Ol rim bilong wil bilong mainingwok aninit long ol wok kondisen we i hat tru: hevi statik lod, kontinu impak long ol rot bilong main we i no stret, 'abrasive friction' wantaim ol hap ston na planti taim 'cyclic stress'. Sapos ol i no givim gutpela 'heat-treatment', ol 'forged steel rims' i isi long kisim hevi long 'surface wear', 'fatigue crack', 'permanent deformation' na 'sudden fracture', we i save kamapim bikpela hevi long taim bilong wok na sefti bilong ol masin bilong karim ol samting long maining.
Teknikel Data Tebol-Hit Tritmen Paramita & Pefomens Autkam
|
Hat-Tritmen Proses |
Proses Tempereja Range |
Taim bilong holim |
Bikpela wok long 'Mining Wheel Rim' |
Durability Improvement Effect |
Hevi bilong feil sapos yu no kisim dispela tritmen |
|
Normalisasen |
860-920 digri |
1.5-3 h |
Stretim ol 'grain structure', mekim ol metal insait long en i kamap wankain, rausim hevi bilong 'casting' o 'forging' |
Mekim strong bilong olgeta samting, daunim mak bilong ol bagarap insait long en; putim gutpela faundesen bilong mekim wok i kamap strong bihain |
Hatnes i no wankain, hevi bilong 'forging' i stap yet, 'premature crack initiation' aninit long bikpela hevi |
|
Pasin bilong kilim |
840-900 digri, wara/oil i save pinisim |
1-2.5 h |
Kwikpela kol long kamapim 'martensite' straksa, apim pes na 'core hardness' |
Strongim 'wear-resistance' na 'load-bearing capacity agensim 'mine gravel friction' |
Kwikpela 'surface abrasion', 'rim deformation' aninit long hevi wok bilong maining |
|
Tempering (Medium-High) |
480-620 digri |
2-4 h |
Lusim 'quenching brittleness', skelim strong na 'impact toughness' |
Stopim 'brittle fracture' aninit long planti 'shock load' insait long ol strongpela main aninit long graun |
Quench-induced internal cracking, sudden rim breakage under impact |
|
'Surface Hardening' (Induction Hardening) |
880-950 digri (lokal hiting) |
0.2-0.8 aua (lokal) |
Mekim strong tasol 'contact-wear surface; holim strong insait rim matriks |
Hap wear-resistant ausait pes taim holim sok-absorbim insait bodi |
Kwikpela 'groove wear', 'sealing-damej long 'surface', sotpela sevis saikel |
Heat tritmen em i nambawan gutpela rot bilong stretim 'internal microstructure' bilong 'wheel-rim steel', na i no long senisim ol 'outer dimensions' tasol. Olgeta wan wan step bilong hatim na kol i save lukluk long ol samting we i no strong tumas long ol 'mining rims'.
Normalisasen i save rausim ol 'uneven grain' we i kamap long 'hot forging'. Bihain long ol i wokim 'forging', ol 'metal greins' i save gro nating. Taim yu hatim i go long tempereja we yu makim na mekim i kol isi isi, ol 'grains' i save kamap gutpela na wankain, olsem na hevi bai no inap long kamap long ol liklik hap we i no gat strong taim 'rim' i karim bikpela hevi bilong maining.
Pasin bilong kilim i dai i save mekim strong bilong en i go antap tru. Dispela 'fast-cooling' proses i save pasim ol strongpela kristal straksa insait long ain, na dispela i mekim na 'rim' i no inap bagarap long ol 'ores' na ol sap pipia bilong main.
Em i bikpela samting long putim bikpela hat bihain long ol i kukim. Ol ain we i dai pinis i save kamap strong tasol i save bruk bruk. Tempering i save rausim 'internal quenching stress' na senisim hap hat bilong en long kamapim gutpela 'impact toughness'. Dispela samting i save pasim rim long bruk taim em i bam long ol hul insait long ol tanel aninit long graun o ol main i op.
Local induction surface hardening i givim wanpela gutpela rot bilong stretim hevi. Hap-wear kontek eria tasol i save kamap strong, na bikpela rim bodi i stap strong yet. Dispela disain i abrusim hevi we i save kamap planti taim: ol 'full-body over-hard' rim i save bruk isi taim yu kisim bikpela 'shock'.
Wantaim wanpela gutpela wokflo bilong hat-tritmen, pinisol rim bilong wil bilong mainingkisim longpela sevis laip, daunim ol 'unexpected failure rates' na gutpela adaptebiliti long longpela taim hevi-lod maining trenspot.