The product is not finished in manufacturing. Factory-manufactured products are always shipped after a process called “quality inspection”. Quality inspection is an essential process in the quality control of the manufacturing industry. This is because if the product you make is a mixture of defective products and quality that does not meet the standards, it can lead to complaints and serious accidents. If such a thing happens, the image and trust of the company may be damaged at a stretch. So here we will introduce the work of “quality inspection service” which is important in the factory.
What is Quality Inspection in the Manufacturing Industry?
Quality inspection in the manufacturing industry refers to the process of evaluating whether the quality of products and parts conforms to the regulations in manufacturing. Quality inspection is an important process for determining whether a product or part is complete or incomplete or defective.
The product is completed only after the quality check is performed according to the inspection process and certified as meeting the standards. Just because you go through processes such as processing raw materials and assembling parts, it does not mean that it will be completed immediately.
In manufacturing, in order to meet customer requirements, it is common to establish acceptance standards in all items such as shape, structure, dimensions, and color. In addition, depending on the characteristics of the product and parts, it is possible to assume any changes that may occur, such as scratches, dirt, rubbing, and irregularities. These standards are used to determine whether a product or part is manufactured.
In recent years, there has been a tendency to perform quality control even in the manufacturing process, which is the stage before the inspection process, in order to reduce costs. This is because the idea is that it is more efficient and cost-effective to reduce nonconformances at the manufacturing site rather than determining nonconforming products in the quality inspection process.
Why Use Quality Inspection Services?
Quality inspection is a business process that checks the quality of manufactured products and services. The subject of quality inspection is mainly divided into two types of appearance and function, and checks whether it conforms to established standards and standards.
The reason for quality inspection is to prevent defective products caused by possible defects or mistakes in the manufacturing process from appearing on the market. If you sell products that have a significant damaged appearance or that do not meet their functions, the company will lose the trust of its customers. By eliminating defective products through quality inspections, it is possible to stably provide excellent products to customers.
If a defect is found by quality inspection, it will be an opportunity to discover problems in the manufacturing process. Quality inspection also plays an important role in quality inspection by providing feedback on the evaluation of manufactured products and leading to technological improvement and problem solving.
Three Ways of Quality Inspection
When performing quality inspections, it is essential to choose the inspection method depending on the characteristics of the product and the manufacturing process. There are three main types of quality inspection classification: production process, determination method, and implementation method.
Here, we will introduce the characteristics of each inspection method and the specific inspection method:
1. Production Process
In quality inspection in the production process, inspections are carried out on the production line from raw material receipt to product shipment. There are three types of inspection methods.
When purchased raw materials and parts are received into the manufacturing plant, we confirm whether the quality is suitable for manufacturing. Acceptance inspection is an important inspection item because poor raw material quality affects the processing process and product quality.
Check whether semi-finished products that have gone through the process in the factory can proceed to the next process. It is process control so that internal defects generated in the process are not flowed to the subsequent process, and high expertise in the work in the process is required.
It is determined whether the manufactured product is clean and meets the established standards. Some companies are sometimes called shipping inspections, and this is an inspection performed in order not to cause external defects in the product.
2. Judgment Methods of Quality Inspection
For quality inspection, it is also necessary to decide “what data to measure to determine good and defective”. There are three main judgment methods for quality inspection.
- Counting extraction inspection
A certain number of samples are extracted from the production lot, and the number of nonconforming products is measured to determine good and defective products. 100 balls are extracted from the lot, 5 or less nonconforming products are good, and when there are 6 or more, it is a bad way.
- Weighing and Removal Inspection
Samples are randomly extracted to determine good and bad if the weighing values meet the criteria. If the standard for good use is 100 g or more, the product weight randomly extracted is 102 g is good and 97 g is bad.
- Sensory Inspection
We use human sensations to determine the quality of our products. This inspection is conducted mainly for food, fragrances, cosmetics, etc.
3. Implement Quality Inspection
How you perform a quality inspection is directly linked to the time and cost of inspection. There are four implementation methods.
- 100% inspection
All production lots are inspected. This is an inspection method performed in cases where no defective products are allowed.
- Extraction inspection
Extract a part from the production lot and think of some inspection results as inspection results across the lot. It saves time and money compared to 100% inspection.
- Indirect inspection
For raw materials purchased from other companies, acceptance inspections are omitted as a pass by confirming the inspection results conducted by other companies.
- No test inspection
Omit the inspection item if you trust that the quality is reliable. It is a method mainly adopted in in-process inspection and final inspection.
Advantages of Conducting Quality Inspections
When conducting quality inspections, know the main benefits:
- Preventing the outflow of defective products
Quality inspections make it easier to spot defective products in the factory, preventing defective products from flowing out to the market. In modern times, information dissemination means such as SNS are developed, and if defective products are leaked, information may be spread more than the fact. Quality inspections that can prevent the outflow of defective products are an important initiative to protect corporate profits.
- Earn the trust of your customers
Customers buy in the hope that the product can be used without problems. Not producing defective products is critical to gaining the trust of your customers. Building relationships of trust with customers is an essential element in creating repeat customers, and it is a key point that greatly affects the company’s sales.
- Operators and non-sales employees can acquire specialized knowledge
Employees know about the processes they are involved in, but in many cases they do not know the entire process. In quality inspection, it is necessary to be aware of the processes that exist before and after and the flow of commercialization, so you can acquire specialized knowledge through quality inspection education.
Benefits To Implementing Quality Services
If you want to perform quality inspections, we recommend the introduction of an inspection service. There are not only advantages but also disadvantages to human quality inspection. If you want to perform quality inspections with fewer disadvantages, we recommend that you introduce an inspection system that can inspect quality. There are three advantages to implementing an quality inspection service.
- Productivity improves
The inspection system can accurately and automate inspections simply by setting up and operating the inspection equipment. You don’t have to spend time with people to perform quality inspections, which increases the productivity of the entire company.
- Labor costs for quality inspection can be reduced
With an inspection system in place, there is no need to staff the quality inspection professionally. There is no need to establish a phased inspection system for accuracy, and labor costs for inspection can be reduced.
- There is no outflow of defective products due to human error
Since the machine performs quality inspections in the inspection system, there is no outflow of defective products due to human error. There is no loss of vision due to fatigue or aging like a human, and it is possible to perform high-precision quality inspections simply by performing occasional maintenance.
Inspection systems that can perform reliable quality inspections are used in a variety of fields. In order to prevent the outflow of defective products and provide high-quality products to customers, it is recommended to introduce an inspection system.