metal plate cutting machine standard procedures chart for construction materials


1 Identify the equipment used when cutting cold metal 2 Describe the processes and techniques used when cutting cold metal 3 Identify the equipment used when cutting hot metal 4 Describe the processes and techniques used when cutting hot metal 5 Identify safety practices that should be observed when cutting cold and hot metal Title Standard Specification M 41 10 Author Construction Office Created Date 9/7/ 6 08 14 PMIn some cases the fabricator may purchase materials through a steel service center When this is the case the steel service center must transmit the necessary documentation from the manufacturer to the fabricator 2 2 Cutting and Finishing Steel 2 2 1 What methods are available for cutting steel andThe fact is that once the machine is purchased the buyer senior management rarely validates the claims made during the sales pitch with the shop floor management or operational staff So it’s important for buyers to know the real scrap calculation before purchasing a CNC plate processing line or CNC oxy fuel cutting machine Type 1 Carbon Steel Medium or High carbon steel contains 1 – 1 5% carbon is used as tool material for general machining work since Some additives cromium and tungsten are required to improve wear resistance The steel begins to lose its hardness at about °C Profile Cutting Tolerances Profile cutting tolerance is the slight positional variance that occurs when sheet metal is cut This happens in the position of features diameter of holes inside dimensions of rectangular cutouts or outside dimensions of the part itself Protocase& 39 s standard dimensional tolerance for position inside and outside featured service Laser Cutting Tacoma Steel is the " laser plate cutting" leader in the Northwest We are able to handle everything from gauge material through 1 1/4" steel plate Laser cutting is highly accurate We can consistently save money for our customers by reducing their shop time preparation of parts The Construction Manual contains policies and procedures related to the duties of Caltrans Division of Construction personnel is for information only and is intended as a resource for personnel engaged in contract administration Be alert for new or revised specifications that may affect the current manual guidance for contract administration

Standard vs Stack Cut Geometry Most annular cutters come with Standard geometry These cutters are designed to cut through one piece of steel They offer the fastest cleanest hole producing a slug that looks like a ‘Top Hat’ When the job requires drilling two or more pieces of material cutters with stack cut geometry must be used The Steel Girder Bearing Plate Weathering Steel unpainted Welding Procedure WPS 13 13 1 thru 13 3 Overhang Bracket Welding Procedure WPS 14 14 1 thru 14 3 Steel Girder SIP Strap Welding Procedure WPS 15 15 1 thru 15 3 Pipe Pile Bottom Driving Plate WPS 16 16 1 thru 16 3 Pot Bearing Welding Procedure WPS 17 17 1 thru 17 3building designs or product installations All projects should conform to applicable building codes for that particular area It is recommended to follow all building regulations and standard industry practices Metal Sales Manufacturing Corporation is not responsible for the performance of the roof system if it is not installed inSince every technology has its cost in general 90% of machines used in steel fabrication are equipped with either oxy fuel or plasma Now let’s look at a practical example using 12mm thick plate to further elaborate We are going to perform a simple job Cutting mm x mm plates from a standard size sheet measuring mm x mm There is little slag on the bottom edge and the top edge is only slightly rounded from the preheat flames This surface is ideally suited for many applications without further treatment Oxy fuel cutting is ideal for plates thicker than 1 inch but can be used all the way down to about 1/4 inch thick plate with some difficulty Plasma arc cutting is a great process for cutting mild steel plate offering much higher speeds than oxy fuel cutting but sacrificing some edge quality That is where plasma is tricky Edge quality has a sweet spot that depending on cutting current generally ranges from about 1/4 inch up to 1 5 inches Punching is a cutting process in which material is removed from a piece of sheet metal by applying a great enough shearing ching is very similar to blanking except that the removed material called the slug is scrap and leaves behind the desired internal feature in the sheet such as a hole or slot COLD METAL CUTTING EQUIPMENT Cold metal may be cut with a hacksaw cut off saw band saw bolt cutter file snips shears or a cold chisel Cold metal cutting tools are divided into cate gories depending on their power source hand or power The operator provides the power for operat ing the hand tools while power tools rely on a source12 0 Gas Cutting 40 13 0 Oxy fuel Cutting Procedures 42 13 1 Cutting Attachment Operation 42 13 2 Setting Up 43 13 3 Lighting Up 44 13 4 Closing Down 45 14 0 Oxy acetylene Cutting Techniques 46 14 1 How it Works 46 15 0 Using the Cutting Assembly 48 16 0 Mild Steel Cutting 49 16 1 Thin Steel 49 16 2 Thick Steel 49

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