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德國(guó)機(jī)械設(shè)備制造業(yè)聯(lián)合會(huì)(VDMA)的液壓密封培訓(xùn)教材，ppt格式，一共19個(gè)壓縮包。目錄如下：
& H% v6 `. w0 v0 m f2 `Basics of Sealing Technology ) d7 D4 n$ L5 U8 n) o- f, _
Application fields for fluid seals
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Seal types
6 |8 D! t$ P8 `+ m7 Z5 W# b9 zSealing mechanism
7 a# P& a/ e; X' T( K+ xFriction 3 _0 ?* V9 u' U2 K s, O
Parameters influencing sealing mechanism and friction
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4 @, e5 i4 |5 z2 x( uSealing Materials
1 `' V( v) D% [3 B0 N$ t$ S9 KMaterial overview / T" Z3 G. N4 D* R! r
Thermoplastic elastomers % c! V2 a+ C% o- u, g) ?6 B
Elastomers ! z0 I; g& O1 G% y M- u* g
Thermoplastics
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% i6 m7 m$ f8 G" z2 M$ yManufacturing Processes for Seals6 x1 E) F6 @* k( k2 P
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Processing of rubber and rubber fabrics . H' X3 z) d4 ~7 P
Processing of plastics by injection moulding
# u+ h5 ?; I' S1 A4 V% ]Processing of PTFE ) E! X2 F$ ]( E$ x" G
Engineering Design Guidelines
$ t/ n5 o- Y! A a; L/ ?6 [5 }Introduction 4 G- ^" W! ^3 |1 J7 U
Basic function of the seal " `$ ?( d- Q. X0 U7 K
Seal assembly
5 I5 o' r/ e( Z7 H. g4 [Sealing surfaces
- p! }5 z, B- |" ] \, z3 LGaps 8 s8 }( B3 ~1 ]9 ^' a4 v) F
Wipers/scrapers 7 V, ^ O) A; [$ W0 L5 I
Flow turbulences 1 ]; x5 M1 n# B2 |
Excess pressure loads
- O9 \; U5 @, c7 X7 V“Seal-friendly“ surfaces
W2 X' h. J% VConcentricity 4 u9 } N* h( v4 x7 |, p2 Q
Installation spaces for O-rings
6 m. _. Z& c$ N: I5 V! vInstallation spaces for lip seals $ r! x# q" f7 o/ [/ u8 f8 V# `6 s
Installation spaces for chevron packings
# ?5 B, w5 h8 ]4 T# a: {; lInstallation spaces rubber-activated coaxial seals
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! N! B! d3 |/ o9 C& MInstallation spaces for compact seals
, t% o% x# T. f! f2 WInstallation spaces for guide tapes
7 w i. |6 K" Z4 ?Typical design errors involving seals 4 W! p8 F% _2 E$ P
Favourable design features for seal assembly
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' Y" H. \! A" y- vStandards * Y) e/ O: y* v4 D
Seal Types
7 c; e% B1 c5 l# x* \Hydraulic seals
/ C5 W: n) D* K. ?' W7 r: g/ iPneumatic seals
) s* j; E- N0 w1 X5 `- d0 g: CStatic seals
$ _& P1 z0 O* }9 wRotary seals
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8 } L }2 F2 Q9 eApplication Examples
6 ]2 e# r; b/ @0 m6 OHydraulics
, _" G( b$ D; f: I+ XPneumatics
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Failures
4 m3 I4 ^4 O6 [3 P1 X4 F- NFailure causes , T- d6 \) V2 k$ p
Failures (examples)
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7 r/ H) m/ ]* A3 p' r7 QCompany Contacts |
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發(fā)表于 2008-10-4 15:51:43
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