But they are easy to print.
而用3D印刷术却很容易解决这两个难题。
The GE process for making a transducer begins by spreading onto the print table a thin layerof ceramic slurry containing a light-sensitive polymer.
GE对加工换能器的方法是首先在印刷台上撒上薄薄的一层陶瓷粘土,其中混入一种光敏聚合体。
This layer is exposed to ultraviolet light through a mask that represents the requiredpattern.
然后用紫外线通过露光模板的光孔照射到印刷台的粘土层,以此塑造出需要的模型图案。
Wherever the light falls on the polymer it causes it to solidify, binding the particles in theslurry together.
光敏聚合体一经被紫外线照射就会立即变得坚硬,粘土中的粒子随即凝结固化。
The print table is then lowered by a fraction of a millimetre and the process repeated, with adifferent mask if required.
接下来,印刷台会以不超过一毫米的距离向下位移,然后重复整个上面这一过程,如果有必要,需要重新更换一个新的露光模板。
And so on. Once finished, the solidified shape is cleaned of residual slurry and heated in afurnace to sinter the ceramic particles together.
以此反复处理直到整个过程结束,再进行清理成模上的残余粘土,最后把成模放入熔炉,以低于熔点的温度进行焙烧,最终完成陶瓷粒子的凝固收缩聚合。
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