc id i]Z X]VgVXiZg^hi^Xh d[ i]Z
X]^ehl]ZcXjii^c\·i]ZnVgZ\ddY^cY^XVidgh
d[ egdeZg WaVYZ heZZY VcY [ZZY gViZ# Page
40h]dlhi]ZWVh^X X]^e X]VgVXiZg^hi^Xh VcY
l]Vii]ZnbZVc#
JhZi]Zg^\]iWaVYZ[dgi]ZXjii^c\iVh`#
Cutting Tips