1. Material Cutting
   A sawing machine is used to cut standard-sized steel plates into rough blanks of the required dimensions.

2. Rough Milling (Face and Side Milling)
   The six faces of the blank (primarily the reference surfaces) are milled flat on a gantry milling machine, forming the basic outer dimensions and removing most of the machining allowance.

3. Drilling of Lifting Holes/Process Holes
   Holes for screws (lifting holes) and reference pin holes are drilled on a drilling machine for handling, positioning, and referencing in subsequent steps.

4. Rough Cavity Machining (Roughing)
   A roughing machine or gantry milling machine is used to preliminarily machine the mold cavity, guide pillar/bushing holes, return pin holes, and other structural features, leaving a uniform finishing allowance for all areas.

5. Heat Treatment (Quenching and Tempering)
   Key Step – The roughly machined plate undergoes quenching and high-temperature tempering. This relieves internal stresses from rough machining, uniformly enhances the steel’s comprehensive mechanical properties (strength, toughness), and provides a stable material condition for subsequent finishing.

6. Precision Grinding of Reference Surfaces
   After heat treatment, slight deformation occurs. This step involves grinding the two most critical reference surfaces (typically the A and B faces) on a precision grinder to achieve high flatness, surface finish, and accurate thickness, establishing a unique and precise positioning reference for all subsequent finishing operations.

7. Finish Milling
   Using the ground reference surfaces for positioning, the four sides of the mold cavity, parting surface, shut-off areas, slider slots, etc., are finish-milled on a gantry or precision milling machine to ensure perpendicularity, parallelism, and dimensional accuracy meet drawing requirements.

8. CNC Machining
   For complex shapes that cannot be achieved by finish milling (such as freeform surfaces, deep cavities, 3D runner systems, angular pin holes, etc.), computer programming is used to perform precision milling on a machining center (CNC).

9. Drilling and Tapping
   All screw holes, ejector pin holes, waterline holes, guide pillar holes, etc., are drilled, followed by tapping. This step is typically performed on a high-precision radial drill or CNC drilling machine.

10. Bench Work
    Manual finishing is carried out, including chamfering all edges, deburring, engraving part numbers in specified locations, assembling standard components like guide bushings and dowel pins, and conducting waterline flow tests.

11. Final Inspection
    All critical dimensions, hole position accuracy, and flatness are fully inspected using tools such as coordinate measuring machines (CMM), height gauges, and calipers to ensure compliance with the design drawings.

12. Assembly and Packaging
    All components, including the front and rear mold cavities, guide pillars, return pins, and ejector plates, are cleaned, assembled, coated with anti-rust oil, fastened, and packaged for shipment.

Hello, we are pleased to introduce Changhui Company.

• Employs over 100 staff, establishing a solid talent foundation.

  
  

• Includes an experienced engineering R&D and technical team, providing full-process professional support for projects.

  
  

• Equipped with over 60 production and processing machines, including 35 advanced CNC machining centers.

  
  

• Large machining centers offer powerful capacity: maximum travel of X-axis 3500mm, Y-axis 2500mm, Z-axis 1500mm.

  
  

• Possesses specialized equipment like deep-hole drilling machines capable of processing water lines up to 1450mm deep, excelling in handling complex structures.

  
  

• Over 30 engineering R&D technicians and over 60 CNC technicians ensure professional guidance from design to machining.

  
  

• Average monthly output exceeds 8 million, possessing strong large-scale delivery capability to ensure stable lead times.

  
  

1. Premium Materials: We use customized mold steel, characterized by high hardness, corrosion resistance, and excellent surface finish. All steel materials undergo a 90-day natural aging process to relieve internal stress before production, followed by strict spectroscopic and flaw detection testing, ensuring quality from the source.

   
   

2. Precision Guarantee: The combination of advanced equipment and a professional team ensures the machining precision of the mold base, thereby guaranteeing the final product's molding quality.

   
   

3. Stable Delivery: Large-scale production capacity and a mature supply chain management system ensure timely order fulfillment.

   
   

4. Expertise in Complex Structures: Leveraging equipment like deep-hole drilling machines, we are particularly adept at handling the complex cooling channel systems in plastic floor mat mold bases.