1, cast iron plate flat work surface should not have rust, the appearance of defects scratches, bumps and other effects used. 2, cast iron plate flat work surface should not have sand holes, pores, cracks, slag and Shrinkage other casting defects. each casting surface should be thoroughly cleared the sand, and the surface smooth, painted solid, each duty shall be rounded blunt edge. 3, set in a cast iron plate opposite sides of the plate, should install the handle or lifting position, thread hole or cylindrical bore. settings lifting position should be considered to minimize the distortion caused by lifting. 4, cast iron flat plate should be treated by the stability and demagnetization. 5, cast iron plate flat working surface hardness should be HB170-220 or 187 between -255. 6, the main test items A, iron plate material and surface hardness .B, shape position tolerances, including nominal size, squareness tolerances .C, appearance .D, flatness .E, contact spots .F, plane fluctuation .G, Face allowed deflection .H, surface roughness. 7, precision parameter. 3 flat spots requirements are not specified .1 level contact to request access to the cast iron plate at any number of spots less than 25 × 25mm flat 20 Point .2 grade cast iron plate number to request access to spots less than 12 points within any 25 × 25mm flat iron plate size: 100 * 100 - ** 0 * 8000 (** specification drawings produced according to the demand side.) cast iron plate , the basic platform uses: Cast iron platform for a variety of inspection, precision measurement reference plane for dimensional accuracy or conduct mechanical testing machine measuring reference, check parts of the deviation, and make precision crossed, is not in the machinery manufacturing lack of basic tools and materials handling iron platform: cast iron plate material for high-strength cast iron HT200-300, face hardness HB170-240, after two manual processing (annealing 600 degrees -700 degrees artificial and natural aging 2-3 years ) so accuracy and stability of the product, wear resistance precision cast iron plate: cast iron plate according to the national standard verification procedures, namely 0,1,2,3, fine planing five levels. 

keywords: Cast iron plate, T-slot platform, crossed platforms, welding platform, floor boring machine table, assembly platform,