Skont ir-rekwiżiti tal-prestazzjoni tal-pajp tal-azzar tal-pipeline GB/T9711.1, skont it-temperatura tat-tempra differenti, tista 'tinqasam f'dawn it-tipi ta' ttemprar:
[1] Ittemprar b'temperatura baxxa (150-250 grad)
Il-mikrostruttura miksuba permezz ta 'temperatura baxxa hija martensite ittemprat.L-għan tiegħu huwa li jnaqqas l-istress tat-tifi u l-fraġilità ta 'l-azzar imwebbes fuq il-premessa li żżomm l-ebusija għolja u r-reżistenza għolja għall-ilbies tiegħu, sabiex tevita qsim jew ħsara prematura waqt l-użu.Jintuża prinċipalment għal kull tip ta 'għodod tal-qtugħ tal-karbonju għoli, għodod tal-kejl, pajp tal-azzar tal-pipeline GB/T9711.1, rolling bearings u partijiet tal-karburizzazzjoni, eċċ., L-ebusija wara t-temprar hija ĠENERALMENT HRC58-64.
[2] Temperatura moderata (250-500 grad)
Il-mikrostruttura miksuba bit-ttemprar moderat hija trostite ittemprat.L-iskop huwa li tinkiseb saħħa ta 'rendiment għoli, limitu elastiku u toughness għolja.Għalhekk, huwa prinċipalment użat għal kull tip ta 'pajp ta' l-azzar tal-pipeline GB/T9711.1 u trattament ta 'moffa sħuna, wara li l-ebusija tat-tempra hija ġeneralment HRC35-50.
[3] Ittemprar b'temperatura għolja (500-650 grad)
Il-mikrostruttura miksuba mill-ittemprar f'temperatura għolja hija sortensite ittemprat.Komunement, it-trattament tas-sħana flimkien mat-tifi u t-tempra jissejjaħ it-tifi u t-tempra.L-għan tiegħu huwa li tikseb proprjetajiet mekkaniċi komprensivi aħjar ta 'saħħa, ebusija, plastikità u toughness.Għalhekk, huwa użat ħafna fil-karozzi, pajp tal-azzar tal-pipeline GB/T9711.1, għodod tal-magni u partijiet strutturali importanti oħra, bħal virga tal-konnessjoni, bolt, ger u xaft.L-ebusija wara l-ittemprar hija ġeneralment HB200-330.
Standard
API SPEC 5L - Standard tal-Istitut Amerikan tal-Pitrolju
GB/T9711 -- Standard nazzjonali taċ-Ċina
Użi
Użat għall-pajp tal-ġarr tal-ossiġnu, ilma u żejt fl-industrija taż-żejt u tal-gass naturali
Produzzjoni ewlenija tal-gradi tal-pajpijiet tal-azzar:
B, X42, X52, X60, X65, X70 L245 L290 L320 L360 L390 L450 L485
Proprjetajiet mekkaniċi
Standard | Livell tal-Prodott | Grad tal-Azzar | Qawwa tar-Rendiment (min), Mpa | Qawwa tat-tensjoni (MPa) |
API 5L GB/T9711.2 | PSL 1 | A jew L210 | 210 | 335 |
B jew L245 | 245 | 415 | ||
x42 jew L290 | 290 | 415 | ||
X46 jew L320 | 320 | 435 | ||
X52 jew L360 | 360 | 460 | ||
X56 jew L390 | 390 | 490 | ||
X60 jew L415 | 415 | 520 | ||
X70 | 483 | 565 | ||
PSL 2 | BR jew L245R | 245 ~ 450 | 415 ~ 760 | |
X42R jew L290R | 290~495 | 415 ~ 760 | ||
BN jew L245N | 245 ~ 450 | 415 ~ 760 | ||
X42N jew L290N | 290~495 | 415 ~ 760 | ||
X46N jew L320N | 320~525 | 435 ~ 760 | ||
X52N jew L360N | 360 ~ 530 | 460 ~ 760 | ||
X56N jew L390N | 390~545 | 490~760 | ||
X60N jew L415N | 415~565 | 520 ~ 760 | ||
X65N jew L450N | 425~566 | 525 ~ 760 | ||
X70 jew L480 | 484~565 | 565~768 | ||
X80 | 552~690 | 621~827 |
Tabella ta' Elementi kimiċi fil-pipeline
Livell tal-Prodott | Grad tal-Azzar | Kompożizzjoni Kimika, % | ||||||||
C | Mn | P | S | U | IN | Nb | Of | CEpcm | ||
PSL 1 | B jew L245 | ≤0.28 | ≤1.20 | ≤0.030 | ≤0.030 | - | - | - | - | - |
x42 jew L290 | ≤0.28 | ≤1.30 | ≤0.030 | ≤0.030 | - | - | - | - | - | |
X46 jew L320 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | - | - | - | - | - | |
X52 jew L360 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | - | - | - | - | - | |
X56 jew L390 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | - | - | - | - | - | |
X60 jew L415 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | - | - | - | - | - | |
X70 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | - | - | - | - | - | |
PSL 2 | BR jew L245R | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | c | c | ≤0.04 | ≤0.25 |
X42R jew L290R | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.06 | ≤0.05 | ≤0.04 | ≤0.25 | |
BN jew L245N | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | c | c | ≤0.04 | ≤0.25 | |
X42N jew L290N | ≤0.24 | ≤1.30 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.06 | ≤0.05 | ≤0.04 | ≤0.25 | |
X46N jew L320N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.07 | ≤0.05 | ≤0.04 | ≤0.25 | |
X52N jew L360N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | ≤0.25 | |
X56N jew L390N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | ≤0.25 | |
X60N jew L415N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | - | |
X65N jew L450N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | - | |
X70N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | - | |
X80 | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 |
Ħin tal-post: Mejju-23-2022