What are the energy-saving production methods of precision casting?

As we all know, molds are often accidentally scrapped during the casting process. The formation of scraps not only delays employees' time, but also wastes mold materials. However, energy-saving production has been launched in China and is affected by policies. Currently, many precision castings in Dongguan The structure of the industry is changing to energy conservation and environmental protection. What are the energy-saving production methods of precision casting? The summary is as follows:

Save materials and reuse them as much as possible. Because producing any data requires energy consumption.

2. Large-scale production of precision casting enterprises, that is, the output value of each casting unit is more than 5,000 tons. Due to the large output value of the enterprise and the long working hours of the furnace, the heating energy consumption per ton of precision castings can be greatly reduced.

Improve the management level and reduce the scrap rate. For example, for a precision casting factory with an annual output of 5,000 tons, every 1% reduction in the scrap rate is equivalent to the production of 50 tons of precision castings. Calculated based on the energy consumption of 400kg per ton, it can save 20 tons per year. Coal, that is, each ton of precision castings can reduce energy consumption by 4kg.

4. Improve the process productivity of Dongguan precision castings by optimizing design and technology. Changing the gating system and using heating and insulation risers can generally increase the exit rate while ensuring the quality of precision castings. If the exit rate can be increased from 60 percent to 70 percent , energy consumption can be reduced by 14.3%.

5. The use of high-tightness molding machines and modern core-making technology can reduce the quality of castings and reduce machining allowances. Practice has proven that high-pressure molding can make the quality of castings better than process molding. Generally, machine molding reduces the processing cost by 3% to 5%. The margin is kept at 2-3 mm. Losing weight not only saves energy in the precision casting workshop, but also reduces energy consumption in subsequent processing.

6. Adopt energy-saving technology and rationally organize production. For example, use self-hardening resin sand or appearance dry type instead of clay sand dry type to save energy consumption of dry casting molds; strict ingredients. Determine the appropriate composition of precision casting steel. Use effective incubation Plan to eliminate white spots or hard spots on castings and cancel the graphitization annealing technology in the casting state; the implementation of casting ductile iron requires that the elongation after fracture of the ductile iron is less than 12 percent in the casting state; try to use frequency harmonics Oscillation aging technology, removal of stress-reducing thermal aging technology.

Learning these things will increase the strength of the enterprise and save costs.