• 2023-09-04
• 454
• 5 Comments

Matters needing attention for injection mold polishing

Injection mold polishing has two purposes; One is to increase the finish of the mold, so that the surface of the product of the mold is smooth, beautiful and beautiful, and the other is that the mold can be easily demoulded, so that the plastic is not stuck to the mold and can not be taken off.

The matters that should be noted for injection mold polishing are as follows:

(1) When the new mold cavity begins processing, the surface of the workpiece should be checked first, and the surface should be cleaned with kerosene, so that the oil stone surface will not stick to the dirt resulting in loss of cutting function.

(2) The rough grain should be studied in the order of first difficult and then easy, especially for some difficult dead corners, the deeper bottom should be studied first.

(3) Some workpieces may have multiple pieces pieced together, to first research the coarse grain or fire pattern of a single workpiece, and then all the workpieces are pieced together until smooth.

(4) The large plane or side plane of the workpiece, use the oil stone to remove the coarse grain and then use the flat steel sheet for light transmission detection, to check whether there is uneven or reverse situation, such as reverse will lead to the release of the workpiece or the workpiece strain.

(5) In order to prevent the attention of the mold workpiece research out of the reverse or there are some laminating surface need to be protected, you can use the saw blade paste or sandpaper attached to the side, so that the ideal protection effect can be obtained.

(6) Pull the mold plane before and after, and put the handle of the oil stone as flat as possible, not more than 25°; Because the inclination is too large, the force is thrust from top to bottom, which can easily lead to a lot of rough wrinkles on the workpiece.

(7) If the surface of the workpiece is polished with copper or bamboo pieces pressed with sandpaper, the sandpaper should not be larger than the tool area, otherwise it will be rubbed where it should not be.

(8) The shape of the grinding tool should be close to the surface shape of the mold, so as to ensure that the workpiece is not deformed.

If you do the above points, then the appearance of injection mold polishing will be very beautiful.