Blast Chamber Wear-Resistant Protection System

Product Overview

The chamber wear parts are the machine's armor. The inner walls of the blasting chamber directly withstand steel shot traveling at more than 80 m/s. Without reliable protection, the chamber's expensive steel plates can quickly be worn through.

In some countries and regions, dust levels are high and the air contains elevated amounts of salt and acidic substances, especially in coastal factories. If the back of a liner plate is not protected against corrosion, it can easily rust and become thinner from the rear, creating the abnormal situation in which the front is not yet worn out but the back has already failed. From material selection to structural design, our chamber protection system is reinforced for tropical coastal operating conditions.

Inventory and Shipping:

Liner plates for the top, sides, ends, and bottom, together with grating plates, sealing strips, observation window assemblies, and other parts, are routinely kept in stock and can be dispatched within 5-7 days. Special curved liner plates and custom-shaped inlet liners can be manufactured from drawings and delivered within 10-15 days.

Material Selection and Wear Resistance: Liner plates are supplied as standard in high-chromium cast iron (over 20% Cr) or rolled Mn13 manganese steel plate. These materials combine high hardness with sufficient toughness to resist impact without chipping or cracking. For customers in coastal areas with heavy salt spray, we offer stainless-steel-edged liner plates or thermal zinc spray treatment on the rear surface to eliminate back-side corrosion. Sealing strips are made from oil-resistant, aging-resistant EPDM rubber, providing twice the service life of ordinary rubber.

Energy-Saving and Service-Life Tips: 

• Establish a liner thickness inspection program. Measure the thinnest point with a caliper every two weeks, and replace the liner when its remaining thickness reaches 30% of the original thickness. Never wait until it is worn through. Once steel shot directly strikes the chamber steel plate, the repair cost can exceed ten times the cost of replacing the liner; 
• Inlet and outlet sealing curtains and strips are critical parts that are easily overlooked. When they age or become damaged, escaping steel shot not only wastes abrasive but can also damage nearby equipment and injure workers. We recommend mandatory replacement every quarter; 
• A protective steel plate must be installed outside the observation window glass. Inspect and replace the protective film during every shift to maintain a clear view and prevent blind operation from causing blast wheel misalignment; 
• If the grating plate at the bottom of the chamber becomes deformed, large foreign objects can enter the screw conveyor and jam the conveying system. Straighten or replace bent grating bars immediately.