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德国机械设备制造业联合会(VDMA)的液压密封培训教材，ppt格式，一共19个压缩包。目录如下：0 u( v; d8 G+ |$ @
3 C- k8 x9 \: Y( w! V2 vBasics of Sealing Technology 6 V# Y; C4 P- F
$ ?5 H* H) e2 @) U
Application fields for fluid seals; X/ j% W3 \- q+ k
2 _5 c) J1 P7 s
1 X) l* g! q4 i' H& q# L6 y" z* X/ I: gSeal types
7 Z3 n1 s3 Y$ h8 B: i
: p6 \3 S" O* B! r4 W4 RSealing mechanism 8 Q0 m1 B. v+ G, V- e
% D. r- P/ E% M" u# s7 F
Friction # I( T! \5 Y- a& y
' f3 s" g2 ~" R0 O+ a. S0 EParameters influencing sealing mechanism and friction
: V7 E+ v& |; i! o2 Y
( f7 f$ t; {- k8 S4 `, i+ m! _- A" g b2 g: k4 c* w/ n
Sealing Materials
! f( n) f, g0 Y2 N+ L# E; J
, }6 R8 H. J& a. [# p& W F% GMaterial overview : A" m$ E& Z4 ^
( D6 A3 N( X+ ]* e' CThermoplastic elastomers 7 o6 Y& T3 z3 n0 R3 n
4 r; Y- I: t5 z/ U4 _Elastomers
+ N3 _9 w/ \& E9 y3 w% W2 G1 _) u8 e7 _; @
Thermoplastics
2 Z. W) _* {& L6 a9 D+ W
. l' r0 |1 p, n; B7 I$ w$ }- A) X+ v/ x" Y' I
Manufacturing Processes for Seals; H0 s9 J# t( Q' B& i# Y: z
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) {* C D q. m% \) L* HProcessing of rubber and rubber fabrics
Y8 z$ j: B5 N/ y4 y P9 w
4 I& S+ b8 s6 U7 Q9 W2 D0 EProcessing of plastics by injection moulding . W3 a' X6 A! ~! s( {/ i9 V7 N
5 Z/ U. R+ W2 \3 b4 VProcessing of PTFE 5 W8 g8 b9 e7 _. n* d8 H( C2 w0 G
3 @: z Y: x! [+ c& g5 BEngineering Design Guidelines
: N! b0 F6 c" m3 a2 f/ b% }# f, J& w7 m0 `/ Q. |( x
Introduction 7 D) e' n, B- q' n* h9 U
% m# w% t7 ~+ q
Basic function of the seal
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Seal assembly * R& `8 B' r3 k5 P6 _+ U) A# j
/ @) k% _. ?; @: E( t& aSealing surfaces
3 W. o8 C/ w: _8 D& P, \
. C4 q- W# }! t; Q9 b$ a9 ]) k+ [Gaps - I1 x: p! }5 O6 A& W
0 s7 T! y: z$ ]( H7 T4 Y% @% ]: s( JWipers/scrapers
( h* K/ D6 h! {2 B4 ^6 g9 a; u
$ }- l& Q' J# V# z: v" G# rFlow turbulences
c2 q v' b( E. q8 ] C/ J9 w4 c& M; F% i4 U
Excess pressure loads
3 i( g6 v* c7 H3 c/ K0 F% X* n ]9 v; ?% e
“Seal-friendly“ surfaces
5 ?9 B7 f9 T' D; b1 g' Z
3 v- U% F3 S; DConcentricity 0 R4 o3 C) ~' t% ?
. K( W8 G6 F0 wInstallation spaces for O-rings
% H" c7 y: l; D. N
5 X* w/ G6 r) o% i1 lInstallation spaces for lip seals 1 F8 ` S1 v$ m s
/ Y2 q' d# a+ T8 X) g1 j& pInstallation spaces for chevron packings
4 |9 X) v+ [$ H7 c5 T
2 Y* }! `/ r$ W6 o. sInstallation spaces rubber-activated coaxial seals5 k/ w- v8 |: Q1 c5 r
% L9 N5 F, I! i+ L8 d
" z2 \; K/ {) A# g, K1 H! f0 J) P
Installation spaces for compact seals 5 p6 t% U4 g1 X5 `+ E
; S# z( H" V8 B
Installation spaces for guide tapes
- b9 n2 Y2 X1 A, e8 n3 T4 Q. c4 u" {7 I8 i; H6 w+ |1 r& H$ O: R
Typical design errors involving seals + h+ {5 Q* f: x- Q! R9 n
9 D% {3 y4 Q; j. Z5 s% J- S
Favourable design features for seal assembly
5 B# F3 a( u" {4 l, v
4 ^' g, H1 D1 v( t* ^4 k, p0 f( F9 J9 {' O& O! R/ I
Standards
, v3 I# H- _! M, N3 m" }
7 S( i% K8 {1 d' E9 o/ z7 z1 ZSeal Types
! A1 N/ v, u" V( x0 V0 P( w) i: m$ H) |/ g8 A& K
Hydraulic seals
1 L1 l) z+ h3 c9 y9 `
5 q% |8 D) K. [0 }8 SPneumatic seals ( I! x7 I& ?- R' l7 p) ?" L
8 n k6 p9 W6 X
Static seals 4 S' x! C4 }* P6 Y6 v
+ D/ a: ^2 I9 x6 ~ c, }: {: \1 \& LRotary seals
2 O% _$ ?% G1 q' C' \+ V% g' a: }( a% Y$ w6 [3 t" ]
3 \3 ?4 ^+ C. vApplication Examples
0 J1 H7 n$ b, ]6 Q8 `
; i6 S8 @. l% cHydraulics % e( q& Y/ b; q
1 X' R. E& D$ C' l4 P* H
Pneumatics 0 l8 J3 C/ g$ O
; @1 ?2 ]* E- j: R9 j+ y' x' H' W5 A: L3 X) s3 u
Failures
! d+ \/ s2 m3 C% g- B4 P
( Y& m6 ]# ^; K1 E6 x7 \# uFailure causes
7 W- B" C; _' k* h7 A) ?
2 g z! ~5 }8 B5 B) F4 I z |Failures (examples)
# Q3 ?8 E: ]& o% e: n# A% l! v) x. T$ I& ]4 `
5 H2 _* l7 z; o
Company Contacts
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E. y* y3 q+ M. v, g% W& r[ 本帖最后由 schjie 于 2008-10-4 15:53 编辑 ] |
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发表于 2008-10-4 15:46:34
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