1、 Overview of Geogrid Production Line

Geogrid is an important geosynthetic material widely used in engineering fields such as highways, railways, water conservancy, and construction. The geogrid production line usually includes multiple components such as raw material processing system, extrusion system, stretching system, cooling system, cutting system, coiling system, etc. In these systems, due to long-term exposure to harsh working conditions such as high-speed operation, high temperature, and high pressure, many components may experience varying degrees of wear, directly affecting production efficiency and product quality.

2、 Analysis of Main Wear prone Components

1. Wear parts of extrusion system

The extrusion system is the core part of the geogrid production line, mainly including key components such as screws, barrels, molds, etc.

(1) Screw wear

Screw is one of the easily worn components in an extruder. Wear mainly occurs at the top and root of the screw edge, manifested as a decrease in size and blunting of the screw edge. The reasons for wear and tear include:

The abrasion of metal surfaces by fillers (such as calcium carbonate, talc powder, etc.) in raw materials

Corrosion of Metal by Plastic Melt at High Temperature

High speed friction between screw and material

(2) Wear and tear of the barrel

The inner wall of the barrel and the screw work together, but also face serious wear and tear problems. The forms of wear include:

Axial wear: Uneven wear along the length of the barrel

Radial wear: Increased inner diameter leads to increased clearance with the screw

Local wear: particularly severe in the feeding and compression sections

(3) Mold wear and tear

The mold head is a key component that forms the initial shape of the grille, and its flow channel and mold lip are prone to wear:

Mold lip wear leads to uneven product thickness

Channel wear affects the uniformity of melt flow

The wear of the mesh forming area causes changes in the shape of the mesh nodes

2. Wear parts of the stretching system

The stretching system forms a grid structure by longitudinally and transversely stretching the extruded substrate, and its wear-resistant components include:

(1) Stretching roller

Surface coating wear: affecting the surface quality of the substrate

Bearing wear: causing uneven rotation of the roller

Neck wear: affecting the accuracy of tensile tension control

(2) Clamping device

Wear of clamping teeth: causing the substrate to slip or tear

Wear of cylinder piston: affecting the stability of clamping force

Rail wear: causing unstable movement of the clamping device

(3) Chain and sprocket

Wear of chain pin and sleeve: resulting in increased pitch

Wear of sprocket tooth surface: affecting transmission accuracy

Chain elongation: affects the synchronization of stretching

3. Worn parts of the transmission system

(1) Gearbox

Gear wear: pitting and peeling on the tooth surface

Bearing wear: leading to increased vibration and noise

Seal wear: Lubricating oil leakage

(2) Coupling

Wear of elastic components: causing an increase in transmission clearance

Keyway wear: affecting torque transmission efficiency

(3) Belt and pulley

Belt wear: causing slippage and decreased transmission efficiency

Belt pulley groove wear: Accelerating belt wear

4. Wear parts of heating and cooling system

(1) Heating coil

Resistance wire aging: decreased heating efficiency

Insulation layer damage: leading to short circuit risk

(2) Cooling roller

Surface coating wear: affecting cooling effect

Internal waterway scaling: reducing heat exchange efficiency

(3) Cooling fan

Blade wear: reduced airflow

Bearing wear: increased vibration

5. Wear and tear components of auxiliary systems

(1) Cutting device

Tool wear: Irregular incision

Rail wear: Decreased cutting accuracy

(2) Coiling device

Friction plate wear: unstable tension control

Wear of shaft sleeve: uneven winding

(3) Conveyor system

Conveyor belt wear: surface damage

Wear of drum bearings: inflexible rotation

3、 Analysis of factors affecting wear and tear

Material factors: The wear resistance of different materials varies significantly, for example, the lifespan of ordinary carbon steel and wear-resistant alloys may differ by several times.

Process parameters: Improper process parameters such as temperature, pressure, and speed can accelerate wear.

Maintenance: Regular lubrication, cleaning, and adjustment can significantly extend the lifespan of components.

Raw material characteristics: Raw materials with high filler content and impurities will exacerbate wear and tear.

Design factor: Reasonable structural design can reduce local stress concentration and abnormal wear.

4、 Wear prevention and maintenance measures

Selection of wear-resistant materials: Surface treatment (such as hard chromium plating, tungsten carbide spraying) or the use of wear-resistant alloys are applied to parts that are prone to wear.

Optimize process parameters: Control appropriate temperature, pressure, and speed to avoid overload operation.

Regular maintenance and upkeep:

Establish a comprehensive lubrication system

Regularly inspect the wear and tear of key components

Timely replace components that have reached the wear limit

Improved design:

Optimize the structure of easily worn parts

Add wear-resistant lining or replaceable components

Status monitoring:

Vibration Monitoring

temperature monitoring

Regular dimension measurement

The wear and tear of geogrid production line equipment directly affects product quality and production efficiency. By understanding the characteristics and wear mechanisms of vulnerable components in various systems, targeted preventive and maintenance measures can be taken to significantly extend the service life of equipment and reduce production costs. Enterprises should establish a comprehensive equipment maintenance system and develop scientific maintenance plans based on actual situations to ensure stable and efficient operation of production lines.