materials & finishes[1]

7/27/2019 Materials & Finishes[1]

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Mechanical Design Department

Design Standards & Practices

Materials & Finishes

Materials & Finishes..........................................................................................................1

Material Selection.........................................................................................................2

Bosch Extrusion............................................................................................................3

Processing of Bosch Extrusion...................................................................................3

Carbide and custom punches.......................................................................................4

inishes...........................................................................................................................!

Finishing and tank sizes .............................................................................................6

Electropolished Sur"aces..............................................................................................#

21546698.doc 1!e" date #e$t 11% 2&&6


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Material Selection

1. 'se stock (ateria) sizes *hen e"er $ossi+)e to e)i(inate unnecessar,(achining -See $%3 a' Materials & Stoc( asteners ) on the Mechanical

*ebpage+Purchasing !a* /ateria)s0

2. hen reuiring too) stee)% 1 distorts *hen heat treating and thus $ro+)e(s*ith not enough (ateria) )eft for grinding% on), use 1 *hen ,ou need

so(ething +etter than (i)d stee) +ut do not reuire heat treating. ," heat

treatment o" tool steel is necessar- than use 2. f in uestion consu)t ,oursu$er"isor.

3. !adia) +earing shafting shou)d +e (ade fro( ho($son7na7Barden or

#u$erior #hafting de$ending on the a$$)ication. ertain a$$)ications *i))

reuire the use of #tress Proof #tee) or 1 -*i)) reuire a )ot of *ork forfinishing

4. here"er $ossi+)e use )u(inu(% it *i)) sa"e ti(e and (one,. # uses it in

se"era) for(s% 6&616 )u(inu(% 6&616 cracut )u(inu( -accurate),

cut to *idth% ast )u(inu( oo)ing P)ate -)ess susce$ti+)e to *ar$age% f)atand tight to)erance in thickness% and )u(inu( ang)e. hen +ending

a)u(inu( use 3&&3:14 not 6&616. )) of the a+o"e (ateria)s ha"e uniue

to)erances -see ; under re$orts ? shortcut to$urchasing ra* (ateria)s@.

5. he hardness for too) stee)s *i)) +e )i(ited to three +asic grou$s do not s$ecif,

an,thing outside these grou$s un)ess a+so)ute), necessar,A

1. ! 4446 'sed *hen $art shou)d +e tough +ut not necessari), hard.

-i.e. shafts% $ins% etc.2. ! 5456 enera) $ur$ose *ear ite(s.

-i.e. gi+s% s)ides% co"er $)ates% "s)ides for he$co ro))ers%

etc.3. ! 6&62 :ea", *ear surfaces.

-i.e. cutters% $unches% for(ing too)s% etc.

6. he to)erances of (ateria) stock (ust +e considered in a)) too) designs. -see

;!e$orts on ne*Co+ :fi)e -> under


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9. :ot !o))ed #tee) *i)) +e ordered either +)anchard ground or sand +)asted.


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Carbide and custom punches

1. )) car+ide co($onents *i)) +e done outside. n /E: *hen creating the

record $)ease $ut ar+ide under the (anufacturer and then for descri$tionca))out $art na(e $er # ar+idePart I> &&1 -!e" if needed

est $er # usto( Punch

Part I> &&1 -!e" if needed 2 $er #


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$inishes

1. )) (ateria)s% if a$$)ica+)e% *i)) s$ecif, a finish. he finish is s$ecified during

the +a))ooning $rocedure and is noted on the detai) dra*ing. $tions for the(ateria) finish is $ro"ided during the +a))ooning $rocedure.

2. he fo))o*ing chart s$ecifies the standard # finishes. he standard finishes

are a)so detai)ed in the ;# .&&&2 .&&&5 inch

nodize> .&&&2 .&&&4 inch

B)ack xide> .&&&1 .&&&2 inchicke) f)ash> .&&&5 .&&1& inch

E)ectro)ess icke)> .&&&4 .&&&5 inch -$er #/ B33% ,$e 4% #2% )ass 1

:ard nodize> .&&&5 .&&&8 inch

4. n the design of gauges or setu$ too)s *here there is high to)erance $ieces

finish the $ieces *ith B)ack xide.

5. he finishes s$ecified do not reuire a $rocess s$ecification. he sho$ hasdetai)ed $rocedures for the finishing $rocesses.

6. ertain custo(ers *i)) reuire their co)or finishes for $ainted co($onents.

his *i)) +e detai)ed in the ;


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. ertain a$$)ications reuire case hardening rather that heat treat. hese are

reuired for ite(s that reuire surface hardening% +ut (a, not *ar$ i.e. in)ines.

Exa($)es of case hardening are>

rcorP: si(i)ar to tenifer% +ut can go dee$er *ith the hardening -u$ to .&&2dee$

enifer 7 rinide -u$ to .&&&2 dee$

itaniu( itride - -u$ to .&&&2 dee$

8. e)d(ent dra*ings need to indicate surfaces that are not to +e $ainted.

Finishing and tank sizes

Process *or(ing rea o"

an( 1inches5

*eight estrictions 1lbs5

)ear nodize 2& x 5& x 92 2%&&&

B)ack nodize 2& x 5& x 92 2%&&&

:ard nodize 2& x 5& x 92 2%&&&

B)ack xide

(Ampere Metal Finishing)

(ATS Systems)

24 x 4& x 18&

23 x 23 x 24

2&&&

:ard hro(e 48 x 48 x 12& 1%5&&

icke) F)ash 24 x 82 x 92 1%5&&

E)ectro)ess icke)Metalon Technologies (steel)

Metalon Technologies

(aluminum)General Magnaplate

(Industrial Processing)

36 x 48 x 49

16 x 24 x 32

48 x 6& x 96

12 x 36 x 54

6%&&&

4%&&&

4&&

21546698.doc 6!e" date #e$t 11% 2&&6


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Electropolished Surfaces

-nsert fro( #/38&

E)ectro$o)ished surfaces are extre(e), s(ooth% (acrosco$ica)), f)at% (icrosco$ica)),

feature)ess% and exhi+it high high )uster% ref)ecti"it, and +rightness. E)ectro$o)ishingsu+stantia)), reduces the surface area a"ai)a+)e for conta(ination $icku$ and e)i(inates

a)) (icrocracks and interna) cre"ices.

o($arison a+)e

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