Surface technology encompasses processes and equipment for the finishing, cleaning and coating of metallic and non-metallic surfaces. Key areas include blasting systems (compressed air, wheel blasting, water blasting) and sandblasting booths for mechanical pre-treatment.
For painting, painting systems (spray gun, spray and dip coating) and powder coating are used to produce robust, solvent-free coatings. Electroplating systems enable electroplating with zinc, chromium, nickel or precious metals. Tumbler cleaning and vibratory finishing handle the deburring and polishing of bulk materials.
Leading manufacturers include Eisenmann, Wagner, Sames Kremlin, Dürr Systems, OTC, Wheelabrator, Rösler, Walther Trowal, Gema and Nordson.
Surface technology is used in metalworking, the automotive and supplier industries, mechanical engineering, the construction industry, and in the production of furniture and consumer goods.
Frequently asked questions about second-hand surface treatment equipment
What types of equipment fall under the category of surface treatment?
These include powder coating systems with booths and curing ovens, wet painting and spray booths, blasting systems (compressed air, wheel or injector blasting), electroplating and pickling systems, cleaning and degreasing systems, as well as dryers and conveyor systems. Key factors in making a selection include workpiece size, throughput, coating process and the required surface quality.
What should I look out for when buying a second-hand powder coating system?
It is important to check the condition of the booth, filters and recovery system (cyclone/filter cartridges), the functionality of the spray guns and control system, as well as the condition and temperature uniformity of the curing oven. You should also check the conveyor system, the maximum component size that can fit in the oven and the required connected load. Ease of cleaning and the ability to change colours significantly affect the system’s practical suitability.
Which wear and condition indicators are relevant for blasting systems?
In blasting systems, turbine blades or impellers, cabin linings, nozzles and abrasive processing systems are subject to heavy wear. Pay attention to wall thicknesses and perforations in the housing, the condition of screens and air separators, and the operation of the dust extraction system. Worn armour and inefficient abrasive processing increase operating costs and reduce the blasting result.
What safety and environmental regulations must be observed?
Paint and powder coating systems are subject to explosion protection requirements due to the use of solvents or powder-air mixtures; consequently, ATEX-compliant design, Ex zones and an explosion protection document are essential. In addition, there are requirements regarding exhaust air and emissions (including the Technical Instructions on Air Quality – TA Luft), fire safety and, in the case of electroplating, the handling of chemicals and waste water. CE conformity and periodic inspections should be verifiable.
What particular checks should be carried out on second-hand electroplating and wet chemical systems?
For electroplating and pickling systems, the condition of tanks, linings and racks, resistance to the electrolytes used, as well as rectifiers, extraction systems and wastewater treatment are crucial. Corrosion, material fatigue in plastic tanks and leaks are critical issues. You should also clarify the regulatory approval situation, as substances hazardous to water are subject to strict requirements.
What role do furnaces and dryers play in coating lines?
Furnaces and dryers have a significant impact on quality and throughput; key factors include temperature uniformity, the condition of the insulation, burners or heating coils and recirculation fans, as well as energy efficiency. Uneven temperature distribution leads to coating defects and incomplete curing. The heating method (gas, electric, infrared) should be compatible with your existing utility supply.
How important is pre-treatment for coating quality?
Pre-treatment is crucial to quality, as cleaning, degreasing and conversion coatings determine the adhesion and corrosion protection of the subsequent coating. When inspecting second-hand cleaning, degreasing and spray tunnel systems, check the condition of the nozzles, pumps, heating and bath control systems. Inadequate pre-treatment can hardly be compensated for by downstream processes.
What needs to be taken into account during dismantling, transport and installation?
Booths, ovens and conveyor systems are large and, in some cases, permanently installed; therefore, the effort involved in dismantling, hall height, floor load and utility supply (electricity, compressed air, gas, water, exhaust air) must be clarified at an early stage. Extraction and exhaust air systems must be redesigned and approved at the new site. Allow sufficient time for reassembly, commissioning and acceptance testing.
What are the typical pitfalls that lead to poor purchasing decisions?
Common pitfalls include worn-out blast cleaning system linings, inadequate or missing explosion protection, uneven furnaces, underestimated exhaust air and regulatory requirements, and high cleaning costs when changing paint colours. A test run using your typical components and the verification of existing explosion protection and emissions certificates significantly reduce the risk.
How do I narrow down suitable systems on machinery-market.eu?
Using the filters for manufacturer, year of manufacture, condition and technical specifications, you can narrow down the listings to suit your process, component size and throughput. Each listing specifies the year of manufacture, condition, location and technical data, allowing you to compare oven size, connected load and equipment in advance.
How do I get in touch with the seller and arrange a viewing?
Use the contact function in the listing to get in touch with the seller directly, without any intermediaries, to arrange a viewing with a demonstration and to clarify the price, payment and transport. For added guidance, verified sellers are marked on the platform.
Is financing available for surface treatment equipment?
You can submit a non-binding leasing or hire-purchase enquiry via the listing; you then agree the specific terms with the seller or their financing partner. The purchase itself is not processed via the platform, as machinery-market.eu is purely a marketplace.