ENGINEERING. CASTING. MACHINING. YOUR COMPONENTS IN PERFECTION

MASTERING THE PRESENT WINNING THE FUTURE The story of the Grohmann aluminium foundry began in 1930. Quality awareness, proximity to the market, and innovative spirit have since fuelled continuous growth. A few milestones from the company's recent history stand as examples of its development into today's group of companies with its outstanding manufacturing capabilities: • • • • 2004 Purchase of the Elektror aluminium foundry, Mühlacker 2006 Expansion of the machining operation in a new production hall 2008 Gravity die casting relocated to a new production hall 2010 Purchase of the Gardner Denver...

Pooled expertise on five sites Unparalleled in Germany: four high-capacity sand casting foundries with five moulding lines, two gravity die casting foundries and four CNC technology centres, plus a factory specialised in prototyping. The strengths of the five Grohmann sites all add up and complement each other. That makes the group a leading supplier for high-quality cast aluminium. Johann Grohmann Bisingen plant 1, sand casting Johann Grohmann Bisingen plant 2, gravity die casting Johann Grohmann Bisingen plant 3, machining Johann Grohmann administration Johann Grohmann Mühlacker plant 4 Johann...

PERFECTION IN EVERY RESPECT For the Grohmann group quality means: reacting quickly to market requirements, flexibly implementing customer wishes and producing with precision, using the best production technology. Quality planning is an elementary part of our quality management system. We meet the highest of standards – thanks not least to casting process simulation, APQP processes designed to avoid flaws and the production of FMEAs to identify any risks of flaws even during the product development process itself. Our certifications are evidence of our high standards in matters of quality, epitomised...

Measure – Test – Document Metal and moulding material • Thermo-analysis • Low-pressure density sampling • Spectral analysis • Sand laboratory • Grinding and microscopy Physical properties • Fluoroscopy / X-ray testing • Fluorescent dye test • Tensile tester / test bar • Hardness testing • Leak test • Pressure change tests • Residual contaminant analysis Measuring • 3D CNC measuring machine • Faro® index arm • Scanning Measuring equipment – Gusstechnik Schopfheim: tactile measuring

Project management and development Three-part carrier housing with internal cooling jacket core - Module c. 110 kg

The know-how of our employees is at the heart of every single project – from the sound advice at the outset all the way to the finished component. As a full-service supplier we assist your Development and Design department with our special knowledge in matters of aluminium casting. Together with our clients, we thus arrive at the component design right for moulding and casting. Reproducible high quality and technically fully developed solutions - that is the key to cost-efficiency. Our engineers utilise leading edge methods to simulate the filling of the mould and the solidification process....

PROTOTYPING YOUR COMPONENT ALWAYS ON HAND By using a variety of prototyping methods, we are able to reduce the time required to produce prototypes considerably. Our close collaboration with our customers starts even at the stage of producing and optimising CAD data for casting suitability. In order to have components to hand even during the early stages of the development process, we have various methods of prototyping at our disposal: • 3D printing in plastic • Prototyping using diverse sand casting processes, including the core block method • Machining, surface treatment, module assembly Cast...

ALL FROM A SINGLE SOURCE FROM CONCEPT TO FINISHED PRODUCT Lightweight, high quality, and dimensionally stable under load: aluminium components have become indispensable to industrial products. Yet the shapes are becoming increasingly complex, varied and intricate. By combining many years of experience with cutting edge technologies, we produce high-quality cast aluminium parts, achieving maximum precision through a high level of automation. Using comprehensive test facilities, we ensure that every component has the required characteristics.

Automatic HWS GTS moulding line Box size 1660 x 860 x 350/350 Our production technologies for cast aluminium in overview Gravity die casting For piece weights of 0.1 kg to 50 kg • Horizontal casters • Vertical casters • Tipping casters • Casting robots Sand casting For piece weights of 0.2 kg to 100 kg Core making Core shooters (Resol CO2) + Cold Box 2.5 – 100 litres Moulding plants • Automatic moulding plant with box size 1660 x 860 x 350/350 • Automatic HWS moulding plant with box size 900 x 800 x 250/250 • Automatic HWS moulding plant with box size 900 x 700 x 250/250 • Automatic Künkel Wagner...

350 mm Water distributor (Automotive) Gear housing (Mechanical engineering) 260 Cartridge adapter (Measurement and control technology) Gear housing (Commercial vehicle) Gear housing (crane) Water-cooled engine housing (e-mobility)

FOR BRILLIANT RESULTS THE FINISHED PART'S FINAL STEP All from a single source: the quality of our products is based on a well thought-out concept across every step of the production process. Cast finishing, machining and component assembly are key parts of our service portfolio. In conjunction with our customers we work up logistics concepts for optimum component supply. From the very start, we look at the whole process sequence and in this way guarantee the best possible overall performance. Machining - Johann Grohmann Bisingen

Our production technologies for machining, assembly and surface treatment in overview Machining • 4- and 5-axis CNC machining centres • Diverse lathes and milling machines for precise machining of the cast parts • Cleaning and machining robots for drilling, thread cutting, and milling for precision levels of up to 0.1 mm Production islands for machining parts • Machining equipment • Assembly • Testing for leaks and differential pressure • Logistics concepts Surface treatment • Powder coating • Electroplating • Anodising • Wet painting • Others on request Cleaning facility - MGH GussTec Cleaning...