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How to ensure the size of liquid silicone products after molding?

Release time:

2020-05-06 14:55

Source:

You know how to guaranteeLiquid silicone productsAfter molding the size?
 
What is the cause of the dimensional instability of liquid silicone products after molding? Is there any good method to control the liquid stateSilicone ProductsIs there no mistake in the size? Today, Xiao Bian will talk about it.How to ensure the size of liquid silicone products after molding.
                    
The size deviation of liquid silicone products after molding is a headache for many manufacturers, because it not only wastes time but also energy, so we need to improve and correct this error in time. So, how should we guarantee the size of the liquid silicone products after molding? According to the understanding of the relevant knowledge, there are mainly the following points:
                    
  1. Molding compound weight: If the rubber weight is discharged too much, the size of the liquid silicone product will be too large. If the rubber weight is discharged too light, the size of the liquid silicone product after molding will be too small.
  2. Mold temperature: when the molding temperature is too high, it will accelerate the vulcanization of the liquid silicone product rubber, resulting in the decrease of the fluidity of the liquid silicone product rubber in the molding mold, resulting in the small size and thick thickness of the liquid silicone product. On the other hand, if the molding temperature is too low, the size of the liquid silicone product is too large and the thickness is too thin.
  3. Vulcanization pressure: when the molding vulcanization pressure of liquid silicone products is too low, it will lead to the defects of liquid silicone products such as rubber shortage, high load, thick base thickness, short length, etc., while when the molding vulcanization pressure of liquid silicone products is too high, it will cause the defects of low load, thin base thickness, long length, etc.
                    
The method of controlling the size of liquid silicone products:
 

The solution is to strictly follow the production conditions confirmed by the samples in the molding production process. The technical parameters such as mold temperature, pressure, discharge, hardness, time, etc. cannot be changed at will. This requires a perfect operation guidance process and skilled operation staff. For liquid silicone products can be measured according to the specific requirements of its section, inner diameter size, outer diameter size. General detection tools are vernier caliper, ruler or tape measure, projection microscope and other optical instruments to measure.

 
The above is the content of this article, you now knowHow to ensure the size of liquid silicone products after molding.

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