Tel：0512-65685025
Fax：0512-65650370
Email：sales@hanke-nmc.com
Website：http://www.hanke-nmc.com
Add: Block 7, No.19, Xingnan Road, Wuzhong, Suzhou City, Jiangsu, China
Name：Rebecca Dong
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Technical |
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Injection mold processing surface quality and inspection requirements. |
The raw materials must be dry and dry according to the technical requirements, and there should be no moisture, otherwise the appearance of the injection will have a silver lining.
(2) the injection temperature, pressure, time conform to the technical parameters, such as card requirements, should strictly control the injection speed, injection speed too rapidly will cause the poor adhesion of the coating film and magnesium substrate (chrome injection speed control between 15% and 35%)
In the process of injection molding, it is not possible to use the release agent, especially the mold containing silicone oil, otherwise it will affect the adhesion of the coating.
After the middle stop, the material should be cleaned to prevent the material from being broken in the screw, and the product is brittle.
The surface of the parts that are molded by injection moulding shall not be polished and polished to prevent the adhesion of the coating to the substrate.
In the process of injection molding, it is necessary to bring cotton clean gloves to prevent the appearance of the product from being contaminated.
All landowners internal stress control: goods are not allowed to exist large internal stress, should be the examination of the internal stress after injection molding (using glacial acetic acid soaking method) (glacial acetic acid soaking in thick parts in 1 to 2 minutes, take out water flushing, then observe the appearance for white 】
Size control: the length, installation foot or installation hole is in accordance with the drawing and measurement requirements.
Quality inspection requirements: 1, appearance appearance should be smooth lubrication, uniform color, shape, stuffing, deformation, cracking, color separation, no pitting, shrinkage, activity, mark, silver grain, oil stain, clean cut, weld line is less than the limit samples. [check for a piece with clean cotton gloves.]
2. Appearance quality requirements: the appearance quality is in common with the seal sample, and the end part prevents sharp corners, flying edges and trimming scraps; Marginal level, no gap, volume; No deformation, blanking and cracking of the feet; Install hole without flying edge, gap and other shortcomings. [it is necessary to bring clean cotton gloves and prevent the appearance of dirty parts.
3. Packaging requirements: the packaging conforms to the specification requirements to prevent the appearance of scratches.
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