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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 Y# C, P1 X' ?2 Z8 C, X
2 S4 v+ P+ y7 A! v( O3 lBasics of Sealing Technology " _7 R, N' e D7 S+ X; S1 D3 Q
* a" ]5 G4 H; D+ nApplication fields for fluid seals2 D, x# c% f8 p! G0 v) N: C, z
5 |$ l' S" w# \. u S
7 m% h' v) ?3 y0 _9 ? \1 bSeal types
; @7 b+ }' ~# x& Y; w
: v1 f! F$ y& r- {. g% |Sealing mechanism
, I1 `$ t; d [2 T* P" Z) s
; q! t, w9 {: ~Friction 7 t# h) X/ d) C) l" G
. J* G; c& ^+ M( o; y# SParameters influencing sealing mechanism and friction
; O0 O9 Z7 ^7 W6 t
. m5 Q$ e Z5 p% B0 G) s$ d* r! h/ T1 f
Sealing Materials
, d, Z T5 O$ C3 U, L8 S4 w* o
+ V# W7 g* r/ B9 W. vMaterial overview 9 t4 k) T* a$ z$ }
' [' N! [( p3 d3 u3 n( b- Y
Thermoplastic elastomers
0 F1 O" t2 W6 L$ O1 H$ d: Y6 ~1 B& f1 N
Elastomers 8 i7 @! r3 @. t1 i+ E* i9 C* |. @
) c5 b, C5 l8 w( G6 Q
Thermoplastics 3 `" U( `8 D- C- J0 @. b
2 o; D9 r& v: S( u1 z# m( V+ Y" p, m3 t
Manufacturing Processes for Seals6 Y$ I: g9 f9 T ~. l" F
" ~, P, r9 w, e+ c: P# p
* O# {9 {: |, \7 @ O
Processing of rubber and rubber fabrics
% D8 [0 [ K' W! C% m- ^) z, A) `9 a" _" v3 `# Z; F3 \6 n/ m3 x
Processing of plastics by injection moulding
' O2 q# R8 E$ ^5 T# K% O1 u6 _
( C0 p5 r5 l; f4 L: k. F+ nProcessing of PTFE
4 z- N( H g+ J! b, K
5 g$ e: ?6 [. Z2 f& MEngineering Design Guidelines 9 w- h: X- m; L* F
% z" w& n" ?) A8 ?* x: ^. j
Introduction
; [; C6 t2 v2 I! R. D# t
# m7 q$ t; _# _& U- a& rBasic function of the seal
- I1 o( u% e- t) K. N7 h! ^' U% h( P+ Z9 s
Seal assembly
+ \7 I8 @) G1 V
; \+ i# p% g C9 WSealing surfaces
1 J5 @/ ?' B6 f" f- ]: c) I' m; i2 n7 _/ Q' K% x. C, q8 U% t
Gaps " L0 ^ ]3 w2 E4 h6 i$ V5 C
" q$ [" m. g: Y& q) c: V, e; TWipers/scrapers
2 q/ r* C/ }- p$ V3 [% N, I9 I% m" }
Flow turbulences ) h4 e: b, j2 p# n
0 w3 s6 r. q; b/ B3 tExcess pressure loads " V/ n5 C3 m7 N; \0 n) _9 q' M
- _7 y' O }. S" L“Seal-friendly“ surfaces 3 z9 _4 z0 A$ T# t2 l6 {' l$ G& `
0 D1 V3 z+ U; k) LConcentricity 6 p# g; V8 V! D+ Z, z. \8 U1 D
( D: ~ c/ u% K. A* Q
Installation spaces for O-rings
( D7 O [9 ]! s3 Z2 {% M) n6 w& Y' M
8 O x" p# }) q( ?; M8 C& WInstallation spaces for lip seals
/ c3 O1 y4 Q, j9 ?4 G1 S2 ]4 ~4 @1 C4 ^6 h' Y9 T) H
Installation spaces for chevron packings
2 V& n' h9 ]5 r. V( }: o
. n7 }. `4 f4 ?4 E% b. ]/ y" YInstallation spaces rubber-activated coaxial seals. \0 n' ]: r0 d, @; X
. ^3 }9 D$ Y/ `1 T5 E' B
& v4 \4 w/ |, t+ P2 e- J$ U
Installation spaces for compact seals
% r; x- O {, n$ t- {4 C+ Z8 K
# ]- }% r5 Q1 F: z2 j0 |1 ZInstallation spaces for guide tapes
- E$ F( [% ^+ z, J
# i# W3 z: K/ w3 ?" t* K( QTypical design errors involving seals
9 N+ U) d3 T5 [& I- M9 q
8 h1 i5 {$ c Z4 h W) r; z2 tFavourable design features for seal assembly# A# s, \2 R3 o5 X3 {* n; c
9 Z) v( A, F$ h/ H7 ~# i
, x1 t+ x H+ RStandards 2 H3 [5 E/ `1 k& I3 U
: m5 y" C# T5 n! }+ V8 @- f/ E
Seal Types
- F% O4 w. |3 z% R% H
/ B6 ^9 c$ l$ D- F! `4 N: ]/ Y4 xHydraulic seals
" K$ s) h! V& e: E
- c' V9 b- E# t; E1 @Pneumatic seals 8 m5 |4 O$ d: j0 t+ n/ @' ^
; l% I: J/ ?2 RStatic seals
" r0 G/ m4 y# b. z- c8 y0 s' T9 g
) i+ h) L" i: fRotary seals
& ]/ Y/ @$ u3 P# r; S- A9 ~0 f3 v, G
& v* F; e% C( G- N l/ _8 W6 e
% N9 W. K8 I {& U, i. j+ d9 V" uApplication Examples / f4 E7 k6 J( u) f
9 W; P7 K% x& T1 n4 r$ }! N
Hydraulics : C4 [7 r" p! D k {* H, M9 }$ Q
0 @, s6 p! J4 E; E4 R2 |5 fPneumatics : O! F1 N! [' C9 M9 c3 Q
# P6 M$ H/ L% u v: W* k
) U6 p" _9 P. f+ P. C' |# s2 R
Failures
) f1 p3 D. S5 g3 g. j9 i( d( p# r0 W3 o, {- p$ R. O6 Z
Failure causes . \2 d& c% p3 c9 u# i
: B& k; \- x9 F. h6 ]9 f( q* XFailures (examples)
; R! {8 u; x# u+ M% Q" ~; v# c: f7 _2 ^
! d, b* B1 C, q* \& s0 H+ A9 t
Company Contacts ) L* E( P9 ^# [1 i4 z# S
5 [; J. Q4 ~+ R$ e& K
z2 k2 _ e" ?$ ~* g6 u7 c$ t8 y. \ a$ [
3 p& P- I# u, d* d' z) j& f
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' F. T3 P8 M' Z, Z2 W0 F! V[ 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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