Hardware parts, English name Hardware Parts or Metal Parts. Traditional hardware parts, also called small hardware, hardware accessories. It refers to various metal appliances made of iron, steel, aluminum and other metals through physical processing such as forging, calendering, cutting and so on. Hardware parts include mold hardware parts, mechanical hardware parts, daily hardware parts, window hardware parts, ship hardware parts, construction hardware parts, aerospace hardware parts and security products. Most of the small hardware products are not final consumer goods. They are used as supporting products for industrial manufacturing, work in progress and tools used in the production process, etc. Precision parts processing Only a small part of daily hardware products are tool consumer goods necessary for people‘s lives.

　　Technical requirements for precision parts processing in Shenzhen:

　　1. Parts remove oxide scale.

　　2. On the machining surface of the parts, there should be no scratches, scratches, or other defects that damage the surface of the parts.

　　3. Remove burr flash.

　　4. After quenching and tempering treatment, HRC50~ 55.

　　5. Parts are quenched at high frequency, tempered at 350 to 370 degrees Celsius, and HRC40 to 45 degrees Celsius.

　　6. Carburizing depth 0.3mm.

　　7. Perform high temperature aging treatment.

　　8. Precision parts machining without shape tolerances shall comply with the requirements of GB1184-80.

　　9. The allowable deviation of the unmarked length size is 0.5mm.

　　10. The tolerance band of the casting is symmetrical to the basic dimensional configuration of the rough casting.

　　11. Unfilled fillet radius R5.

　　12. Unnoted chamfers are 245.

　　13. Acute angle inverted.

　　14. Each seal must be soaked in oil before assembly.

　　15. Assembling rolling bearings allows the use of oil heating for hot loading, and the temperature of the oil shall not be allowed