Metal grinding and polishing process

1. Before polishing, check if the polishing allowance is sufficient, and the polishing amount should not exceed the reserved amount:

The polishing amount of the ground surface after grinding should not exceed the reserved amount by 0.05-0.06mm;

The polishing amount of unground surfaces, electro etched or wire cut surfaces cannot exceed the reserved amount by 0.08-0.1mm;

The single-sided and deep polishing amount of the reinforcement position cannot exceed the reserved amount by 0.03-0.08mm.

2. When operating with a polishing machine, high concentration is required to prevent grooves, excess, and prolonged processing in the same area;

3. After each polishing, it must be cleaned with a whiskey cloth before proceeding to the next step of polishing;

4. After each polishing, it must be wiped clean with cotton or soft paper before proceeding to the next step of polishing.

5. Before polishing the mold, first determine the machining program:

Based on different surface conditions and roughness, extract the appropriate starting sequence and required sequence of processes and tools (specifically diamond files, # sandpaper, oilstone)

Determine the usage range of electric tools and grinding tool heads based on the geometric shape of the mold cavity, basic roughness, and process requirements, in order to achieve targeted processing

6. Attention should be paid to the polishing of the sealing surface, especially the impact of special identification symbols on the parts and the sealing surface should not cause rounded corners or collapse;

7. The polishing area requires a clean environment, and attention should be paid to the protection of the polished surface during the polishing process;

8. Some parts that need to be polished together after assembly are not allowed to be polished separately;

9. After polishing, the polished surface should be self inspected and sent for inspection, and anti rust oil should be sprayed and protected to prevent scratches and dents;

10. All kinds of oilstones, sandpapers, stainless steel polishing paste, grinding wax, and diamond files produced by Tianjin Ruida Xinhua Polishing Materials Co., Ltd. must be placed in specialized tool boxes with corresponding labels according to their models and specifications.