Test platform test platform specifications: 200 × 200-2000 × 4000 (special specifications according to the demand side, drawing production or agreed upon production and processing). Test platform (test plate) Use: Suitable for a variety of inspection, precision measurement of the reference plane; mechanical testing benchmarks for machine tools; dimensional accuracy or shaped inspect parts for deviation, and as close crossed, in the machinery manufacturing also lack the basic tools are not available. Surface quality inspection test platform: with coloring hair test. 0 1 plate on each side of not less than 25 points within a range of 25 mm square, 2 less than 20 points, three less than 12 points. Test platform Precision: According to the national standard verification procedures, namely to 00,0,1,2,3 grade four level. Test platform Material: high-strength cast HT200-300. Face hardness test platform: HB170-240. Surface quality inspection test platform: with coloring hair test. 0 1 plate on each side of not less than 25 points within a range of 25 mm square, 2 less than 20 points, three less than 12 points. Functional test platform (test plate) and crossed platform differences: test platform (test plate) is made with a precision measurement of the reference plane for the production of plant or metering sector; and crossed crossed platform is made with reference to the production of the plane . While these two panels are the reference plane, but their processing methods, plane precision functional role is different. Dedicated to the coloring method of test platform Face scraping required; test platform for other uses Face require scraping, grinding or research; crossed plate surface can be planed. Thus, the plane accuracy test platform above the dash panel. Test plates with coloring assay workpiece flatness or inspection work as an aid to achieve a variety of measurement plays a reference positioning surface effect; crossed platform planes played a role in the work of the scribe. Test platform known as cast iron inspection plate ,, test platform, test bench, bench. Experimental study on iron platform cast iron plate production process proved, whether cast iron or steel flat platform or platforms substance other metals cutting process is cutting the metal layer plastic deformation process tool shear slip under compression. Cast iron platform tool in the process of cutting the cutting edge perpendicular to the cutting mode synthetic cutting movement direction, right angle cut. The cutting edge in the direction of movement is not perpendicular synthetic cutting edge, has become the bevel cutting. To discuss issues of convenience, generally ignores feed affect movement, and the movement of the cutting edge perpendicular to the main direction of cutting speed, right angle cut. The cutting edge is not perpendicular to the main direction of movement speed internet flat cutting to a bevel cutting. Only the main cutting edge for cutting work, and secondary cutting edge does not participate in the work of cutting cutting, a free cut. In the analysis of chip formation mechanism are free-cutting at right angles to observe and study models. Usually deformed iron platform plate cutting process is divided into 3 each deformation zone.