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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：' {! D1 i( @1 @7 p3 y
Basics of Sealing Technology h7 C+ x1 x+ _
Application fields for fluid seals
: ]# E6 ~7 ^2 ?7 U6 i+ @3 E9 h, s! |0 ]8 ]( P; k- W
Seal types ) Y& x$ M$ w$ L6 s$ D) y% e+ z
Sealing mechanism : ~; b7 C6 l h7 K: v- u
Friction
3 X5 j2 Y% l0 k9 g. K- ^8 p4 xParameters influencing sealing mechanism and friction " f0 e$ R% ?8 T% h2 h
9 ]2 R. z* ~* V4 q; M$ y" H
Sealing Materials " O% o+ {6 t3 ]$ h; n9 h5 g w$ j) G
Material overview
4 D' C) q2 d* y" `) s: }, uThermoplastic elastomers # U8 s1 F7 Y* a/ u8 y
Elastomers % o6 r" E8 n# F2 q3 X% `
Thermoplastics
" M# d+ j+ T. @ g! E7 r$ Q9 _2 W
8 J, O, m5 G' \% _. ?6 C N: Z1 pManufacturing Processes for Seals* i" V8 X' O2 t+ x. D% w& @
$ H/ J1 @8 Z# j, OProcessing of rubber and rubber fabrics
% h$ C2 P( ~. WProcessing of plastics by injection moulding
1 n- g0 w4 u; F/ z1 q% g4 }+ |Processing of PTFE
" N) I( n+ r9 j( k3 H( QEngineering Design Guidelines " w4 D5 _9 ^$ I+ O: f/ S5 m1 a/ C( p
Introduction
: L o6 s# G I6 a+ Q F6 Q# YBasic function of the seal
h8 l; K- B: mSeal assembly
9 y: Q# ]+ F* A* a' K" U- J+ A2 R0 cSealing surfaces
& O$ }: Z) k- N5 o& vGaps % F9 c4 H$ q' t8 g9 Y
Wipers/scrapers 0 u0 G2 L7 [& {5 J$ l
Flow turbulences
) ? }' }2 u: k+ ?/ S' L4 c bExcess pressure loads
4 x4 Z6 O. M4 [6 L“Seal-friendly“ surfaces
+ \* c* k4 u; U. _5 d! KConcentricity
; B+ F6 b% n0 s3 AInstallation spaces for O-rings
! J7 j9 B+ m$ n G) AInstallation spaces for lip seals 4 B+ p' c s& B5 E/ V% ~" e. j& _
Installation spaces for chevron packings , y7 ^$ x& [) C" ?
Installation spaces rubber-activated coaxial seals) W- `9 h* B# a# A4 a) h
( b$ W* `/ d& `3 LInstallation spaces for compact seals . |5 d) s% _, u2 L. E5 A
Installation spaces for guide tapes
- o5 R/ c* V' t9 C6 W7 J$ `" kTypical design errors involving seals / b7 Q: F9 H7 Y; U& s" l
Favourable design features for seal assembly7 s7 \9 P/ H& k# W
' ?; c1 l) u5 _- C# p
Standards 1 @ |; j5 }& j
Seal Types
- u9 }5 N) p. L9 EHydraulic seals
; F" W" c8 Y/ z- U1 R D5 M8 j$ OPneumatic seals
% X4 `5 N4 }" bStatic seals
; A( n+ [! ]: @! H. oRotary seals * p1 R2 O- X4 |5 y \( u* `
* L8 k3 x. \# }9 CApplication Examples 1 ]+ A8 C |# r/ o5 P3 {2 A3 @$ _
Hydraulics 5 v, r3 R' a2 b
Pneumatics
. E# h5 M9 Y/ O( ^3 ^& [. P' H4 }6 S; |# N3 B2 D8 g) ^
Failures
3 s* \% S7 }1 v7 P( tFailure causes
- ^) |4 G3 t* s: G( h9 S( r; V, J2 xFailures (examples) ) `. K+ R0 j9 v( o1 A' K
, F* x) N( j- J/ M
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发表于 2008-10-4 15:51:43
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