Enamel Coating Line & Enamel Machine Suitable for Kitchen Oven and BBQ

Product Description

Product Description

Basic Information

Product Name: Oven Enamel Production Line (Comprising a fully automatic pre-treatment system, wet automatic enamel spraying/dry electrostatic automatic enamel spraying modules, wet enamel drying, high-temperature firing, cooling, and inspection units. Complete lines or individual modules can be customized to meet specific requirements).

· Equipment Type: Integrated automated enamel processing production line, specifically designed for oven cavities, oven doors, cooktop panels, grill racks, and other cookware components. It encompasses the entire process of "pre-treatment, enamel coating/drying, firing, inspection," making it suitable for batch production needs in the home appliance industry.

Applicable Workpieces:

Categories: Oven liners (rectangular and curved), oven door glass frames, grill racks (wire mesh), and oven outer casing panels.

Materials: Cold-rolled carbon steel (the mainstream choice), Stainless Steel (grade 304, suitable for high-end ovens).

Specifications: Compatible workpiece dimensions range from 300mm x 200mm x 100mm (small oven liner) to 1200mm x 600mm x 400mm (large built-in oven cavity). The device accommodates flat panels as well as irregular shapes, including but not limited to the rounded corners of liners and the wire mesh of grill racks.

Product Advantages

Specialized coating solutions for irregular workpieces, encompassing all oven components: For complex structures such as rounded corners of oven liners and gaps in grill rack mesh, a dual-mode coating module is customized. This includes electrostatic coating for rectangular/flat parts (e.g., door panels, with coating uniformity ≥99%), and servo-driven roller coating for curved/irregular parts (e.g., liners, racks, with a rotation speed of 8-25r/min, automatically adjusted based on the workpiece curvature). Combined with narrow-aperture enamel slurry nozzles (aperture 1.2-1.5mm), which precisely fill grill rack mesh gaps, this setup avoids the "thin coating on edges, missing coating on mesh" issues associated with traditional equipment. The component qualification rate consistently exceeds 99.6%.

The multi-zone, freely adjustable temperature curve of the firing furnace caters to the differential temperature requirements of various oven components. The furnace features multi-zone control and adjustment, allowing customizable temperature curves to satisfy the distinct enamel firing temperature curve demands of various workpieces, glazes, and oven components in different areas. This setup allows for the qualification of different workpieces through tailored temperature curve adjustments. To address the varying needs of oven liners, which require a thick coating and strong adhesion, and door panels, which need a thin coating and a high gloss finish, temperature and dwell time are independently regulated by a PLC. The rational layout of heating elements and the temperature curve control within the enamel furnace ensure temperature uniformity within ±5℃, thereby ensuring consistent enamel quality across different components in the same batch and preventing enamel discoloration due to localized over-firing.

Product Advantages

Dual excellence in energy saving and environmental protection, reducing operating costs: TIMS's enamel firing furnace utilizes a composite insulation layer made of 1260℃ high-alumina refractory brick and aluminum silicate fiber wool (heat loss rate ≤9%), along with nano thermal insulation materials. It is also equipped with a flue gas waste heat recovery heat exchanger (that preheats combustion air, achieving a waste heat utilization rate of ≥72%. By integrating TIMS's patented technologies (CN ZL 202222652871.4, CN ZL 202320531560.4, CN ZL 202423315073.8), the furnace reduces heat loss by 40% compared to traditional equipment, resulting in a 40% decrease in energy consumption for the enamel production line. The waste heat collection and reuse system diminishes the damage to the equipment structure and electrical control system from heat dissipation, enhances operational safety, and extends the equipment's service life. It also reduces emissions and operating costs, achieving environmentally friendly, energy-efficient, green, low-consumption, and high-efficiency production.

Oil-water separation technology: TIMS's pre-treatment equipment employs automatic oil-water separation technology, which reduces the consumption of degreasing agents and rinse water by approximately 50%. This not only saves on chemicals but also decreases the costs associated with wastewater treatment. Consequently, production costs are lowered and product quality is improved.

Counter current rinsing system: TIMS's pretreatment equipment employs a mature counter current design, which reduces the consumption of rinse water and the volume of drainage, thereby saving on wastewater treatment costs. Many factories report savings in rinse water exceeding 30%.

Product Advantages

Full process automation adapts to the fast-paced production of appliances: From loading the workpiece, degreasing/phosphating, drying and enamel coating, to high-temperature firing, cooling, and inspection, the entire process is fully automated. Only two personnel are required for material feeding and handling of finished products, reducing labor costs by 85% compared to manual lines. The system supports "one-touch switching of workpiece models" by calling pre-set process recipes via PLC (e.g., switching from a 50L to a 60L oven liner, with an adjustment time of ≤3 minutes), meeting the multi-model mixed-line production needs of the home appliance industry. The full line cycle time is ≤25 seconds per piece.

Strict quality control, complies with food contact safety standards: Equipped with an "online coating thickness gauge and visual defect detection system," it identifies defects such as pinholes ≥0.15mm and scratches in real-time. It also simultaneously records coating parameters and firing temperature curves for each workpiece, with data storage lasting ≥1 year. Offline inspection units conduct adhesion tests, salt spray resistance tests (≥500 hours), and food contact safety tests (in compliance with GB 4806.10-2016), ensuring that finished products meet the dual safety requirements of "high-temperature use and food contact" for ovens.

Product composition

Pre-treatment module

It includes degreasing (with a stirring and temperature control system as needed, at a temperature of 50-55°C), a 2-stage rinsing process (equipped with an online water quality monitor), pre-treatment (automatic chemical dosing and level compensation, with a treatment film thickness of 4-6μm), and a hot air circulation drying tunnel (with a temperature range of 90-200°C and an air velocity of 1.5-3.5m/s). The interior of the drying tunnel can be lined with SUS304 stainless steel (which is easy to clean and prevents impurity adhesion).

Enameling module

Automatic coating unit: 2 servo-driven roller coating machines (designed for curved and irregular workpieces, with a speed range of 8-25 r/min), a precise enamel slurry delivery pump (with a flow rate error of ±1.5 mL/min), and an anti-splash coating chamber (featuring a negative pressure design and equipped with an enamel slurry recovery system).

Electrostatic coating unit: The unit consists of two electrostatic coating machines designed for flat workpieces, operating at an electrostatic voltage range of 60-80kV with a transfer efficiency of at least 95%. Additionally, it features an automatic spray gun positioning mechanism that ensures repeat positioning accuracy within ±0.05mm.

o Auxiliary units: An optional online coating thickness gauge (laser type, with an accuracy of ±3μm) and a workpiece flip-over mechanism (ensuring uniform coating on the inner and outer walls of oven liners).

Firing/curing module: The module consists of a continuous gas radiant tube firing furnace or an electric heating enamel furnace (which includes an inlet/outlet cold-hot workpiece exchange zone, operating at 280-350°C, and a firing zone, operating at 750~850°C). Additionally, it features a waste heat recovery heat exchanger that utilizes flue gas heat to preheat combustion air, an overhead conveyor line outside the furnace, and a heat sealing system. The module also incorporates high-temperature resistant racks.

Product composition

Control & environmental protection module: PLC control cabinet (12-inch touch screen, supports storage of multiple process recipes), MES data interaction unit (real-time upload of production capacity, qualification rate, energy consumption data); Environmental protection unit (oil-water separator, pulse-jet bag filter, activated carbon adsorption tower, wastewater neutralization tank), ensuring wastewater, exhaust gas and particles meet emission standards.

Product Functions

Full process automated processing: Achieves unmanned continuous operation of oven enamel components through the stages of "degreasing, pre-treatment film formation, drying, precise coating, high-temperature curing, cooling, and inspection." Key processes are free from manual intervention, preventing issues such as uneven coating thickness and insufficient drying that can result from human operation, thereby ensuring batch production consistency.

Multi-component compatible production: The dual-mode design of "wet automatic spray coating and dry automatic electrostatic spray coating" enables simultaneous adaptation to various shaped components, such as oven liners, door panels, and grill racks. It supports the storage of process recipes for over 10 oven models, allowing for one-touch switching of workpiece parameters (e.g., liner dimensions, coating thickness), thereby meeting the needs of multi-variety mixed-line production.

Precise process parameter control: The PLC system continuously monitors critical parameters such as degreasing temperature and concentration, spray coating flow rate, and firing temperature. It automatically adjusts the equipment operation status, for instance, by changing the spray coating speed in response to the workpiece curvature and adjusting the firing time according to the part thickness. This ensures that the enamel layer adhesion and gloss of each component meet the required standards (Gloss ≥90GU, in compliance with GB/T 13452.2).

Quality traceability and environmental compliance: A distinct traceability QR code and FRD system can be allocated to each component, which automatically documents comprehensive process data (including spray enameling parameters, firing temperature and duration, inspection outcomes), facilitating data inquiry for over a year and data export. 

Quality traceability and environmental compliance:The environmental module effectively manages wastewater, exhaust gas, and particles produced during the production process, conforming to rigorous domestic and international standards without the necessity for additional environmental equipment.

Product features

Appliance - specific design: Customized for the characteristics of "diverse forms and high safety requirements" of oven components, specific automatic spray - coating processes and high - temperature firing curves are designed for casing and flat panels. During the firing process, liners undergo an extended high - temperature curing period to strengthen the enamel adhesion under high - temperature usage conditions, thus addressing the issue of "poor adaptability" associated with traditional universal production lines.

Modular and easily expandable: Each functional module can be independently separated and combined. Production capacity can be increased by adding enameling units; the range of applicable product categories can be expanded by incorporating specialized enameling modules, such as for grill racks, without the need to replace the entire line. This extends the equipment's lifespan and reduces subsequent upgrade costs. For instance, expanding an oven production line from household to commercial demand requires only adjustments to furnace temperature parameters and conveyor speed.

Easy operation & maintenance: Equipped with a graphical touch screen interface, pre-set with common process templates for oven components (e.g., 60L liner, built-in oven panel). New operators can work independently after just 2 hours of training. Core components (e.g., enameling pumps, radiant tubes) utilize a modular design, with replacement times ≤1.5 hours. The daily average equipment failure rate is ≤0.05%, reducing downtime losses.

Intelligent monitoring: TIMS's automated, intelligent, and informatized enamel production line utilizes PLC and touch screens to display and monitor data in real-time, including conveyor speed, furnace temperature, various pressures, production capacity, and safety. Abnormal situations, such as temperature exceedance or enameling material shortages, trigger both audible and visual alarms. Additionally, the system records maintenance cycles for core components, including spray guns and heating elements.

High efficiency & low consumption:  TIMS's automated, intelligent, and informatized enamel production line features full-process automation, a short design cycle, refined organization, and experienced workers. These elements contribute to a reduced lead time for production, installation, and commissioning, automated production with fewer staff or unmanned production, efficient energy conversion, waste heat recovery, and coating material recycling. 

Consequently, TIMS's enamel production lines achieve low energy consumption, reduced labor costs, and high material recovery rates

High automation and stability: TIMS's automated, intelligent, and informatized enamel production line ensures full-process automation. This includes robotic automatic loading, robotic automated production, robotic automated changeover for flexible production, robotic automatic transfer, and robotic automatic unloading. These features enable a less-headcount or even unmanned "one-piece flow AI intelligent" production.

Excellent Enamel Quality: Wet enameling employs automatic flow coating, roll coating, or spray coating, while dry enameling utilizes automatic electrostatic spraying to ensure a uniform coating. The high-temperature firing furnace features temperature control precision within ±3°C, guaranteeing high firing quality. The resulting enamel layer is uniform and smooth, with outstanding impact resistance, acid and alkali resistance, and adhesion of ≥5N/cm, meeting the ASTM D3359 standard.

Company Profile

ABOUT US

TIMS Group Company was founded in 2003. It is a professional company engaged in the research and development, manufacturing, sales and service of high-end enamel equipment, intelligent enamel production line equipment, intelligent coating production line equipment, intelligent spraying, high-temperature enamel firing equipment, robot automation and other non-standard automation equipment. It is a national high-tech enterprise, vice chairman unit of China Enamel Industry Association, benchmark enterprise of China Enamel Industry Association, intellectual property demonstration enterprise in Guangdong Province, specialized and special new enterprise in Guangdong Province, gazelle enterprise in Guangdong Province, standardized enterprise in Guangdong Province, innovative small and medium-sized enterprise in Guangdong Province, and member unit of China Hardware Products Association Metal and Non-metal Coatings Committee for Metal and Non-metal Coatings.

After years of development, TIMS strategic layout has been formed with Shenzhen Qinhai TIMS Technology as its headquarters and Dongguan TIMS and Hubei TIMS manufacturing bases. The Dongguan manufacturing base is located in Dongguan City, Guangdong Province, with a factory building area of 15,000 square meters. The Hubei Manufacturing Base is located in Yunmeng Economic Development Zone, Xiaogan City, Hubei Province, covering an area of 100,000 square meters.

Until now, we have 93 utility model patents, 31 invention patents, and 33 invention patents under application. TIMS has won one second prize for scientific and technological progress of the China Light Industry Federation, one software copyright and three registered trademarks. TIMS's "Intelligent Pre-treatment Coating Production Line", "Intelligent Cleaning Production Line for Water Heater Inner Tank", "Intelligent Enamel Firing Production Line for Water Heater Inner Tank" and "Intelligent Enamel Firing Production Line for Water Heater Inner Tank" have obtained the first set of products in Guangdong Province. We have also obtained the IATF16949:2015 Quality Management System Certification and have published more than 10 academic papers in various professional journals and magazines.

COMPANY BUSINESS SCOPE

- Complete Set Of Automatic Enamel Coating And Firing Equipment

- Automatic Pre-surface Treatment Equipment

- Automatic Painting And Powder Coating Equipment

- Robot Automation And Other Non-standard Automation Equipment

- Automatic Electrophoresis Coating Production Line Equipment

- Various Logistics Conveying Equipment

 

DONGGUAN TIMS AUTOMATIC EQUIPMENT CO., LTD

Dongguan Address: 10B Intelligent Equipment Industrial Park, Qinfeng West Rd No.2, Qinfeng Town, Dongguan City, Guangdong Province, China

 

TIMS TECHNOLOGY (HONG KONG) LIMITED

Hong Kong TIMS Address: 5th floor, Heda Business Mansion, 902 Emperor Street, Shamshu, Hong Kong, China

 

SHENZHEN TIMS TECHNOLOGY CO., LTD

Shenzhen TIMS Address: No.1, Qianwan 1st Road, Qianhai Shenzhen-Hong Kong Cooperation Zone, Shenzhen City, Guangdong Province, China

 

HUBEI TIMS MACHINERY EQUIPMENT CO., LTD

Hubei TIMS Address: TIMS Advanced Technology Industrial Park, Xinxial Road, Yunmeng County Economic Development Zone, Hubei Province, China

COOPERATIVE CUSTOMERS

FAQ

FAQ

1. How long does it take to produce the equipment we ordered?
The production lead time depends on your specific customization requirements. For a complete coating line (the most common type of equipment we supply), the standard production cycle is 30-70 days. If your order involves special configurations (e.g., extended production capacity, or additional functional modules), we will provide a detailed timeline after confirming the technical plan with you.

2. If I want to discuss product procurement with you, what information do I need to provide?
To help us quickly customize solutions and quote accurately, please share the following key details:

1). Type of workpieces to be processed (e.g., auto parts, metal frames, household appliances);

2.) Maximum and regular dimensions of the main workpieces (length × width × height, in mm or inches);

3). Weight range of workpieces (maximum and minimum weight, in kg or lbs);

4). Expected daily output (based on 8 working hours/day and 24 working days/month, e.g., 500 pieces/day);

5). Coating process requirements (e.g., liquid painting, powder coating, enamel coating, electrophoretic coating...);

6). Curing conditions (room temperature curing, electric heating curing, fuel heating curing, natural gas/LPG curing);

7). Available factory space dimensions (length × width × height, in meters or feet) – this helps optimize equipment layout.

3. How will you install the equipment we ordered? And how long will the installation take?
We provide turnkey installation and commissioning services: Our professional engineers will go to your factory to install, debug, and test the equipment until it operates stably.
1). Installation duration: Generally 30-60 days, which varies based on the project complexity (e.g., small coating machines take ~20 days, while large integrated lines may take 60+ days). We will confirm the exact schedule in the contract.
2). Cost note: As per industry practice, the buyer shall bear the on-site engineers' travel expenses (round-trip air tickets), accommodation, and meals during their stay at your factory.

4. What after-sales services do you provide?
We offer comprehensive after-sales support to ensure your equipment runs smoothly:
1). Spare parts supply: We provide a set of free wearing parts (e.g., filters, nozzles) with the equipment. For subsequent needs, we can deliver spare parts within 3-7 working days via international logistics.
2). Maintenance guidance: We will provide a detailed "Equipment Maintenance Manual" and a list of recommended consumables. Our team can also conduct online training for your maintenance staff to help build a regular maintenance system.
3). Technical troubleshooting:
a. Remote support: If there are software or program issues, our engineers can provide remote debugging within 2 hours of your request.
b. On-site support: For major mechanical failures, we will arrange engineers to your factory within 5-10 working days (subject to visa approval) – the buyer only needs to cover travel. accommodation and meal costs.
4). Warranty period: All equipment comes with a 12-month warranty (from the date of successful commissioning). During this period, we will repair or replace faulty components (non-human damage) free of charge.