1. WPS theo ISO 15607 (EN 288).Hng dn lp WPS ISO 15609.1. Kim
loi c bn (Parent metal):- Ch nh loi vt liu c bn v tham kho tiu
chun- Nhm, phn nhm vt liu theo ISO 15608 (hng dn phn loi ISO 20172,
20173, 20174)2. Kch thc ca vt liu (material dimensions)- dy ca lin
kt- ng knh ngoi ca ng.3. Qu trnh hn (Welding process)- Qu trnh hn s
dng cho WPS; ph hp theo ISO 4063: VD: ISO 4063-135 (MAG 135 of ISO
4063).4. Lin kt hn thit k (Joints design)- Phc ha lin kt hn thit k
hoc tham chiu n tiu chun c th tm c thng tin c th- Phc ha th t hn nu
cn thit m bo cc thuc tnh hn.5. V tr hn (Welding position)- V tr hn
p dng cho WPS; ph hp theo ISO 6947: VD: ISO 6947-PF hoc PF.6. Chun
b lin kt hn ( Joint preparation):- Phng php chun b chung, lm sch,
ty du m, ch nh r phng php thc hin.- g hn, phng php c nh v phng n
thc hin.7. K thut hn (welding technique):- Dao ng hn (nu s dng):+
Hn th cng: chiu rng ti a ca dao ng.+ Hn t ng v bn t ng: Bin ti a,
tn s dao ng v thi gian dng ca dao ng.
Gc m hn, gc in cc.8. Khot y (Back gouging)- Phng php c s dng.-
su v hnh dng.9. Lt y (Backing):- Cc phng php lt y, vt liu lt y v
kch thc.- Trong trng hp dng kh lt y phi ph hp theo ISO 14172.10. Vt
liu hn (Welding consumable)- Thit k, ch to (cc nh sn xut v tn thng
mi).- Kch thc (kch c)- X l (x l nhit, ni kh thong, lm kh li,)11.
Thng s in hn (Electrical parameters)- Dng xoay chiu (AC), dng mt
chiu(DC) v phn cc.- Chi tit hn xung (ci t my, chng trnh) nu p dng.-
ln ca in.12. C gii ha v t ng hn.- ln vn tc hn.- Tc cp dy.Nu cc thit
b khng cho php kim sot mt trong 2 gi tr trn, my s c ci t thm thit b
thay th. WPS c gii hn cho cc thit b .13. Gia nhit trc khi hn
(preheat temperature).- Nhit yu cu trc v trong sut qu trnh hn.- Nu
khng yu cu v gia nhit, nhit ca chi tit l nhit thp nht trc khi
hn.14. Nhit gia cc lp hn (Interpass temperature)- Nhit ln nht gia
cc lp hn.15. Nhit duy tr (preheat maintenance temperature)- Nhit cn
duy tr ti thiu nu qu trnh hn b gin on.16. Nhit cn kh ht hydro
(Post-heating for hydrogen release)- ln ca nhit .- Thi gian gi
nhit.17. Nhit x l (Post-weld heat-treatment).- Ch nh thi gian v
nhit x l nhit sau khi hn hoc tham chiu n tiu chun tng ng tra cu
thng tin.18. Kh bo v (Shielding gas):- Ph hp theo tiu chun ISO
14172 ; tn, thnh phn, nh sn xut kh c p dng. VD: ISO 14172-C1.19.
Nng lng ng nng lng hn (heat input):- ln ca nng lng hn (nu c yu
cu).
20. Cc thng s root face, root opening, Groove angle: ly theo ti
liu thit k nu khng ch nh ly theo ISO 9692.
y l bn pWPS. WPS ging ht nh th nhng sau khi lp WPQR. tham kho
thm ISO 15609-1 , ISO 15607, v ISO 15614
