Tiêu chuẩn iso 06624 2 2016

© ISO 2016 Internal combustion engines — Piston rings — Part 2 Half keystone rings made of cast iron Moteurs à combustion interne — Segments de piston — Partie 2 Segments demi trapézoïdaux fabriqués e[.]

Internal combustion eng ines —

Part 2:

Moteurs à comb stion inte ne — Segment de pisto —

Partie 2: Segment demi-tra é ọda x f briqu s en fnte mo lée

COPYRIGHT PROTECTED DOCUMENT

© ISO 2016, P blshed in Sw itz rlan

A ll rig hts r eserved Unles otherw ise spe ified, nopar of this p blc tion ma y be r epr od c d or utilz d otherw ise in an form

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written permis ion Permis ion c n be req esed from either ISO at the ad r es below or ISO’s member bod y in the c u try of

F reword i v

Introduction v

1 Sc ope 1

2 Nor mati ve r eferenc es 1

3 Overview 1

4 Ring types and desig nation e xamples 1

4.1 T ype HK — Straight fac d half keys one ring 7° 1

4.1.1 General featur es 1

4.1.2 Desig nation 2

4.2 T ype HK B — Barr el fac d half keys one ring 7° 2

4.2.1 General featur es 2

4.2.2 Desig nation 4

4.3 T ype HK BA — A symmetrical b rr el fac d half keys one ring 7°(h 1 ≥ 1,2 mm) 4

4.3.1 General featur es 4

4.3.2 Desig nation 5

5 Common fe tures 5

5.1 T ype HK , HK B an HK BA — Half keys one ring 5

5.1.1 Unco ted ring s 5

5.1.2 Chromium plated or spra y co ted ring s 6

5.2 Chamfer ed edg es — T ype HK, HKB an HKBA ring s — Outside an / r inside chamfer ed edg es (KA , K I) 7

5.3 T ype HK , HK B an HK BA ring s (uly fac d, semi-inlaid)— Plating /co ting thicknes 7

6 F rc e factor 8

7 Dimensions and forc es 8

A nne x A (normative) Calculatio of me sur ement width h 3 of half keystone r ing s 17

Biblog raphy 18

ISO (he Int ernational Org nization for Stan ardization) is a worldwidefede ation of national s an ards

b dies (ISO membe b dies) The work of pr p ring Int ernational Stan ards is normaly car ied out

through ISO t ech ical committ ees Each membe b dy int er st ed in a subje t for w hich a t ech ical

committ ee has be n es a lshed has the right t o be r pr sent ed on that committ ee Int ernational

org nizations, g overnmental an non-g ove nmental, in laison with ISO, also take part in the work

ISO cola orat es closely with the Int ernational Ele trot ech ical C mmis ion (IEC) on al matt ers of

ele trot ech ical s an ardization

The proc d r s used t o develo this document an those int en ed for it furthe maint enanc ar

desc ibed in the ISO/IEC Dir ctives, Part 1 In p rticular the dife ent a pro al c it eria ne ded for the

dife ent ty es of ISO document should be not ed This document was draft ed in ac ordanc with the

edit orial rules of the ISO/IEC Dir ctives, Part 2 ( e www.iso.org dir ctives)

A tt ention is drawn t o the p s ibi ity that some of the element of this document ma be the subje t of

p t ent right ISO shal not be held r sp nsible for identifying any or al such p t ent right Detais of

any p t ent right identified d ring the develo ment of the document wi be in the Introd ction an / r

on the ISO ls of p t ent de larations r c ived ( e www.iso.org p t ent )

Any trade name used in this document is information given for the convenienc of use s an does not

cons itut e an en orsement

F or an ex lanation on the meaning of ISO spe ific t erms an ex r s ions r lat ed t o conformity

as es ment, as wel as information a out ISO’ s adhe enc t o the WTO principles in the Te h ical

Bar ie s t o Trade (TBT) se the fol owing URL: F or word - Sup lementary information

The committ ee r sponsible for this document is ISO/TC 2 , Ro d vehicles , Subcommitt ee SC 34,

Pro ul s io ,p wertrain a d p wertrain fluids

This se on edition canc ls an r plac s the f irs edition (ISO 66 4-2:2 0 ), which has be n

te h icaly r vised

ISO 6 24 consis s of the folowing p rt , un e the gene al title Inte rn l comb s tio e ngines — Pis to rin s :

— Part 1: Keys to e rin s made o c as t iro

— Part 2 : Halfkeys to e rin s made o c as t iro

— Part 3: Keys to e rin s made o s te l

— Part 4: Halfkeys to e rin s made o s te l

ISO 6 24 is one of a n mbe of se ies of Int ernational Standards dealng with pist on rings for

r ciprocating int ernal combus ion engines Othe s ar ISO 66 1,

Internal c ombustion eng ines — Piston ring s —

Part 2:

This part of ISO 66 4 spe if ies the es ential dimensional featur s of half key st one rings made of cas

iron, ty es HK, HKB an HKBA, ha ing nominal diamet ers from 38 mm up t o, an inclu ing, 1 0 mm,

used in r ciprocating int ernal combus ion pist on engines for ro d vehicles an othe a plcations

The folowing document , in w hole or in p rt, ar normatively r fe enc d in this document an ar

in ispensa le for it a pl cation F or dat ed r fe enc s, only the edition cit ed a pl es F or u dat ed

r fe enc s, the lat es edition of the r fe enc d document ( inclu ing any amen ment )a pl es

ISO 66 1-4, Inte n l c omb s tio en ines — Pi s to rin s — Part 4: G ene al s pec ific atio s

The half keyst one ring ty es ar spe if ied in Ta les 1 an 2 an Figur s 1 t o 3 Their common featur s

an the dimensions of those featur s ar spe ified in Ta les 3 an 4 and Figur s 4 t o 9 Ta les 5 an 6

give the for e fact ors for the dife ent ring ty es, w hie Ta le 7 gives the dimensions an for es of half

key st one rings

The common featur s an dimensional ta les pr sent ed in this p rt of ISO 6 24 cons itut e a bro d

rang e of v ria les an , in sele ting a p rticular ring ty e, the designe shal bear in min the con itions

un e w hich it wi l be r q ir d t o o e at e

It is also es ential that the designe r fe t o the spe if ications an r q ir ment of ISO 6 2 -3

[4]

an

ISO 66 1-4 befor completing sele tion

4 Ring types and desig nation examples

NOTE F or the angle of half key st one rings, the same def inition an me surement ap ly as for key st one rings

(se ISO 6 2 -2)

4.1 T ype HK — Straight fac ed half keystone ring 7°

4.1.1 General fe tur es

Figur 1 show s the g ene al featur s of pist on ring ty e HK

S e Ta le 7 for dimensions an for es

h

3

v lues ar calculat ed b sed on An ex A

1 r efer ence plane (ring is positioned flat ag ainst datum A )

2 top side identification mar k

Figure 1 — Ty e HK

4.1.2 Desig nation

E AMP E Designation of a pist on ring complying with the req irements of ISO 6 24-2, b ing a 7° half

keyst one ring made of cast iron, with a straight-faced perip eral surface (HK), of d

1

= 9 mm ( 90), of nominal

ring width h

1

= 1,5 mm (1,5), made of he t re t ed martensitic sp eroidal grap ite cast iron, subclas 5 (MC5 ),

an having a chromium plat ed perip eral surface with a minimum thick es 0,1 mm (CR2) Parameter in

parenthesis are used in the ISO ring designation:

Piston ring ISO 6624- 2 HK - 90 × 1,5 - MC53/CR2

4.2 T ype HKB — Barrel fac ed half keystone r ing 7°

4.2.1 General fe tures

Figur 2 shows the g ene al featur s of pist on ring ty e HKB

S e Ta le 7 for dimensions an for es

h

3

v lues ar calculat ed b sed on An ex A

2

a

Key

1 reference plane (ring is positioned flat against datum A )

2 top side identification mark

Dimensions in milimetr es

4.2.2 Desig nation

E AMP E Designation of a pist on ring complying with the req irements of ISO 6 24-2, b ing a 7° half

keyst one ring made of cast iron, with a b r el faced perip eral surface (HKB), of d

1

= 9 mm ( 90), of nominal ring

width h

1

= 1,5 mm (1,5), made of non-he t-tre t ed grey cast iron, subclas 1 (MC1 ), an having a chromium

plat ed perip eral surface with a minimum thick es of 0,1 mm (CR2) Parameter in parenthesis are used in the

ISO ring designation:

Piston ring ISO 6624- 2 HKB - 90 × 1,5 - MC12/CR2

4.3 T ype HKBA — A symmetr ical bar r el fac ed half keystone ring 7°(h

1 ≥ 1,2 mm)

1 r efer ence plane (ring is positioned flat ag ainst datum A )

2 top side identification mar k

a

Nominal

Figure 3— Ty e HKBA

Table 2 — Asymmetrical bar el dimensions

Dimensions in milimetr es

h

1

h

2a

tb

E AMP E Designation of a pist on ring complying with the req irements of ISO 6 24-2, b ing a 7° half

key st one ring made of cast iron, with an asymmetrical b r el faced perip eral surface (HKBA), of d

1

( 90), of nominal ring width h

1

= 1,5 mm (1,5), made of non-he t-tre t ed grey cast iron, subclas 1 (MC1 ),

an having a chromium plated perip eral surface with a minimum thick es of 0,1 mm (CR2) Parameter in

parenthesis are used in the ISO ring designation:

Piston ring ISO 6624- 2 HKBA - 90 × 1,5 - MC12/CR2

5.1 T ype HK, HKB and HKBA — Half keystone ring

5.1.1 Unc oated ring s

Key

1 top side identification mark

Figure 4 — Uncoated rings

5.1.2 C r omium plated or spray c oated ring s

1 top side identification mar k

Figure 5 — F ly faced rings

5.1.2.2 S mi inlaid

Key

1 top side identification mar k

Figure 6 — S mi inlaid rings

5.1.2.3 Inlaid (not r ecommended for chr omium plated ring s)

1

Key

1 top side identification mar k

Figure 7 — Inlaid rings

5.2 Chamfer ed edg es — T ype HK, HKB and HKBA ring s — Outside and/ r inside

chamfer ed edg es (KA , KI)

d) Chamfered edg es

Key

1 top side identification mark

Figure 8 — Detai s of chamfered edg es (KA, KI

Table 3 — KA and KI dimensions

Dimensions in mil imetr es

5.3 T ype HK, HKB and HKBA r ing s ( ull y fac ed, semi inlaid) — Plating /c oating thicknes

Figure 9 — Plating coating thicknes

Table 4 — Plating coating thicknes

Dimensions in mil imetr es

SCa

0,1

CR4a

SCa

The tang ential an diametral for es given in Ta le 7 shal be cor e t ed w hen ad itional featur s or

mat erials othe than gr y cas iron with a mod lus ofelas icity, E

n, of 1 0 GN /m

2

, or b th, ar used

F r common featur s, multiple cor e tion fact ors given in Ta les 5 an 6 an the for e cor e tion

fact ors spe if ied in ISO 6 2 -4 shal be used

Table 5 — F or e cor ectio factor for HK, HKB and HKBA rings with fe tures KA or KI

F act or

Table 6 — F or e cor ectio factor for chromium plated and spray coated HK, HKB and HKBA

rings (ful y faced, semiinlaid and inlaid ty e)

Table 7 — Dimensio s an for es of HK, HKB and HKBA half key stone rings

-+

Dimensions in mi imetr es

-Table 7 — (c ontin ed)

Table 7 — (c ontin ed)

-Table 7 — (c ontin ed)

Table 7 — (c ontin ed)

2,5 3,0 3,5 2,0

0,7

max

—1,7 9

Table 7 — (c ontin ed)

Table 7 — (c ontin ed)

Table 7 — (c ontin ed)

NO E 1 F r inte mediate siz s ( for ex mple r p ir siz s ), the ra ial wal thick e s of the next smale n min l diamete sh uld be a pled

NO E 2 The v lue for F

t

a d F

d, giv en in Ta le 6, a ply to gr y cast iro with a ty ical mo ulus of elasticity (E

n) of 1 0 GN/m

2

Multiplyin

factor for mate ials h vin a dife ent mo ulus of elasticity (E

n) ar giv en in ISO 6 2 -4 Mea for e ar calculated for n min l ra ial

wal thick e s (a

1

) a d mea rin width (h

1)

NO E 3 F r the sole p rp s of this p rt of ISO 6 2 , the as umed av era e ratio F

d/F

t

is 2,1 How ev er, for rin s u to 5 mm, the ratio F

d/

A nne x A

(normative)

3

The measur ment width, h

3, asdef ined in DINis calculat ed ac ording t o F rmula (A.1):

As the dimensioning of key st one rings in the ISO s an ard dife s signif icantly from the dimensioning

ac ording t o the old DIN s an ard an the t ole anc v lues in the ISO s an ard ha e be n inc eased,

a cor e tion v lue ( h

3k) for the ac urat ely calculat ed measur ment width h

3has be n introd c d t o

ensur contin ed comp tibi ity of the rings ac ording t o the ISO s an ards The efor , the measur ment

1( e Ta le A.1):

Table A.1 — Cor ectio value

Nominal diamet er

d

1[mm ]

Bibl og raphy

[1] ISO 1 0 , Technic al draw in s — G eometric al tole a c in — Tole a c in o frm, orientatio ,

loc atio a d run-o t — G ene alties,de initions, sy mb ls, indic atio s o draw in s

[2] ISO 66 1-1, Inte n l c omb s tio en ines — Pi s to rin s — Part 1: Voc ab lar y

[3] ISO 66 1- 2, Inte n l c omb s tio en ines — Pi s to rin s — Part 2 : Ins pec tio meas urin princ iples

[4 ] ISO 66 1-3, Internal c omb s tio en ines — Pi s to rin s — Part 3: Mate ial s pec ific atio s

[5] ISO 66 1-5, Inte n l c omb s tio en ines — Pi s to rin s — Part 5: Qu lt y r q ir ment

[6] ISO 6 2 -1, Inte rn l comb s tio e ngines — Pisto rin s — Part 1: Re c ta g lar rin s made o cas t iro

[7] ISO 66 2- 2, Inte n l c omb s tion en ines — Pi s to rin s — Part 2 : R ec ta g lar rin s made o s te l

[ 8] ISO 66 3, Inte n l c omb s tio en ines — Pi s to rin s — Sc ra e rin s made o c as t iro

[ 9] ISO 66 5, Inte n l c omb s tion en ines — Pi s to rin s — Oi c ontrol rin s

[1 ] ISO 66 6-1

1)

, Internal c omb s tion en ines — Pi s to rin s — Coi s prin lo ded oi c ontrol rin s

[1 ] ISO 6 2 - 2, Inte n l c omb s tio en ines — Pi s to rin s — Part 2 : Coi s prin -o ded oi c ontrol

rin s o n r ow w idth made o c as t iro

[1 ] ISO 6 2 -3, Inte n l c omb s tio en ines — Pi s to rin s — Part 3: Coi s prin -o ded oi c ontrol

rin s made o s te l

[1 ] ISO 66 7, Inte n l c omb s tio en ines — Pi s to rin s — Expa de /segment oi c ontrol rin s

1) To b p blished (r evision of ISO 6 26:1 8 )

ICS  43.060.10

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