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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：
! M' q3 f& ]* W, K4 {8 fBasics of Sealing Technology
# | l* b6 d+ V) S- e9 y8 k0 JApplication fields for fluid seals
6 D: A3 a1 `6 v) ` D! [5 J8 X
Seal types
: A# I5 ~. O# y! h% _Sealing mechanism
y6 d. W1 B0 BFriction , c: e/ V' X8 O$ j* e3 j& C
Parameters influencing sealing mechanism and friction
2 i' ~' d5 Y1 a9 `/ N
) F5 n( Y( ~) ?* @Sealing Materials
; ~! z, s3 i6 Q! g+ Y, o# O# jMaterial overview
; k9 K0 Q7 x' ~) OThermoplastic elastomers - W8 l5 ]0 q* Y( ]
Elastomers 3 h0 d" X, W8 ?0 ~7 b1 V* U* Z
Thermoplastics
; {1 P6 L* r/ b2 ~ ^$ g& |; H, q: A0 V* U8 ?. n0 n, C
Manufacturing Processes for Seals
* s) ?& z) o4 |- ^2 o; Y$ {& `' C+ h9 D! Q$ r% R& N" i
Processing of rubber and rubber fabrics 0 a% U5 M1 c$ @. @! v2 t
Processing of plastics by injection moulding
9 y% D& Y: p9 @! Z H8 FProcessing of PTFE 9 R7 U3 Y6 _3 A3 @0 h, \3 M
Engineering Design Guidelines U2 q" G3 n8 o) g- V
Introduction
" d2 k, Z4 q/ e+ K P1 CBasic function of the seal ! e' n. [* h7 x! m
Seal assembly $ s k% u- X+ p* P
Sealing surfaces
9 h, k3 A' ], ]% C( R' y0 {Gaps
Q3 X4 {, u$ q6 FWipers/scrapers 3 v3 t; A i2 Q) T+ b
Flow turbulences
# L' z1 H& k! g: {) ~( \. G6 ?# ?" E6 }Excess pressure loads : H) e @, A9 A! G4 F) @6 K8 v
“Seal-friendly“ surfaces ! U! w1 ]8 N$ n. c2 @1 c
Concentricity 9 E W, L, S6 b: m. O
Installation spaces for O-rings ; H3 J R) P# h0 j7 d2 D
Installation spaces for lip seals
4 M' L8 Y% k6 J3 k E+ {! TInstallation spaces for chevron packings ( S1 R" _4 p) ]" S m% [) n
Installation spaces rubber-activated coaxial seals8 ^4 `2 c9 G; G; p8 S
$ {6 R1 z' I9 r" T0 f& e' fInstallation spaces for compact seals
% W3 H7 u9 t( f' l$ k# R0 _Installation spaces for guide tapes
% m; w6 m3 v; B# Q" pTypical design errors involving seals 6 R( o* \" G# k. x, [& P
Favourable design features for seal assembly* u$ v/ [6 a) p+ B
8 g1 v- ~3 p7 E$ H0 |9 h
Standards
9 ]* I3 B9 U$ s \1 S0 o5 ~Seal Types
* H# y( u7 k" X9 aHydraulic seals % r' q* v* q% C: Z# C) x
Pneumatic seals G# h( L8 }! e2 w/ o( `
Static seals
& Y" `+ ~# N, N8 M! w6 h' sRotary seals ) a. ~# C0 ~7 F( b+ {$ {& S8 @
+ X! C3 g- n, J: Z' S; y1 @Application Examples
' B- I1 K4 J3 `, L, X; y5 DHydraulics 6 G! C9 k r4 c
Pneumatics * w7 L& g: q. K8 o
% Q- u( L8 ?. y
Failures 4 O4 d- Q) h$ u# Z1 o: X2 t6 ?
Failure causes
( [3 T+ {) Z5 O# r2 o" `Failures (examples) + T' v0 E1 J) L& |' l
2 A9 a# F @7 vCompany Contacts |
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发表于 2008-10-4 15:51:43
