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Cold Drawn Steel – Cold Drawing

The process of cold drawing is a procedure by which steel profiles are formed in order to achieve complex cross sections of excellent precision in these steel shapes. After careful pre-treatment and de-scaling, the special profile bars are drawn through a forming die. This operation can be repeated up to three or four times.

Cold drawing of hot rolled and hot extruded special pre-shape steel profiles tightens the cross-sectional tolerances, thus leading to significant improvement in dimen­sional accuracy and surface quality. Cold drawn steel special profiles offer the same precision achieved by machining but without the waste.

Cold drawn special profiles offer extensive advantages, among other things:

• Smooth and scale-free surface
• Sharp edges
• Uninterrupted grain orientation
• Increased tensile strength and yield point

Applications include many cold drawn steel shapes such as both carbon and stainless steel fittings, various stainless steel shapes used in aerospace applications, linear motion and machinery applications.
The economical advantages of using cold drawn stainless steel profiles are so numerous that in most cases stainless steel profiles offer the best solution to custom engineered designs.

Hot Rolled Steel – Hot Rolling

• Hot Rolled Steel Shapes

During the production of spe­cial steel profiles by hot rolling the input billet or slab is formed into lengths up to 70 m using two oppositely rotating cylin­drical rolls. The hot rolled steel shapes of this forming technique are used in a multitude of industrial appli­cations. Hot rolled special pro­files offer innovative solutions whether it be for automotive, materials handling, railroad or thicker flange and web thickness structural steel shapes use. Finished hot rolled steel shapes are roller straightened and sheared into production lengths or sawn into fixed lengths according to customer wishes.

• Targeted strengthening of highly stressed areas of component parts
• Best mechanical properties through uninterrupted grain orientation
• Best shape properties and fitting accuracy by maintenance of the tightest tolerances

Hot extruding – Extruded Steel Shapes

• Extruded Stainless Steel
• Stainless Steel Extrusions

During hot extrusion a round steel billet is pre-heated and, after leaving the furnace, is pushed through a forming die into a profile bar using a ram with an extrusion force of 2,200 ton.Hot extrusion offers substantial advantages in comparison to hot rolling forging or machining.
Hot extrusion can be used to make complex profile shapes even using metals which are difficult to form. In addition, small lot sizes can be produced economically.
Hot extruded profiles offer the benefit of:

• Different material thicknesses within one profile cross-section
• The possibility to use in highly sensitive areas, where the special profiles must withstand specific demands of temperature, pressure, aggressive media or hygienic requirements
• Seamless structure of solid and hollow section

Laser welding – Laser Welded Special Profiles

For the production of laser welded special profiles both standard geometries such as sheets, tubes or angles and extruded or hot rolled pre-shapes can be used.

Hoesch Schwerter Profile hydraulically clamps the individual parts which can be up to seven meters long, and subsequently welds them together with a 12 KW CO2 laser. Of particular significance is the low thermal stressing of the work piece. This enables low-distortion or distortion-free production.

Due to the filigree and clean welding seam laser welded profiles find a wide spectrum of uses within the architecture and building industry, among others.

The applications of laser welded special profiles are as varied as the forms of the profiles themselves: angles, channels, T-profiles, beams, rectangular hollow profiles, standard hollow profiles and special forms can be produced.
Laser welded special profiles are particularly suited for optically sophisticated and durable designs and also offer the following advantages:

• Precision Fit
• Free-form shapes
• Optimum weight
• Free from further processing

Cold Rolling – Cold Forming – Roll Forming

• Cold Rolling
• Cold Rolled
• Cold Formed
• Cold Forming
• Roll Forming

Roll forming can be described as a continuous bending operation done at room temperature in which sheet or strip metal is plastically deformed along a linear axis. Tandem sets of rolls (known as roll stations) shape the metal stock in a series of progressive stages until the desired cross-sectional configuration is obtained by cold rolling.
Roll forming is ideal for producing parts with long lengths or in large quantities. It can also produce multiple length parts from the same set of tooling. Virtually any material that can be cold formed by sheet forming techniques can be roll formed.
The process is quite cost effective for large production runs, although sometimes roll-forming is utilized regardless of quantity, when dimensional consistency is of tantamount importance.

OVERVIEW OF Ohio Moulding Corporation - OMCO
OMCO “Roll-Forming Excellence” was established in 1955, and is a market leader in the roll forming industry.  OMCO is a provider of innovative roll forming solutions as well as engineered products. 
OMCO is the market leader in the truck and trailer sector of the transportation industry.  Additionally, several diverse sectors markets served are:  material handling, defense, building products, point of purchase displays, garage doors, furniture, racking, HVAC, marine and many others.  OMCO’s focus is to continue to diversify our customer base and add value by building on our roll forming expertise and application knowledge.

OMCO’s capabilities include light and heavy gauge material with material thickness up to 3/8 inch, section depth up to 8 inches, and strip width up to 30 inches.  OMCO can process mild steel, stainless steel, aluminum, and nickel based alloys and also has the capability to pre-notch, pre-pierce, and post-pierce as well as mark components for identification. Additionally, OMCO offer capabilities to fabricate, drill & tap, punching, slotting and toggle loc.  The company’s two manufacturing facilities are located in Morgantown, PA and Pierceton, IN with headquarters located in Cleveland, OH.

ROLL FORMING PROCESS
Roll forming is a metal fabrication process that utilizes sheet metal in coil form where the material is progressively shaped as it passes through a series of roller dies for cold rolling .  During this process of producing a profile it is possible to pierce holes, slots, or notches in a component.  The process is continuous and very labor efficient.  Virtually all materials can be roll formed.  Roll forming is a bending operation that is performed at room temperature.