1. Cov txheej txheem tawv tawv rau Q355Nh
Txij li Q355Snh yog aTsawg-alloy qauv txheej txheem, Tsoos ib txwm muaj cov tawv tawv (quenching & tempering) tsis haum. Hloov chaw, hauv qab noNto Kho Kev Kho Mobtuaj yeem thov:
| Txojkev | Kev ua | Hardness tiav | Cov Ntawv Thov |
|---|---|---|---|
| Nplaim taws ua kom tawv | Cua sov saum npoo nrog lub teeb oxy-acetylene ua raws li los ntawm kev quenching ceev | 45-55 hrc | Zog, ntaub qhwv |
| Induction hardening | High-zaus Induction Cua Sov + Quenching | 50-60 hrc | Cov kabmob sib tw |
| Laser Hardening Laser | Precision Laser cua sov + tus kheej-quenching | 55-65 hrc | Cov Khoom Siv Loj |
| Carburizing | Txawv carbon rau hauv saum npoo ntawm Temps High (~ 900 degree) | 58-63 HRC | Zog, pins |
| Nitriving | Nitrogen diffusion ntawm 500-600℃(roj lossis ntshav) | 800-1200 hv | High-hnav, corrosion-resistant seem |
| Hardfacing (Vuam) | Ua kom muaj cov ris-resistant alloy (piv txwv li, stellite, WC) ntawm vuam | 50-65 hrc | Tsuas, crushers |
2. Cov txheej txheem pom zoo rau Q355Snh
(1) induction hardening (zoo tshaj plaws ntawm hardness & distortion tswj)
Kev ua:
Ua kom sov saum npoo rau850-950 Qibsiv induction chev.
Quench nrogdej, polymer, lossis roj(nyob ntawm yuav tsum tau hardness).
Npau taws ntawm200-300 degreekom txo brittleness.
Kev nyuaj: 50-60 hrc(rooj plaub qhov tob: 1-5 hli).
Qhov Zoo:
Nrawm, hauv zos ua kom tawv.
Tsawg heev distortion (piv rau nplaim taws ua tawv).
(2) nitriving (rau corrosion + hnav tsis kam)
Kev ua:
Kub rau500-600 degreeHauv cov nitrogen-nplua nuj cua (roj lossis ntshav).
Cov ntaub ntawv atawv nitride txheej (fe₃n, fe₄n)tsis muaj quenching.
Kev nyuaj: 800-1200 hv(rooj plaub qhov tob: 0.1-0.5 mm).
Qhov Zoo:
Tsis muaj theem hloov →tsawg kawg nkaus distortion.
Txhim khoQaug zog & corrosion tsis kam.
(3) Laser hardening (precision cov ntawv thov)
Kev ua:
Laser Beam scans saum npoo, cua sov nws rauAustenitizing Kub (900-1000 Degree).
Kev ua tus kheej-quenching vim muaj cua sov sai sai.
Kev nyuaj: 55-65 hrc(rooj plaub cuam tshuam: 0.2-2 hli).
Qhov Zoo:
Ultra-ncaj ncees, tsis muaj quenching xov xwm xav tau.
Zoo tagnrho rauCov geometries complex.
3. Cov kev sib tw & kev txiav txim siab
(1) khaws cov khoom hluav taws xob
Nplaim / Induction Hardeningtej zaum yuav cuam tshuam rau qhov xeb patina tsim.
Nitrivingyog qhov zoo tshaj yog tias xeb kuj yuav tsum tau tswj hwm.
(2) Pre-& Tom Qab Kho Mob
Ua ntej tu: Tshem cov xeb / zeb teev ua ntej ua kom tawv tawv.
Kev ntxhov siab tau txais kev ntxhov siab: Pom zoo tom qab INDITTING / FAMNE Hardening kom txo qis cov kev ntxhov siab.
(3) Kev txhawj xeeb weldability
Yog tias ib feem yog welded post-hardening,Haz muag muag muagtej zaum yuav tshwm sim.
Lus teb: Ua neeg tawv tawvTom qab vuam.
4. Kev sib piv ntawm cov hau kev
| Yam tseem ceeb | Induction | Nitriving | Laser | Nplaim taws |
|---|---|---|---|---|
| Hardness (HRC) | 50–60 | 60-70 (hv) | 55–65 | 45–55 |
| Case Qhov tob (mm) | 1–5 | 0.1–0.5 | 0.2–2 | 1–6 |
| Txawv | Qi | Tsawg heev | Tsawg tsawg | Tswj kav |
| Tus nqi | Nruab nrab | Siab | Siab | Qi |
