1. Ububanzi kunye noHlelo

Inkqubo Yokuvelisa: Isebenza kwiipayipi zentsimbi ezidityanisiweyo ezifana ne-electric resistance welding (ERW) kunye ne-submerged arc welding (SAW).

Uhlu: Luhlulwe ngokweCandelo A (inqanaba elisisiseko) kunye neCandelo B (inqanaba eliphambili) ngokobungqongqo bohlolo. I-P355NH idla ngokuhanjiswa njengeCandelo B.

2. Iimeko zokuhanjiswa ngokubanzi

Umgangatho womphezulu: Akukho ziphene ezifana nokuqhekeka nokugoba. Isikali se-oxide esincinci siyavunyelwa (asiyichaphazeli indlela yokuhlola).

Ukuphawula: Umbhobho ngamnye wentsimbi kufuneka uphawulwe ngenombolo eqhelekileyo, uhlobo lwentsimbi (P355NH), ubungakanani, inombolo yesithando somlilo, njl. (EN 10217-1).

Ukunyamezelana kobukhulu (EN 10217-1)

Ipharamitha	Iimfuneko zokunyamezelana kweKlasi B (zisebenza kwiP355NH)	Indlela yovavanyo (EN)
Ububanzi obungaphandle (D)	±0.75% D okanye±1.0mm (ixabiso elikhulu)	I-EN ISO 8502
Ubukhulu bodonga (t)	+10%/-5% t (t≤15mm)	Umlinganiselo wobukhulu be-ultrasonic (EN 10246-2)
Ubude	+100/-0 mm (ubude obungaguqukiyo)	Uluhlu lweLaser

 

Iinkcukacha eziphambili zenkqubo yombhobho wentsimbi we-P355NH

1. Ulawulo lwenkqubo yeWelding (EN 10217-3)

Umbhobho wentsimbi we-ERW:

Unyango lobushushu olukwi-intanethi luyafuneka emva kokuwelda rhoqo (ukufudumeza kwe-induction ukuya kuma-550~600℃kunye nokupholisa kancinci).

Ulawulo lokukhupha umthungo we-Weld:≤Ubukhulu bodonga obuyi-10% (ukuthintela ukudibana okungaphelelanga). 

Umbhobho wentsimbi ye-SAW: 

Ukuwelda ngeengcingo ezininzi (iintambo ezi-2 ~ 4), igalelo lobushushu≤35 kJ/cm (ukuthintela ukurhabaxa kwe-HAZ). 

1. Iinkcukacha zonyango lobushushu (EN 10217-3 + EN 10028-3)

Inkqubo	iiparameter	Injongo
Ukulungisa (N)	910±10℃×1.5min/mm, ukupholisa umoya	Coca iinkozo zibe yi-ASTM 6~8 grade
Ukunciphisa uxinzelelo (SR)	580~620℃×2min/mm, ukupholisa i-furnace (≤200℃/h)	Susa uxinzelelo olushiyekileyo lwe-welding

3. Uvavanyo olungonakalisi (EN 10217-1 + EN 10217-3)

Uvavanyo lwe-UT:

Uvakalelo:ΦUmngxuma ongaphantsi othe tyaba oyi-3.2mm (EN ISO 10893-3). 

Ugqumo: 100% weld + 10mm izinto eziphambili kumacala omabini. 

Uvavanyo loxinzelelo lwamanzi: 

Uxinzelelo lovavanyo = 2×uxinzelelo olusebenzayo oluvumelekileyo (ubuncinci be-20MPa, ukubamba uxinzelelo≥15s).

Iimfuno ezongezelelweyo zezicelo ezikhethekileyo

1. Ukuqina kwempembelelo kubushushu obuphantsi (-50℃)

Imigaqo eyongezelelweyo yesivumelwano:

Amandla empembelelo≥60J (umndilili), isampuli enye≥45J (EN ISO 148-1). 

Sebenzisa inkqubo yokususa ioksijini edityanisiweyo ye-Al+Ti ukunciphisa umxholo weoksijini (≤30ppm). 

2. Amandla okunyamezela obushushu obuphezulu (300)℃)

Uvavanyo olongezelelweyo:

Amandla okuqhekeka kwe-creep rupture iiyure ezili-10^5≥I-150 MPa (ISO 204).

Idatha yokuxinana yobushushu obuphezulu (Rp0.2@300)℃ ≥I-300 MPa) iyafuneka.

3. Iimfuno zokumelana nokugqwala

Inkqubo yokuzikhethela:

Ingaphakathi eludongeni shot peening (Sa 2.5 kwinqanaba, EN ISO 8501-1).

Udonga lwangaphandle lugqunywe nge-alloy ye-Zn-Al (150g/m2)², Isihlomelo B se-EN 10217-1).

Amaxwebhu oMgangatho kunye neSatifikethi (EN 10217-1)

Isiqinisekiso sokuhlolwa:

Isatifikethi se-EN 10204 3.1 (ukuzihlola ngokwakho kwesityalo sentsimbi) okanye iSatifikethi se-3.2 (isatifikethi somntu wesithathu).

Kufuneka iquke: ukwakheka kweekhemikhali, iimpawu zoomatshini, iziphumo ze-NDT, ijika lonyango lobushushu.

Uphawu olukhethekileyo:

Imibhobho enobushushu obuphantsi iphawulwe ngo-"LT" (-50)℃). 

Imibhobho enobushushu obuphezulu iphawulwe ngo-"HT" (+300℃).

Iingxaki eziqhelekileyo kunye nezisombululo

Ingxaki Engaqhelekanga	Uhlalutyo lweMbango	Izisombululo (ezisekelwe kwiMigangatho)
Amandla angonelanga empembelelo ye-welds	iinkozo zeHAZ ezirhabaxa	lungisa igalelo lobushushu lokuwelda≤25 kJ/cm (EN 1011-2)
Ukuvuza kovavanyo lwe-hydraulic	Iiparameters zomatshini wokulungisa ezingalunganga	Ukuhlolwa kwakhona kwe-UT kwecandelo lonke lombhobho + ukuhlolwa kwe-radiographic yendawo (EN ISO 10893-5)
Ukuphambuka kobukhulu (i-ovality)	Iiparameters zomatshini wokulungisa ezingalunganga	Ukulungisa kwakhona (EN 10217-1)

Ngokudibanisa imiqathango eqhelekileyo ye-BS EN 10217-1 kunye neemfuno ezikhethekileyo ze-BS EN 10217-3, umgangatho wenkqubo yonke yombhobho wentsimbi we-P355NH ukusuka ekukhethweni kwezinto ukuya ekwamkelweni kwemveliso egqityiweyo unokulawulwa ngokupheleleyo. Xa uthenga, kucetyiswa ukuba ucaphule ngokucacileyo inguqulelo eqhelekileyo (efana ne-BS EN 10217-3:2002+A1:2005) kunye nezivumelwano zobugcisa ezongezelelweyo (ezifana ne--50).℃iimfuno zempembelelo) kwisivumelwano.