Scrap Barrel Shredder Iron Barrel Shredder For Metal Recycling Plant Scrap Metal Shredder Pre Shredder

Working principle of barrel shredder
The core principle of barrel shredder is to achieve material crushing through the shearing, tearing and extrusion of the cutter. The specific process is as follows:

1. The drive system drives the knife shaft to rotate: the equipment is driven by the motor through the reducer to drive two (or more) parallel knife shafts to rotate in opposite directions (the speed is usually 50-200r/min, adjusted according to the thickness of the barrel).
2. Material enters the crushing chamber: The waste iron barrel enters the crushing chamber between the knife shafts through the feed port (manually or by conveyor belt).
3. Knife shearing and tearing: The knife shaft is equipped with staggered shredders (distributed in spiral or block shape), and the knife edges are sharp and hard. When the iron barrel contacts the knife, it is "bitten" and forcibly dragged by the rotating knife. Through staggered shearing, edge tearing and knife shaft extrusion between the knives, the iron barrel is gradually broken from the whole into irregular small pieces (usually 5-50mm in size, which can be controlled by adjusting the knife gap).
4. Discharging and screening: The broken iron barrel fragments are discharged through the screen (or discharge port) below the knife shaft. If the fragment size does not meet the requirements (too large), it will be intercepted by the screen and returned to the crushing chamber to be shredded again until it reaches the preset size.

Advantages of shredder knives:
The shredder knives are the core components of the iron barrel shredder. Their performance directly affects the crushing efficiency and equipment life. The main advantages are as follows:

The material is wear-resistant and has high hardness: It is usually made of **high-alloy tool steel** (such as Cr12MoV, D2, SKD11, etc.) after forging and quenching. The hardness can reach HRC58-62, which can withstand the high-intensity impact and friction of the iron barrel metal and is not easy to break or wear.
Strong adaptability of structural design: The knives are mostly "claw-shaped" or "rectangular blade" designs, and the blade angles are optimized (usually 30°-45°), which can not only quickly bite the edge of the iron barrel, but also avoid jamming through staggered shearing (especially suitable for processing deformed and convex iron barrels).
Long service life and low maintenance cost: The knives adopt a modular design. A single knife can be replaced separately after wear (no need to replace the knife shaft as a whole), and the wear resistance is enhanced through surface carburizing, nitriding and other processes. After a single replacement, 10-30 tons of iron barrels can be processed (depending on the thickness of the iron barrel).
High safety and wide adaptability: The knife and the knife shaft are firmly connected, and can handle iron barrels with a thickness of 0.3-3mm (including industrial barrels with reinforcement ribs). It is also highly compatible with iron barrels with slight rust and paint residues, and is not easily stuck by impurities.

Product parameters: