Updated: Thursday the 02^nd of October, 2008 Stevens Rowsell Precision Sheet Metal

Since our incorporation in 1965, Stevens Rowsell has developed a sound reputation as a specialist sheet metal engineering company manufacturing high quality precision components.

We are a privately owned business, operating from a modern, well equipped facility in South East England, offering CNC production capacity for the following processes;

Laser Cutting Tube Cutting Punching Press Brake Folding / Forming To compliment our primary processes we also offer; MIG and TIG Welding Fabrication and Assembly Rolling

Punching:

At Stevens Rowsell we operate Trumpf Rotational Punch machines. Punching in terms of making holes or cutting out pieces of sheet metal is done by a process known as shearing. Shearing is the result of placing a sheet between an upper tool (punch) and a lower tool (die). As the sheet is moved around the machine table the upper tool punches through it producing a hole with the same shape as the geometric contour of the punch tool. The positioning, movement and processing of the sheet is synchronised by a CNC program written using special software by an engineer. Aside from punching openings, our machines can also be used for creating contours by a process called ‘nibbling’ or can be used to create special shapes by a process called ‘forming’. Our machines are capable of punching varying material types in sheet widths of up to 1300mm. We typically specialise in processing the following; Up to 3mm mild steel Up to 2mm stainless steel Up to 6mm aluminium

Folding:

At Stevens Rowsell we use 3 Trumpf Trumabend V-Series Pressbrake Folder to fold sheet metal.
Our machines all work on the same principle whereby a workpiece is placed in between a punch (top tool) and a ‘V’- shaped die on a raised bed (bottom tool). The punch is hydraulically forced down pressing the workpiece into the die and thus producing a fold. The dimensions of the punch and die will determine the angle and geometry of the resultant fold.

Welding

MIG Welding
Metal Inert Gas welding, predominantly known as MIG is a commonly used high deposition rate welding process.
Metal wire is continuously fed from a spool over the pieces of metal being joined together as a high frequency electrical current is fed to it. An electric arc is formed when this electric current passes between the metal wire and the metal to be welded. The resultant heat of the arc melts the metal away and forms a molten pool which subsequently cools, fusing the metals together leaving a strong welded join.

TIG Welding
We use Tungsten Inert Gas welding, commonly called TIG welding, for all of our stainless steel and aluminium components and for thin gauge mild steel. The TIG process is slower than MIG and produces a more precise and superior quality finish. It enables us to weld intricate detail on smaller componentry where precision and aesthetics are of vital importance. TIG can be used at lower amperages for very thin and soft exotic metals where heat and distortion must be kept to a minimum. Welds are generally made without filler metal and are free from splatter giving a clean professional looking end product.

Resistance Welding
Resistance Spot Welding (RSW) is a commonly used resistance welding process that uses the application of electric current and mechanical pressure to create a weld between two pieces of metal. Weld electrodes conduct the electric current to the two pieces of metal as they are forged together under sufficient heat and mechanical pressure to create a molten state and a resultant strong join. This process is easily automated, can be done at high speed and is very economical.