Grinding roller is as a key component of vertical roller mill, since vertical mill grinds complex material composition,and often contain hard impurities,such as quartz stone,iron,etc., likely to cause serious wear on the grinding rolls of the milling process,to reduce Great Wall Machinery roller wear, developed the market's most advanced grinding roll sets. Roll sleeve mounted on the roller surface, like the roller surface to form a protective film to prevent abrasion of the grinding rolls in the late, you can replace the roller sleeve, to protect the roller purposes.

Second, the product advantages
Great Wall Machinery using the latest production technology, greatly improved wear resistance of the roller shell.
1. Using ZG30Mn, high hardness, good wear resistance;
2. Professional flaw detector testing, quality assurance;
3. rocker arm pulls outer wear, easy maintenance;
4. workmanship, smooth surface, facilitates providing grinding efficiency;
5. High hardness, good crack, Seiko meticulous;
6. castings finishing gown by arc gas, so the appearance of quality steel castings can be protected;
7. Before the factory to stress surface flaw detection inspection, mechanical ability, security and stability operations.

Third, how to replace the grinding roller shell
1. Read the related part drawings roller device, actuator arm, hydraulic schematics, etc;
2. Remove the roller door on the housing;
3. Remove operating cylinder pressure;
4. Remove the pin connecting the boom and arm between;
5. Maintenance tanks with associated pin and rocker, the hydraulic device is placed in maintenance state.
Start the pump motor, the roller pulls the machine, the rear roller device into an upright position once the cylinders corresponding to the two high-pressure pipeline Globe shutoff valve is closed. Remove the fixing roller sleeve bolts and pressure ring, you can remove the roller shell, and then replaced with a new roller sleeve or roller cover upside down, turn with each member should be first cleaned, use feeler after assembly is completed combination of surface conditions. After changing the roller sleeve, you can reverse the steps of the roller device into the discharge roller grinding chamber.

Protection products
The company has two 30-ton electric arc furnace alkaline, four large natural gas heat treatment furnace, water glass sand molding process, castings finishing by arc gouging, so castings appearance quality can be protected form a complete system of casting production base. The main production of single piece 100T following large steel castings, single 30T ingot below.

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