Grinding table for vertical roller mill

One-stop service covering design, process and manufacture

Processing weight: 20-50T

Applicable industries: cement, building materials, power, metallurgy, etc.

Main Materials: ZG30Mn

Size: customization

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As a professional manufacturer of vertical mill parts, we know the crucial role of grinding discs in vertical roller mills. The grinding table not only determines the grinding efficiency and fineness of cement products but also directly affects the equipment’s operational stability and maintenance costs. The grinding tables we provide are made of high-quality wear-resistant materials and undergo precision machining and strict quality testing to ensure durability and excellent performance, bringing you a more efficient and stable grinding solution for your production.

Our vertical mill grinding tables are widely used for:

Cement industry: clinker grinding, slag grinding, composite cement production
Mineral powder production: preparation of blast furnace slag micro powder in the steel industry
Coal powder preparation: coal powder grinding in coal-fired power plants and metallurgical industries
Non metallic mineral processing: ultrafine grinding of limestone, quartz sand, barite and other minerals

High wear-resistant material

We use high-end wear-resistant materials such as high chromium alloy cast iron, Ni Hard wear-resistant materials, or overlay composite materials to give the grinding disc extremely strong impact resistance and wear resistance.

Precision casting, precise size

Our grinding disc adopts advanced casting and precision machining technology, with precise dimensions to ensure a tight fit with the grinding roller, optimize grinding efficiency, and effectively reduce vibration and energy loss caused by size errors.

Optimize design to improve grinding efficiency

Our grinding disc can effectively enhance the material crushing ability, promote uniform grinding, increase the specific surface area of cement, and ensure a higher quality distribution of finished cement particles.

Longer service life

In high load operating environments, the service life of our grinding disc is extended by 30% -50% compared to ordinary grinding discs, reducing replacement frequency and improving equipment operation time.

Manufacturing process of grinding table

1. Design and material selection

Requirement analysis: Determine suitable materials and specifications based on the vertical mill model, working environment, and grinding materials (clinker, slag, coal powder, etc.) provided by the customer.
CAD/CAE design: Using computer-aided design (CAD) and finite element analysis (CAE) to optimize the structure of the grinding disc, ensuring uniform force distribution, reasonable distribution of wear-resistant layer, and avoiding cracking or deformation caused by stress concentration.
Material selection plan: According to different working conditions, high chromium alloy cast iron, Ni Hard wear-resistant steel, or overlay composite materials are selected to ensure that the grinding disc has both high hardness and resistance to impact fatigue.

2. Mold manufacturing and molding process

Mold making: Precision casting is carried out using wooden molds, resin sand molds, or metal molds to ensure accurate casting dimensions.
Molding and Core Making: Using resin sand casting technology, the grinding disc castings have better surface quality and dimensional accuracy, while reducing casting defects.

3. Melting and pouring

Raw material melting: Using a medium frequency induction furnace for alloy melting, strictly controlling the proportion of alloy elements (Cr, Ni, Mo, Mn, etc.) to ensure that the material has high wear resistance and excellent mechanical properties.
Refining treatment: Using furnace refining (LF)+vacuum degassing (VD) technology to remove impurities and improve the purity of the alloy.
Pouring process: Adopting directional solidification technology to optimize casting structure, reduce casting defects such as porosity, slag inclusion, shrinkage, etc., and improve casting density and wear resistance.
Cooling control: Reasonably control the cooling rate to avoid excessive internal stress causing cracks, while optimizing the organizational structure to improve the impact resistance of the grinding disc.

4. Heat treatment process

Adopting high-temperature quenching (980-1100 ℃) to form martensitic structure and increase hardness (HRC 55-65) of the material;
Perform tempering treatment (250-500 ℃) to eliminate quenching stress, improve toughness, and prevent cracking and peeling.
In the wear area, welding is carried out using high wear-resistant alloy layers (such as Cr, Mo, V alloys), with a hardness of HRC 60+and an extended service life of more than 50%.

5. Precision machining and dynamic balance correction

Rough machining: CNC lathe is used for rough machining to remove excess materials and ensure the basic size of the grinding disc.
Precision machining: High precision CNC equipment (gantry milling, CNC grinding machine, etc.) is used to ensure the surface smoothness and concentricity of the grinding disc, and to ensure precise matching with the grinding roller.
Using a dynamic balance tester, detect and adjust the center of gravity of the grinding disc to reduce vibration and uneven wear during operation, ensuring smooth operation of the vertical mill.

6. Quality inspection (strictly control every step)

In order to ensure that the quality of the grinding disc meets international standards, we use a series of non-destructive testing and physical and chemical analysis methods.

7. Rust prevention treatment and packaging for shipment

Rust proof spraying: Spray rust proof coating on non working surfaces to prevent rusting during transportation and storage.
Packaging: Fixed with reinforced wooden boxes or steel frames to ensure no damage during long-distance transportation.
Logistics delivery: Supports global shipping and can provide expedited services according to customer needs.

why choose us?

cost

We use the optimal alloy formula and processing technology to extend the lifespan of the grinding disc, reduce downtime and replacement costs.

customization

We can provide precise matching replacement grinding discs for domestic vertical mills such as CITIC Heavy Industry and Hefei Institute of Vertical Grinding, ensuring stable operation.

technology

From raw material procurement to finished product testing, we strictly implement the ISO 9001 quality management system to ensure that every grinding disc meets international standards, with a uniform wear-resistant layer, high surface smoothness, and defect free casting.

service

We have strong production capacity and inventory system, which can quickly respond to your needs and reduce waiting time. At the same time, we provide professional technical support to help you optimize equipment maintenance plans and improve production efficiency.

FAQ

1.Can your grinding table be compatible with my vertical roller mill?

We support customizing various brands and models of vertical grinding discs to ensure precise matching.
What are the advantages of your grinding disc compared to regular grinding discs?
We use high wear-resistant materials, optimize the design, extend the service life by 30% -50%, and reduce maintenance costs.

2. What are the advantages of your grinding disc compared to regular grinding discs?

We use high wear-resistant materials, optimize the design, extend the service life by 30% -50%, and reduce maintenance costs.

3. How long is the delivery cycle?

General standard specifications can be delivered within 2-4 weeks, and special customized orders can be negotiated for expedited delivery

4. Do you provide installation guidance?

We can provide online technical support or dispatch engineers to guide installation on-site.