# Nonstandard Precision Machining # Turning processing The company’s quality requirements for hardware parts

1. Material quality

1. The hardware materials selected must comply with relevant national standards and industry specifications, and have corresponding material certificates and inspection reports.

2. The material should have good strength, hardness, toughness, corrosion resistance and wear resistance to adapt to the use environment and life requirements of the product.

2. Dimensional accuracy

1. The size of the hardware should be processed strictly in accordance with the requirements of the design drawings, and the dimensional tolerance must be controlled within the specified range.

2. For critical dimensions and matching dimensions, strict inspection and measurement should be carried out to ensure that their accuracy meets the assembly and functional requirements of the product.

3. Appearance quality

1. The surface of the hardware should be flat and smooth, without obvious scratches, dents, deformations, burrs, oxidation and other defects.

2. The surface treatment should be uniform, firm, consistent in color, and comply with relevant appearance standards and customer requirements.

4. Performance requirements

1. The mechanical properties of hardware, such as tensile strength, yield strength, elongation, etc., should meet the design requirements and usage conditions.

2. Corrosion resistance, wear resistance, fatigue strength and other properties should pass corresponding tests and inspections to ensure that they remain stable during the service life of the product.

5. Reliability

1. Under normal use conditions, hardware should have reliable connection, fixation and transmission functions, and should not be loose, broken or failed.

2. For hardware subjected to repeated loads and dynamic loads, fatigue life testing should be performed to verify its reliability.

6. Logo and packaging

1. Each piece of hardware should be clearly marked with product model, specification, batch, production date and other information to facilitate traceability and management.

2. The packaging of hardware should be able to effectively protect the product from damage and corrosion during transportation and storage.

7. Quality inspection

1. Establish a complete quality inspection system and conduct strict inspection and testing of raw materials, production processes and finished products of hardware parts.

2. Use advanced testing equipment and methods, such as three-dimensional coordinate measuring instruments, hardness testers, spectrum analyzers, etc., to ensure the accuracy and reliability of inspection results.