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Home> Industry Information> How to troubleshoot the failure of the injection mold?-part4

How to troubleshoot the failure of the injection mold?-part4

December 28, 2021

4. Movable template bending

When the mold is injected, the molten plastic in the cavity produces a huge back pressure, generally 600 ~ 1000 kg/cm2. Mold makers sometimes do not pay attention to this problem, and often change the original design size, or replace the movable template with low-strength steel plate. In the mold with ejector pin, the large span between the two sides of the seat causes the template to bend during injection.

Therefore, the movable formwork must be made of high-quality steel, with sufficient thickness, and low-strength steel plates such as A3 should not be used. When necessary, support columns or support blocks should be set under the movable formwork to reduce the thickness of the formwork and increase the load-bearing capacity.

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