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Cast iron platform

The characteristics of gray cast iron parts: wear resistance and good shock resistance, because of graphite in the cast ironis conducive to lubrication and oil storage, so good wear resistance. Similarly, due to the existence of graphite, the shockresistance of gray cast iron is better than that of steel. Process performance is good, because of the high carbon content ofthe gray cast iron, close to the eutectic composition, so relatively low melting point, good fluidity, shrinkage of small, so it issuitable for casting of complicated structure or thin-walled castings, the graphite machining easy formation of chip breaking,so grey cast iron can machinability is superior to that of steel.

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Cast iron platform

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Product description

　The cast iron plate is also called cast iron platform. The appearance is basically box type. The working surface has rectangular, square and round shapes. The material is HT200-300, QT400-600. It adopts scraping process, and the working surface can process V shape and T. Shape, U-shaped groove, dovetail groove, round hole, long hole, etc., are plane reference measuring tools for workpiece, equipment inspection, scribing, assembly, welding, assembly, and rivet welding.

Artificial annealing: aging treatment in a tempering kiln after 600-700 degrees high temperature annealing.

It mainly includes the thickness of the working face on the platform, the thickness and height of the side wall, and the thickness, height and density of the bottom ribs. It mainly includes the thickness of the working face on the platform, the thickness and height of the side wall, and the thickness, height and density of the bottom ribs.

Porcelain platform 0 and 1 platform are not allowed to have pores and trachoma, and 2 and 3 grades can be filled with stomatal trachoma with the same material as the platform. Note: The hardness of the filler must be lower than the hardness of the platform itself.

Cast iron plate can also be called cast iron platform can be used to test the measurement of mechanical parts flatness, parallelism, straightness and other geometric tolerances, can also be used for marking and measurement of precision parts, experiments, welding, welding, foundation, work Taiwan, etc., the working surface is scraped.

Cast iron platform material: high-strength cast iron HT200-300, after two manual treatments (artificial annealing 600 degrees - 700 degrees and vibration aging), the product has stable precision and good wear resistance.

The overall specification of the cast iron platform is 4m×8m. If it is larger than this specification, it can be spliced in multiple pieces. After wear, it can be repaired and restored to its accuracy. The flatness of the parts can be verified by coloring method, which is accurate, intuitive and convenient. . The table seat and the workpiece are pushed smoothly on the cast iron plate which has been scraped, and the workpiece is not smooth, which is convenient for measurement and ensures measurement accuracy.

The cast iron quality and heat treatment quality of the cast iron platform have a great influence on the performance of the flat plate, or the working surface is deformed due to the residual internal stress; or the precision cannot be maintained due to the inability to wear; or the value is not small due to the difficulty of scraping. Roughness. Therefore, the use of cast iron plates must pay attention to the choice of cast iron materials, using aging treatment and other methods to eliminate the residual stress of cast iron plates.

specification	Accuracy class μm					specification	Accuracy class μm
specification	Level 0	Level 1	Level 2	Level 3	Fine planing	specification	Level 0	Level 1	Level 2	Level 3	Fine planing
100×100	4	8	26			2500×2500			72	180	270
200×100	5	10	20			3000×1000				168	248
200×200	5	10	20			3000×1500				174	154
300×200	6	12	24			3000×2000				184	275
300×300	6	12	24			3000×2500				186	276
400×300	6	12	24			3000×3000				210	300
400×400	6	12	24			4000×1000				210	300
500×300	6	12	24			4000×1500				210	300
500×500	7	14	28			4000×2000				219	310
600×400	7	14	28			4000×2500				228	340
600×500	7	14	28			4000×3000				240	360
800×500	8	16	32	80		5000×1500				249	370
800×600	8	16	32	80		5000×2000				255	375
900×600	8	16	32	80		5000×2500				264	390
1000×750	9	18	36	90		5000×3000				287	420
1000×1000	10	20	39	96		6000×1500				287	420
1200×1000		20	39	96		6000×2000				293	430
1500×1000		24	48	120		6000×2500				300	450
1500×1500		25	50	125		6000×3000				308	460
2000×1000		26	52	129		8000×1500				366	500
2000×1500			56	140		8000×2000				370	520
2000×2000			60	152	230	8000×2500				375	530
2500×1500			64	152	230	8000×3000				382	570
2500×2000			68	168	248