Hygrade Casting will be closed from 20th December 2024 and re-opening again 20th January 2025. Merry Christmas & Happy New Year!
Hygrade Casting will be closed from 20th December 2024 and re-opening again 20th January 2025. Merry Christmas & Happy New Year!
Save time behind the bench with our consistent and controlled condition post processing services.
We provide optional comprehensive post-processing services designed to save you time, effort and money for an additional fee. The reason we charge these fees separately is to ensure you know exactly where your money is going.
Charged separately from our casting fees and metal processing fees, you can either have the raw casting on its own which is an abrasive free finish and has a dull look to it or you can choose our ultra-bright finish for an additional fee, furthermore you can choose to opt for a de-sprue service which also saves you further time and money.
You can select from any of the following post-processing options below. These post-processing services ensure that your castings are finished to the highest standards, with minimal effort on your part. Whether you need enhanced durability, improved malleability, or a perfect, bright finish ready for your jewellers to work on, we have you covered.
This process involves using magnetic pins with a proprietary lubricating detergent that brightens the castings whilst removing the raw top layer skin of the castings and provides a stunning bright finish to casted pieces, this process typically removes 2-3 microns of metal / 0.10-0.15grams on an average ring. Printing lines are still visible with this finish and does require manual finishing via bench work.
Our skilled workers uses precision Swiss made saw blades to carefully cut the sprue without compromising the casting’s profile. Then they move onto the profiling stage to seamlessly remove the remaining sprue and the support bumps using premium German made #400 emery paper (only sprue area and support bump areas will be touched). With this service, you will NOT be invoiced for the sprue and gold dust as we keep that (which is a further saving to you).
For clients seeking enhanced hardness and tensile strength in their gold castings (not recommended for Silver and Platinum), we offer low-mild hardening treatments. This process improves the durability of your pieces while maintaining a careful balance—avoiding the excessive brittleness associated with stronger hardening treatments, this process does change the grain structure of the metal. Our approach ensures a mild increase in tensile strength without compromising overall structural integrity.
The treatment is performed in a fully temperature-controlled environment, where your castings are heated to precise temperatures, held for the optimal duration, and rapidly cooled in our proprietary pre-chilled solution. This process ensures even and consistent results across every piece.
The opposite of hardening treatments, our annealing treatment softens castings to relieve internal stresses, enhancing malleability and making them easier to bend, shape, re-size and solder. This process increases ductility, ensuring your pieces are more manageable and versatile during work, this process does change the grain structure of the metal.
While many jewellers handle annealing on their own, however rose Gold and Platinum castings present unique challenges, including reliance on temperature guesswork, higher gas consumption, oxidation and a greater risk of damaging ceramic heating plates. Our temperature-controlled process eliminates these issues, delivering precise and reliable results through a carefully timed temperature controlled heating and cooling method.
