Casting Vertical Mill High Chromium Grinding Roller Sleeve High Wear Resistance

Casting High Wear Resistance Long Life Vertical Mill High Chromium Grinding Roller Sleeve

Description

Vertical mill is an ideal large-scale grinding equipment widely used in industries such as cement, electricity, metallurgy, chemical industry, non-metallic minerals, etc. It integrates crushing, drying, grinding, and grading transportation, with high production efficiency. It can grind block, granular, and powder raw materials into the required powder materials.

Vertical mill production uses a large number of accessories, including wear-resistant and vulnerable parts. The roller sleeve and lining plate of the vertical mill will wear out during use, and the roller sleeve and lining plate need to be replaced according to the situation every certain production cycle.

Product advantages
Years of experience in vertical grinding equipment processing and manufacturing, as well as in the construction of grinding equipment production lines, have enabled Hefei Hengcheng to have mature process technology in rocker arm casting, and the rocker arm shows more advantages compared to peers:
1. Good wear resistance and less prone to breakage;
2. The use of arc gouging and shot blasting treatment ensures the appearance quality;
3. Secondary flaw detection to ensure quality.
Before leaving the factory, the company's professional inspectors will conduct several non-destructive inspections on the force bearing surface of the rocker arm to avoid defective products leaving the factory.

The main function of vertical grinding roller sleeve
As a key component of a vertical mill, the grinding roller often contains some hard impurities such as quartz and iron blocks due to the complex composition of the material being ground. During the long-term grinding process, it is easy to cause serious wear on the grinding roller, causing the gap between the grinding roller and the grinding disc to continuously increase, leading to a decrease in equipment operation efficiency and an increase in energy consumption, thereby reducing production efficiency and increasing production costs.

So how to reduce the wear of grinding rollers, thereby improving production efficiency and reducing enterprise costs? After years of research and exploration, Hefei Hengcheng has developed and produced advanced, wear-resistant, long-lived, and reliable grinding roller sleeves in the current market. The grinding roller sleeve is made of high chromium material and cast, which effectively solves the technical problem of easy wear of vertical grinding rollers.

To replace the roller sleeve or bearing of the vertical mill, follow the following steps:
1. Read the drawings of the grinding roller device, transmission arm, hydraulic schematic, and other related components.
2. Remove the grinding roller door from the upper shell.
3. Remove the pressure from the working cylinder.
4. Remove the connecting pin between the boom and rocker arm.
5. Connect the maintenance oil cylinder with a pin and the rocker arm, and place the hydraulic device in the maintenance state.

Start the hydraulic pump motor, flip the grinding roller out of the machine, place the grinding roller device in a vertical position, and immediately close the two ball stop valves on the high-pressure pipeline corresponding to the oil cylinder. Remove the bolts and pressure rings that fix the roller sleeve to remove it, then replace it with a new roller sleeve or flip the roller sleeve over. When transferring, clean all parts first, and after assembly, use a feeler gauge to check the condition of the joint surface. After the roller sleeve is replaced, the grinding roller device can be fed into the grinding chamber according to the opposite steps of unloading the grinding roller. If replacing the bearings, the entire grinding roller assembly must be taken out of the rocker arm and sent to the machine repair workshop for repair.