DONGGUAN TONJA INDUSTRIAL CO.LTD
DONGGUAN TONJA INDUSTRIAL CO.LTD
DONGGUAN TONJA INDUSTRIAL CO.LTD

PRODUCT CATEGORIES

ABOUT US

The company was established in November 2016 and has introduced a complete set of automated high-precision sheet metal production equipment from Japan's AMADA company. It is a professional precision sheet metal manufacturing and production enterprise. The company has always been committed to being an excellent sheet metal enterprise that integrates the design, development, manufacturing...

Non standard customization

Customized according to customer needs

Production process

Pre-process for painting

Pre-process for painting

Press riveting and tapping teeth

Press riveting and tapping teeth

Bending forming

Bending forming

Weld

Weld

Polish

Polish

Erp system

Erp system

Blanking parts check

Blanking parts check

Spray coating

Spray coating

ALL PRODUCTS

COMPANY EXHIBITION

WHY CHOOSE US

Advanced equipment

The main production equipment is imported from Japan to ensure processing accuracy.

Number of devices

The number of production equipment has a certain scale, and there is a certain degree of flexibility in output and sample processing

Technical support

In terms of early mold preparation and processing technology support, it has advantages that ordinary sheet metal processing factories cannot surpass

Development advantages

Supported by supporting factories, the cost advantage of mold development is greater than other factories

FACTORY DISPLAYS
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COMPANY CERTIFICATES

LATEST NEWS

What are the common safety hazards in Rapid Sheet Metal Fabrication?

Sheet Metal Fabrication is a process of manufacturing Sheet Metal Parts through operations that include forming, cutting and welding and this hence has a number of risks with regards to safety. It is thus important to be conversant with these hazards as this will help in eliminating these dangers in working environments. Below are a few common safety hazards in sheet metal processing: 1. Mechanical injuries: Pinches and entanglements: Some of the associated dangers include cutting of cloths or human limbs by the moving parts of shears and presses, which are used in high-speed machines. Cutting Injuries: In the incorrect operation of sharp tools and the molds, an individual is likely to have a cut on his or her hand. 2. Fire and Explosion: Spark initiation: Such processes as welding and grinding may cause sparks that ignite oil, papers, or flammable gases. Electrostatic discharge: For instance in activities like powder coating the build-up of static electricity will lead to an explosion. 3. Electrical hazards: Risk of electric shock: Accidents which may result in electric shock includes; Ungrounded equipment, broken wires, wet working conditions. Short circuit and arc flash: The failure of a circuit or its improper usage may lead to an arc flash that may lead to burns. 4. Falls and stumbles: Working at Height: If safety measures are not followed while installing a roof or overhauling the existing one, there is a chance of falling. Slippery floors: Such floors may be slippery, wet or filled with debris and this tends to make people to slip or even trip. 5. Hazardous substance exposure: Inhalation of dust: Kawasaki conduct cutting operations, drilling and other processes and generate metal dust which if inhaled in a long span contributes to lung disease. Harmful gases: Some of the gases emitted during welding process include carbon monoxide, nitrogen oxides which have negative impacts in respiratory tract. Chemical exposure: It should be noted that some of the products that may be used in cleaning the area such as cleaning agents, paints, and solvents are Radioactive and may cause skin irritation or poisoning. 6. Noise pollution:Hearing damage: High decibel machine operation sounds are dangerous since they can lead to permanent hearing loss within a short time/frame. 7. Visual Harm: Bright light and radiation: Both the UV and IR radiations emitted from the welding process may affect the eyes causing even cataracts.

02 October-2024

How to keep Precision Sheet Metal operations safe?

The safety of the operators at Custom Cut Sheet Metal Company is complex and requires measures that will in the end protect workers and maintain the efficiency of the stream. Some of the key safety measures and practice guidelines are mainly: 1. Personal protective equipment: Every operator shall have proper protection appareals which includes; hand protector such as cut resistant gloves, eye protection like safety glasses or goggles, hearing protection such as ear plugs or muffs, respiratory protection like dust mask and foot wears such as closed shoes. More personal protective equipment may be required particularly when dealing with metal edges such as knives. 2. Training and Education: The goal is to supply constant safety training to make certain that employees understand all of the machine running procedures, potential danger factors and emergency response. Employees that are new to a company should undergo through orientation hr sessions which involve safety information concerning the job they take and the company at large, while other employees should undergo through safety remembrance which makes them aware of new changes in safety rules and regulations, and operating techniques used in the company. 3. Equipment Maintenance and Inspection: Inspect all the mechanical equipment like punch presses, bending machines, shears, etc. on a periodic basis and replace the worn out onparts periodically so that they do not cause a breakdown of the equipments. Employ automation switches and other safeguards like emergency buttons, auto power-off facilities and isolation guards in order to prevent startçuoration in mishap. 4. Workplace organization and cleanliness: Ensure proper hygiene in the workshop by removing items such as stones or screws from the floor to minimize on cases of tripping or slipping. Tools and materials have to be stored systematically so that staking or piling may not become a cause of safety troubles. 5. follow operating instructions: When necessary, create and implement concrete operating procedures and write clear safety guides which do not allow unauthorized workers to manipulate specific pieces of equipment. Neglect the two-person check rule each time before you carry out dangerous tasks like starting huge equipment or lifting something heavy. 6. Emergency plans: Organise an emergency plan for fire, chemical spillage, and injury to persons at the workplace. Ensure placement of first aid kits, firefighting apparatus and other emergency related facilities and also routinally perform exercises on evacuation and rescue. 7. Health Monitoring and Support: Maintain the health of people at the workplace particularly those at risk of exposure to noise, dust, among other hazardous substances. Organizational support and impart knowledge of stress management, availability of exercising sessions and other health facilities for the employees. 8. Compliance & Audit: Follow laws governing occupational health in the local area, regularly inspect the internal and external safety systems, and find out areas of danger. When it so applied, precision Sheet Metal Boxes fabrication operations stand to gain by optimizing productivity and also reducing risks to employees. Safety management should not be regarded as something extra or as an adding on activity but rather as an inherent and significant aspect of an organization’s climate and practices. The importance of continuing safety and measures that can be taken can lower the risk of accidents happening at work as well as improve morale and productivity of the team.

19 September-2024

What requirements should Custom Sheet Metal Enclosures Meet?

Custom sheet metal enclosures are specifically designed and fabricated to meet the unique requirements of various applications. These enclosures serve as protective housings for electrical components, mechanical parts, or sensitive equipment in a wide range of industries, including telecommunications, data centers, manufacturing, and the military. What considerations do particular Sheet Metal Enclosures entail? 1. Design Flexibility: Custom Sheet Metal Enclosures are unique to the application they fulfill. This includes a custom dimensional, channels for cables and airflow, and hardware for hanging apparatuses. Manufacturing design is usually teamwork involving the client and the manufacturer in designing the product to meet specific requirements. 2. Material Selection: The type of sheet metal to be used depends on the enclosure’s purpose, the climates it will be exposed to, and the appearance it has to possess. Some of the popular materials used are carbon steel, stainless steel, aluminum, and galvanized steel. All materials are different and their characteristics include strength, durability to corrosion, and weight. 3. Fabrication Processes: Custom sheet metal enclosures refer to the creation of different shaped and sized container-like structures, which can also be made from various metals; this process has several steps namely cutting (using laser, plasma, or water jet), bending, welding and punching. The typical applications of CNC machines are involved with accuracy and consistency. Protection may also be coated with powder or painted to have a more vibrant appearance when it comes to its resistance against corrosion. 4. Quality Control: The enclosures made from sheet metal are standardized based on the design and functions required and this comes with quality control mechanisms that have to be met. This implies dimensional inspection, material verification, and surface finish inspection. 5. Custom Features: Additional options on Custom Sheet Metal Fabrication depend on the specific application and may incorporate a lock, hinged doors, transparent windows, and metallic plating. Some may need additional certifications: like NEMA, which stands for Nurturing Environmental Management Act, or UL, which stands for Underwriters Laboratories. 6. Integration and Assembly: At times, these sheet metal IC enclosures are designed to be part of other components such as brackets, internal reinforcements, or coolants among others. This, in turn, needs planning, planning, to have everything properly intermeshed, and working to the best of its capacity. How are the costs and lead times for custom sheet metal enclosures determined? 1. Cost-Effective Solutions: It is worth mentioning that the bespoke sheet metal enclosures are made as per the requirement but the manufacturers/craftsmen use various methods to control the costs. This can comprise elements such as standardization, material utilization as well as production processes. 2. Lead Time and Delivery: The time taken to produce custom sheet metal enclosures can take longer time than expected depending on the design and type of materials to be used as well as other manufacturers. A good client-manufacturer relationship means having a clear understanding of what is expected of the other party and being in a position to know when the delivery is near. Made-to-order sheet metal accommodation represents an elegant and durable cover for the equipment in various fields of its application. Since these enclosures can be designed to fit the exact specifications of the given project, a lot of consideration is given to the challenges likely to be faced in each project.

02 September-2024

What are the requirements for Custom Metal Stamping?

Metal stamping also referred to as metal forging or stamping is a process of converting a flat metal sheet into a target shape and form by using a die and a press. It has become commonly employed in line with car production, electrical and electronics industries, and the production of consumer goods because of its effectiveness in delivering large quantities of complex components. To ensure the success and quality of custom metal stamping projects, there are several key requirements that need to be considered: To ensure the success and quality of custom metal stamping projects, there are several key requirements that need to be considered: 1. Material Selection: Type of Metal: The type of metal used should therefore correspond to the function of the part, taking into consideration as regards strength, electrical conductivity, and resistance to corrosion such as steel, aluminum, brass, copper, and stainless steel. Thickness and Hardness: These should be properly in a position to withstand the thickness and hardness necessary for stamping together with the design handles. 2. Design Specifications: Detailed Drawings: Dimensions, tolerances, and particularities should be given on technical drawings of materials and requirements for their production. Tooling Design: This means that the ooling design must be very accurate so as to be able to make the actual stamping dies to produce the parts as desired. 3. Tolerances: Dimensional Accuracy: Tolerances have to be explicitly stated and MUST be possible with the selected stamping and material type. Bend and Form Tolerances: If the part contains bends or any forms that are difficult to define, such forms must have also laid down tolerances. 4. Surface Finish Requirements: Texture and Finish: An identification of the surface finish standards should be provided together with any further operations that may be necessary subsequent to the stamping processes, for instance, plating, painting, or polishing. Edge Quality: The edges after stamping (sharpness and presence of burrs) should meet the need for safety and functionality of the design. 5. Quality Control: Inspection Criteria: The characteristics of inspection that must be adhered to include scope defined specifically for a part for the purpose of ascertaining whether they meet the specified design or not. Sampling and Testing: It is important that the prototypes and samples should be subjected to a host of tests to determine their compliance with the standard quality and performance. 6. Production Volume and Lead Time: Production Volume and Lead Time: Quantity: The required amount of actual production has to be taken into account in order to decide regarding the tooling and the means of production which is the most effective. Lead Time: The time taken to develop tooling and the production lead time should be reasonable and mutually decided by both the manufacturer and the client. 7. Cost Considerations: Material Costs: Metal material should also be taken to be costly and hence its cost should be included in the cost of production. Tooling Costs: It is very often to have large and expensive TO for custom tools, especially for complex parts. 8. Post-Stamping Processes: Secondary Operations: Other holes may be required, they may need to drill, tap, and possibly weld and all these may have to be taken into account in terms of planning as well as cost. Packaging and Delivery: Often, the parts may need special packaging for the protection of the parts during transportation especially when the orientation of the part is very sensitive. 9. Regulatory and Safety Compliance: Industry Standards: It is mandatory for parts to meet the standards that are applicable in the specific sector, this due to the fact that some industries have set specific rules and regulations that need to be followed of which include the automotive and health sectors. Safety Requirements: Protection measures such as putting on coatings or very efficient treatments ought to be considered. 10. Communication and Collaboration: Technical Support: Post-purchase communication between the client and the manufacturer is necessary to attend to problems that may occur in the course of development and manufacturing. Feedback Mechanism: Feedback and adjustment should occur for fine-tuning the process and for subsequent production runs. Achieving these requirements means that projects in custom metal stamping are intricately done, timely, and to the best standard. The development of such products should involve cooperation with manufacturers who possess a great deal of experience in the field.

19 August-2024

How to design a Sheet Metal Enclosures?

TONJA is a professional manufacturer of precision sheet metal and a producing company. Sheet Metal Enclosures are also known as metal cabinets or boxes and are constructions created from sheet metal to enclose and protect devices, mechanics, or any sort of equipment. These enclosures are used as protective and security barriers to keep out unwanted intruders and protect against other external degrading factors, an important aspect of controlling heat in the system. What materials are typically used to make Sheet Metal Enclosures? Steel: The choice that is made most often since it is the strongest and most durable of the three. corrosion resistance is further improved by using galvanized steel. Aluminum: It is a light metal also it has anti-corrosive properties, common where low density or the presence of corrosive substances is a factor. Stainless Steel: has great and therefore can be applied where the environment is very harsh or in food processing industries. What are the design features of Custom Sheet Metal Fabrication? Modular Design: With the current trends in functional Lowes steel buildings, the majority of the buildings are designed in modular construction to suit modification or expansion of the building. Ventilation: Vents or fans are incorporated into it for agreed heat dissipation of enclosed equipment. Access Panels and Doors: Ensure that it is easy to get at for carrying out maintenance work and for installing the equipment. These are sometimes lockable for security purposes. Cable Management: This should also contain measures for the cables’ routing and their management in terms of accommodation. Customization: Clients can also choose between enclosures regarding the size, the desired shape, and how they would like the enclosures to be mounted. What are the manufacturing processes for Custom Cut Sheet Metal? Cutting: Depending on the chosen material, the metal sheets are shaped by laser cutting, waterjet cutting, or plasma cutting. Bending: To give the metal the desired shape, there is the need to use the press brake. Welding: As for the connection of metal parts the following welding methods can be used. Finishing: Optional finishing that can be applied includes powder coating or painting to aid the degree of corrosion and make it look aesthetically superior. We also produce high-precision supporting sheet metal production equipment notably, widely used sheet metal information management systems in the market.

08 August-2024

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