Muaj peev xwm quenching thiab tempering txhim kho txoj kev cuam tshuam nyuaj ntawm s3555j0wp?

Quenching thiab tempering (Q & T)feem ntau tsis pom zoo rau s355j0wpThiab tsis tshua muaj siv txhawm rau txhim kho nws cov kev cuam tshuam tawv -}} kev ua tau zoo, huab cua tsis muaj, tsawg} kub ductility). Ntawm no yog cov ncauj lus kom ntxaws:

1. Vim li cas kev tso dag ib leeg ua phem s355j0wp cov khoom

S3555j0wp yog qhov qis - huab cua resistant steel nrog sib npaug ntawm 0.12% thiab cov khoom sib luag (MN, CU, CU, CU, CU, CU, CU, CU, CU, CU, CU, CU, CU, CU, CU, CU, CU Quenching (nrawm txias hauv dej / roj tom qab Austenitization) ua rau muaj kev tsim ntawmtus ntaus tswv{{0- ib qho nyuaj tab sis tsis tshua muaj microstructure:

Martensite tsa cov ducat - brutrptle hloov pauv (DBTT)

Nws Drastically Txo Qhov Cuam Tshuam Cov Cuam Tshuam: Quenched S355J0WP yuav muaj 0℃cuam tshuam lub zog<10 J (far below the 27 J minimum), failing basic performance standards.

2. Tempering tsis tuaj yeem cawm txoj kev cawm nruj, thiab cov huab cua tsis txaus ntshai

Thaum tempering (Rov ua dua cov hlau quenched rau 200-650 degree) tuaj yeem soften martensite thiab nws muaj ob qho kev txwv tseem ceeb rau s355j0wp:

Tsis txaus ua kom sai: Txawm tias tom qab siab - kub npau taws (550-6 microstructure rerrite {}} pumble qauv. 0 DEGREE cuam tshuam lub zog feem ntau tsuas yog txo rau 15-20 j- tseem rov qab rau 27 J requirementement.

Arepaded huab cua tiv: S3555j0wP kev vam khom rau CU thiab CR los ua cov txheej xeb tuab tuab. Siab - kub tempering (saum 500 degree) tuaj yeem ua rau cu / crcount ntawm cov noob qes, txhawm rau txhawm rau txhim kho corrosion thiab txo cov corrosion tsis kam los ntawm 30-40%.

3. Cov kev xaiv zoo dua rau Q & T rau S355j0wP

Rau kev txhim kho kev cuam tshuam todness thaum khaws cov huab cua tiv taus thiab ductility, cov txheej txheem zoo lili no, normalizing + tempering, lossisTMCP (Thermo - i} Txhua yam Txheej Txheem Txheej Txheem)muaj ntau dua haum (raws li sau tseg ua ntej):

Cov txheej txheem no ua kom ua kom ua kom ua kom zoo nkauj ferrite- pearlite moardtructure (tsis muaj kev cuam tshuam 0℃er

info-231-219 info-236-222

Koj Tseem Yuav Zoo Li

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