Tiêu chuẩn iso 06624 4 2016

© ISO 2016 Internal combustion engines — Piston rings — Part 4 Half keystone rings made of steel Moteurs à combustion interne — Segments de piston — Partie 4 Segments semi trapézoïdaux en acier INTERN[.]

Internal combustion eng ines —

Moteurs à comb stion inte ne — Segment de pisto —

Partie 4 : Segment semi-tra é ọda x en acier

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

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 Barrel fac d half keys one ring 7° (not r ecommen ed for nitrided ring s of code NT) 4

4.3.1 General featur es 4

4.3.2 Desig nation 6

5 Common fe tures 6

5.1 T ype HK , HK B an HK BA — Half keys one ring s 6

5.1.1 Nitrided ring s(not recommen ed for HKBA ring s with Nitrided code NT) 6

5.1.2 PVD ring s 6

5.1.3 Chromium plated or spra y co ted ring s 7

5.2 T ype HK , HK B an HK BA ring s — Outside an inside r ou ded edg es 7

5.3 T ype HK , HK B an HK BA ring s (uly fac d an inlaid) — Plating /co ting thicknes 8

5.4 T ype HK , HK B an HK BA ring s — Nitrided case depth 9

6 F rc e factor 10

7 Dimensions and for c es 10

A nne x A (normative) Calculatio of me sur ement width h 3 of half keystone r ing s 19

Biblog raphy 20

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 and r plac s the f irs edition (ISO 66 4-4:2 0 ), which has be n

t ech 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 6 2 ,

Internal c ombustion eng ines — Piston ring s —

This p rt of ISO 6 24 spe ifies the es ential dimensional featur s of half key st one rings made of st eel,

ty es HK, HKB an HKBA, ha ing nominal diamet ers from 5 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 pl cations

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, 2 an 3 Their common

featur s an the dimensionsof those featur s ar spe ified in Ta les 3 t o 6an Figur s 4 t o 1 Ta le 7

gives the for e fact ors for the dife ent ring ty es, w hie Ta le 8 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 – )

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

2

Key

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 piston ring complying with the req irements of ISO 6 24–4, b ing a 7° half

key st one ring made of ste l with a straight faced perip eral surface (HK), of nominal diameter d

1

= 60 mm (60),

of nominal ring width h

1

= 1,2 mm (1,2), made of CrSi aloyed st eelsubclas 62 (MC 2), an having a chromium

plated perip eral surface with a minimum thick es of 0,1 mm (CR2) Paramet er in parenthesis are used in the

ISO ring designation:

Piston ring ISO 6624-4 HK - 60 × 1,2- MC62/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

1

2

Key

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

2 top side identification mark

a

Nominal

Figure 2 — Ty e HKB

Table 1 — Symmetrical bar el dimensio s and g ug e width ( h

8)

Dimensions in milimetr es

4.2.2 Desig nation

E AMP E Designation of a piston ring complying with the req irements of ISO 6 24–4, b ing a half keyst one

ring made of st eel with a b r el faced perip eral surface (HKB), of nominal diameter d

1

= 60 mm (60), of nominal

ring width h

1

= 1,5 mm (1,5), made of martensitic ste l 1 %Cr (min ) subclas 65 (MC 5), an nitrided on the

perip eral surface an side faces (NT) to a depth of 0,0 0 mm min on the perip eral surface (0 0), with an

as ociat ed side face depth of 0,0 5mm min Parameter in parenthesis are used in the ISO ring designation:

Piston ring ISO 6624-4 HKB - 60 × 1,5 - MC 5 /NT050

4.3 T ype HKBA — A symmetr ical Barrel fac ed half keystone r ing 7° (not r ecommended

2

a

Key

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

2 top side identification mark

a

Nominal

Figure 3— Ty e HKBA

Table 2 — Asymmetrical bar el dimensions

Dimensions in milimetr es

h

1

h

2a

tb

4.3.2 Desig nation

E AMP E Designation of a piston ring complying with the req irements of ISO 6 24–4, b ing a half

keyst one ring made of st eel with an asymmetrical b r elfaced perip eral surface (HKBA), of nominal diameter

d

1

= 8 mm ( 80), of nominal ring width h

1

= 2,0 mm (2,0), made of mart ensitic ste l 1 %Cr min subclas 65

(MC 5), an PVD on the perip eral surface (P ) to a depth of 0,0 0 mm min on the perip eral surface (01 )

Parameter in parenthesis are used in the ISO ring designation:

Piston ring ISO 6624-4 HKBA - 8 × 2,0 - MC65 /PC0 0

5.1 T ype HK, HKB and HKBA — Half keystone r ing s

5.1.1 Nitr ided r ing s (not r ecommen ed for HK BA ring swith Nitrided code NT)

Key

1 top side identification mar k

Figure 4 — Nitrided rings

5.1.3 C romium plated or spray c oated r ing s

1 top side identification mark

Figure 6 — F ly faced rings

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

Key

1 top side identification mark

Figure 7 — Inlaid rings

5.2 T ype HK, HKB and HKBA ring s — Outside and inside rounded edg es

Figure 8 — Outside and inside ro nded edg es

Table 3 — h

xand h

Figure 9 — Plating coating thicknes

Table 4 — Chromium plating spray coating thicknes

Dimensions in mil imetr es

SCa

0,1

CR4a

SCa

Table 5 — PVD coating thicknes

Dimensions in milimetr es

C de Pe ip e al surfac

min

P 0 0a

0,0 0

P 0 0a

0,0 0

P 0 0a

0,0 0

P 040a

0,040

P 0 0a

0,0 0

a

not y ic l for Diamon Lik e Carbon c atin s (DL )

5.4 T ype HK, HKB and HKBA ring s — Nitr ided case depth

Key

1 top side identification mark

Figure 1 — Nitrided case depth

Table 6 — Nitrided case depth of peripheral surface and bottom side face

Dimensions in mil imetr es

C de

Nitrided case depth min

N TE Nit ided c se depth on top side fa e an on inside sura e not pe ified

Table 7 — Nitrided case depth of peripheral surface and side faces (not recommended for HKBA

rings)

Dimensions in mil imetr es

C de

Nitrided case depth min

N TE Nit ided c se depth on inside sura e not pe ified

Table 5 (c ontin ed)

C de

Nitrided case depth min

F or common featur s, multipl e cor e tion fact ors given in Ta le 8 shal be used The for e cor e tion

fact ors for the ratio m/(d

1

− a

1), spe ified in ISO 6 2 -4, shal be used

Table 8 — F or e cor ectio factor for chromium plated, spray coated, PVD coated an nitrided

HK, HKB and HKBA rings

Table 9 — Dimensio s and for es of HK, HKB and HKBA half key stone

,3 3,6

1,8 3

1,0

1,341,5 1,8 1,67

0/-0,19

Dime sio s in mi imetr es

Table 9 — (c ontin ed)

Table 9 — (c ontin ed)

1,6 3,83

Table 9 — (c ontin ed)

Table 9 — (c ontin ed)

Table 9 — (c ontin ed)

Table 9 — (c ontin ed)

Table 9 — (c ontin ed)

n) of 2 0 G /m

2

Me n

forc s are c lculated for nominal radial wal thick es (a

1) an me n rin width (h

1)

N TE 3 For the sole p rpose of this par of ISO 6 24, the as umed average ratio F

dF

t

is 2,1 How ever, for rin s u to

50 mm the ratio F

dF

tshal be determined between man fa turer an cus omer

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 ty of the rings ac ording t o the ISO s an ards The efor the measur ment

3k

(A.2)

The cor e tion v lue, h

3k, is depen ent on the nominal diamet er, d

1( e Ta le A.1)

Table A.1 — Cor ectio value

Nominal diamet er

d

1[mm ]

Cor ection value

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 lo ded oi c ontrol

rin s o n r ow rin 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 tion en ines — Pi s to rin s — Ex pa de /s egment oi c ontrol rin s