All kinds of metal casting mainly include the
use of quality, appearance quality, intrinsic quality.
Use quality refers to the hardware casting under different
conditions, including work endurance ability to wear, corrosion
resistance, resistance to chill shock hot, fatigue, shock
absorption properties and machinability, weldability and process
performance.
Appearance quality refers to the hardware casting surface
roughness, surface defects, size deviation, shape deviation,
weight deviation.
Inner quality refers to the chemical composition of metal
casting, physical properties, mechanical properties,
microstructure and in metal casting internal hole, crack,
inclusion, segregation, etc;
Metal casting quality of mechanical products has great influence
on the performance. Machine hardware casting abrasion resistance
and dimensional stability, directly affects the precision of the
machine tool to keep life; All kinds of pump impeller, shell and
hydraulic parts inner chamber size, type line accuracy and
surface roughness, directly influence the pump and hydraulic
system work efficiency, energy consumption and the development
of corrosion, etc.; Exhaust pipe cylinder block, cylinder head,
internal combustion engine cylinder, piston ring, such as metal
casting strength and resistance to chill shock hot sex, directly
affects the working life of the engine.

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