Quality Control Management

1.Understanding Customer Needs

Based on the customer's specific needs, product or service requirements, and production costs, we develop a reasonable pricing strategy, typically considering the following factors:
•According to Drawing Requirements:
Cleary understand the specific specifications, functions, dimensions, quantities and delivery deadlines required by the customer for the product or service.
•Customized Products or Services:
Provide professional solutions or suggestions based on the customer's specific needs.
•Special Requirements:
For special specifications or products that require inspection, provide test reports or certification documents that meet the required standards.

2.Pre-production Assessment

Pre-production evaluation meetings help ensure that the product meets the following requirements:
•Mass Production: It must comply with all requirements and standards, including confirming the machining processes, requirements, measurement methods, and sampling frequency, among others.
•Reorders: Through the "Quality History," we can trace the product's quality inspections, control, and improvement plans throughout the past production processes. By recording each inspection, test, and improvement, we ensure that every product meets the required standards.

3.Procurement Requirements

Through pre-production evaluation meetings, we can effectively confirm the various resources and materials needed during the production process, including tools, lubricants, and materials. The confirmation of these resources is crucial for ensuring the smooth progression of the production process. The specific steps can include the following aspects:
•Tool Selection and Preparation: Based on product design and production process requirements, select the appropriate tools, such as turning tools, milling cutters, drills, etc. During the meeting, the tool specifications, condition, and whether replacement or replenishment is needed will be checked to ensure the tools' suitability and good condition.
•Lubricant Confirmation: Cutting oils or coolants are required during the production process to reduce tool wear and improve machining accuracy. In the evaluation meeting, the appropriate lubricants will be selected based on the processed materials and the process requirements, such as coolants, lubricating oils, rust preventatives, etc., and ensure that the oil quality meets the necessary standards.
•Material Inspection and Preparation: During the meeting, we will confirm whether the materials required for production are available, and check the quality and specifications of the materials to ensure they meet production requirements.
Through this pre-confirmation process, we can effectively reduce risks during production, improving both production efficiency and quality.

4.Production Manufacturing Stage**

To ensure product quality, smooth processes, and production efficiency, it is essential to control multiple key indicators and record all data for future analysis to improve efficiency.
•Production Planning
This includes the management of resources such as materials, equipment, and labor, as well as the development of corresponding production goals, schedules, and priorities. The purpose is to ensure that products are produced on time, while meeting the expected quality standards.
•First Article Inspection (FAI)
First article inspection involves a detailed examination of the first produced item in the manufacturing process to ensure it meets design requirements and quality standards. This step serves as the initial verification of the entire production process and is crucial for preventing defects and ensuring consistency.
•In-Process Inspection
The QC plan, established during the Pre-production Assessment, defines the monitoring intervals for each dimension of each item, such as inspections every 2 or 4 hours, as well as the measurement instruments to be used. During production, regularly or random sampling inspections are conducted to monitor quality variations, detect issues early, and make necessary adjustments.
•Capacity Utilization
The ratio between actual production output and maximum production capacity within a given time frame. This metric evaluates whether the production system is operating at its full potential and helps identify areas for adjustment or improvement when necessary.
•Tool History
A detailed record of the tool's usage, wear condition, maintenance, and replacement schedule. The purpose is to extend tool lifespan and prevent production interruptions caused by tool failure.

5.Post-Processing

After the initial production process, additional treatments are carried out based on customer requirements to enhance or adjust the product’s appearance, hardness, or functionality. These processes typically include coating, heat treatment, and surface treatment. Each post-processing step is documented for quality traceability, issue analysis, and corrective measures. This ensures that any potential issues can be quickly identified and resolved.

6.Inspection

Inspection is conducted at multiple stages, including material inspection, inspection after post-processing, and final product inspection. Each stage is critical to ensure quality control, preventing defective materials from entering production and defective products from being shipped. Inspection data is meticulously recorded for traceability. If defects are identified, the issue can be traced back to the production line to assess tool lifespan and optimize machine programs for continuous improvement.

7.Inventory Entry

After passing inspection, materials, parts, or finished products are registered, categorized, and entered into inventory. This ensures effective and secure material and products management, facilitating allocation and usage for subsequent production processes.

8.Shipping

Before shipment, all products must undergo a final inspection to ensure the quality meets the standards. This includes verifying dimensions, appearance, and functionality. Packaging is clearly labeled with product name, quantity, date, and an inspector’s approval stamp. All necessary shipping documents (e.g., invoice, packing list, export declaration, inspection report) must be complete and match the product quantity and specifications.
A quality system is crucial for ensuring that products and services meet customer requirements and standards. To establish and maintain an effective quality system, it’s essential not only to have complete standards and processes but also to support them with skilled employees and the stable operation of equipment.

9.Equipment and Measuring Instrument Management

The management of equipment and measuring instruments is crucial for production, efficiency, and compliance. To ensure the stability, precision, and reliability of equipment and instruments, regular maintenance and calibration must be performed. These management measures not only extend the lifespan of equipment and instruments but also improve the accuracy and efficiency of the production process.
•Periodic Maintenance
Based on the operating conditions of the equipment and instruments, a regular inspection and maintenance plan is developed. Necessary maintenance tasks are carried out according to the scheduled time and recorded for future reference.
•Calibration
The process of checking the accuracy of measuring instruments and equipment to ensure that their measurement results meet the required precision standards. Prompt detection of instrument misalignment helps effectively prevent the production of defective products.

10.Employee Training and Development

Each position has a specific job description, ensuring that every employee is clear about their tasks and goals.
The required skills for each role are quantified, and at the beginning of each year, the skills and abilities of employees are reviewed. An annual training plan is then created, and the effectiveness of the training is evaluated upon completion.
Heng Chang encourages employees to continue learning and maintain a positive attitude toward learning. Through staged tasks and performance evaluations, the company enhances employees' sense of achievement in their roles. Regular promotion of corporate culture strengthens the sense of responsibility among all employees.