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How to process polyethylene prototype

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The polyethylene prototype is mainly processed by the method of silicone vacuum casting, and the main advantages are short processing time and low cost;In addition to making polyethylene prototypes, we can also make other materials, such as ABS, PP, PC, PMMA, POM, silicone, etc.Generally, a set of silicone molds can only be used for about 10 times and cannot be used. Reuse can cause deformation and large size errors.

First of all, we need to make an original before making the silicone mold, which can be made by cnc machining or 3D printing.

Then make the silicone mold: After the original is ready, start making the silicone mold. After the silicone mold is dried for eight hours, cut the silicone mold open, and then we can take out the prototype. At this time, the silicone mold is ready.

Final injection: Inject the liquid material into the silicone mold, and it will be completed after drying. The service life of the silicone mold is about 10 times.

The E-make team has more than 30 years of combined experience in prototype machining, CNC manufacturing, vacuum casting service.And has a high-level technological group of 25 peoples.The processing quality of the rapid manufacturing is stable, the processing precision is high, and the appearance is exquisite.

If you need any help,please feel free to contact us!

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Vacuum casting ABS UL94 V0 prototype

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Vacuum casting ABS UL94 V0 prototype

The vacuum casting greatly reduces the development cost, cycle and risk of the product. More than 20 pieces of the same product can be made using a silicone mold. This makes the vacuum mold become one of the commonly used prototype manufacturing methods in industrial production.

The vacuum mold refers to the use of the original prototype to make a silicone mold in a vacuum state, and use PU, transparent PU, POM-like, ABS materials for casting in a vacuum state,
So as to clone the same copy as the original prototype.
There are many materials for vacuum casting, and it can also be made of fireproof materials. Can withstand a high temperature of 180 degrees. So how do we produce fire-resistant ABS prototypes?

1,The first is to check the drawings to evaluate the production. Because the shrinkage rate of the vacuum casting is relatively large.In order to ensure the accuracy of the parts, the size of the parts needs to be enlarged according to the probability of shrinkage before production.

2,3D-Printed master mold.

3Make silicone mold.

4,Put the liquid fireproof ABS into the mold and take out the product after cooling.

 

 

 

 

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The processing of vacuum casting prototype

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The processing of vacuum casting prototype

 

We usually use CNC maching to processing prototype ,but the CNC tooling is hard , can only  process hard material.So if customer need to make rubber product ,we will not be able to use CNC machining .In that time ,we will use vacuum casting to process.vacuum casting is the best way to make rubber product in small quantity.So how vacuum casting to process a prototype?

1,programming.

2,make a mold.

3,Pour the liquid soft rubber material into the mold and take it out after cooling.

4,surface finish:

If those rubber product need to do color,there have two way to make color.one is painting after the product out of mold .Another is the color and the product out of mold together.This mean mix the color powder andrubber materials required by the customer into the mold, and take them out after cooling.

At this time, the product comes with its own color when it comes out of the mold. But the price will be more expensive than painting.

The surface of the vacuum casting product is smooth, and generally does not need manual processing. Which can save manual processing time.

If you have rubber products to make, please contact E-make. We are a rapid prototyping manufacturer in China, with over 10 years of experience in CNC,3D printing, vacuum casting and injection molding die-casting prototypes. We can quickly and cheaply produce high quality parts and prototype for you.

The Difference Between CNC Machining And Urethane Casting

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What is cnc machining and urethane casting?

CNC is mean “Computer Numerical Control”.

CNC machining is a technology that machined the parts by removing layers of the material to shape the parts’ structure.


Urethane casting also called vacuum casting and polyurethane casting,is a process that making parts from a mould.It is a low cost way for making low volume plastic parts.

Difference

1.The way of machining.
CNC machining is making the parts one by one via CNC machine.
Urethane casting is making a mould according the original parts firstly,and then duplicate parts by the mould.

2.The materials.
Plastic and metal parts can be make by CNC machined.Also,CNC machining is using the pure plastic,such as pure ABS.
But only the plastic parts can be make by urethane casting.Also,Urethane casting is using the mixed plastic,not the pure plastic.Such as similar ABS,not pure ABS.

3.The processing time.
Generally,CNC machining takes more time than urethane casting.

4.The precision.
The precision of CNC machining is 0.01-0.1mm,but the precision of urethane casting is 0.1-0.2mm.We can see that the precision of CNC machining is better.

5.The price.
The price of CNC machining is higher than urethane casting if machined same parts.

Which technology is better all up to What kind of parts you need !