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  • Hard Chrome plating (chroming) by Poeton – Apticote 100
    pitting corrosion and impair grinding Why is Apticote 100 the best hard chrome plating PC controlled power supplies fully programmable Accurately controlled chemistry and maintenance Specialist anode design Specialist tooling minimising edge build up and allowing precision plating Monitored and controlled iron and trivalent chrome build up Professional laboratory backup Highly trained and skilled operators Comprehensive quality inspection Rigorous environmental controls minimal waste rinse water Features Extreme hardness 1 000 Hv Low coefficient of friction 0 05 oiled Excellent abrasion resistance Precision plated 75 microns No final grinding Corrosion resistance Low adhesive wear Precision Apticote Hard Chrome Plate showing no edge build up Primary Benefits Primary Application Sectors Apticote 100 hard chrome plating chroming is used in a wide variety of industries including Pharmaceutical Chemical Oil and Gas Textiles Printing Mining Moulding Aerospace Automotive APTICOTE 100 hard chrome plating chroming provides prolonged service life for your parts reduced finishing costs and lower frictional losses The specialised crack free version Thin Dense Chrome of hard chrome plate APTICOTE 100C can greatly extend the corrosion life of your product even under arduous conditions that would normally be detrimental to the substrate APTICOTE 100 hard chromium plate is ideal as a volume production process repeatable zero defect just in time the ultimate manufacturing wear resistant treatment Substrates APTICOTE 100 hard chromium plating chroming can be applied to a wide range of base materials including stainless steels cast irons aluminium alloys titanium alloys copper alloys bronzes and nickel alloys Tolerances and Cost Poeton have highly skilled operators who can optimise the tooling and jigging so that you the customer can be provided with the most cost effective coating precision deposits to tight tolerances where you want it with a minimum post grinding requirement Key Properties More detailed information is available on request but some of the main advantages of APTICOTE 100 hard chrome plating chroming are Adhesive Wear Resistance APTICOTE 100 hard chromium plating chroming gives ultra high metal to metal sliding wear resistance up to 200 times less wear than that given by through hardened induction hardened carburised or nitrided steels in dry sliding situations and five times better than conventional hard chrome plate Under these conditions APTICOTE 100 can only be matched or bettered by the highest quality thermally sprayed ceramics or cermets These exceptional characteristics are fully exploited in such applications as machine tool slideways for one of the major manufacturers of this type of equipment in the UK The surface characteristics of APTICOTE 100 hard chrome plate allow the reciprocating components i e the machine bed and saddle to move easily without wearing or losing dimensional accuracy over many years of arduous use In lubricated applications such as cylinder bores APTICOTE 100 hard chromium plate provides unsurpassed qualities It responds superbly to honing and with a crack network its ability to hold a lubricant and prevent scuffing is excellent Abrasion Resistance APTICOTE 100 hard chromium plate gives superb abrasion resistance even under high contact stresses providing a very low wear

    Original URL path: http://www.poeton.co.uk/w1/hard-chrome.htm (2016-02-12)
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  • Non-stick and low friction polymer coatings by Poeton – Apticote 200
    is best 1 1 2 4 4 1 For low friction 1 is best 3 3 2 1 1 1 Sliding wear resistance vs steel pin 1 is best 5 4 2 1 2 5 Abrasion resistance by SiC wheel 1 is best 3 1 2 2 3 5 Chemical resistance 1 is best 3 1 4 1 3 1 FDA Approval Compliance Yes Yes No Yes No Yes a Powder coating electrostatic b 200C is generally reserved for stainless steel substrates c 200N can be built up to 50 if the application demands additional thickness d Other colours including black are also possible e With 200B the higher temperature cure gives maximum wear resistance f Optimum cure temperature for 200L is 240 C Properties and Industrial Benefits As shown in the table above the APTICOTE 200 polymer coating systems can offer you a wide range of performance characteristics depending on the needs of your application Working Temperatures The coatings can withstand operating temperatures in the range 200 C to 260 C For the highest service temperatures you should specify 200L which can tolerate short periods at up to 285 C Non Stick and Wear Resistance It is not usual to achieve the best mould release properties and high sliding wear resistance with the same coating The chart above shows the performance of the various Apticote 200 grades Non stick is measured by the force required to separate a product burnt rice is the most severe test from the surface so that a low value is best Likewise wear is measured by a pin on disc machine low values of wear rate being the objective For best mould release non stick for example against sticky food or pharmaceutical products needing USDA FDA food approval or compliance specify Apticote 200G or Apticote 200N With stainless steel substrates E g Stavax moulds the clear Apticote 200C provides superb non stick release properties in situations where FDA approval compliance is required If it s a high temperature application Apticote 200L is the best option for working with plastics packaging and adhesives If you require a degree of sliding wear resistance then Apticote 200E Food approved or compliant should be specified but the level of non stick and low friction will be reduced In sliding situations requiring a high load bearing ability the best coatings are Apticote 200E and Apticote 200B with the latter being cured at the highest temperature 345 o C Low Sliding Friction Apticote 200 Grade Dynamic Friction Coefficient 200C 0 08 200L 0 10 200E 0 11 200B 0 14 200N 0 15 200G 0 15 Again low friction and good non stick properties do not necessarily occur together The table shows the friction performance of the various grades in a ball on disc test 10N load demonstrating that Apticote 200E and Apticote 200L coatings are the best choice for low friction sliding situations particularly if a low wear rate is also important Apticote 200C gives exceptional low friction and

    Original URL path: http://www.poeton.co.uk/w1/polymer-composite.htm (2016-02-12)
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  • Hard Anodising (anodizing) by Poeton - Apticote 300
    300 aluminium hard anodising anodizing is used in a wide variety of industries including Gears Pulleys Valve Blocks Hydraulics Pneumatics Pistons Hinges Swivel joints Rod ends Food Chutes Nozzles Performance Benefits Excellent Wear Resistance Tests show that for certain aluminium alloys the wear resistance of Apticote 300 hard anodising is similar to that of case hardened steel hardness 800VHN and even that of Hard Chromium although the micro hardness values reflecting the micro cellular structure rather than actual base oxide are only 300 500 VHN At low loads the wear compares favourably with that of tool steels having a hardness rating of 950 VHN Load carrying capability is dependent upon alloy choice The benefit to the end user is prolonged wear life with a substrate that provides for reduced weight and cost Good Corrosion Protection Generally superior to that of chromic and sulphuric anodising where the thin coating may be easily scratched or damaged the corrosion resistance of Apticote 300 aluminium hard anodizing can be further improved by dichromate or acetate sealing although there will be some loss of abrasion resistance Typical results show 500 hours salt spray endurance on 6082 aluminium alloy Note that alloys with a lower copper or silicon content show a lower resistance to corrosion The benefit to the end user is prolonged corrosion protection with a substrate that provides for reduced weight and cost Good Heat Resistance Apticote 300 hard anodised coatings can withstand short exposures up to 2 000DegC which makes them ideal for parts like rocket venturi Long exposure to high temperatures has no adverse effect on the coating performance other than crazing of the surface Specifically Apticote 300M with a thickness over 200 is a very effective thermal barrier on aluminium and it out performs any other anodised layer in rocket venturi applications High Dielectric Strength Breakdown voltage increases with film thickness Coatings normally withstand voltages in excess of 1 000volts DC Unlike most insulators Apticote 300 hard anodised aluminium coatings can operate at temperatures up to 2 000DegC Its combination of high dielectric strength and thermal stability make Apticote 300 the ideal surface for mounting electrical components Mechanical Strength Fatigue Strength Losses in tensile strength due to anodising are very slight and have not prevented the widespread use of aluminium into many high tech industries However anodised aluminium is not recommended for high impact situations Hard anodising can reduce the fatigue strength of the base material by up to 47 depending on the alloy and the coating thickness However this loss can be held at 16 20 by modifying the sealing procedure provided a little reduction in abrasion resistance can be tolerated Where fatigue mechanisms exist the aluminium components benefit from ceramic shot peening before coating Uniform Coverage Apticote 300 aluminium hard anodising provides a uniform surface layer of predictable thickness Component surface growth is approximately 50 of the total coating thickness so that final dimensions can be accurately predicted For optimum results sharp corners should be relieved as far as

    Original URL path: http://www.poeton.co.uk/anodising.htm (2016-02-12)
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  • Sulphuric anodising and chromic anodising (anodizing) by Poeton – Apticote 300SU
    of colours Our aluminium anodising capacity is huge with automated lines capable of processing volume parts quickly and efficiently as well as long deep tanks for your biggest even 5 meters Aerospace and Defence parts With an eye on environmental issues associated with Chromic Acid we now offer Tartaric Sulphuric Acid Anodising as an alternative with a plant and treatment procedure that conforms to the latest Aerospace and Defence specifications Applications Typical applications of chromic acid anodising on aluminium are Electrical insulation Protection under mildly corrosive conditions Surface key for paint application Preferred when it is important to minimise fatigue loss And typical applications of sulphuric acid anodising on aluminium are Electrical insulation Protection under more severe corrosive conditions 350 hours salt mist For colour dying yielding deep rich colours Preferred over chromic anodising when the coating needs toughness scratch resistance and durability Sealing For maximum corrosion protection aluminium anodised layers are usually sealed immediately after the main coating process filling the micro columns in the layer and preventing access to the substrate The main techniques are Hot water hydrating the oxide Nickel acetate Potassium di chromate It is also possible to infuse the layer with a polymer a procedure more commonly used with Hard Anodising but we do offer that facility with Apticote 300su Corrosion resistance Corrosion protection is the main purpose of aluminium anodising Typical salt mist endurance results on 6082 aluminium alloy ASTM B117 97 and ISO 9227 are less than 5 spots per panel Pass criteria vary with different end users and specifications Coating Salt mist endurance Sulphuric anodised 300 hrs Chromic anodised 300 hrs Chromic anodised di chromate seal 500 hrs Substrates Apticote sulphuric and chromic acid anodising can be applied to most aluminium alloys including those commonly used in aerospace and defence applications 2124

    Original URL path: http://www.poeton.co.uk/w1/sulphuric-and-chromatic-acid-anodising.htm (2016-02-12)
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  • Tartaric Sulphuric anodising (anodizing) by Poeton – Apticote 300TSA
    with AIPI 02 01 003 A complete package with NDT and paint priming Environmentally acceptable Thickness and coverage APTICOTE 300TSA provides a homogeneous anodised coating on aluminium with a minimum thickness of 2 microns and a maximum of 7 microns It is evaluated by an eddy current technique in accordance with ISO 2360 and by the coating weight in accordance with EN 12373 2 Coverage of the part is evaluated by an ohmmeter Galvo Test 2 using the insulating properties of the film Corrosion protection Salt spray tests are performed in accordance with ISO 9227 using aluminium alloy 2024 T3 on a TSA hot water sealed specimen 60 minutes at 96 C and on a TSA post treatment process specimen that is the Alodine 1200 Chemical Conversion Process Sample Period Outcome TSA seal 96 hours Zero pitting marks per dm TSA post treatment 336 hours Average of 1 7 pitting marks per dm Max pit size 0 7mm Applications Just some of the APTICOTE 300TSA aluminium applications Launch rails Actuators Fuel pipes and connectors Landing gear Missile locks and ejectors Underwater weapons Generically APTICOTE 300TSA on aluminium is used For electrical insulation For protection under mildly corrosive conditions As a surface key for paint application When it is important to minimise fatigue loss As an environmentally acceptable replacement for chromic acid anodising Substrates APTICOTE 300TSA can be applied to all aluminium alloys including those commonly used in aerospace and defence applications 2124 T3 7175 and 6082 Surface morphology In comparison to Chromic Acid Anodised surfaces APTICOTE 300TSA gives a slightly coarser grain structure with additional surface porosity It provides the optimum adhesion for subsequent paint priming without crucially compromising the corrosion protection Fatigue APTICOTE 300TSA is applied to the AIPI 02 01 003 specification Rotating bar tests have shown that the fatigue life of TSA treated aluminium alloy samples is identical to that produced after Chromic Acid Anodising Non Destructive Testing Poeton offer a comprehensive non destructive testing service including Liquid Penetrant Inspection LPI All parts are individually inspected for cracks porosity weld defects and any manufacturing or casting imperfections that might subsequent impair the TSA step left Liquid Penetrant Inspection LPI Poeton Laboratory Salt fog cabinet We work to a strict Quality Plan dictated by the customer Specification overseen by our laboratory Our facilities include Optical Microscopy Scanning Electron Microscopy Metallography Chemical analysis Atomic Absorption Technique Corrosion testing Adhesion testing Wear testing We are able to undertake all the required analysis for bath control fully complying with the specifications For instance acid concentration to AITM 3 0030 and dissolved aluminium by Atomic Absorption Our processing capability Our TSA processing line for aluminium is fully automated and computer controlled Sizes up to 0 5 metre and 20 kg Automatic voltage ramping Precisely controlled sequencing pre treatment TSA post treatment Bath temperature control to within 1 C NDT capable of inspecting parts up to 1 metre long and smaller parts at 50 per hour Painting priming on parts up to 2

    Original URL path: http://www.poeton.co.uk/w1/tartaric-sulphuric-anodising.htm (2016-02-12)
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  • Hard Anodised (Anodized) polymer composites by Poeton – Apticote 350
    appearance and feel Coating cross section x 1000 The protective film is created on and within the surface of aluminium and its alloys The fine columnar structure of the Hard Anodised layer makes it ideal for absorbing and bonding to lubricating polymers Applications There are many applications where Apticote 350 hard anodised composite coatings out perform normal anodic coatings The industrial sectors include Aerospace Marine Electronics Pharmaceuticals Packaging Automotive Pneumatics Food Properties and Benefits SURFACE Friction vs Hard Steel Aluminium Alloy 0 80 Electroless Ni 0 55 Hard Chrome 0 50 Hard Anodised 0 35 Apticote 350 0 10 Low Friction APTICOTE 350 composite hard anodized coatings are invaluable in an un lubricated situation The dispersion of polymer within the layer gives low friction throughout the aluminium component life reduces wear on the counterface and decreases frictional heating Non stick Non wetting APTICOTE 350 composite hard anodising imparts non stick properties to aluminium alloys with reduced drag or torque during initial running Polymer is also available on the coating surface to provide a start up and assembly aid The polymer is both oleophobic and hydrophobic so the coatings repel water and oil and are self cleaning APTICOTE 350F is particularly effective in food applications Uniform Coverage Apticote 350 hard anodising provides a completely uniform surface layer of predictable thickness on the aluminium alloy Component surface growth is approximately 50 of the total coating thickness so that final dimensions can be accurately predicted For optimum results sharp corners should be relieved as far as possible The benefit to the end user is reduced machining and grinding costs and improved precision of manufacture Poeton are highly skilled at jigging and fixturing so that an even coating distribution can be achieved on complex geometrical features including down long bores where normal anodised layers will thin However it should be noted that anodising to a specific final size requires that the as manufactured dimensions and tolerance band are both closely controlled Tolerances are additive so that the final size depends more on the incoming precision than on any small variations in the anodising process Poeton strongly recommend that parts should be anodised to a specified coating thickness rather than to a defined final size High Wear Resistance Adhesive Wear Factors Hard steel pin vs a rotating coated disc 10N sq mm load APTICOTE 350 hard anodized composite coatings provide superb wear protection for aluminium alloys in sliding and adhesive wear situations It combines the hardness of the anodic layer with the lubrication properties of the polymeric in fill ensuring an extended component life and reduced frictional losses It is ideal for slideways bearings calibrators where low stick slip is required Substrate materials The APTICOTE 350 composite hard anodising process can be applied to a range of aluminium alloys so that the user can choose the substrate for its strength or corrosion properties Best results are obtained on alloys in which the silicon content is below 10 and the copper content is below 5 Ideal

    Original URL path: http://www.poeton.co.uk/w1/hard-anodic-polymer-composite.htm (2016-02-12)
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  • Hard Anodised (Anodized) anodic composites by Poeton – Apticote 355 and Apticote 356
    supported by a Quality Plan and Data Card to ensure compliance with the customer drawings and specification Complex masking can be undertaken to ensure the coating is applied only where required Ancillary treatments such as Alochrom can be applied to uncoated areas For further information and technical support on these two new and exciting processes for aluminium alloys please use the Poeton Helpline button in the top navigation bar Apticote 355 for Aerospace and Defence Apticote 355 offers up to 15 000 hours of salt spray protection MIL A 8625 ASTM B 117 on aluminium alloys which makes it ideal for the most arduous of defence and marine applications Its corrosion protection for aluminium alloys far exceeds that stipulated in all the major aerospace and defence specifications and is much greater than that provided by conventional anodised polymer in filled composites Salt spray test data to ASTM B177 73 Apticote 355 is already established in a number of very arduous defence applications Towed arrays Robots Cameras Missile Launch Rails More info about anodising Apticote 356 for Food and Medical Apticote 356 is compliant for use in food contact involving repeated use such as food processing equipment No other anodic surface treatment can give aluminium parts 10 000 hours of salt spray corrosion and meet NSF 51 standards It also brings a host of other advantageous properties Permanent dry lubricity Chemical resistance Hardness equivalent to 65Rc High dielectric strength 2 000V Good surface release Low Coefficient of Friction Moisture resistance Excellent resistance to heat and UV light Wear resistance exceeds all major Spec requirements in Taber tests Coating performs at temperatures from 79C to 316C Above all Apticote 356 provides the best wash down surface for the most sticky situations in food processing including aluminium alloy mixers pumps vanes hoppers and

    Original URL path: http://www.poeton.co.uk/w1/advanced-anodic-composites.htm (2016-02-12)
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  • Electroless Nickel plating by Poeton – Apticote 400
    5 with uniformity and dimensional precision on most metallic substrates including mild steel stainless steel cast iron aluminium and titanium This allows the designer to choose his substrate and mating parts on the basis of a need for strength light weight or corrosion resistance Any problems of wear or corrosion that might occur with such materials can be overcome with one of the Apticote 400 options Why is Apticote 400 the best electroless nickel Fully automated lines PC controlled fully programmable Accurately maintained bath chemistry and make up controlled by a dialysis unit that continuously monitors the electrolyte composition Professional laboratory backup Highly trained and skilled operators Comprehensive quality inspection The APTICOTE 400 Electroless Nickel Options APTICOTE 400N For maximum toughness and general wear and corrosion protection APTICOTE 400N heat treated For optimum wear resistance APTICOTE 400P For extended corrosion protection Apticote 400D NEW with a graded structure For maximum corrosion protection and good wear resisance Features High wear resistance Can be hardened to 1 000Hv Excellent corrosion protection Superb accuracy of deposition Thickness range 5 to 50 Completely uniform coverage No post machining Plates on most metals Excellent anti fretting Applications Valves Pumps Splines Gears Hydraulic pistons Moulds Cutting knives Housings Mirrors and reflectors Fasteners Properties and Benefits Corrosion protection Corrosion protection by electroless nickel relies on the integrity of the coating it is not a sacrificial layer and provides only a diffusion barrier Hence Poeton s high level of plating skill and dialysis controlled process chemistry ensures deposits that have minimum defects and zero residual tensile stresses An example of the relative corrosion protection that can be provided is shown in the graph showing the exceptional performance of the new Apticote 400D coating with its special graded structure It is specifically recommended for applications in the marine industry where chloride corrosion normally results in early failures Precision hard chrome plating on JAS 39 flight actuators Note we now recommend Apticote 400D in preference to the traditional high phosphorous electroless nickel variant Also please consult our Apticote 460 page to view electroless nickel products that provide extended corrosion protection with non stick and low friction Low wear and high hardness In abrasive situations Apticote 400 Electroless Nickel can reduce the wear on substrates like stainless steel by over 80 In adhesive metal to metal situations Apticote 400 Electroless Nickel provides even greater wear protection The hardness of the Apticote 400 nickel can be increased to 1 000Hv by heat treatment at 400DegC And because our dialysis control system on the electrolyte chemistry ensures the best coating quality with high hardness without residual coating tensile stresses to cause brittleness Apticote 400 out performs competitors electroless nickel by a significant margin Uniformity Apticote 400 electroless nickel provides predictable uniform coverage in the range 5 to 50 depending on the application It is applied to your finished product without any need for post machining It can even coat internal surfaces thread forms and bores Substrate materials Using our extensive R D capability

    Original URL path: http://www.poeton.co.uk/w1/electroless-nickel.htm (2016-02-12)
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web-archive-uk.com, 2016-10-22