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Automatic Method Type Coating Production Line for Carbon Steel Parts Professional Liquid Paint Line

Automatic Method Type Coating Production Line for Carbon Steel Parts Professional Liquid Paint Line

Brand Name:	CHG
Model Number:	AC-04
MOQ:	1 set
Price:	100,000-300,000 USD
Payment Terms:	D/P,T/T,D/A,L/C
Supply Ability:	10 sets per year

Detail Information

Product Description

Detail Information

Place of Origin:

China

Certification:

CE, ISO

Coating:

Painting

Substrate:

Steel

Mini Order Qty:

1 Set

Categories:

Coating Production Line

Control Unit:

PLC

Transport Package:

Customized

Supply Ability:

10/Year

Packaging Details:

Varies depending on the design

Highlight:

Automatic coating production line carbon steel

Liquid paint line carbon steel parts

Professional liquid painting line automatic

Product Description

Automatic Liquid Dip Coating Line for Heavy Carbon Steel Structural Parts

Customized Industrial Painting System with Power and Free Conveyor

CHG provides custom-engineered liquid dip coating production lines for carbon steel structural components, combining controlled immersion coating, overhead material handling, extended drip-off time, and thermal drying into an integrated production system.

This line features a 45° angled dipping station and a Power and Free conveyor, allowing heavy workpieces to move between different processing stages while accommodating the residence times required for immersion coating, paint drainage, and drying.

The system is designed for structural steel components weighing up to 2,000 kg per carrier, with forklift-assisted manual loading and unloading. Its conveyor speed is adjustable from 0.5 to 3.0 m/min, providing flexibility for different operating conditions.

The equipment arrangement, dipping tank dimensions, carrier design, and production layout can be customized according to the customer's workpieces and coating requirements.

Main Equipment and Technical Configuration

Parameter	Specification
Coating Method	Liquid immersion / dip coating
Workpiece Material	Carbon steel
Dipping Arrangement	45° angled dipping
Conveyor Type	Power and Free overhead conveyor
Maximum Carrier Load	2,000 kg
Conveyor Speed	Adjustable, 0.5–3.0 m/min
Loading Method	Manual, forklift-assisted
Unloading Method	Manual, forklift-assisted
Immersion Time	6 minutes
Drip-Off Time	90 minutes
Drying Time	48 minutes
Drying Temperature	60–80°C
Cooling Time	6 minutes
Dipping Tank Dimensions	Customized
Equipment Layout	Project-specific engineering

The operating parameters above describe this production line configuration. For other projects, coating time, drying conditions, conveyor capacity, and equipment dimensions are determined according to the actual products and coating materials.

45° Angled Immersion Coating System

The dipping section is designed to immerse carbon steel structural components into the liquid coating material at a 45-degree angle.

This arrangement can be useful for products with complex structural features, including welded assemblies, internal corners, and interconnected steel sections.

The angled dipping mechanism is engineered according to the workpiece dimensions, hanging arrangement, center of gravity, and coating requirements.

How the Immersion Process Works

During operation, the workpieces are transported to the dipping station by the overhead conveyor.

The dipping equipment positions the suspended components for immersion into the coating tank.

The workpieces remain immersed for the specified processing period before being withdrawn and transferred to the drip-off section.

For this line, the designed immersion duration is 6 minutes.

The dipping tank and associated mechanisms are configured according to the required workpiece envelope, coating liquid characteristics, and production capacity.

Advantages of Immersion Application

Compared with conventional spray application, immersion coating can provide access to surfaces that may be difficult to reach with spray guns.

Potential advantages include:

Coating of complicated structural geometries
Application to recessed and partially enclosed surfaces
Reduced dependence on manual spray gun positioning
Repeatable immersion sequences
Integration with automated workpiece transportation
Suitability for selected heavy fabricated steel products

Actual coating coverage and film uniformity depend on component geometry, drainage characteristics, paint formulation, immersion conditions, and process control.

Power and Free Conveyor for Heavy-Duty Workpieces

The production line uses a Power and Free overhead conveyor to transport components between loading, dipping, drip-off, drying, cooling, and unloading stations.

Unlike a conventional continuously driven conveyor, a Power and Free system allows carriers to stop, accumulate, and resume movement at designated positions.

This functionality is particularly useful for liquid dip coating processes where different stages require significantly different processing times.

Independent Carrier Movement

The conveyor incorporates separate power and free tracks.

Individual carriers can be engaged or disengaged from the driving mechanism, allowing controlled movement through the production line.

Depending on the track layout and control arrangement, the system can support:

Carrier accumulation
Controlled stopping at processing stations
Sequential carrier release
Coordination of immersion operations
Extended residence time in designated areas
Flexible movement between production stages

Heavy-Duty Carrier Design

The specified maximum carrying capacity is 2,000 kg per carrier.

Carriers and hangers are designed according to the workpiece weight, dimensions, center of gravity, and suspension requirements.

For heavy structural components, proper load distribution and stable workpiece positioning are important considerations throughout transportation and immersion.

Adjustable Conveyor Speed

The conveyor operating speed can be adjusted within the specified range of 0.5–3.0 m/min.

This provides flexibility for material movement between different sections.

Actual production throughput depends on carrier spacing, workpiece loading quantity, processing time, accumulation capacity, and the overall conveyor layout.

Production Process and Operating Sequence

The production line follows six main operating stages:

Forklift-Assisted Loading → Angled Dip Coating → Drip-Off → Thermal Drying → Natural Cooling → Forklift-Assisted Unloading

Stage 1: Forklift-Assisted Loading

Carbon steel structural components are transported to the loading station using a forklift.

Operators position the workpieces onto the designated carriers or hanging fixtures.

The loading arrangement is designed to accommodate the product dimensions, weight, and required coating orientation.

Once the workpieces are securely positioned, the Power and Free conveyor transfers them toward the dipping station.

Stage 2: Liquid Immersion Coating

Process time: 6 minutes

The workpieces enter the angled dipping station and are immersed in the liquid coating material.

The 45° dipping arrangement is intended to facilitate immersion of the structural components according to their geometry.

Immersion duration and movement sequences are controlled according to the process requirements.

Following the specified dipping period, the coated workpieces are withdrawn from the tank and transferred to the next station.

Stage 3: Paint Drip-Off

Process time: 90 minutes

After immersion, the coated structural parts remain in a designated drip-off area.

This stage allows excess liquid coating material to drain from the workpiece surfaces before thermal drying.

The relatively long drip-off period is an important characteristic of this production line.

The Power and Free conveyor can accommodate the required residence time through suitable accumulation and carrier positioning arrangements.

The drip-off section is designed with consideration for workpiece spacing, drainage direction, coating collection, and available workshop space.

Stage 4: Thermal Drying

Process time: 48 minutes

Drying temperature: 60–80°C

Following the drip-off stage, the coated components enter the drying oven.

Controlled heating removes volatile components and supports the film-forming or curing process required by the selected liquid coating system.

The specified operating conditions for this line are 48 minutes at 60–80°C.

The final drying performance depends on the coating formulation, workpiece thickness, actual metal temperature, airflow, and heating conditions.

Oven design must also account for the safety and ventilation requirements associated with the selected coating materials.

Stage 5: Natural Cooling

Process time: 6 minutes

After drying, the workpieces enter the natural cooling section.

The specified cooling duration is 6 minutes.

During this stage, the temperature of the coated components decreases before unloading and subsequent handling.

Actual unloading temperature depends on workpiece mass, geometry, ambient conditions, and cooling area design.

Stage 6: Forklift-Assisted Unloading

At the final station, finished structural components are removed from the conveyor using forklift-assisted manual handling.

The workpieces can then proceed to inspection, assembly, storage, or subsequent manufacturing operations.

The unloading area is arranged according to the product dimensions, handling method, and available factory space.

Production Flow and Process Timing

Production Stage	Operating Time	Main Purpose
Loading	According to handling requirements	Secure workpiece positioning
Angled Dip Coating	6 minutes	Liquid coating application
Drip-Off	90 minutes	Drainage of excess coating material
Thermal Drying	48 minutes	Drying and film formation
Natural Cooling	6 minutes	Reduction of workpiece temperature
Unloading	According to handling requirements	Removal of finished components

The specified immersion, drip-off, drying, and cooling stages total 150 minutes of process residence time, excluding loading, unloading, and transportation delays.

This does not represent the production cycle time per carrier or the interval between finished batches. Actual line throughput depends on the number of carriers that can be processed simultaneously within each section and the complete conveyor arrangement.

Advantages of the Structural Steel Dip Coating Line

Suitable for Heavy Structural Components

The conveyor system is configured for workpieces weighing up to 2,000 kg per carrier, making it suitable for selected medium-to-heavy fabricated steel products.

Controlled Immersion Coating

The angled dipping station provides a defined coating application process that can be adapted to complex structural geometries.

Extended Drip-Off Capability

The production line incorporates a dedicated 90-minute drainage stage, allowing excess coating material to drain before the drying process.

Flexible Carrier Management

The Power and Free conveyor supports controlled carrier movement and accumulation, helping coordinate processing stages with different residence times.

Reduced Manual Transportation

Forklifts are used at the loading and unloading stations, while the conveyor handles workpiece movement between the main coating processes.

Customized Equipment Arrangement

Dipping tank dimensions, carrier configuration, conveyor routing, drying equipment, and factory layout can be developed according to the customer's products and production requirements.

Typical Applications

This type of liquid immersion coating system can be considered for suitable carbon steel products such as:

Fabricated structural steel assemblies
Industrial machinery frames
Heavy steel supports
Welded metal structures
Agricultural equipment components
Industrial brackets and frames
Construction-related steel components
Other fabricated carbon steel products

Product suitability should be evaluated according to geometry, drainage characteristics, coating requirements, and workpiece weight.

Customized Engineering for Liquid Painting Production Lines

CHG develops liquid coating production systems according to the customer's manufacturing process and technical requirements.

Important information for preliminary engineering includes:

Workpiece drawings and photographs
Carbon steel material specifications
Maximum dimensions
Maximum individual weight
Workpiece center of gravity
Required production capacity
Number of workpieces per carrier
Coating material and technical data
Required film thickness
Surface preparation requirements
Immersion and drainage requirements
Drying temperature and time
Available factory dimensions
Workshop clear height
Heating energy
Local electrical specifications
Loading and unloading conditions

Based on these parameters, the engineering team can determine the appropriate dipping tank, lifting or positioning mechanism, Power and Free conveyor, carrier design, drip-off area, drying oven, cooling section, and control arrangement.

Industrial Liquid Dip Coating Solutions from CHG

CHG provides customized liquid painting production line solutions for industrial manufacturers requiring integrated coating equipment and material handling systems.

This structural steel dipping line combines 45° angled immersion coating, a heavy-duty Power and Free conveyor, forklift-assisted loading and unloading, extended paint drainage, and controlled thermal drying.

The equipment is engineered to accommodate the actual workpiece dimensions, coating process, and required production output.

Contact CHG with your structural component drawings, maximum workpiece weight, coating specifications, and production requirements to receive a customized liquid dip coating line proposal and quotation.

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products details

Automatic Method Type Coating Production Line for Carbon Steel Parts Professional Liquid Paint Line

Automatic Method Type Coating Production Line for Carbon Steel Parts Professional Liquid Paint Line

Automatic coating production line carbon steel

Liquid paint line carbon steel parts

Professional liquid painting line automatic