At Qualitetch, we etch brass for a range of uses from signage to Jewellery and screening cans.
Brass is a metal alloy consisting of copper and zinc, with differing variations of the metal made by changing the proportion of the two elements.
Due to its gold or bronzed appearance, Brass is a popular metal to use in aesthetic or creative art projects, but also used for many modern practical engineering applications such as, EMI RFI or EMC screening cans through to various musical instruments components.
Through our Photo Chemical Etching process, we are able to etch brass for a range of different uses. The metal will remain burr and stress-free, retaining all of its properties, after undergoing the our etching process and can be finished with various plating or coatings if required.
Our assembly line approach reduces manufacturing time and allows us to save time by cutting unnecessary steps out of the manufacturing process.
We have a dedicated team of fully qualified professionals who are on hand to deal with and complete assembly work requests from our customers.
Bespoke for your needs
We offer assembly, soldering and spot welding, bespoke packaging, and also many other specialist bespoke customer requirements that our clients may have.
Photo Etching Process
The photo etching process produces metal components that are both stress-free and burr-free compared to more traditional manufacturing methods – ensuring that your end product is as both accurate and precise to your drawings.
Qualitetch offer a huge range of metals for etching including: Stainless Steels, Carbon Spring Steels, Copper, Brass, Nickel Silver, Mild steel, Phosphor Bronze, Silver, Beryllium Copper, Aluminium, Nickel, Mu Metal, Alloy 42, Alloy 52 & Many Others.
Metal Cleaning Process
In order to ensure perfect parts every time, we need to clean the sheet metal to remove any impurities from the sheets surface before manufacturing your designs. This involves passing the metal sheets slowly through acid or alkaline solutions and rinsed prior to laminating, printing and developing.
Metal cleaning involves passing the sheets slowly through conveyorised acid or alkaline solutions and rinsed clean prior to the lamination, printing and developing stages, depending on the sheet metal choice required.
Preparation - Lamination
Once cleaned the metal sheets are coated with a UV sensitive photo resist, which melts to sheet in preparation for the printing process.
Preparation - Printing
The printing process involves us taking your chosen profile design and applying it to a two sided top and bottom acetate photo film mask, that we then print your design onto the UV sensitive photo resist.
Preparation - Developing
Once the metal sheet is printed with your chosen design, we then need to develop the sheet. This process effectively washes away the fine lines of the profile we are cutting, leaving raw metal track lines ready for the etching process to work it's magic very precisely.
Photo Chemical Etching
The etching process itself is an acid, usually ferric chloride, that effectively eats it's way through the metal at a known rate to ensure precision and targeted only in the areas you wish to remove, such as the profile track lines or other holes and features such a mesh. The rest of the sheet is masked by the UV photo sensitive blue resist, to protect the metal from the etchant until the parts are complete. This can be a very useful in a manufacturing process as the design can be very complex or include tabs or half etch fold bend lines at no added cost as you simply print your design rather than needing expensive machining time. Following an on-line dimensional check, all that is then required, is for us to strip and remove the UV photo sensitive resist coating and the parts are ready for full QA Inspection.
At Qualitetch we offer various levels of QA inspection depending on our customers needs, as we supply both major blue chip businesses all over the world as well as smaller local businesses and anywhere in-between, as the photo etching process is very versatile. We have various automated optical equipment to ensure you parts are accurately supplied to your drawings. We also offer levels of inspection including 100% inspection, PPAP levels, batch inspection, First article inspection (FAIR) and bespoke customer inspection as required.
Once the parts are fully inspected and passed they are ready to be packed and sent to the customer, or for additional processes such as plating, forming, soldering, spot-welding, machining, EDM wire erosion, heat treatment or any other bespoke services required, such as assembly.
The metal is cleaned once the design has been finalised, and the sheet covered with UV sensitive photo-resist before printing. The brass is then run through a chemical bath with ferric chloride, suitable for both soft and hard metals making it a suitable etchant. Any remaining photo-resist and chemicals are removed following the etching’s completion and it is then approved by our skilled QA technicians.
We are able to offer a quick and efficient turnaround, whatever the size of demand, with a high level of accuracy and quality. If you would like more information on the photo chemical etching process of brass, please contact the team on 01354 658787.