Surface finishing
State the surface finish you need in your enquiry. We place your part with a vetted partner shop that supplies it with this finish.
Surface treatment finishes CNC parts after machining: anodising for aluminium, nickel plating, zinc plating and black oxide for steel, hardening for surfaces under wear. Strobel Industry places your enquiry with vetted partner shops that supply the part with the required finish. State process, layer thickness and colour in your enquiry. Reply within 24 hours.
What is surface treatment?
Surface treatment covers every process used to finish, protect or functionally improve a component surface. Depending on the requirement it optimises corrosion protection, wear resistance, electrical conductivity or appearance.
The surface finish belongs in the enquiry. State process, layer thickness, colour and the areas that must be masked. We place it with a partner shop that supplies the part with this finish. You agree how the coating is organised directly with the partner shop in the quote.
Surface processes
Which process fits depends on material and requirement: corrosion protection, appearance or function. The main processes at a glance.
Anodising
Electrochemical oxidation of aluminium. Coloured or clear. Layer thickness 5 to 25 µm. Corrosion protection and a decorative surface.
Nickel plating
Electroless or electrolytic. Even layer thickness on complex geometries too. High corrosion and wear resistance.
Black oxide
Chemical blackening of steel. Thin conversion layer (1 to 2 µm). Decorative, with temporary corrosion protection.
Hardening
Case hardening, tempering, induction hardening. Targeted hardness increase for wear loaded functional surfaces.
Chromate conversion
Passivation of aluminium and zinc. Clear, yellow or black. Corrosion protection to DIN EN 12487.
Zinc plating
Electrolytic zinc plating with passivation. Blue, yellow or black. Economical corrosion protection for steel parts.
What belongs in your enquiry
Process and standard
State the process and, where applicable, the standard, for example anodising to DIN 17611 or zinc electroplating to ISO 2081.
Layer thickness
State the layer thickness in µm. It changes fits and threads and has to be allowed for during machining.
Masking
Mark fits, threads and contact faces on the drawing that must not be coated.
Colour and appearance
For anodising and zinc plating state the colour, for visible parts also the pretreatment, such as blasted or brushed.
Hardness
For hardening state the process, target hardness and hardening depth, for example case hardened to 58 to 62 HRC with 0.8 mm case depth.
Records
Name layer thickness measurement, hardness test report or a certificate to EN 10204 in your enquiry. The partner shop states in its quote what it supplies.
Typical areas of use
Corrosion protection
Anodising, zinc plating, nickel plating or chromate conversion protect your parts from environmental exposure, from mild to extreme.
Wear protection
Hardening, nitriding or hard nickel plating extend the life of functional surfaces such as bearing seats and guideways.
Decorative surfaces
Coloured anodising, polishing or black oxide for visible components with a high quality look.
Functional surfaces
Defined roughness, low friction layers or electrical conductivity, matched to the function of the part.
Frequently asked questions
Q1Does Strobel Industry carry out the surface treatment itself?
No. Strobel Industry places enquiries with vetted partner shops. State the finish in your enquiry and we look for a shop that supplies the part with this finish. Quote, production and invoice come directly from the partner.
Q2Which surfaces suit aluminium?
Anodising (clear or coloured), chromate conversion, electroless nickel or powder coating. The choice depends on the load and the look you want.
Q3How are tolerances held with a coating?
The layer thickness is allowed for during machining, and fitting surfaces and threads are masked before coating. For this to work, layer thickness and masking belong in the drawing or enquiry.
Q4Can I request single parts with a surface finish?
Yes, enquiries are possible from 1 piece. For single parts and small quantities, coaters often charge a minimum per batch. The partner shop states the price in its quote.
Q5How long does surface treatment take?
The partner shop states the lead time in its quote. It depends on complexity, quantity, material, surface process and capacity. If it is urgent, put your target date in the enquiry. We will then look specifically for a shop that can meet it.
Q6Are test certificates available?
State it in your enquiry, for example layer thickness measurement, adhesion test or a certificate to EN 10204. We place it with partner shops that supply these records.
Request a part with surface finish
Send us your drawing with the surface finish you need. We review it and get back to you within 24 hours with the right partner shop.
Ready for the
next step?
Send us your drawing. We review the enquiry and pass it on to a suitable, vetted partner shop, free and without obligation .