1. Ol Besik Standet na Gret (GB/T 8263 Abrasion Resistant White Cast Iron)
Ol wankain gret bilong ol indastriel lain:
Cr15 → KmTBCr15Mo (15% chromium molybdenum high chromium cast iron)
Cr20 → KmTBCr20Mo (20% chromium molybdenum high chromium cast iron)
Cr26 → KmTBCr26 (26% hai 'chromium cast iron', liklik o nogat 'molybdenum')
Standet Kemikel Komposisen (Mas Fraksen)
表格
| Gret bilong ol samting | Cr | C | Mo | Si | Mn | Ol pipia P/S | Cr/C Resio |
|---|---|---|---|---|---|---|---|
| Cr15 | 14.0~18.0% | 2.8~3.4% | 0.4~0.8% | 0.4~1.0% | 0.5~1.2% | Liklik o wankain olsem 0.05% | 4.5~6 |
| Cr20 | 18.0~22.0% | 2.7~3.3% | 0.5~1.0% | 0.4~1.0% | 0.5~1.2% | Liklik o wankain olsem 0.05% | 5~7 |
| Cr26 | 24.0~28.0% | 2.2~3.0% | 0.3~0.6% | 0.3~0.9% | 0.4~1.0% | Liklik o wankain olsem 0.04% | 6~8 |
As tingting: Sapos i gat bikpela 'chromium' i save kamapim planti M₇C3 'chromium carbide hard phases'. Wanpela Cr/C resio namel long 4 na 8 i mekim 'carbide' i stap wankain na i go het, na i mekim 'wear resistance' na 'toughness' i stap wankain.
2. Metallographic Stracture & Mechanical Property Comparison
Olgeta tripela samting i gat ol 'tempered martensite', 'M₇C3' hatpela 'carbides' na liklik 'retained austenite'. 'Microhardness' bilong ol 'carbides' i kamap long HV1800~2200, na i stap olsem 'core wear-resistant skeleton.
Ol mak bilong wok bihain long standet hat tritmen
表格
| Pefomens Indeks | Cr15 Liner | Cr20 Liner | Cr26 Liner |
|---|---|---|---|
| Rockwell Hardness HRC | 58~61 | 59~62 | 60~65 |
| Impact Toughness k (J/cm2) | Bikpela o wankain olsem 7 | Bikpela o wankain olsem 8 | Bikpela o wankain olsem 8.5 |
| M₇C3 Carbide Volume Fraction | 22%~28% | 28%~35% | 35%~45% |
| Relative Wear Service Life (Benchmark) | 100% (Reference) | 140%~180% | 220%~300% |
| Erosen na Korosen Resistans | Everij | Gutpela | Nambawan |
| Maksimum Themal Fatigue Opereting Temp | Liklik o wankain olsem 300 digri | Liklik o wankain olsem 350 digri | Liklik o wankain olsem 400 digri |
Ol Difrens long Pefomens Lojik
Cr15: I no gat planti 'chromium' wantaim liklik 'carbides'. Strongpela samting i daunbilo liklik tasol pe bilong ol 'raw material' i liklik tru. Em i gutpela long ol wok we i no gat planti 'abrasion' na i gat bikpela pe bilong en.
Cr20: Balens level bilong 'chromium' wantaim gutpela 'trade-off namel long 'wear resistance', strong na pe bilong en. Ol bikpela 'liner material' we planti manmeri i save yusim long ol simen na maining indastri.
Cr26: Planti 'chromium' i save mekim 'carbide' i go antap tru, na i save givim strongpela 'top-tier strong, 'wear resistance', 'high-temperature resistance na 'acid-alkali erosion resistance'. Wanpela hevi tasol em bikpela prais bilong ol 'raw material'.
3. Standet Hit Tritmen Proses (Kritikal long Sevis Laip)
Ol i mas mekim olgeta wok bilong kukim na mekim i kamap hat long ol 'high chromium liner'. Olsem-ol 'cast liners' i save kamap tasol long HRC40~46, wantaim 'wear resistance' we i no winim 60% bilong ol 'heat-'tretim prodak.
Cr15 (KmTBCr15Mo) Quenching: Holim long 940~980 digri inap 2~4 aua, mekim i kol wantaim wanpela 'quenchant'; Tempering: Low-tempereja tempereja long 220~280 digri inap 3~6 aua long daunim hevi insait long bodi; Laspela hat HRC Bikpela o wankain olsem 59.
Cr20 (KmTBCr20Mo) Quenching: Holim long 980~1030 digri inap 2~5 aua; Tempering: Low-temperature tempereture long 230~290℃; Gutpela hat HRC60~62.
Cr26 (KmTBCr26) Quenching: Holim long 1010~1060 digri inap 3~6 aua long rausim olgeta 'secondary carbides'; Tempering: Holim long 250~300 digri inap 4~8 aua; Strong hat antap long HRC62. Tempereja i ken go antap liklik long ol hai-temperature sevis senario long strongim 'thermal stability'.
Ol Tambu Bilong Wokim: Ol i tambuim tru pasin bilong kilim na mekim win i kol antap long 400 digri, na dispela i save daunim strong bilong en na i no inap bruk.
4. Ol Wok Kondisen, Ikwipmen na Materiel bilong Wanwan Liner Gred
4.1 Cr15 High Chromium Liner (Economical Gred)
Ol samting we i ken kamap: Liklik 'abrasion', liklik '-diameter 'ball mils', 'soft raw materials', 'intermittent production' Ikwipmen: Ol liklik 'ball mills' Φ Liklik o wankain olsem 2.4m, ol 'coal mills', ol liklik 'fin sand crusers', ol 'low-erosion chutes Raw Materials: Coal lays, limlays, shale, na ol narapela samting 'medium-low hardness ores Gutpela samting: Lowest procurement cost, laitweight, low replacement expense Ol hevi: Sotpela sevis laip aninit long 'high-hardness ore na wok i go het long ful-lod; I no gutpela long 'wet grinding' wantaim 'acidic slurry' Ekspekted Sevis Laip: 3~5 yia, wankain olsem 60%~70% sevis laip bilong Cr20 lain aninit long wankain kondisen
4.2 Cr20 Hai Chromium Laina (Yunivesel Meinstrim Gret, Nambawan Maket Sea)
Ol samting we i ken kamap: Namel 'abrasion', 'dry & wet dual-purpose, standet simen/maining wok kondisen, balens wear resistans na kos Ikwipmen: Φ2.4~3.6m simen 'raw meal mills', 'slag mills', 'metal ore ball mills', 'impact crusher inner liners', - raw silotes: Granit, ain ston, 'quarts sand', 'cement clinker', 'aggregate sandstone' Ol gutpela samting: Em i no inap bagarap na strong, em i no inap bagarap long taim bilong hevi, em inap long mekim wok long 'dry & wet grinding', gutpela kos pefomens Ol samting nogut: Em i no gutpela long ol Cr26 lain aninit long ol strongpela 'emery ores' (salt, 'sand sand) na i gat bikpela temperaja Laip bilong sevis: 5~8 yia, 1.5~1.8 taim longpela moa long ol Cr15 lain
4.3 Cr26 Hai Chromium Laina (Hai-End Wear Resistant Gred bilong Hevi Abrasen)
Ol samting we i ken kamap: Bikpela 'abrasive wear', bikpela hat, 'acidic slurry', bikpela-diamita mil, wok i go het wantaim ol strongpela 'raw materials' Ikwipmen: Ol bikpela mineral prosesing bal mil Φ Bikpela o wankain olsem 3.6m, ol 'vertical mill liner', bikpela tempereja -metal mill, sinter chutes, high-corrosion wet grinding equipment Raw Materials: Basalt, high-silicon quartz, hard metal ores, high-temperature clinker, sulfur-containing acidic slurry Advantages: Top wear resistance, superior high{{8}temperature oxidation & alkalision resistance, erosion resistance gutpela 'thermal fatigue' pefomens, i no gat 'rapid groove wear' Ol hevi: Bikpela pe bilong baim pastaim; Inferior long tik-wol hai manganese steel aninit long bikpela impak bilong ol bikpela samting ol i ting bai kamap: 7~10 yia, 2~3 taim longpela moa long Cr15 na 1.4~1.7 taims longpela moa long Cr20 aninit long wankain opereting envairomen
5. Liner Stracture & Key Casting Technology
Molding Proses: Lost foam precision casting o resin sand casting bilong wokim ol weiv lain, step lifting lain, flat lain na end kava lain. Cr26 materiel i gat bikpela 'shrinkage rate', olsem na ol 'mold' i nidim moa 'shrinkage allowance'.
Anti-Cracking Design: Ol lain we i tik moa long 60mm ol i save putim 'molybdenum' na 'vanadium' long en bilong stretim gut 'grain structure'. Ol i save putim ol 'internal chills' long ol bikpela lain bilong abrusim 'carbide segregation' na 'brittleness'.
Instolesen i wankain: Ol hul bilong bolt i stap pinis bilong senisim wanpela hap tasol. Taim yumi skelim wantaim ol 'manganise steel' lain we i gat planti 'manganese', ol 'chromium' lain we i gat bikpela 'chromium' inap long kamap 15%~25% liklik sapos ol i gat wankain 'wear resistance' standet, na dispela i save daunim hevi bilong mil na pawa konsumsen.
6. Kwik Materiel Seleksen Refrens Tebol
表格
| Kondisen bilong wok | Gret yu laikim | Narapela Gret | Nogat rekomendesen |
|---|---|---|---|
| Liklik ston kol mil, wok bilong grisim laimston long sampela taim | Cr15 | Cr20 | Cr26 (I no nidim bikpela pe) |
| Standet simen mil, ain ston na agregeit prodaksen lain | Cr20 | Cr26 (Long-ful ful-kapasiti prodaksen) | Cr15 (Yu mas senisim planti taim) |
| Bikpela mineral prosesing mil, hai-temp klinka, asid wet grinding, hai-silikon hat ston | Cr26 | Cr20 i kamap tik | Cr15 |
| Bikpela 'grinding bin' wantaim bikpela 'ore bulk' na bikpela hevi | Hai Manganese Stiel Laina | Bimetallic Composite High Chromium Liner | Pure Cr15/Cr20/Cr26 (I save bruk long kona) |
| Nomal-temperature drai grinding, liklik baset prodaksen lain | Cr15 | Cr20 | - |
7. Ol toksave bilong operesen na mentenens
Impakt Limitesen: Olgeta tripela gret em ol samting we i no inap bagarap longpela taim. Long ol 'coarse grinding bins' we i gat 'feed bulk size' antap long 100mm, ol i mas putim ol 'high manganese steel' o 'bimetallic composite liners' pastaim long stopim ol 'high chromium liners' long bruk.
Envairomen we i save bagarapim ol samting: Cr26 em i samting we i mas stap insait long 'sulfur-' na 'acidic slurry'; Cr15 i save kisim bagarap long 'pitting corrosion' we i save mekim 'abrasion' i go hariap.
Tempereja Limitesen: Cr26 tasol i save holim gutpela wok aninit long longpela taim wok tempereja antap long 350 digri. Longpela taim sevis bilong hai-temperature i save mekim Cr15 i kamap malumalum long rot bilong tanim, na dispela i save daunim wear loss.
Instalesen na Mentenens: Ol i tambu long weldim na katim ol 'high chromium liners', long wanem, taim ol i weldim long bikpela -temperature, dispela i save kamapim ol bruk. Pulapim ol spes namel long ol lain wantaim ol 'wear-resistant castable taim yu putim long abrusim bagarap bilong ol bolt.
8. Kost & Komprehensif Benefit Samari
Cr15: Invesmen i no bikpela tumas tasol planti taim ol i save pasim wok bilong senisim. Em i gutpela long ol liklik -faktori we i no save wok gut.
Cr20: Gutpela olgeta kos, standet konfigurasen bilong 80% simen plent na ol liklik main.
Cr26: Prais bilong baim samting i go antap wanpela-taim tasol taim bilong senisim samting i go antap tupela taim. I no gat bikpela pe bilong operesen na mentenens bilong ol bikpela prodaksen lain we i wok long go het yet, na dispela i daunim tru ol lus bilong ekonomi we i save kamap taim prodaksen i no wok gut.
