Search Results

SHOT PEENING HEAT TREATMENT Finishing The welding process when fabricating exhaust parts induces some residual tensile stresses in the joints. These tensile stresses act to stretch or pull apart the material surface which might initiate a crack when there are enough load cycles. To improve the life of these welded metal fabrications, the residual stress levels in the materials need to be modified. This can be done using either a shot peening process or a heat treatment .​ We work closely with different companies to make sure that these processes are coordinated at the right time to ensure all delivery deadlines are met. Image courtesy of Tamworth Heat Treament

Privacy Statement PERSONAL DATA THAT WE COLLECT We collect data to be able to work efficiently and to offer you the best experience with our products and services. You provide us with some of these data (optional) directly to us, for example when you create an account on our website, you request more information via the website, you enter into a mediation assignment with our office, you contact our office for an enquiry or quote, you subscribe to the newsletter, you respond to an open vacancy, ... Data we collect through the website: Contact details: Name, address, email, telephone number Information we collect from personal contacts: Contact details: Name, address, e-mail, telephone number, (in case of company: VAT number, sector of activity,...) Information we collect during a project: Part numbers, part geometry, delivery address, … General information when working for us or when applying for a open vacancy: Employer, education, marital status, number of children and their age, ... WHAT DO WE USE THESE PERSONAL DATA FOR? The personal information you provide us can be used to manage our relationship with you, to create a part, provide a quote, create a contract, to carry out the management of the project, or to adjust or improve the website and related services to you. We also process your data to handle your purchases correctly. We may also use your personal information for marketing purposes, send you promotional materials or communications relating to services provided by us, informational newsletters with tips and any legislation that we think may be of interest to you. You can request that we stop sending Communication, e-mails or other correspondence at any time. This can be done without justification and free of charge, for example by clicking on the provided unsubscribe link, at the bottom of every marketing e-mail message or simply by contacting the office via e-mail or by telephone. AN OVERVIEW OF OUR PROCESSING ACTIVITIES • Send out a newsletter • Manage the account on the website • Organize site visits • Drawing up parts. • Create and/or deliver parts • Giving orders and contact details to suppliers or sub contractors to carry out work. • Handling your purchases via the website • Providing improved service-level service • Handling complaints • Respond to job applications HOW LONG DO WE KEEP PERSONAL DATA? We do not store your personal data for longer than is strictly necessary to achieve the objectives set out in this privacy statement. TRANSFER OF DATA TO THIRD PARTIES Your data will not be passed on to third parties unless needed to complete the project or needed for legal reasons. However, your data will be stored in a shared database between our software packages. The information you provide us in the context of your application will in no case be transferred to third parties. PROCESSING RESPONSIBILITIESAND PROCESSORS Your data can be processed by all employees of our office in the context of performing their tasks. The responsibility for the processing is at the expense of the company's statutory managers or the employee itself. SAFETY OF YOUR PERSONAL DATA We make every effort to protect the security and confidentiality of your personal data. We use appropriate technical and organizational measures in such a way that the processing complies with the requirements of national and European legislation YOUR RIGHTS • Right of access and inspection You have the right to receive free access to your personal data at any time, as well as the use that we make of your personal data. • Right of improvement, removal and limitation You always have the right to ask us to correct, supplement or delete your personal data. You can also do this yourself via the personal settings of your account. You acknowledge that in case of refusal of communication or request for the removal of personal data, certain services and products are not available. You may also request to limit the processing of your Personal Data. • Right of resistance You also have a right of opposition to the processing of your personal data for serious and legitimate reasons. In addition, you always have the right to oppose the use of personal data for direct marketing purposes; in such a case you do not have to give reasons. • Right of free data transfer You have the right to obtain your Personal Data processed by Us in a structured, current and machine readable form and / or transfer it to other responsible parties. • Right of withdrawal of consent If the processing is based on your prior consent, you have the right to withdraw this consent. • Right to file a complaint You have the right to file a complaint with the The UK’s independent authority set up to uphold information rights in the public interest, promoting openness by public bodies and data privacy for individuals.: https://ico.org.uk/global/contact-us/, Wycliffe House, Water Lane, Wilmslow, Cheshire, SK9 5AF Tel: 0303 123 1113 (local rate) or 01625 545 745 if you prefer to use a national rate number. AMENDMENTS This privacy statement is tailored to the use of and the possibilities on this website and our services. We reserve the right to change or update this privacy statement at any time. When we make changes to this statement, we change the date of the "last update" of the statement. In case of important changes, we will mention this on our homepage. Nevertheless, we recommend that you periodically read our privacy statement. QUESTIONS AND FEEDBACK If you have any questions about this privacy statement, please contact us using the details below: Our address: Good Fabrications Limited, Unit 3a Drakes Farm, Drakes Drive, Long Crendon, Aylesbury, Bucks, HP18 9BA Email: info@goodfabs.com Tel: +44 (0)1844 202850 Fax: +44 (0)1844 202833 This page was last updated on 21 May 2018. ​ This privacy statement applies to the website and services of GoodFabs (hereinafter "we", "us"). We attach great importance to the privacy of our customers and visitors to our website. For this reason, we will only process your data in a manner that complies with the General Data Protection Regulation (GDPR).

SHOT PEENING HEAT TREATMENT Shot Peening Shot peening is a separate cold working process designed to increase the exhaust life cycle by producing a compressive residual stress layer on the outer surface, which modifies the mechanical properties of the metals. The residual tensile stress from welding metals such as inconel, stainless steel and aluminium is created because the weld consumable is often applied in a liquid state. The welding process heats the metal and the weld is applied in its hottest, most expanded state. When the much cooler consumable material is bonded to the base material, the weld tends to cool rapidly and will attempt to shrink from the ‘drop-in’ temperature. Because the base material is usually much stronger and not in a molten state, this cannot shrink, leaving the material remaining in a highly stressed “tensioned” state. This zone is usually just next to the weld joint, which explains why a crack may appear close to the weld. Shot peening process, image courtesy of Sandwell Ltd . The Process The shot peening process impacts the metal surface with small pellets (round metallic, glass or ceramic particles) with a high enough force to deform the surface plastically. A compressive layer is generated when the impact of all the particle shots produces small indentations in the top surface layer. The layer beneath the top surface is then compressed, generating a compressively stressed layer underneath the shot peened area. This layer helps to prevent the stressed area from cracking as a crack cannot propagate in a compressive environment. The shot peening process has been proven to be very beneficial in many components operating in a highly-stressed environment such as motor racing. Typical Behaviour The graph shows a typical situation of a welded metal component before and after shot peening. ​ As can be seen from the graph, the residual stresses in the welded metal are positive, which puts the surface layer in a tensional state. When shot peened, the material is compressed and the residual stresses are negative, putting the material in the compression state where the cracks cannot propagate. This graph illustrates how the residual stresses after shot peening are the most negative in the layer underneath the shot peened top layer and gently increase as we go deeper into the material. This graph does not refer to any specific material and is purely for illustration purposes. Quality Standards All shot peening processes are rigidly quality controlled and regulated by a series of SAE standards that control the process, media used, etc. Shot Peening Media SAE-AMS-2431. Automatic processing SAE-AMS-2430 Computer controlled processing SAE-AMS-2432 Almen Strips & Gauges SAE-J442 Almen Strip usage SAE-J443 GoodFabs can manage both the shot peening and heat treatment processes as part of an exhaust programme for a race team or engine builder. Inspection is normally required both before and after heat treatment and shot peening, so we coordinate both procedures prior to final delivery of the finished and inspected part to the customer. Certificates of Conformity For both shot peening and heat treatment processes , we provide customers with certificates of conformity to ensure full traceability across the whole of the manufacturing process.

Replica F1 Halos As F1 Halos are an expensive FIA mandated part - made in titanium for race use - we were asked to make aluminium replicas for an F1 team with a number of show cars that also travel the world. GoodFabs worked on the development of the original halo while still in the concept stage and as such, has all the equipment CNC machining and fabrication skills to manufacture exact copies at a fraction of the price. Contact us for more information and a quotation. A GoodFabs Aluminium replica F1 Halo GoodFabs CNC Machine replica Halo's in Aluminium A GoodFabs Aluminium replica F1 Halo GoodFabs CNC Machine replica Halo's in Aluminium A GoodFabs Aluminium replica F1 Halo GoodFabs CNC Machine replica Halo's in Aluminium A GoodFabs Aluminium replica F1 Halo GoodFabs CNC Machine replica Halo's in Aluminium A GoodFabs Aluminium replica F1 Halo GoodFabs CNC Machine replica Halo's in Aluminium A GoodFabs Aluminium replica F1 Halo GoodFabs CNC Machine replica Halo's in Aluminium

Full Exhaust Systems GoodFabs has been making full race exhaust systems for race teams since 1984 - including over 30 years for Formula 1. ​ We currently fabricate, assemble and organise all sourcing and finishing (heat treatment, shot peening, coating) of machined, 3D printed, pressed, formed and cast components that make a full system.​ We supply exhaust parts, including full systems to Indy Car, Le Mans, WRC, RallyCross and various Touring Car series. In 2019, we designed, fabricated and supplied the full exhaust system for BTCC winners, West Surrey Racing.​ We can design or help design a system from scratch or work from fully designed CAD drawings supplied by the customer.

Contact Us If you have any questions about the products and services we offer, please get in touch by phone or email, or use the contact form provided. You can also follow us on our socials. +44 (0)1844 202850 info@goodfabs.com Office & Workshop Address Good Fabrications Limited Unit 3a Drakes Farm Drakes Drive Long Crendon Aylesbury Bucks HP18 9BA Contact Form Name Email Contact Number I would also like to subscribe for updates. Submit Thank you for contacting us. We will get back to you as quickly as possible. Privacy Statement

Our Workshop The GoodFabs workshop is located on the Crendon Industrial Estate in Motorsport Valley on the Buckinghamshire/ Oxfordshire border between Thame and Aylesbury. We employ 30 full-time staff working across several disciplines including design and administration, quality inspection and NDT, tube forming and pressing, tube bending, heat shielding, machining and fabrication/ welding. GoodFabs owns the largest selection of mandrel bend tooling designed to manipulate exotic metals such as Inconel and titanium outside the aerospace industry. We are specialists in working with nickel alloys and thin-walled, ultra-lightweight materials, mainly for the motorsport market, although we also supply other industries such as oil and gas, marine, defence and aerospace. We often have job vacancies, operate an active apprenticeship programme and are always interested to hear from potential candidates who feel that they have skills and qualifications that could be of use to us.

TUBE FORMING TUBE BENDING PRESS FORMING BEND REQUEST FORM Tube Forming & Bending 90% of the exhaust systems fabricated by GoodFabs start with a piece of flat metal sheet rather than ready-made tube. As inconel, titanium and 321 stainless tube is not available at short notice, or in small quantities, it is more practical to form and bend sheet metal from scratch. We stock 304 stainless steel and aluminium tube in various diameters and wall thicknesses. ​ Having worked with Formula 1 design engineers for over 40 years, GoodFabs has built up a large supply of mandrel bend tooling to meet their requirements for multiple diameters, wall thicknesses and centre lines. Although most of our tube forming, bending and pressing is for our own race exhaust programmes, we do make custom made tube, bends and pressings for engine builders, motorsport teams and custom exhaust fabricators, including our competitors. ​ Download our tooling charts or visit our individual Tube Forming , Tube Bending and Press Forming pages for more information and photos. ​ You can also visit our Online Shop . ​ Please note that all our bends are produced with a minimum clamp and are supplied untrimmed. If a specific clamp and tail length is required or you would like us to trim your bends to a specific length, please state this on your enquiry. VISIT ONLINE SHOP Mandrel Bend Tooling Charts TOOLING CHARTS

ALUMINIUM BENDS INCONEL BENDS STAINLESS STEEL BENDS TITANIUM BENDS Stainless Steel Bends We stock various diameters and wall thicknesses of 304 stainless steel tube and can mandrel bend any combination that you can see in our tooling chart . We form our own 321 stainless steel tube so we can make any diameter, although some wall thicknesses may not be available. You can also browse our online shop . If you need bends and tube sizes that are not included in the tooling chart, please contact us on info@goodfabs.com and we'll do our best to accommodate your requirements. TOOLING CHARTS BEND REQUEST FORM

ISO 9001 Certification GoodFabs is committed to providing customers with the highest quality products using only the very best components from trusted suppliers and our ISO 9001 certification helps support that objective. ​ ISO 9001 certification means that we have met very high standards in our quality management systems and support the traceability and repeatability of manufacture which is so important to our customers. ​ It's also our belief that regular reviews of processes, suppliers and internal performance are key to the success of any business so we will be using the ISO framework to facilitate this for the benefit of all our customers and staff.

CNC Machining The fabrication of exhaust systems involves many machined parts. Clamp rings and bosses, for example, are constantly required on many development exhaust systems. We make jigs for every part, which are machined in-house along with complex press tools. At GoodFabs, we have invested in multiple CNC turning centres, as well as 3-axis and 5-axis CNC machines, which enable us to machine all the necessary components to supply completely finished exhaust systems. On top of our in-house machining capability, we work closely with several specialist machining companies who are used to producing high-quality parts in aluminium and stainless steel, and exotic materials such as inconel and titanium, within very tight timeframes to ensure that the complete exhaust systems can be delivered quickly. With new technologies such as laser sintering becoming a major part of modern F1 exhaust systems, much of our in-house work involves machining complex DMLS parts for use as Formula 1 components. Our team of machinists work to supply our own fabricator/ welders with components that are immediately inspected and often welded within hours of production to exhaust assemblies that need to be delivered or sent to post-fabrication processes such as heat treatment, shot peening and thermal coating. GET IN TOUCH Stainless steel v-band rings Aluminium Turbine Tools used in the machining department Preparing to machine aluminium tooling plate Inconel swarf residue Inconel swarf residue Inconel, titanium, aluminium and stainless steel billet and plate Inconel, titanium, aluminium and stainless steel billet and plate Programming a Doosan CNC lathe Mixed metal swarf residue separated after machining process

Exhaust Heat Shield Insulation GoodFabs fabricates and installs the world’s best exhaust insulation for race teams, engine builders and supercar constructors. Modern exhaust systems - particularly those used by turbo-charged engines - reach very high temperatures, so there is often a requirement to add a layer of thin metal foil enclosing a layer of microthermal material. The purpose of the insulation is two-fold: to keep the heat inside the exhaust system to help the gases exit faster and to protect components and bodywork in close proximity to the manifold, turbo, secondaries and tailpipe. Shop Data Sheets ​ Microporous Insulation Material ​ GRADE 1000R 1000R Min-K® Flexible Superwool® Blanket MICROTHERM® QUILTED Needlemat Adhesive Tape PPI 8415 PPI 8415-R Heat Shielding at GoodFabs Heat Shielding at GoodFabs Heat Shielding at GoodFabs Heat Shielding at GoodFabs Heat Shielding at GoodFabs Specialised equipment is used for the heat shielding process Heat Shielding at GoodFabs Microtherm material is cut to patterns and glued prior to enclosure Thermal insulation, or heat shielding as it is also known, is often a more expensive and intricate process than assembling the exhaust components themselves. The skills and technology required to cut, press and weld the thin (<0.15mm) metal foil are not commonplace and are only known to a few select companies around the world. Sourcing the materials used in heat shielding is not straight forward as they are mainly used in the aerospace rather than the automotive or motorsport industry. Heat shielding should not be confused with regular exhaust wrap or lagging, which attaches a layer of metal or tape directly to the pipework. Heat shielding carried out by GoodFabs always involves a separate layer of microthermal or microporous material between 3 and 12mm thick, which is encapsulated by a fully welded covering of dimpled 0.1mm thick stainless steel or inconel foil. This shield is then welded directly onto the exhaust system (integral) or pressed into a special shape (clam shell) that allows it to clip over the system and fit snugly around it. Example of a non-insulated tail-pipe burning race car bodywork (seen within red circle) An assortment of dimpled foil pressings 3D printed jigs are often used to ensure that the integral heat shielding fits within the packaging Clam shell heat shields with clips designed to fit around repackable mufflers Heat shields Heat shields When should you use heat-shielding? Using an insulated heat shield around the exhaust system or the turbo can often help to increase the power output of engines with operating temperatures exceeding 800 degrees centigrade (around 1,500 degrees Fahrenheit) while limiting the thermal exposure of structural components and reducing thermal fatigue (in IndyCar, NASCAR, Rally, etc) just as a ceramic thermal barrier coating does, but with far better effect. By cladding the exhaust pipes with thermal insulation, the outer surface temperatures drop significantly and contain the heat energy within the exhaust system.​ What is integral insulation? With the turbo having been re-introduced to Formula 1, unique exhaust heat management skills are needed to create heat shields which follow the exhaust contours perfectly, even with very complex geometry. Each part is individually wrapped with insulation matting - microporous or silicate fibre are the most popular forms - followed by spot welding a dimpled stainless steel, inconel or titanium outer shell. Custom-made press tools are manufactured in-house from CAD drawings to ensure that the shells are moulded to fit perfectly over the exhaust system. ​ What is clam-shell or clip-on insulation? For exhaust systems that have more room in the engine bay or undercar area and are likely to be re-used or regularly removed, the clam shell option is sometimes preferred. This form of heat shielding fits around the exhaust system and follows its contours without being welded to the pipes themselves. Clam shells with clips or springs make it easier to remove the outer cladding which allows mechanics to perform non-destructive testing and early crack detection on the used exhaust pipes. Clip on insulation features a dual layer of foil enclosing matting between layers so adds an additional layer of heat-shielding compared to integral insulation. Should I use integral or clam shell heat-shielding? Integral or integrated heat shields are spot welded onto the exhaust system while the pressed clam shell heat shield is held together by clips or springs. Your choice of type of heat shielding will depend on how much space you have and whether you are likely to work on or test exhaust systems for damage after they have been run. GET IN TOUCH