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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：
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4 u. G- j& t* aBasics of Sealing Technology
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0 S- w( M) C( }9 VApplication fields for fluid seals
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. n5 A- m% s# }Seal types * T) I" N. A5 |) O1 O& ]
- p- E+ k( X4 K' Q( g, ~Sealing mechanism ! ~* ]+ f5 N Z) {) M# H2 A2 ^
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Friction
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Parameters influencing sealing mechanism and friction
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Sealing Materials
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1 m( b$ P% v5 k& V1 K* uMaterial overview
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Thermoplastic elastomers 4 _- \$ R) B r6 V0 G
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Elastomers + G. E; U% W3 H" \# d
2 w5 Z2 X" E& J1 V; Q" bThermoplastics ( B/ N; Q T* z+ C3 s1 ?; S2 w
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Manufacturing Processes for Seals
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Processing of rubber and rubber fabrics 5 ^% a- {' ?0 v, X* l+ f+ G( Q2 |6 r
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Processing of plastics by injection moulding # p+ p6 T B& C8 k- A8 X! ~
. v0 q% H: [- Z- g/ r' T2 }Processing of PTFE
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% X- k. v# f' ?/ e! P" X0 Y1 { AEngineering Design Guidelines % k, W3 p' w) Q
- [' n' [7 H: k$ b, nIntroduction
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2 W, _' H' c1 o6 n. p0 IBasic function of the seal . `8 v- Z4 z" y# H) w# _
. a$ }! v' I* ^Seal assembly
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. O5 X) {, w$ W9 g+ t! qSealing surfaces , P8 ?, d. U D7 _. |
0 y8 B7 Y; C. ~( P7 Y. qGaps ) K: Y0 M" ]- f5 A9 u) m8 k
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Wipers/scrapers
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$ [' A) J q. ~ j$ ~5 J- cFlow turbulences
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Excess pressure loads 4 ?9 E2 C) B8 a, e1 }
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“Seal-friendly“ surfaces ( F# N+ [) y0 ]6 D6 l' E* [
2 ?+ B/ w/ v! Z' \' ZConcentricity ( i3 z; I( X5 u. T& L
" `2 `# m: L3 s$ S9 @Installation spaces for O-rings
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Installation spaces for lip seals 1 v5 r3 F2 c, S" v- t
) t" z5 `5 {% D8 a+ L- M* NInstallation spaces for chevron packings : W, }+ G# ?9 h
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Installation spaces rubber-activated coaxial seals+ {- ^4 z: H" s1 B! X# r
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Installation spaces for compact seals
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6 ^8 M% g' e, u: W# ~Installation spaces for guide tapes
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Typical design errors involving seals - D! `. y- J0 @( d8 t* ?& F
, t& ?8 M) J* |& IFavourable design features for seal assembly @/ i) u% |; E$ u7 K5 T
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9 T- U9 T7 ~" nStandards
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Seal Types , D! _8 r4 h: O4 h- D5 O: P9 j' _
3 K0 O! Q6 S: i' T5 s1 U# aHydraulic seals $ s0 W% Z) }% K! P9 `+ f
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Pneumatic seals
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: o8 D! a- q7 E( ]% ]' mStatic seals
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Rotary seals : `4 {5 |+ Y- x6 {
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Application Examples 4 G t, i- R$ V/ a9 |% a4 {
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Hydraulics 0 g/ C8 t' w9 o: I2 Y) \
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Pneumatics 6 R2 l: \# D4 a8 B" n
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+ M; e4 o- ?5 x. r0 N' BFailures 8 C/ E7 o, U0 k
. n8 i* g: i, q, \. vFailure causes $ q& Y1 r3 r* C! X: L; P* D9 F- X/ i
- q3 Y: H% n1 p: a: W" |- g) [: WFailures (examples) % |; Q* ?6 L* x* L* f2 {9 X
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Company Contacts 2 O" E% G3 c! N
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+ `) d( F" ^6 E, k, D8 n[ 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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