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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：3 _+ Q+ S3 A: q
) y3 W" g* h# i% c5 P( t% u- }9 nBasics of Sealing Technology ! F0 ^% N5 {2 y
0 L2 {2 K: X E- A4 B# H- Q
Application fields for fluid seals
3 R+ x& W3 G/ M/ x) B6 M3 K( z- ], {* ~1 m
6 z+ l. ]( K- B2 c; l
Seal types
1 s& U- |. @) i. Z+ Y, y8 N3 s8 ~: d
Sealing mechanism
# Y. C9 r& _7 Z3 P* s$ _; i0 M7 O: [2 ~; |
Friction ! |7 h. X* M9 Z2 X/ B7 B; r; ?! a M
1 k$ L. Z" a0 N1 ]! Q) s
Parameters influencing sealing mechanism and friction
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1 [1 y2 O) {3 ]3 Y/ }# g8 R! }
3 E2 C: F5 ^1 O1 m1 Q2 }Sealing Materials & P+ t1 } }* I, g8 x9 z
) P" Z. Y }( u6 J" u( s# @+ ?Material overview
) `1 x9 G2 A- _3 t
* x7 M9 ?2 T: WThermoplastic elastomers
4 \) t9 a! O) K" a2 S9 ?% l1 |6 D
' u; k0 }2 u. ~9 k7 H2 MElastomers
. |3 G6 F' S7 [
$ e% ^" O- _( qThermoplastics ' O% J% P7 {" M' p- `8 O. G0 I
( ?, O" g% |! A$ Y
5 z0 n( ]$ v5 v* t2 s- FManufacturing Processes for Seals. ^- E, B8 e! k
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Processing of rubber and rubber fabrics
0 T2 _5 B/ p. S! H3 ?
; @/ j i7 S8 j3 y( VProcessing of plastics by injection moulding ' s6 T d7 k8 u/ Z: w' ^% d% s
8 e% ]$ R& R( o; Q3 C
Processing of PTFE
: `# e. P( z. G7 Q0 J8 U: E4 {7 U! p4 S( x9 K$ N6 Q* F
Engineering Design Guidelines 8 N- y5 g5 ~; [
/ j" R5 P0 i, Q7 K0 M3 c6 X. @. U( KIntroduction
% P# s' x+ O+ P8 s% e
% F# Q# o2 z2 UBasic function of the seal + E8 ]# i+ D; a) e$ @/ y, ^4 Q
. F- z- U+ @9 F
Seal assembly - _, u# V+ ]% A8 t! t( ^5 e+ j
0 s% W3 L, x7 V; [8 T! b+ d
Sealing surfaces - P$ ] ]8 R. ]3 y6 J
: s/ n7 f+ O" QGaps 4 l. ~8 h7 K1 e+ j3 {- ?
) U2 t* a) I1 k/ t* @* |7 C( tWipers/scrapers + P7 s5 p, W, {4 q$ M, r
8 B% |1 X* t; ]0 U! D! T1 O2 J( _Flow turbulences - {* }) F, e, u: R% N+ a" e
2 \6 @6 A: F4 _6 b, Z; N' N4 BExcess pressure loads 4 p/ ?% N! P1 f* K
# D7 N& H0 \' m9 q
“Seal-friendly“ surfaces
% _. T y3 i3 ~" ] R
, ^- C) m) e! n' JConcentricity
: I1 B. n, a7 K& {2 w; P, h( [
- g" b$ {- k, pInstallation spaces for O-rings
1 N* p9 x, p9 A' ?1 K; n% {9 f& B, y) d+ {2 x8 u$ j( k
Installation spaces for lip seals ! J: y+ |$ Y" O- r& v
Y& ^4 L" |; a9 N% X
Installation spaces for chevron packings 6 r$ @# N1 `4 l+ V5 p! \
9 Q+ r2 Q9 t# R3 f3 r
Installation spaces rubber-activated coaxial seals
8 x' {' k1 B5 }6 u) M2 y
! x, \; q* K& r* s# D$ ^
' h0 j' e7 m7 d- mInstallation spaces for compact seals
& M$ {$ i- B3 g7 ~$ z5 o) R) o7 u8 N
Installation spaces for guide tapes " l# ~. l( i6 H9 w; R# C5 T
0 y) w& l2 _1 Z, k9 Z# R
Typical design errors involving seals
6 K- l, j3 k% ^" R% y6 g3 G* U" l
1 G2 j: @0 L/ l7 g$ XFavourable design features for seal assembly" N/ P0 m* @0 W \; D p
/ V5 y0 i' T. L6 S
7 K- X' Z- c) w- `# p
Standards
0 [$ c( F. T! K6 M4 k1 _/ B: {5 O3 X& t' F. P/ o5 p
Seal Types
) q$ ~; P$ V. c. V4 k1 K
+ F: ~/ S/ M* r" G! N* O gHydraulic seals
& T# c% f# {" `. o$ W! i! i* D. k/ t6 A
Pneumatic seals $ N0 U/ Z R) e6 o, l
) Y1 h0 V" s: }' E
Static seals . w0 x) e* q: B7 L: @) Q
$ R4 B* ^" v0 P5 k6 G# VRotary seals
3 F! ?8 y& [# X; z; ^! a3 n/ ^$ {" P" D, k8 l8 n" v6 |- N T
" }4 Y$ E$ u! b- o+ `8 QApplication Examples 3 N5 F- Z* \) ?4 t9 \
+ r- b* d9 A ?/ NHydraulics - k3 ~; ^9 T, o( A3 d
6 b- o8 B% v) R# M' u6 I
Pneumatics 2 q# {) }7 h6 p# {5 h/ y' A
! d( J( ^) ]% \
! h3 ^) N g' S
Failures
8 v/ ^9 s3 \( q8 D/ p* q# f, `& E5 l3 A0 p- Y& E; c
Failure causes
7 o! r7 w3 z/ l ]% A y3 p) \ R- x5 E
Failures (examples)
7 n: P2 v9 ~: H! y# X% c# R- V e( v2 n2 X8 }6 F# N
$ }& A w% M" Z
Company Contacts $ ? \* _8 G7 m# p6 C6 O7 Y. }
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. r, ~* i( r& H% n% v8 d, o[ 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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