There are a number of points to be aware of when dealing with metal 3D printers.
In this article, we will introduce some of these points of caution based on past examples from our company.
Deformation of base plates and moulded parts
Metal 3D printers use lasers to sinter metal powders to form shapes.
In the process, the base plate is also subjected to temperature changes, which can induce deformation.
As it is currently difficult to predict the amount of deformation, a thickness allowance is made at the base plate on site to allow for warping deformation.
However, if deformations exceed the allowable amount, additional welding is carried out and cutting is carried out again.
The image above shows a deformed base plate, which was additionally welded and then flattened by cutting.
The problem of deformation is very troublesome and not only requires post-processing, but also
The fixing bolts of the base plate break or come off during modelling.
The machine stops due to contact between the recoater and the moulded object.
The machine stops when the recoater comes into contact with the object to be moulded.
For this reason, we have tried and tested various laser conditions and base plate materials to ensure that the machine can be used in the best possible way.
We have made several trials and errors in selecting the laser conditions and base plate material, and have reached the point where metal optical modelling products can be used as nesting elements for mass-produced moulds.
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