beschichtungstechnik e 29-05-2012

8/12/2019 Beschichtungstechnik e 29-05-2012

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The Whole World of Coating Technology


2/12SURFACE AND COATING TECHNOLOGY


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All our expertise for your surfaces

Metallic coating are constantly gaining inimportance. They serve as finishedsurfaces or as intermediate layers forsubsequent or as intermediate layers forsubsequent plating processes. Bothtypes of coating are designed to meetthe most stringent technical require-ments and help to drive innovation in a

wide range of different markets.

DODUCO has a long record of R & D inthe field of precious metal coating andplating. The results of this work areevident in numerous patents for chemi-cal and electrolytic precious metal pla-ting processes and surface treatmentstechnologies, representing valuableexpertise which we apply for the benefitof our customers. This enables us to

offer many innovative coating processesand provides us with the know-how tooffer customized solutions to meet themost highly specialized demands.

On the one hand, our process develop-ment teams work on combining existingprocesses in order to continually expandthe technical capabilities for specificapplications, and on the other hand wekeep a watchful eye on the market in

order to collect and analyze informationand develop solutions in advance sothat we are in a position to offer the rightplating and surface treatment solutionsto meet the challenges of the market themoment they arise.

In many cases, job shop plating is themost economical solution for ourcustomers.

Functional precious metals have aproven track record for many productapplications in

The automotive industry Drive engineering Chemical plant engineering Electrical engineering Electronics Laser technology Power electronics Medical devices Sensors Mechanical engineering RF technoogy

The requirements placed on surfacesare as varied as the products. As soonas we receive an enquiry, our specialistsstrive to find the best possible coatingstructure for each application. Thetechnical suitability of each coatingsolution is discussed in detailedconsultation with our experts, and the

most economical method is established.In response to each enquiry received bythe job shop, DODUCO immediatelysends a best-price quotation based onthe customers drawings andspecifications.

Competence in precious metals

Specialist in precious metalsBy using PVD technology, virtually allprecious metals can be deposited, evenonto non-conductive materials. Therange of processes includes depositingfine gold and a number of hard goldalloys for contact applications, andplating with fine and hard silver,palladium, palladium nickel, rhodium andplatinum. State-of-the-art productionprocesses guarantee the maximumcost-effectiveness. We have severalelectroplating machines at our disposalso that even large production runs canbe handled efficiently. Manualprocessing lines designed on a modularbasis enable new processes to bequickly adapted and optimized in orderto build up layers to meet customer-

specific requirements. Finally, aproduction area for coating ceramicsubstrates rounds off our range ofservices.


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Development partnership -more than just a slogan

Technical advisers, process engineersand development staff in the electro-plating division at DODUCO recommend

ways of customizing coating technolo-gies to the requirements of our custo-mers latest products. In doing so, bothtechnical and economic aspects aretaken into account and discussed withthe customer in advance. Together with

the customer, we clarify any issues rela-ted to the design principle of the productto be coated, the mechanical and elec-trical requirements, the choice of suitablepre-treatment, the layers to be appliedand the sequence in which they shouldbe applied, the required layer thicknes-ses, the effects of the technologies usedon subsequent stages of processing andthe effects and influences caused by theambient atmosphere. During this proce-dure it always transpires that there are anumber of different layer systems thatcan be used in the subsequent projectand these options then have to beindividually tested and researched byDODUCO and/or the customer toestablsh their suitability.

At an early point during the cooperationbetween the customer and DODUCO,the from of delivery between the twoparties is agreed upon. Here, too, requi-rements relating to purity and cleanliness(e.g. suitability for clean room conditions)

with regard to the product to be coatedand the surface and the type andmethod of packaging used by DODUCO

are established.

After the coating or coating variants and,if necessary the workpiece holder, too,have been determined in consultation

with the customer, our project manage-ment team takes on the task of schedu-ling and coordinatin the project. The aimis to find a layering system which fulfils allthe customers requirements with regard

to the product and ist workability. Solu-tions are always arrived at with a view tokeeping costs down and quality high.

The project management team acts asthe interface between the customer andthe production and development

Project management

departments, suppliers, the differentlaboratories and Quality Assurance, andremains the central point of contactthroughout the entire implementationphase of the project. The team coordi-nates the technical variants as well asdeadlines, costs and any further measu-res which may arise from the results ofthe work on the various coating variants.

All date pertaining to the project isdocumented in transparent detail.

The results obtained for the variouscoating variants are passed on to thecustomer and the results of any trialscarried out by the customer are madeavailable to DODUCO for furtheroptimization.

Once the most suitable coating has beenestablished, a sample is prepared forapproval by the customer before formingthe basis for series production.



Coating of technical components

Plating of metalstrips

Specialcoatings

Our areas of expertise include plating a wide variety of metallic materials both with precious metals such as gold, silver, palladium and rhodium as well as with base metals such as tin, tin/lead,chemically applied and electrolytic nickelcoating and electrolytic copper plating.

In addition to the conventional substratematerials of copper and copper alloys,

we can also apply strongly bonded coa-tings to aluminum, high-alloy steels as

well as to more specialized materials.

Strips can be solid, pre-stamped or belt-linked. Strips and stamped parts madeof copper and copper alloys, nickel andnickel alloys, stainless steel or berylli-um/bronze and can be coated additio-nally hardened or annealed.

Electroplating is used for fine and hardgold, silver, palladium/nickel, copper andnickel as well as pure tin and tin/leadalloys. In addition, metal strips can alsobe hot-dip tinned.

These include plating with special mate-rials such as molybdenum, molybde-num/copper, tungsten, tungsten/copper,

AlSiC and die-cast zinc as well as ouractivities in the area of selective plating,

which represents a low-cost solutionsince it enables the amount of preciousmetal deposited to be reduced to thatneeded to coat the required surfaceonly.

The selective deposition of preciousmetal on to individual parts is achievedby using special masks and maskingtechniques.


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Product Development

Product Delivery

Development

Analysis and laborarory

DODUCOs development goals arebased on the dictated of the market andthe requirements of our customers.Here the main focus is on the search forinnovative, environmentallyfriendly solu-tions and simpler, more stable processes.Our experienced development teamoptimizes and develops electrolytic andchemical products in the light of currentand future market demands. Even spe-cialized customer requirements areincorporated into our development work.Development projects also draw on theexpertise of our own analytical andmaterials labs. A distinct advantage of thisis the gradual testing of the productsunder development from laboratory scaleand pilot plant to full implementationunder production conditions in our ownelectroplating plants. This means that it isnot left up to the customer to acquire theexperience that must be gained prior tocommencing series production, but thatthis is done in our own production de-partment. This is a significant advantagefor our customers.

The actual work of the developer starts inthe chemical development lab. Initialsupport comes from the analytical lab,

which is also at the disposal of our custo-mers. For example, this is where elec-trolytes are analyzed by means of atomicabsorption spectroscopy, ICP-OES orHPLC. These processes are used todetermine whether the constituentcomponents lie within the prescribedlimits or whether the composition of agiven alloy conforms to the prescribedspecification. The results aredocumented. Regularly performed,precise analytical techniques are crucial

to the subsequent development work andfor the effectiveness on the processesdeveloped.

Once the first parts have been coated,the properties of the layers are assessedand measured for the first time. There area variety of measurement techniques thatcan be used for this, depending on theparameters specified. These methodsrange from the non-destructive measure-ment of the brightness or reflectivity of the

layer depositied and measuring itsmechanical properties to more involvedstructural inspections using a scanningelectron microscope and EDX probe. Theculmination of each development projectis the release of a product or an entireprocess for series production.

X-Ray thicknessmeasurement system

SEM-scanning microscopy

Pull and Shear Teester for Thin Wire Bondst

Development lab R+D

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Electroplating products

PVD coating

DODUCO offers a wide range ofelectroplating products for the productionand treatment of innovative surfaces. Thisincludes precious metal baths, salts,concentrates and preparations as well asnon-precious metal baths, products andprocesses for PCB technology andsurface treatment products such asmetal strippers, cleaning solutions andsilver antitarnish protection.

DODUCO has a variety of sputteringplants to suit different workpiecegeometries.

By using product-specific holders and a variety of planetary drives, a uniform

coating can be applied, regardless of whether the surface is coated completelyor selectively.

The PVD process gives an extremelyuniform coating thickness and anexcellent adhesion. Furthermore, thelayers can subsequently be reinforcedthrough electroplating.

Barrel plating

Rack plating

PCB technology

Bulk items can be plated with manydifferent combinations of layers of varyingthicknesses. In each case, the mostsuitable electroplating unit and productionline are chosen to match the geometry ofthe parts and the batch size.

New products and parts with complexgeometries impose special demands onthe production of workpiece racks and

jigs to ensure that the required layerthickness is deposited even on lessaccessible areas of the product. To meetthis requirement, DODUCO has its ownrack and jig construction department.

DODUCO offers customers from thePCB industry a comprehensive range ofsurfaces for printed circuit boards. Highlyefficient plants are available which ensureconsistent quality and short delivery timesfor the externally electroless andelectrolytic plating of rigid, semirigid andflexible circuit boards. Each process canhandle all common formats up to610 x 605 mm. Maximum flexibility in

terms of the layer thicknesses that canbe deposited and the formats that canbe plated make DODUCO the idealpartner for PCB manufacturers for whomit is not economical to plate circuit boardsas part of their own production process.

Types and processes

Plating of the entire surface orselective two-sided plating of solid orstamped strips Stripe plating of solid strips using

wheel and masking techniques

Spot plating of contact surfaces onpre-stamped or punched strip andgrids Selective single-sided plating of pre-stamped parts using brush platingtechniques Electroplating wires with precious

metals The dimensions of the base material stripdepend on the process used;thicknesses range from 70 m to 2 mmand the maximum width is approx.120 mm.

Strip plating technologies

Dipping process

Stripe plating

Spot plating

Selective plating

Plating of wires



Comprehensive Quality ManagementBenefitting Our Customers

In order to meet the high expectations ofour customers, DODUCOs qualitymanagement system is certifiedaccording to DIN EN ISO 9001. Thedevelopment of new products is basedeither on concrete specifications fromthe customer or on a specification briefdescribing the requirements in detail. Inall cases, a precise analysis of the cus-tomers requirements or the expecta-tions of the market form the basis ofplanning and define the subsequentquality of the final product.In order to guarantee an efficient andgoal-driven development process,modern methods such as FMEA (FailureMode and Effects Analysis) are used atan early stage in the developmentsequence. The combination of environ-mentally friendly solutions, maximum

Test bed for evaluating the physicalappearance of gold-plated components.

Wetting balance for testing solderability

ICP-OES spectrometerfor measuring elements

Coating tickness measuring system


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Precious

Metal Recyclingfor the World of Tomorrowcosteffectiveness and on-time deliveryunderscores the key quality factors indevelopment projects. In order to verifythat the customers specifications areadhered to right from the developmentstage, a number of labs are available

which have at their disposal a variety oftesting and analysis facilities. This means

that the following methods can be usedor taken advantage of:

REM/EDX analysis Metallographic studies (crossselectionpreparation, structure inspection, etc.) Mechanical and physicalmeasurements (hardness tests,electrical conductivity, contactresistance, ultrasonic testing, etc.) Adhesion tests

Corrosion tests according to DINstandards Soldering tests Wetting tests Bonding tests(thick wire and gold wire) AAS(atomic absorption spectroscopy) ICP (inductively coupled plasma) XRF analysis Numerous methods of chemical

analysis Various methods of non-destructivelayer thickness measurement Reversed bending strength Stress-strain testing

But these techniques are also usedduring the product treatment process,beginning with the goods inwardsinspection, carryng over into specifictests during production and finally

ending in the pre-delivery tests. The intelligent and customer-orienteduse of the methods described ensuresthat the products are supplied in thequality exepted by the customer and atthe rigth time.

From the point of view of protecting valuable natural resources and in the lightof the volatile precious metal price hikesin recent years, the process of preciousmetal recovery has becom more andmore important all over the world.DODUCOs highly efficient precious metalrefinery offers an effective and economi-cal processing of all precious metal con-taining materials on the basis of provenand innovative technologies, includingenvironmentally-friendly and legally acce-ptable disposal of the base materials. Byuse of melting technology, electrolysis,

wet chemical processes and incinerationthe most efficient recycling is ensured forall precious metal containing waste,

which may contain gold, silver, platinum,palladium and rhodium from manydifferent branches of industry such as:

used electrolytes resins and filter cartridges

metallic residues

scrap metal sweeps

Electroplating

Jewelry Industry

Electrical Industry

Electronics

All this enables the DODUCO technologygroup to close the precious metal cycleand exploit many significant synergyeffects whilst remaining faithful for ourslogan everything from a single sourcefor the benefit of our customers.

plated strip and stamping scrap semi-finished product and alloyresidues

connectors ICs and transistorsPCB waste

We offer a full range of services fromenquiry to billing, including feasibility tests

and proposals for solutions in case ofenvironmental protection and hazardousgoods. A transparent billing system andreimbursement options according toindustry standard for the recoveredprecious metal complete the spectrum ofservices offered by our precious metalrefinery.


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DODUCO GmbHim Altgefll 1275181 PforzheimGermany Phone +49 7231 602-0Fax +49 7231 602-517

http://www. doduco.netMail: [email protected]

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