Txoj Kev Ntsuas Lub Zog Ntawm Titanium Thiab Titanium Alloys - Xov Xwm

Muaj ntau txoj hauv kev los ntsuas qhov hardness ntawmcov ntaub ntawv titanium, thiab cov txheej txheem sib txawv yog tsim rau ntau hom khoom, hardness ranges, thiab sim scenarios. Hauv qab no yog ib qho piv txwv ntawm txhua txoj kev.

I. Standard Laboratory Methods Siv Indentation (Xav tau kev txiav txim siab)

1. Vickers Hardness HV (Feem ntau pom zoo hauv Titanium Kev Lag Luam; Nyiam rau Welds thiab Microstructure)

Txuj: ASTM E384
Lub hauv paus ntsiab lus: A 136℃pob zeb diamond quadrangular pyramid indenter yog siv los ua ib qho kev thauj khoom; tus nqi HV yog xam raws li kab pheeb ces kaum ntawm qhov indentation.

- Macro Vickers (HV5, HV10): Hardness ntawm forgings, tuav, thiab cov ntawv hlau matrices;
- Micro Vickers (HV0.05–HV1): Hardness ntawm welds, tshav kub- thaj tsam cuam tshuam, nitrided / anodized nto txheej, cov qauv me me, thiab thaj tsam metallographic grain / theem.
Qhov zoo: Kev thauj khoom dav dav, me me indentation, qis elastic modulus ntawm titanium, tsawg indentation rebound, thiab nyeem ntawv ruaj khov; haum rau yuav luag txhua cov ntaub ntawv titanium, suav nrog Gr5, thiab ntshiab titanium Gr2; dav pom nyob rau hauv cov ntaub ntawv luam tawm thoob ntiaj teb.
Qhov tsis zoo: Cov qauv yuav tsum tau polishing; kev sim qeeb.

2. Rockwell Hardness HR (Kev kuaj nrawm nrawm ntawm cov kab ntau lawm)

Txuj: ASTM E18
Txoj kev ntsuas qhov tob, ntau qhov ntsuas; Feem ntau siv rau titanium:

- HRB: Annealed ntshiab titanium, mos titanium alloys (Gr1/Gr2);
- HRC: Hnub nyoog- hardened titanium alloys (hnub nyoog-hardened Gr5, thiab lwm yam siab- zog forgings);
- Surface Rockwell HR15N/HR30N: Cov ntawv nyias nyias, nyias- cov phab ntsa titanium raj, thiab nto- tawv nyias txheej.
Qhov zoo: Kev sim ceev, kev npaj qauv yooj yim, me me indentation; haum rau batch zoo tshuaj xyuas ntawm cov khoom tuaj; dav siv nyob rau hauv Hoobkas lees txais kev kuaj ntawm titanium tuav thiab forgings rau export.
Disadvantages: Tsis haum rau nyias seem, nkhaus nto, los yog weld aav; Cov nplais saum npoo tuaj yeem ua rau 2-4 HRC yuam kev thiab yuav tsum tau muab tshem tawm.

3. Brinell Hardness HBW (cam khwb cia titanium, ntxhib-grained, loj ntoo khaub lig- ntu)

Txuj: ASTM E10
Cemented carbide pob indenter (cov pob steel ib txwm raug txwv, vim tias titanium tuaj yeem deform lub pob steel thiab ua rau yuam kev); F / D² yog teem rau 30.
Daim ntaub ntawv: Cam khwb cia titanium alloy Gr5, loj forgings; ua ib qho loj indentation uas qhia txog qhov nruab nrab hardness ntawm cheeb tsam thiab muab cov neeg sawv cev zoo rau cov qauv uas tsis yog -uniform microstructure.
Disadvantages: loj indentation; kev kuaj puas tsuaj; tsis tuaj yeem siv rau ntawm cov ntawv nyias nyias lossis qhov tseeb - cov khoom tiav.

4. Knoop Hardness HK (Ultra-thin titanium ntawv ci, txheej txheej nyias nyias)

Txuj: ASTM E384
Pob zeb diamond indenter nrog cov duab rhombic, ua rau ntev indentation. Haum rau tsis tshua muaj titanium strips, coated nto, thiab ntiav diffusion txheej; qhov indentation yog qhov ntiav heev, ua rau nws haum rau nyias txheej dua li micro-Vickers test; feem ntau siv rau anodized titanium nto.

Kev ceev faj tshwj xeeb rau kev kuaj titanium

1. Titanium muaj ib tug tsis tshua muaj modulus ntawm elasticity, thiab nws indentation rebound nyhuv yog ntau dua li cov hlau; Yog li ntawd, cov nplai thiab cov cim tig yuav tsum tau muab tshem tawm ntawm qhov chaw kuaj;
2. Rau kev kuaj Brinell, yuav tsum siv lub pob carbide rau HBW; steel pob rau HBS tsis tuaj yeem siv rau ntawm titanium alloys;
3. Rau nyias- cov phab ntsa phab ntsa, Vickers lossis nto Rockwell txoj kev nyiam kom tsis txhob nkag mus;

ASTM B381 Titanium forging rings Titanium hardness testing machine