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德國機械設(shè)備制造業(yè)聯(lián)合會(VDMA)的液壓密封培訓(xùn)教材,,ppt格式,,一共19個壓縮包,。目錄如下:
6 Q/ D4 ?& m0 K$ B' q2 e* ~Basics of Sealing Technology
9 c2 p: P* P/ f: tApplication fields for fluid seals9 H4 a# k& P# j( q2 s: t
( w# i# @; s8 J1 w' LSeal types 0 y, T! |: P" j
Sealing mechanism - x7 v3 }0 t5 `# k3 S& E
Friction & d6 h4 X6 }9 K f( p: m
Parameters influencing sealing mechanism and friction
3 j8 x! f4 V0 ?& U; H) I( i1 A. r; Q! n' ^! J7 |0 r
Sealing Materials ' O! M4 l2 A) a! I
Material overview F! T2 J; H; E) e7 o* D; m( V
Thermoplastic elastomers
g/ A! _- f9 xElastomers
- M' D x0 D. c# IThermoplastics % Y+ F4 N0 B6 x' a6 n
5 X' p0 H5 k/ b3 O$ N; N* y
Manufacturing Processes for Seals
" L4 C1 n0 E( w7 ^
* F$ g/ @9 C& t, b# i0 T+ `Processing of rubber and rubber fabrics * F' ~2 ^. a* \6 F0 B1 L+ U
Processing of plastics by injection moulding 5 x ?2 C: \% ]! a! g% ~0 A+ O
Processing of PTFE
. d; S! n$ m: m, |4 K6 _Engineering Design Guidelines 9 A" |& ]8 V: U4 X' u: o
Introduction ! {$ [/ @* j8 ?5 j
Basic function of the seal + ~( C C. \0 n
Seal assembly
" d2 [9 U; U) K0 U$ uSealing surfaces
. R% t- \* ]5 n! o5 P1 bGaps
$ w& }6 A" E; G+ e. l# hWipers/scrapers - F5 s" i, f( V/ y
Flow turbulences 7 K2 B. y) A& v [# z
Excess pressure loads
+ [( p9 F6 d1 H“Seal-friendly“ surfaces ! A; R$ w5 O% y! O L& u8 T
Concentricity
! w3 R" P( t, s" kInstallation spaces for O-rings
C# G1 p% W$ H4 hInstallation spaces for lip seals
- s1 B! o" H" l+ [9 c1 g& T$ JInstallation spaces for chevron packings
' Y! J& \& N; x0 ^Installation spaces rubber-activated coaxial seals
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5 a! y% u0 ]8 a1 HInstallation spaces for compact seals
/ O! H# U5 ^$ W% R! g( WInstallation spaces for guide tapes
. S5 p* V% c1 k2 ?4 Z- z6 ?Typical design errors involving seals 5 b8 R) j2 z9 z* A/ g* Z
Favourable design features for seal assembly, }3 w" b- W: v) J6 j4 U% a
4 X _' m7 n) Y! b2 UStandards # o% K5 O7 q/ F8 s0 c
Seal Types
4 z% v9 v ?8 Z! d$ k7 `Hydraulic seals . y! b8 W, l2 D! q9 w( w1 c2 x& s
Pneumatic seals
/ j+ e' K/ @) {/ O. o8 x, }$ T PStatic seals 4 V8 U& z P1 h8 e; A* B! f
Rotary seals " M- I7 I m6 v, t9 s& y6 N% g1 V
) Z# s7 B* J7 xApplication Examples
8 H0 r: S: ^* q. ~- eHydraulics
. g z3 S t, ?. A- j/ `Pneumatics
& W" v5 F. b4 L. x+ s
' H) A8 H: d3 iFailures ! `- J( G$ W% ^) o
Failure causes : I1 D! ?7 k5 J8 g0 y' X7 x
Failures (examples)
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% C R4 h8 O, h7 I7 @ R8 ZCompany Contacts |
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