Gray cast iron is more suitable for machine tool castings
Release time：04-07
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View volume： 72
Why the gray cast iron is more suitable for machine tool castings
All or most of the carbon gray cast iron with flake graphite morphology, fracture in grey color, hence the name, it includes the general grey cast iron (hereinafter referred to as gray cast iron, cast iron, grey cast iron, etc.
Gray cast iron has the certain strength, but low plasticity and toughness, the performance characteristics and the performance of the graphite itself and its existence form in cast iron group. Has good shock resistance, made of grey cast iron machine on the base or frame parts, such as machine can effectively absorb vibration energy; Good lubrication performance; And good thermal performance, it is because of graphite is a good conductor of heat; Grey cast iron of high carbon content, close to the eutectic composition, low melting point, good liquidity, linear shrinkage rate and volume shrinkage rate, smaller casting is not easy to produce craze, therefore suitable for complex machine tool parts and thin wall casting casting structure, such as car of the cylinder block, cylinder head, machine tool column, machine tool bed, etc.
Machine tool castings
Good abrasion resistance and elimination of gray cast iron pieces. Because of graphite in cast iron is good for soothing and oil reservoir, so the wearability. Also, as a result of the existence of graphite, elimination of grey cast iron is better than that of steel.
Grey cast iron cutting process performance is good. Graphite of gray iron is easy to form a chip breaker when machining, so the grey cast iron can be cutting machining is superior to the steel.
And grey cast iron lower prices than other materials, so some big heavy machine gray cast iron castings are selected for processing production.
The influence factors of machine tool castings of high strength cast iron is what
Traditional grey cast iron smelting control direction is low carbon high strength cast iron (C: 2.7 ~ 3.0, Si: 2.0 ~ 2.3, Mn: 0.9 ~ 1.3), although this material can meet the requirements of material m
What are the factors affect the casting casting shrinkage rate
In casting solidification process, its each part size is typically narrowed, casting size smaller percentage, called casting line shrinkage or casting shrinkage rate. Manufacture molds (including core
The development prospects of machine tool industry opening to the outside
Since reform and opening up, China's machine tool industry through the implementation of the "introduction" and "going out" strategy, make the technical level, international trade is growing fast. At
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