Materiali obrabnih delov drobilnika
Sedem družin materialov pokriva skoraj vsako uporabo obrabe drobilnikov in mlinov: Mn13, Mn18, Mn22, Mn13Cr2, Jeklo z visoko vsebnostjo mangana Mn18Cr2, železo z visoko vsebnostjo kroma in ogljikovo lito jeklo. Ta stran določa, kaj je posamezna ocena, njegova značilna kemija in trdota, kam sodi in kam ne.
Ocenjujemo
Izberite razred, da vidite njegovo tipično kemijo, trdota, udarna žilavost, ustrezni obrabni deli in aplikacije, za katere jih priporočamo.
Primerjava kakovosti materiala
Najhitrejši način izbire: uskladite oceno z načinom okvare. Deli, ki se zlomijo, potrebujejo trdnost; deli, ki se obrabljajo, potrebujejo trdoto.
| Ocena | Vrsta materiala | Tipična trdota | Udarna žilavost | Odpornost proti obrabi | Najbolj primerna za |
|---|---|---|---|---|---|
| Mn13 | Avstenitno manganovo jeklo | 180 – 230 HB (kot je dobavljeno) | Zelo visoko | Zmerno | Mešana krma z močnim udarcem - čeljustne plošče, kladiva, primarne obloge |
| Mn18 | Avstenitno manganovo jeklo | 200 – 250 HB (kot je dobavljeno) | Zelo visoko | Dobro | Trda abrazivna kamnina z močnim udarcem — stožčaste obloge, čeljustne plošče |
| Mn22 | Avstenitno manganovo jeklo | 190 – 240 HB (kot je dobavljeno) | Najvišje | Dobro | Zelo velike obloge in močan udarec, kjer se je treba izogniti pokanju |
| Mn13Cr2 | S kromom legirano manganovo jeklo | 200 – 250 HB (kot je dobavljeno) | visoko | Dobro | Udarec in odrgnina skupaj — čeljustne plošče zmerne abrazije, mlinske obloge |
| Mn18Cr2 | S kromom legirano manganovo jeklo | 210 – 260 HB (kot je dobavljeno) | Zelo visoko | Zelo dobro | Najboljša vsestranska kakovost za trde abrazivne kamnine — plašči stožcev, čeljustne plošče |
| Železo z visoko vsebnostjo kroma | Martenzitno belo železo (Cr15 / Cr20 / Cr26) | 58 – 65 HRC | Nizka | Izjemno | Delovanje s prevladujočo abrazijo z nizkimi udarci – udarci, kladiva, obloge žleba |
| Ogljik & Nizkolegirano lito jeklo | Liti karbon / nizko legirano jeklo | 150 – 200 HB | Dobro | Nizka | Konstrukcijski ulitki — okvirji, ohišja, nosilci in podstavki |
Referenčni razponi so sestavljeni iz izkušenj standardne uporabe pri primerljivih nalogah drobljenja in mletja. Kemične in mehanske vrednosti so tipični razponi za vsako stopnjo – dejanske vrednosti za vaše naročilo so potrjene na certifikatu mlina in poročilu o pregledu, izdanem za to toploto.
Mn13
Standardno avstenitno manganovo jeklo (Hadfield Steel)
Standardi: ASTM A128 razred A / B · GB/T 5680 ZGMn13-1
Kaj je Mn13?
Mn13 je originalno Hadfieldovo manganovo jeklo in ostaja osnovni razred za obrabljive dele, obremenjene z udarci.. Njegova delovna površina se strdi pod udarci grobo 200 HB do precej čez 450 HB, medtem ko jedro ostane dovolj trdo, da absorbira udarce brez pokanja.
Tipična kemija (masni %)
| Ogljik (C) | 1.05 – 1.45 % |
|---|---|
| Mangan (Mn) | 11.0 – 14.5 % |
| Silicij (in) | 0.30 – 1.00 % |
| fosfor (p) | 0.070 % max |
| Žveplo (S) | 0.040 % max |
Trdota
Tipično 180 – 230 HB, kot je dobavljeno; utrjena površinska plast običajno doseže 450 – 550 HB v uporabi
Udarna žilavost
Običajno visoke – Charpyjeve udarne vrednosti brez zareze 150 J/cm² in več po obdelavi z raztopino
Prednosti
- Odlično utrjevanje ob udarcih
- Zelo visoka žilavost — odporna na razpoke in deformacije
- Nemagneten in dimenzijsko stabilen v uporabi
- Stroškovno učinkovit osnovni razred za udarno obremenitev
Omejitve
- Nizka začetna trdota, zato se hitro obrabi pri drsni drgnjenju z majhnim udarcem
- Slaba izbira za stik med kovino in kovinskimi oblogami
- Težko za strojno obdelavo - običajno se dobavlja v skoraj neto obliki
Primerni obrabni deli
- Čeljustne plošče in lične plošče
- Plašči stožcev in obloge za sklede (primarna in groba faza)
- Giratorne konkave in plašči
- Kladivne glave za udarne drobilnike
- Obloge za kroglični mlin
Tipične aplikacije
Čeljustne plošče, stožčaste in vrtljive obloge, glave kladiva, obloge mlina in drugi deli, ki so izpostavljeni ponavljajočim se močnim udarnim obremenitvam.
Kako uporabljamo to stopnjo
Dobavljeno obdelano z raztopino in utrjeno z vodo, s poročili o trdoti in kemikalijah za vsako toploto. Uporablja se kot standardna izbira, kjer je krma mešana in je udarna obremenitev prevladujoč mehanizem obrabe.
Mn18
Jeklo z visoko vsebnostjo mangana s povečano stabilnostjo avstenita
Standardi: ASTM A128 (družina z visokim Mn) · GB/T 5680 Serija ZGMn18
Kaj je Mn18?
Mn18 poveča vsebnost mangana na približno 17 – 19 %, ki stabilizira avstenitno strukturo in poveča tako žilavost kot hitrost obdelovalnega utrjevanja v primerjavi z Mn13. To je kakovost, ki se najpogosteje uporablja za obloge stožčastih drobilnikov in čeljustne plošče v trdih kamninah.
Tipična kemija (masni %)
| Ogljik (C) | 1.10 – 1.45 % |
|---|---|
| Mangan (Mn) | 17.0 – 19.0 % |
| Silicij (in) | 0.30 – 0.80 % |
| fosfor (p) | 0.070 % max |
| Žveplo (S) | 0.040 % max |
Trdota
Tipično 200 – 250 HB, kot je dobavljeno; običajno utrjena površinska plast 500 – 600 HB v uporabi
Udarna žilavost
Zelo visoko — višje od Mn13, ker je avstenit bolj stabilen
Prednosti
- Višja stopnja utrjevanja kot Mn13, zagotavlja daljšo življenjsko dobo v abrazivni trdi kamnini
- Boljša žilavost, tako manjša nevarnost razpok na velikih delih
- Široko dokazano v granitu, drobljenje bazaltne in trde rude
Omejitve
- Še vedno ni rešitev za čisto drsno obrabo brez udarca
- Višja vsebnost zlitin kot Mn13, torej nekoliko višji strošek
Primerni obrabni deli
- Plašči stožcev in obloge za sklede
- Fiksne in vrtljive čeljustne plošče
- Velika udarna drobilna kladiva
- Giralne obloge
Tipične aplikacije
Plašči stožčastih drobilnikov in obloge sklede, primarne čeljustne plošče v trdi kamnini, velike glave kladiva in krožne obloge.
Kako uporabljamo to stopnjo
Ena najpogosteje dobavljenih vrst. Priporočljivo za dovajanje agregatov in rudnikov, kjer so kamnine trde in abrazivne, in kjer je treba intervale menjave podaljšati brez prehoda na material z večjo vsebnostjo kroma.
Mn22
Jeklo z izjemno visoko vsebnostjo mangana za močne udarce
Standardi: Družina z visoko vsebnostjo Mn po načelih ASTM A128 · GB/T 5680 Serija ZGMn22
Kaj je Mn22?
Mn22 potisne vsebnost mangana na približno 20 – 24 %, daje najstabilnejši avstenit iz družine mangana. Izberemo ga, ko mora ulitek preživeti hude udarce brez razpok – običajno zelo velike obloge, kjer bi razpoka razbila del in ustavila proizvodnjo.
Tipična kemija (masni %)
| Ogljik (C) | 1.00 – 1.40 % |
|---|---|
| Mangan (Mn) | 20.0 – 24.0 % |
| Silicij (in) | 0.30 – 0.80 % |
| fosfor (p) | 0.070 % max |
| Žveplo (S) | 0.040 % max |
Trdota
Tipično 190 – 240 HB, kot je dobavljeno; močan odziv utrjevanja dela v službi
Udarna žilavost
Najvišja stopnja mangana — uporablja se tam, kjer je prednostna odpornost proti razpokam
Prednosti
- Največja žilavost v družini mangana
- Najmanjše tveganje za razpoke pri ulitkih s težkimi preseki
- Good work-hardening when the application delivers sufficient impact energy
Omejitve
- Needs genuine high-impact duty to work-harden — performs poorly in light, low-energy applications
- Highest alloy cost of the manganese grades
Primerni obrabni deli
- Large gyratory concaves and mantles
- Heavy cone liners for the roughest duty
- Primary jaw plates in very hard rock
- Oversize hammer heads
Tipične aplikacije
Very large primary gyratory and cone liners, heavy hammer heads, primary jaw plates in extremely hard rock, parts with high section thickness.
Kako uporabljamo to stopnjo
Selected after reviewing section thickness, impact energy and failure history. Where a customer has previously lost parts to cracking rather than to wear, Mn22 is usually the first grade reviewed.
Mn13Cr2
S kromom legirano manganovo jeklo
Standardi: ASTM A128 Grade C (Cr-bearing) · GB/T 5680 ZGMn13Cr2
What Is Mn13Cr2?
Mn13Cr2 adds roughly 1.5 – 2.5 % chromium to the standard manganese composition. The chromium raises yield strength and wear resistance while keeping the toughness that manganese steel is known for, making it a better all-round choice when impact and abrasion occur together.
Tipična kemija (masni %)
| Ogljik (C) | 1.05 – 1.35 % |
|---|---|
| Mangan (Mn) | 11.0 – 14.0 % |
| Chromium (Cr) | 1.50 – 2.50 % |
| Silicij (in) | 0.30 – 0.80 % |
| fosfor (p) | 0.070 % max |
Trdota
Tipično 200 – 250 HB, kot je dobavljeno, with a work-hardened surface layer in service
Udarna žilavost
High — slightly lower than plain Mn13 but well above high chrome iron
Prednosti
- Better wear resistance than plain Mn13 in the same duty
- Higher yield strength, so less deformation in service
- Retains good toughness for a mixed impact and abrasion duty
Omejitve
- Not suitable where wear is purely low-impact sliding abrasion — high chrome alloy performs better there
- Requires proper solution treatment to develop its properties
Primerni obrabni deli
- Jaw plates for moderate-abrasion feed
- Secondary and tertiary cone liners
- Ball mill liners and lifter bars
- Screen deck and feeder wear plates
- Bucket teeth and cutting edges
Tipične aplikacije
Jaw plates in limestone and mixed feed, cone liners in secondary and tertiary stages, mlinske obloge, screen and feeder wear plates.
Kako uporabljamo to stopnjo
Commonly specified where Mn13 wears out too quickly but the application still carries enough impact that a high chrome grade would be at risk of cracking.
Mn18Cr2
Jeklo z visoko vsebnostjo mangana, legirano s kromom – Premium za obrabo
Standardi: High-Mn Cr-bearing family · GB/T 5680 ZGMn18Cr2
What Is Mn18Cr2?
Mn18Cr2 combines high manganese content with chromium alloying. It is the grade most often specified for cone mantles, bowl liners and jaw plates in hard abrasive rock, because it delivers the best available balance between work hardening, wear resistance and toughness in one material.
Tipična kemija (masni %)
| Ogljik (C) | 1.10 – 1.45 % |
|---|---|
| Mangan (Mn) | 17.0 – 19.0 % |
| Chromium (Cr) | 1.80 – 2.50 % |
| Silicij (in) | 0.30 – 0.80 % |
| fosfor (p) | 0.070 % max |
Trdota
Tipično 210 – 260 HB, kot je dobavljeno; običajno utrjena površinska plast 500 – 600 HB v uporabi
Udarna žilavost
Very high — the most balanced grade for combined impact and abrasion
Prednosti
- Best combination of toughness and wear resistance in the manganese family
- Longer service life than Mn13 or Mn18 in hard abrasive rock
- Proven in granite, basalt and hard ore applications
Omejitve
- Higher alloy content, so a higher cost per kilogram than standard Mn13
- Still offers less pure abrasion resistance than high chrome iron in a no-impact duty
Primerni obrabni deli
- Plašči stožcev in obloge za sklede
- Fiksne in vrtljive čeljustne plošče
- Giratorne konkave in plašči
- Large impact hammers
- Mill liners
Tipične aplikacije
Plašči stožcev in obloge za sklede, jaw plates in granite and basalt, gyratory liners, mill liners in abrasive grinding circuits.
Kako uporabljamo to stopnjo
Widely used as the standard upgrade when a customer needs longer intervals between change-outs in hard rock without accepting the cracking risk of a brittle material.
Železo z visoko vsebnostjo kroma
Martenzitno belo železo — Cr15, Cr20 in Cr26
Standardi: ASTM A532 Class II / Class III (high-chromium white iron)
What Is High Chrome Alloy Iron?
High chrome alloy iron develops hardness of roughly 58 – 65 HRC through a martensitic matrix carrying hard chromium carbides. It offers the highest abrasion resistance of any wear material we cast, but its toughness is much lower than manganese steel, so it is specified for low-impact, abrasion-dominant duty.
Tipična kemija (masni %)
| Ogljik (C) | 2.00 – 3.30 % |
|---|---|
| Chromium (Cr) | 15.0 – 30.0 % (grade dependent) |
| Molybdenum (Mo) | Up to 1.50 % (where specified) |
| Nickel (Ni) | Up to 2.50 % (where specified) |
| Mangan (Mn) | 2.00 % max |
| Silicij (in) | 1.00 % max |
Trdota
Tipično 58 – 65 HRC, with hardness retention generally maintained up to about 350 – 450 °C
Udarna žilavost
Low compared with manganese steel — not suitable for heavy impact or large unbroken tramp metal
Prednosti
- Highest abrasion resistance of the grades we cast
- Hardness retained at elevated temperature, unlike manganese steel
- Excellent where the material flow is abrasive and impact is limited
Omejitve
- Brittle — will crack or break under heavy impact or tramp metal
- Not readily weldable in the field
- Poor choice for primary crushing of large hard rock
Primerni obrabni deli
- Impact crusher blow bars
- Impact plates and breaker plates
- Hammer heads for limestone and clinker
- Pulveriser rolls and grinding rings
- Chute, hopper and bin liners
- Wear plates and grate bars
Tipične aplikacije
Blow bars, impact plates, hammer heads for limestone and cement, pulveriser rolls and rings, chute and hopper liners, wear plates.
Kako uporabljamo to stopnjo
Grade is chosen against the feed rather than the crusher model: Cr26 for limestone and clinker where abrasion dominates, Cr20 where some impact is present, and a tougher manganese or alloy steel grade is recommended instead when the feed carries uncontrolled tramp metal.
Ogljikovo jeklo & Nizkolegirano lito jeklo
Strukturni ulitki in podporne komponente
Standardi: ASTM A27 / A148 · GB/T 11352 (ZG230-450, ZG270-500 families)
What Is Carbon Steel & Nizkolegirano lito jeklo?
Carbon and low-alloy cast steels are used for structural and support components rather than for the wear surface itself. They provide the toughness, weldability and dimensional stability needed for housings, frames, brackets and bases that carry the wear parts.
Tipična kemija (masni %)
| Ogljik (C) | 0.20 – 0.50 % |
|---|---|
| Silicij (in) | 0.20 – 0.60 % |
| Mangan (Mn) | 0.50 – 1.20 % |
| fosfor (p) | 0.040 % max |
| Žveplo (S) | 0.040 % max |
Trdota
Tipično 150 – 200 HB depending on grade and heat treatment
Udarna žilavost
Good — ductile and readily weldable
Prednosti
- Good toughness and weldability
- Stable dimensions for machined fits and mounting surfaces
- Cost-effective for large structural components
Omejitve
- Not a wear material — low abrasion resistance
- Requires a wear liner or hardfacing where abrasion is present
Primerni obrabni deli
- Crusher frames and housings
- Bearing housings and supports
- Brackets, bases and mounting plates
- Machine guards and covers
Tipične aplikacije
Crusher frames and housings, bearing housings, brackets, bases, guards, girth gear covers and non-wear structural castings.
Kako uporabljamo to stopnjo
Cast, heat treated and machined to drawing, with mounting faces and bolt patterns held to the tolerances required for fitment. Supplied alongside wear parts so that a complete assembly can be sourced from one foundry.
How to Choose a Material Grade
Material selection follows the failure mode, not the hardness number. These are the decisions we apply when reviewing a wear part application.
If: The part fails by cracking or breaking, not by wearing out
Then: Move to a tougher grade — Mn18, Mn22 or a manganese grade in place of high chrome iron. Selecting a harder material makes this failure mode worse, not better.
If: The part wears out quickly but the feed delivers strong impact
Then: Stay within the manganese family and raise the grade — Mn13 to Mn18, or Mn13Cr2 to Mn18Cr2. High chrome iron is not suitable where impact energy is high.
If: The part wears out quickly in a low-impact, abrasion-dominant duty
Then: Move to high chrome alloy iron (Cr15 to Cr26). Manganese steel cannot work-harden without impact, so its low initial hardness becomes the limiting factor.
If: The wear part operates at elevated temperature
Then: High chrome alloy iron retains hardness generally up to about 350 – 450 °C. Manganese steel loses its work-hardening advantage as temperature rises, so grade selection has to follow the operating temperature.
If: Wear is uneven across a set of parts, such as a mantle wearing faster than the bowl liner
Then: Check chamber geometry, closed side setting and feed distribution before changing material. Uneven wear is normally a geometry or feed problem rather than a material problem.
If: A very large or heavy-section casting relies on work hardening
Then: Confirm the application actually delivers enough impact energy. Very heavy parts in low-impact duty do not work-harden, and a different grade would serve better.
Quality of the Material You Receive
ISO 9001 certified. Every heat is analysed by spectrometer before pouring, and the chemical composition report issued with your shipment states the actual values for that heat — not a catalogue range.
Not Sure Which Grade Fits Your Application?
Send us the part, the crusher model and the feed material. We will recommend a grade with the chemistry, hardness and price for your duty.
Povezane tehnične informacije
Obrabni deli so izbrani glede na material, podatkov o aplikaciji in kakovosti skupaj. Te strani pokrivajo vsak del te odločitve.
Izdelki
Crusher wear parts by equipment type — jaw, stožec, impact, hammer, grinding mill and custom castings.
Preberi več →Aplikacije
Kako so obrabni deli izbrani za rudarjenje, kamnolom, agregat, cement, premog, dajatev za recikliranje in zemeljska dela.
Preberi več →Proizvodnja
Devet nadzorovanih proizvodnih korakov od izdelave vzorca do končnega pakiranja, in zakaj je vsak korak nadzorovan.
Preberi več →Kakovost
Pregled surovin, kemična analiza, trdoto in mehansko testiranje, dimenzijski pregled in sledljivost.
Preberi več →Študije primerov
Profili uporabe, ki prikazujejo, kako sta izbira kakovosti in profila spremenila življenjsko dobo obrabe pri resničnih nalogah drobljenja.
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