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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：# G6 }: t+ Q- n5 h8 e
Basics of Sealing Technology
( f- Z. V. [2 u% M. c# l- ?Application fields for fluid seals
6 _8 k( m# M: s# p$ V$ B) B% [ e) R
Seal types
. G! p, x$ J) zSealing mechanism
, e \( _8 |) G. D& sFriction 6 ]& [6 c+ T/ R m1 ~8 w( G/ v5 M
Parameters influencing sealing mechanism and friction
' W1 B' Q, q! h- j2 L! U1 I3 b2 T
% X( ~2 J1 {* wSealing Materials ; ~9 S6 q1 J; I. a3 s7 k: @: M
Material overview 0 r! @2 b& Z. i; p9 z9 u" p
Thermoplastic elastomers
7 P( X6 @+ w; M m* ?Elastomers
3 @8 `( V ?5 G) U+ R( O7 XThermoplastics
& g0 i. Y" S! ` J
; o5 T T8 h0 W2 K, {. iManufacturing Processes for Seals
4 v( g- F/ n/ x4 J! T1 G* g2 N- F4 J* ?# I6 R: G1 T0 R4 x- N! u
Processing of rubber and rubber fabrics , T: E% {( n5 ?% A
Processing of plastics by injection moulding " ^9 H3 l u# @) E4 b' a' g7 \
Processing of PTFE , C) {3 ?8 `! N# R
Engineering Design Guidelines 1 z$ G0 L* E4 }) ?* c i6 y& b
Introduction 1 V4 j" s2 _( l1 z7 ?
Basic function of the seal
" ?8 R q( C: w6 P& j5 }5 x8 YSeal assembly
6 Q- z8 l. u: YSealing surfaces
( y4 v. `+ ~2 bGaps
' Z) V3 Z( i% l) m$ p" n N' k& UWipers/scrapers
4 r6 k' T5 I9 \# ^Flow turbulences
: O: ]1 |$ m: n7 s( c6 D- nExcess pressure loads 0 c& J! C) u2 P7 ]5 a: V V
“Seal-friendly“ surfaces 2 O2 V& ~ z: y& a3 E# M( }2 Y
Concentricity
9 I' Q% Y8 F" N S# q8 HInstallation spaces for O-rings
/ l( Q4 i0 M7 k) i" zInstallation spaces for lip seals 5 _8 K1 I$ u0 L
Installation spaces for chevron packings 0 g5 K% P7 b: D6 V2 s' @+ }6 i
Installation spaces rubber-activated coaxial seals
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/ A; ?' h- X6 f" r6 D% r, ~Installation spaces for compact seals 5 [8 c: \! m; g6 l- q$ R ?
Installation spaces for guide tapes
: K4 k" D0 D; I8 P( _" w, zTypical design errors involving seals * n1 ?* N0 H% D1 T% o$ i p# J
Favourable design features for seal assembly3 ^& d& R% {. x a+ d
3 m" |9 |, q* S u' S1 ?Standards
/ `% |, N! e! T! \7 ]/ k7 ZSeal Types 4 i: L. G5 F2 `# X% h! _5 D
Hydraulic seals - N0 Q* g% o; T3 p8 X: {; H6 h
Pneumatic seals
+ }( n/ y2 l1 y: H FStatic seals
( [. t4 _: x- S- m. @% I* _$ bRotary seals
% ]0 E. l2 R ?6 W5 o* S- W+ a& h+ W1 ]
Application Examples 5 n3 P/ o! X; I5 l. R0 ]
Hydraulics
" S+ b# {2 ]! ]Pneumatics ) x9 {9 T4 V5 d+ `* R m' E6 n5 t
a1 v8 j* W6 ]# [* o& t% o5 |
Failures
0 T$ B/ a' H/ J* D! d8 T' kFailure causes
/ s. G/ y. H9 @+ r; H8 OFailures (examples) " b7 v( B" q. v) a# i% @' O! H
# O1 ~( G4 h' [Company Contacts |
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发表于 2008-10-4 15:51:43
