MANUFACTURING – 3D PRINTING (L / METAL / BINDER JET) CALCULATOR
Post Sintering Shrinkage
A precise tool.
What is the Post Sintering Shrinkage & How does it work?
Binder jetting produces a green part that is later sintered to achieve full density. During sintering the particles fuse and the part contracts, a phenomenon known as post‑sintering shrinkage. The amount of shrinkage depends on material chemistry, powder packing density, and the peak temperature of the sintering cycle. For engineering design it is essential to predict the final dimensions so that the green model can be oversized appropriately. Linear shrinkage is typically expressed as a fraction of the original green dimension and is applied uniformly in all three axes for isotropic materials. The calculator below uses material‑specific shrinkage factors derived from empirical data to estimate the sintered part size. By entering the green dimensions and selecting the material, users obtain a quick approximation of the final part geometry.
L_{sintered}=L_{green}\\times(1-s)
s = linear shrinkage fraction
Parameters
Result
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Frequently Asked Questions
What is post-sintering shrinkage?
Post-sintering shrinkage is the contraction that occurs during the sintering process when particles fuse, reducing the part’s dimensions.
How does powder packing density affect shrinkage?
Higher powder packing density typically results in less post-sintering shrinkage because there is less space for particles to move and contract.
Why is predicting final dimensions important in binder jetting?
Predicting final dimensions allows engineers to oversize the green model appropriately, ensuring the part meets the required specifications after sintering.
What factors determine the amount of shrinkage during sintering?
The amount of shrinkage is determined by material chemistry, powder packing density, and the peak temperature of the sintering cycle.
How is linear shrinkage typically expressed?
Linear shrinkage is typically expressed as a fraction or percentage of the original dimensions.
Can post-sintering shrinkage be minimized?
Yes, post-sintering shrinkage can be minimized by optimizing material chemistry, powder packing density, and controlling the sintering temperature profile.
What is the impact of peak temperature on shrinkage?
Higher peak temperatures during sintering generally lead to greater shrinkage as particles fuse more thoroughly and contract more significantly.
Results are for informational purposes only and do not constitute professional advice.