Concasseur à percussion

Utilisé pour le concassage secondaire et la mise en forme. Barres de frappe et blindages d'impact subissent une usure d'impact à haute vitesse ; fonte à haut chrome et composites céramiques selon l'abrasivité de l'alimentation.

Dans un concasseur à percussion, les barres de frappe d'un rotor à haute vitesse frappent l'alimentation. Le matériau percute ensuite les premier, deuxième et éventuellement troisième blindages de tablier, ainsi que d'autres particules. L'usure se concentre dans quatre systèmes principaux.

Identification des pièces et détails techniques

Principaux : barres de frappe, coins/barres d'appui, blindages de tablier, blindages latéraux et protection de rotor ; texte au niveau famille/nom commercial.

Individual parts

Individual and Maintenance Parts

Barre de frappe

Blow Bar

Blow Bar Locking Wedge

Blow Bar Retaining Wedge

Installation Position: Locking slot behind the side of the blow bar
Material Options: Quenched and tempered 42CrMo / 4140 alloy steel or OEM-specified high-strength cast steel
Function: Clamps the blow bar and transfers centrifugal and impact loads

Blow Bar Support Strip

Blow Bar Backing Bar

Installation Position: Between the back of the blow bar and the rotor seat
Material Options: Quenched and tempered alloy steel / high-strength cast steel
Function: Supports the blow bar and maintains the seating surfaces and assembly clearances

Rotor Assemblies

Rotor Assembly

Installation Position: High-speed rotating assembly in the center of the crushing chamber
Material Options: High-strength low-alloy cast steel, welded forged construction or welded structural steel
Function: Carries the blow bars and stores rotational energy

Rotor Protective Liner

Rotor Protection Liner

Installation Position: Exposed surfaces of the rotor discs and blow bar seats
Material Options: Martensitic steel / high-chromium bimetallic material / ceramic composite
Function: Protects the rotor body from fines and rebounding material

Rotor Main Shaft

Rotor Shaft

Installation Position: Passes through the rotor and into the bearing housings on both sides
Material Options: Forged, quenched and tempered 42CrMo / 4140 / 34CrNiMo6 steel
Function: Transmits torque and carries bending, impact and fatigue loads

Rotor Bearing

Installation Position: Inside the bearing housings at both ends of the main shaft
Material Options: 100Cr6 / SAE 52100 bearing steel
Function: Supports the heavily loaded high-speed rotor and controls radial and axial movement

Rotor Bearing Seal

Installation Position: At the bearing housing and projecting main shaft
Material Options: Labyrinth / Taconite arrangement with NBR, HNBR, FKM or V-ring seals
Function: Excludes dust and water while retaining grease

Primary Apron Liner

First Apron Liner

Installation Position: Working surface of the first impact apron on the feed side
Material Options: Manganese steel / martensitic steel / tough composite materials
Function: Handles the first rebound crushing stage with the largest particles and highest impact

Secondary Apron Liner

Second Apron Liner

Installation Position: Second working surface downstream of the first impact apron
Material Options: Martensitic steel / high-chromium white iron / ceramic composite
Function: Provides further crushing and controls particle shape and discharge size

Third Apron Liners

Third Apron Liner

Installation Position: Working surface of the optional third impact apron
Material Options: High-chromium white iron / martensitic steel / ceramic composite
Function: Provides further shaping and crushing of finer particles

Side Liners

Side Liner

Installation Position: Left and right sidewalls of the crushing chamber
Material Options: Manganese steel / martensitic steel / high-chromium or bimetallic material
Function: Protects the frame sidewalls from impact and abrasion

Feed Liners

Feed Liner

Installation Position: Feed opening and upper feed guidance area
Material Options: Grade 400–500 wear plate / manganese steel / rubber-ceramic composite
Function: Absorbs feed impact and protects the inlet casing

Impact Apron Assembly

Installation Position: Adjustable impact aprons above and behind the rotor
Material Options: High-strength cast steel or welded structural steel with replaceable working liners
Function: Supports the impact liners and provides an adjustable crushing gap

Apron Pivot Pin Bushing

Apron Pivot Pin and Bushing

Installation Position: Impact apron pivots and adjustment linkage joints
Material Options: 42CrMo pins with copper-alloy or hardened steel bushings
Function: Provides pivot support under oscillation, impact and boundary lubrication

Bearing Housing

Installation Position: Outside the frame at both ends of the rotor shaft
Material Options: Ductile iron / cast steel / welded steel construction to the OEM design
Function: Locates bearings, seals and lubrication passages while maintaining alignment at both ends

Familles / noms commerciaux de barres de frappe (2026-10-31)

Noms commerciaux acier Mn (OEM-public) : XT510 / HMN / TRON.Mn — indice de sélection, pas une nuance chimique certifiée.
Familles martensitiques / Cr : HMA / HCR ; céramique ou MMC : MMC / TRON.MC+ / CC. Sélection selon mix impact–abrasion–tramp.
Retournement seulement si le texte OEM l'autorise et l'usure est symétrique ; valeurs HB des blindages latéraux ne sont pas une acceptation de barre de frappe.
Lignes catalogue (série/item/part no.) = indices RFQ, pas un tableau de dureté.
Interdiction ferme : pas de chimies d'alliage fixes, points de dureté, specs céramique, WPS générique, tailles de mise au rebut ni durée de vie fixe sur le tableau de paramètres.

Equipment Manufacturers and Series

KinglinkMetsoRUBBLE MASTERHAZEMAG