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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： A7 C, }0 ~! H8 N! n0 ^
Basics of Sealing Technology
+ y6 I& l- O! S$ f# I3 F9 q: `Application fields for fluid seals: ] H3 m p2 t) ^4 ]1 S/ [
2 o/ F+ H7 e [9 qSeal types 8 f% R: O; v* |9 W9 Z5 v$ @
Sealing mechanism
7 ^ r" k3 H5 J4 k, q, y4 I4 Y5 ?Friction
_: M3 R" K# ^3 dParameters influencing sealing mechanism and friction
6 M! ~) e1 e% t0 ?% A
# v, A- ~! b9 iSealing Materials
9 a7 ^/ H5 w* u* G7 pMaterial overview 6 t* E+ y) ?& }( P! ^
Thermoplastic elastomers 3 q, e0 T5 C4 \ J0 h; d
Elastomers . I, r: T- v4 G" Y0 K( |$ Z
Thermoplastics
# G9 y5 U' |. n
' [. a6 X9 [1 ?& I4 HManufacturing Processes for Seals# ~0 q; _& z1 ~
2 V' b; [8 ?1 h# C. n5 B
Processing of rubber and rubber fabrics
* ~! `. W' T# ?4 IProcessing of plastics by injection moulding
% L# `9 N+ x5 Z! n2 xProcessing of PTFE , |7 l3 A* ~, T) Y
Engineering Design Guidelines ' { b$ ]9 C2 q' W) W, D) `% z
Introduction ) r E/ e/ s E5 o6 c0 p5 _9 j3 l: w
Basic function of the seal
% d( M$ v" A6 Q: vSeal assembly 8 @# v* ~! [7 ?
Sealing surfaces ) N: e; _9 g$ n) N1 [) Y
Gaps & i J! O( L+ `# S5 I6 A; h
Wipers/scrapers
# O9 x/ n* J9 OFlow turbulences
* u" N ]2 _: r, w1 _* }Excess pressure loads
" C/ `! c J, {“Seal-friendly“ surfaces
5 _( ]5 H$ W) |( [6 ?# oConcentricity 1 _4 l8 I- A: W. o% W0 A) w/ u
Installation spaces for O-rings ! k1 x7 [ A$ J
Installation spaces for lip seals
8 ^% l' ^ ?. S w6 t( b+ o }0 HInstallation spaces for chevron packings
% C/ `7 j( s5 M" ?( S. fInstallation spaces rubber-activated coaxial seals- n* P0 |- \+ Y) R2 B
4 a( K8 m- d- t) B U( e) wInstallation spaces for compact seals # v2 E& Y' F3 y
Installation spaces for guide tapes
5 q3 ] R1 U9 |4 TTypical design errors involving seals
. Q# [! P7 e7 a" cFavourable design features for seal assembly& e' |* S% E& ?9 [
+ X4 N4 J' s; h+ r b, w" nStandards
/ Y+ W% d6 ^9 CSeal Types & G3 Z1 O# U7 E7 d! T/ ?( g6 r
Hydraulic seals d" Z$ b8 s5 O: u8 b5 c2 T
Pneumatic seals
, w0 k3 k" B1 _' h% @& ^5 i; UStatic seals ; e. v- r1 g. ]: O( j2 Y* T
Rotary seals 2 K. s1 s$ i% Q' C! O( |& a
/ _7 D5 f9 o d% d$ K/ s: @Application Examples
$ G, p+ M/ h( y7 T" M$ k' w+ }: F, ]( KHydraulics . ?& C" W4 g! Y8 V+ z- E
Pneumatics
& `* R) N* A+ {) @9 L
8 C1 x: Z2 d' I# _! ~. J4 MFailures
9 K2 K6 N( s/ A* F0 n5 kFailure causes 4 [* W3 r+ e- G9 o+ g0 |
Failures (examples) 1 R- U5 c3 r3 U1 R4 l2 A/ f
% W# Y* c, w" ^/ A* g0 X
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发表于 2008-10-4 15:51:43
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