Chemical etching expenses would be the sum of a number of components, metal and photoresist, labour (including engineering), technical fees and machine time; not forgetting overheads which comprise of chemistries, water, power and waste treatment, too because the usual service and administration functions. Get a lot more details about Chemical Etching by Qualitetch
Raw material fees are likely to differ dramatically in price. Needless to say, common grades of stainless steel, nickel silver and brass are going to become significantly less costly than exotic alloys, such as beryllium, molybdenum, titanium and shape memory alloys.
Etching comprises of a combination of processes, which mainly consist of sheet sizing and tooling, cleaning, photoresist lamination, printing, establishing, photo etching and stripping.
Practically just about every course of action includes a labour content, producing this a important element on the overall cost. The labour is practically exactly the same whatever the sheet size and because of this, sheet size is an crucial aspect in photo etching fees.
Elements are priced by the sheet, which means smaller sized components or larger sheet sizes yield reduced unit fees. Even so, the larger the sheet the higher the dimensional tolerance across that sheet, which means exceptionally tight tolerances are generally only achievable in smaller sheet sizes.
In processing, components may be supplied each tabbed into the sheet or loose, with tabbing facilitating lower plating expenses and reduced packing.
Material thickness is one more critical price consideration, because the thicker the part the longer it requires to etch. Components above 1.5mm thick are often seen as uneconomical to chemically etch.
The final key price element, as with all rival machining processes, is volume, with price minimizing significantly when sheet quantities attain the 10s or 100s.
It is actually worth noting that the cost of chemical etching is usually very competitive when in comparison to other processes, such as stamping or laser profiling. As opposed to stamping, which needs really hard tooling; chemical etching relies on digital tooling that may be extra economical and far faster to generate. Digital photo tools are a one-off price for traditional photo etching, but now with Laser Direct Imaging, there’s no need for photo tools in a significant number of projects.
You should also be conscious that whereas laser profiling is usually a linear procedure charged by time and therefore by the inch, etching is basically charged by the sheet. Simultaneous machining of elements suggests photo etching handles increasing complexity at no added expense as well as allows various designs to be prototyped on a single sheet.
In quick, the costing method is usually a challenging one, but when you provide the 5 variables, material, thickness, element size, tolerances and quantities, the chemical etching method could present essentially the most economical solution to manufacture your components.