In any manufacturing industry, quality control (QC) always plays an important role in ensuring that products meet quality standards. For United Nail Products Co ., ltd, a leading nail manufacturer in Vietnam, the quality control process is always focused on at every stage of production to provide customers with products that meet the highest standards. With the goal of providing products of superior quality and competitive prices, United Nail constantly improves its production and quality control processes.
MỤC LỤC BÀI VIẾT
1. QC process for nail stamping and nail size inspection
Each nail after being shaped goes through a strict quality control process. The automatic measurement system with high precision will quickly control the size and shape of each nail. Any nail that does not meet the standards in length, diameter or shape is immediately eliminated. This ensures that all products are of consistent quality and meet export standards.
Thanks to the combination of modern technology and manual inspection by the staff (QC), the production process always achieves high accuracy and reliability.
photo 1: QC is checking the size of nails from the nail punching machine
After the nail punching process is completed, each nail will be thoroughly inspected by the automatic measurement system. This is an important step in the quality control (QC) process, helping to detect and immediately eliminate products that do not meet the requirements for length, diameter, or shape of the nail head. United Nail applies precise sensors to measure the size of each nail, ensuring that no defective products are allowed to pass this stage.
In parallel with the automatic inspection process, QC staff at United Nail factory also participate in random inspection of nail samples. They use specialized measuring rulers and manual inspection tools to confirm the accuracy of the automatic measurement system, and detect small errors that may not be detected by the machine. The combination of modern technology and technical expertise of workers helps to improve the reliability of the inspection process.
2. Nail rolling process and roll size inspection
After the nails are stamped and checked for size, they will move to the roll welding process – a technical step that requires high precision and advanced techniques. Here, the nail strands are fed into the welding machine to connect the head to the tail, forming continuous nail rings. This process is carried out automatically with the support of modern machinery to ensure that the nail rings are connected accurately and evenly.
Once the nail rings have been welded, they will be rolled into nail rolls of a certain size. The nail rolling must be done carefully to ensure that the nail rings are rolled tightly, not loose and ensure the concentricity of the roll. Each completed nail roll must undergo a size inspection process using automatic and manual measuring devices. Workers will use measuring tapes to check the thickness, diameter and tension of the nail rings in the roll.
In addition, visual inspection is also very important, especially for factors that are difficult to measure by machines such as the concentricity of the nail roll or the condition of the welding rings. This helps to ensure that each nail roll leaving the factory meets the highest standards in both size and quality, meeting customer requirements.
Photo 2: Nail roll size inspection process
The nail roll inspection process is carefully carried out using automatic measuring equipment to ensure that the size and tension of the roll meet the standards. Workers will also perform visual inspection and random tests to detect any defects. This helps to ensure that each nail roll leaving the factory from Kim Xuan is of the best quality, meeting customer technical requirements.
3. Testing the torsional strength of wire nails
Testing the torsional strength of wire nails is an indispensable step in the quality control process at Kim Xuan. Torsional strength is the ability of a wire nail to withstand a twisting force without deforming or breaking. This is especially important for nail products used in the construction industry and applications that require high load-bearing capacity.
The torsional strength testing process begins with selecting representative samples from production lots. These nail samples will be processed according to specified technical standards before being put into the testing machine. The testing machine will apply an increasing torsional force to the nail sample, while measuring parameters such as maximum torque, torsion angle and breaking force. The results of these parameters will indicate the torsional strength of the wire nail and its load-bearing capacity.
This torsional testing process is performed with high precision, ensuring that every nail meets the ideal strength requirements. Typically, the wire is twisted to an ideal number of 2.5 turns before it deforms or breaks. If any product fails to meet the standard, it is immediately discarded, ensuring that only the best quality products are produced.
Photo 3: Testing the durability of wire nail twist
Testing process:
- Prepare the test sample: Select a representative sample, process the test sample according to the standard.
- Install the test sample into the testing machine.
- Apply increasing torque until the test sample is destroyed or reaches the allowable limit.
- Record parameters such as maximum torque, twist angle, and destructive force.
- Number of twists: Each wire nail after being tested for twist will have an ideal number of twists of 2.5 turns. If any wire nail does not reach this number, the product will be rejected and not shipped.
4. Nail testing with a nail gun
The nail gun is one of the important tools in product quality inspection at the United Nail factory. This device is capable of accurately and quickly checking the technical parameters of each nail. However, to ensure the highest reliability, United Nail still maintains a random manual inspection process, combined with a nail gun to detect small errors that machines may not be able to detect.
The nail gun testing process includes testing the strength of the nail when it is shot into different materials. The machine will evaluate the accuracy of the nail head, the depth when the nail penetrates the material, and the ability to resist deformation when the nail is impacted. At the same time, workers will check by hand to ensure that the product meets the standards of shape, durability and other factors that the machine cannot determine.
To ensure the effectiveness of the nail gun, the company regularly maintains and calibrates the machine. Thanks to this, United Nail can ensure that every product before reaching customers is of the highest quality. Inspection workers are also well trained in inspection standards and use specialized tools to check for nail defects.
Photo 4: Inspection process with nail gun
Training workers: Inspection workers need to be well trained in inspection standards, how to use tools and how to recognize common types of errors.
Maintenance of machinery: Nail gun needs to be maintained periodically to ensure stable and accurate operation.
Update the process: Inspection procedures should be updated regularly to suit new requirements and new technologies.Ensure the best output quality
5. Check product packaging
Packaging is the final step in the quality control process at United Nail, but no less important. The packaging process must ensure that the product not only meets the internal quality standards but also meets the requirements for appearance and packaging on the outside. Each crate of nails after packaging will be carefully checked for quantity, weight, and packaging condition to ensure that the product is not damaged during transportation. Each crate of nails will be carefully checked for quantity, size, specifications, weight, and packaging condition.
Photo 5: Checking product packaging and information on the crate
This control process not only helps detect and eliminate defective products but also ensures that each crate of nails when delivered to customers meets the highest quality standards, meeting all technical requirements.
The quality control process plays a central role in ensuring the success of any product, especially in an industry that requires high precision and durability such as nail manufacturing. At United Nail, the QC process is not only a set of technical operations but also an important factor demonstrating the company’s commitment to customers and product quality.
From the initial stages such as nail stamping and dimensional inspection, to roll welding, torsional strength testing, and product packaging, each step is strictly carried out according to international standards. The combination of modern technology and high technical expertise of the staff at United Nail has helped the company control quality comprehensively, ensuring that not only the final product but also each nail meets the highest quality requirements.
In particular, the company always strives to improve and modernize the production process as well as quality testing equipment, in order to optimize production efficiency and minimize risks in output products. This not only helps to improve product reliability but also increases competitiveness in the international market.
Strict quality control at every stage helps United Nail build solid trust with customers, especially in industries with high quality requirements such as construction and heavy industry. Each nail product supplied to the market is not only the result of a combination of technology and engineering, but also a testament to United Nail’s dedication and responsibility to consumers.
Photo 6 Products are packaged according to export standards
In addition, United Nail products are regularly packaged according to export standards, ensuring that each crate of nails exported abroad meets strict requirements on quality and specifications. This not only helps enhance United Nail’s reputation in the international market but also affirms the company’s commitment to product and service quality.
With superior quality, competitive prices and strict quality control processes, United Nail nails have become the top choice of domestic and international businesses. The commitment to quality is not only a factor that helps United Nail develop sustainably but also creates the foundation for long-term cooperation with partners and customers around the world.
In the future, United Nail will continue to invest heavily in technology and quality control processes, constantly improving to bring the best products to customers. Come to United Nail to experience the quality of high-class nails, meeting all strict requirements and ensuring safety and sustainability for every project you are building.
Customer satisfaction is always the guiding principle in all our activities, and United Nail is committed to constantly striving to bring the best value to consumers.
United Nail Products Co.,ltd With outstanding quality, competitive prices and professional services, United Nail nails have been trusted by many customers. Come to United Nail to experience the quality of the products!