1. Saray Manunan Estandarte tan Grado (GB/T 8263 Abrasion Resistant White Cast Iron)
Kaslakan ya mipara iran grado parad saray industrial liners:
Cr15 → KmTBCr15Mo (15% chromium molybdenum high chromium cast iron)
Cr20 → KmTBCr20Mo (20% chromium molybdenum high chromium cast iron)
Cr26 → KmTBCr26 (26% ya atagey ya chromium cast iron, abeba odino anggapoy molybdenum)
Standard Chemical Composition (Mass Fraction)
表格
| Grado na Materyal | Cr | C | Mo | Si | Mn | Impurities P/S | Cr/C Ratio |
|---|---|---|---|---|---|---|---|
| Cr15 | 14.0~18.0% | 2.8~3.4% | 0.4~0.8% | 0.4~1.0% | 0.5~1.2% | Mas abeba odino mipara ed 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% | Mas abeba odino mipara ed 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% | Mas abeba odino mipara ed 0.04% | 6~8 |
Manunan prinsipyo: Say mas atagey ya chromium content et mamawala na mas dakel ya M₇C₃ chromium carbide hard phases. Say Cr/C ratio ya walad baetan na 4 tan 8 et mamaseguro na parepareho tan tuloytuloy ya panagbunog na carbide, ya manbabalanse ed resistensya tan inkapekder.
2. Panangikompara ed Istruktura na Metalografiya tan Mekanikal a Kablian
Amin na taloran materyales et tugyopen na tempered martensite, M₇C3 hard carbides tan minor retained austenite. Say microhardness na carbides et onsabi ed HV1800~2200, ya manseserbin manunan wear-resistant skeleton.
Saray Performance Parameters Kayari na Standard Heat Treatment
表格
| Performance Index | Cr15 Liner | Cr20 Liner | Cr26 Liner |
|---|---|---|---|
| Rockwell Hardness HRC | 58~61 | 59~62 | 60~65 |
| Impact Toughness k (J/cm2) | Mas baleg nen say 7 | Mas baleg nen say 8 | Mas baleg nen say 8.5 |
| M₇C₃ Carbide Volume Fraction | 22%~28% | 28%~35% | 35%~45% |
| Relative Wear Service Life (Benchmark) | 100% (Reference) | 140%~180% | 220%~300% |
| Ag-onkupas tan Ag-onkupas | Aberids | Maong | Sankaabigan |
| Maximum Thermal Fatigue Operating Temp | Mas abeba o mipara ed 300 degree | Mas abeba o mipara ed 350 degree | Mas abeba o mipara ed 400 degree |
Saray pandumaan ed lohika na panggawa
Cr15: Sankaabebaan ya chromium ya walaan na sankaabebaan ya carbides. Mas abeba so inka-tough to balet say sankaabebaan ya gastos ed raw material. Maong parad abeban -abrasion ya kondisyon na trabaho ya walay prayuridad ed gastos.
Cr20: Balanse so lebel na chromium ya walay sankaabigan ya trade-off ed baetan na wear resistance, inkapekder tan gastos. Say manunan liner material ya malaknab ya uusaren ed industriya na semento tan panagmina.
Cr26: Say atagey ya chromium content et mamaaligwas ed proporsyon na carbide, ya mangiter na sankatageyan ya hardness, resistensya ed panag-usar, atagey-resisti ed temperatura tan resistensya ed erosion na acid-alkali. Say makapuy labat et mas atagey so gastos ed raw material.
3. Standard Heat Treatment Process (importante ed serbisyo)
Say kompleton panag-quenching tan panag-tempering et kaukolan parad saray high chromium liners. As-cast liners et onsabi labat ed HRC40~46, ya say wear resistance et kulang ed 60% na saray kualipikadon heat-e-treated ya produkto.
Cr15 (KmTBCr15Mo) Quenching: Pansiansiaen ed 940~980℃ed loob na 2~4 oras, palemewen na dedikadon quenchant; Tempering: Abeban-temperatura ed 220~280℃ed loob na 3~6 oras pian naekal so internal stress; Pinal ya inka-malet HRC Mas baleg nen say 59.
Cr20 (KmTBCr20Mo) Quenching: Pansiansiaen ed 980~1030℃ed loob na 2~5 oras; Tempering: Abeban-temperatura ed 230~290℃; Say sankaabigan ya inka-malet HRC60~62.
Cr26 (KmTBCr26) Quenching: I-hold ed 1010~1060℃ed loob na 3~6 oras pian natunaw so secondary carbides; Tempering: Pansiansiaen ed 250~300℃ed loob na 4~8 oras; Malet ya inka-malet ed tagey na HRC62. Say temperatura na panag-tempering et nayarin itagey na daiset parad saray senaryo na serbisyo ya atagey-ya temperatura pian napaaligwas so thermal stability.
Saray Bawal ed Proseso: Say natural ya air cooling quenching tan tempering ed tagey na 400℃et malet ya isesebel, ya mamawas na baleg ed inka-awet tan resistensya na abrasion.
4. Saray Kondisyon ed Pantratrabaho, Kagawaan tan Materyales parad Kada Grado na Liner
4.1 Cr15 High Chromium Liner (Economical Grade)
Saray nausar ya senaryo: abeban abrasion, melag-diametro na ball mills, malambot iran hilaw, ag-ontutundan produksyon Kagawaan: Melag iran ball mills Φ Mas abeba odino mipara ed 2.4m, coal mills, melag iran pinon sand crusher, abeban-erosion chutes Raw Materials: Carbon, limest, shale, tan arum nira medium-low hardness ores Advantages: Sankaabebaan ya gastos ed panagsaliw, magaan, abeban gastos ed pansalat Disbentaha: Antikey so bilay na serbisyo ed silong na high-hardness ore tan tuloytuloy ya full-load operation; Aliwan matukoy parad basaan ya panaggiling ya uusaren so acidic slurry Iilaloan ya Bilay na Serbisyo: 3~5 taon, mipara labat ed 60%~70% ya bilay na serbisyo na Cr20 liners diad parehon kondisyon
4.2 Cr20 High Chromium Liner (Universal Mainstream Grade, Sankatageyan ya Market Share)
Saray Nausar ya Scenario: Medium abrasion, dry & wet dual-purpose, standard cement/mining working conditions, balanced wear resistance & cost Equipment: Φ2.4~3.6m cement raw meal mills, slag mills, metal ore ball mills, impact crusher inner liners, - Raws: Granite, iron ore, quartz sand, cement clinker, aggregate sandstone Bentaha: Balanse so resistensya ed panag-usar tan inka-tough, resistensya ed medium impact, mipara ed dry & wet grinding, sankaabigan ya gastos. Iilaloan ya Bilay na Serbisyo: 5~8 taon, 1.5~1.8 beses ya mas andukey nen saray Cr15 liners
4.3 Cr26 High Chromium Liner (High-End Wear Resistant Grade for Heavy Abrasion)
Saray Nausar ya Senaryo: Graben abrasive wear, atagey a temperatura, acidic slurry, angkakabaleg-diameter ya gilingan, tuloytuloy ya produksyon ya walaan na atagey-hardness ya raw materials Kagawaan: Angkakabaleg iran mineral processing ball mills Φ Mas baleg nen say 3.6m odino mipara ed 3.6m, vertical mill liners, atagey -clurry clurry 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, superyor high{{8}pemperatura oxidation & erosion resistance, alkalid resistance ekselentin thermal fatigue performance, anggapoy maples ya groove wear Disbentaha: Atagey so gastos ed pansaliw; Mas abeba nen say makapal a padir ya atagey a manganese steel diad silong na ambelat ya epekto na angkakabaleg iran bulk materials.
5. Liner Structure & Key Casting Technology
Proseso na Panmoldi: Naandi so foam precision casting odino resin sand casting parad pankakasakey na panagporma na wave liners, stepped lifting liners, flat liners tan end cover liners. Say Cr26 ya materyal et mas baleg so shrinkage rate to, kanian saray molde et mankaukolan na ekstran shrinkage allowance.
Anti-Cracking Design: Saray liner ya mas makapal nen say 60mm et in-alloy na molybdenum tan vanadium pian napino so istruktura na bukel. Saray internal chills et iiyan ed angkakabaleg iran liner pian napaliisan so carbide segregation tan brittleness.
Instalation Matching: Pre-reserved bolt holes for single-piece replacement. No ikompara ed saray high manganese steel liners, saray high chromium liners et nayarin 15%~25% ya mas manipis no pareho so estandarte na wear resistance, ya mamawas ed karga na gilingan tan konsumo na kuryente.
6. Maples ya Panagpili na Materyal Reference Table
表格
| Kondisyon na Pantratrabaho | Mas labay ya Grado | Alternatibon Grado | Ag-irerekomenda |
|---|---|---|---|
| Melag a gilingan na karbon, ag-ontutundan panaggiling na apog | Cr15 | Cr20 | Cr26 (Ag nakaukolan ya atagey a gastos) |
| Standard cement mill, iron ore & aggregate production line | Cr20 | Cr26 (Long-term full-capacity production) | Cr15 (Kaukolan so mabetbet a pansalat) |
| Baleg ya mineral processing mill, atagey-temp na clinker, acidic wet grinding, atagey-silicon hard rock | Cr26 | Pinakapal ya Cr20 | Cr15 |
| Magaspang a panaggilingan a walaan na baleg a ore bulk tan ambelat ya epekto | High Manganese Steel Liner | Bimetallic Composite High Chromium Liner | Puron Cr15/Cr20/Cr26 (Masyadon onkupas ed suyok) |
| Normal-temperatura ya dry grinding, limitado so budget production line | Cr15 | Cr20 | - |
7. Saray Nota ed Operasyon tan Panmintina
Limitasyon ed Epekto: Amin na taloran grado et medium-low impact wear-resistant materials. Parad saray magaspang ya gilingan ya walay feed bulk size ya masulok ya 100mm, saray high manganese steel odino bimetallic composite liners so prayuridad pian ag-onkupas iray high chromium liners.
Makaderal ya Kaliberliber: Say Cr26 et kaukolan parad sulfur- ya walaan na asidon slurry; Say Cr15 et mansasakit na pitting corrosion ya mamapeles na abrasion.
Limitasyon na Temperatura: Say Cr26 labat so makapansiansia na malet ya performance ed silong na andukey a panaon ya temperaturan mankikimey ya onsulok ed 350 degree. Say andukey a panaon ya serbisyo ed atagey a temperatura et mamalemew ed Cr15 panamegley na panag-tempering, ya mandodoble ed inkaandi na uusaren.
Instalasyon tan Panmintina: Say panag-welding tan panag-cut na high chromium liners et sebel, ta say atagey a temperatura na welding et mamawala na bitak. Panoen iray kulang ed baetan na saray liner na wear-resistant castable legan na pangi-install pian napaliisan so pakaderal na materyales ed saray bolts.
8. Sumaryo na Gastos tan Benepisyo
Cr15: Sankaabebaan ya upfront investment balet mabetbet ya onsara parad pansalat. Matukoy parad melag iran pabrika ya walaan na abeban panaon na pakaandi.
Cr20: Sankaabigan ya komprehensibon gastos, estandarten konpigurasyon parad 80% ya planta na semento tan medium-melag iran minas.
Cr26: Mas atagey so sakey-beses ya presyo na pansaliw balet ta doble so siklo na pansalat. Minimal ya gastos ed operasyon tan panmintina na angkakabaleg iran tuloytuloy ya linya na produksyon, ya mamawala na baleg ya pakalukpos ed ekonomya lapud ag-inkayadyari na produksyon.
