Briefly introduce the advantages and disadvantages of mechanical polishing, the steps and processes of polishing, and the selection of polishing materials in the polishing process.

A: The advantages of mechanical polishing:

1: The consistency of polishing is good, the lines of different sizes can be installed in disorder, and it has good interchangeability;

2: The polished lines have no waves, and the smoothness and straightness of the surface are very good;

3: Products used to polish the rotating body have good arc and high luminosity;

4: High efficiency;

5: Reduce the labor intensity of grinding and polishing operations;

6: Improve the working environment of grinding and polishing;

7: Suitable for assembly line production;

B: Disadvantages of mechanical polishing:

1: The initial investment is relatively high, and a certain amount of equipment, work site, and forming grinding wheel are required;

2: Lack of certain flexibility, only suitable for large-volume products;

3: Corresponding forming tools should be made for different line types, and a series of grinding wheels such as rough grinding, fine grinding and polishing are indispensable for the tool;

4: It is easy to break when grinding and polishing slender lines;

5: The forming wheel for grinding and polishing should be produced by a professional manufacturer, and the precision of the forming wheel is relatively high;

6: The brilliance of the polished lines is not very high, and there will be traces of grinding and polishing traces on the surface of the lines that affect the appearance of the product. This is the biggest shortcoming in the mechanical polishing and polishing of the lines, and it is also a problem to be solved;

7: Not suitable for sanding fragile stone.

C: Steps and processes of grinding and polishing:

1: Check whether the shape of the product conforms to the shape of the production process processing sheet, and then enter the grinding and polishing process after it is qualified;

2: Before grinding and polishing, make up the glue according to the condition of the material, and then polish and polish after the glue is finished;

3: First, draw a single piece of line for rough grinding, leave 0.5mm of fine grinding and water grinding allowance during rough grinding;

4: Splicing: Splice the lines to be polished according to the installation drawing, and select and deploy according to the color of the line surface to ensure good color and pattern effects. After the line water mill 500# is numbered uniformly according to the requirements of the installation drawing, and then disassembled and polished, this will not cause the polished lines to be concave and convex at the interface;

5: When there is a misalignment at the interface, the polishing of the transition section should extend the distance, the longer the better, and use a ruler to check the straightness when polishing;

6: The polished lines can only be shipped after passing the quality inspection;

7: Knack for polishing and polishing special-shaped crafts to improve luminosity and reduce waves:

D: Choose a good polishing material;

1: When grinding and polishing, after each number of abrasives or abrasive discs are polished and polished, the polished surface of the polished surface should be carefully checked, and the traces generated by the previous abrasive should be covered after the last grinding number;

2: Pay attention to the control of the water volume when grinding and polishing, the lack of water is easy to cause the burnt surface of the bright surface;

3: Stretch as long as possible along the line element line direction during grinding and polishing, the longer the better, so as to avoid the generation of ripples;

4: The speed of polishing should be fast;

5: Use high-speed grinding and polishing electric tools;

6: It is best to use a forming knife to process large quantities of lines for grinding and polishing. This can reduce the workload of rough grinding and ensure that the quality of the lines after rough grinding is good and the shape consistency is good.