Affected by national policies, now manyDongguan Precision CastingThe industrial structure is shifting towards energy conservation and environmental protection. So what are the precautions for energy-saving production in precision casting? The following summarizes a total of six points:

1. Use optimized design and optimized technology to improve the production rate of precision castings. Under the premise of ensuring the quality of precision castings, changing the gating system and using heat-generating risers can generally increase the export rate. If the export rate can be increased from 60% to 70%, the energy consumption can be reduced by 14.3%.

2. Adopt high compactness molding machine and modern core-making technology to reduce the quality of castings and reduce the machining allowance as much as possible. Practice has proved that high-pressure molding can reduce the quality of castings by 3%-5% compared with manual molding and ordinary machine molding, and the machining allowance can also be maintained at 2-3mm. The weight reduction not only saves energy in the precision casting workshop, but also reduces the energy consumption of subsequent processing.

3.Dongguan Precision CastingAdopt energy-saving technological process and rationally organize production. For example, use self-hardening resin sand or surface dry type instead of clay sand drying type to save the energy consumption of drying the mold; strict ingredients, determine the appropriate composition of precision castings, take effective incubation plans, and eliminate castings in the as-cast state. To eliminate the graphitization annealing process; promote as-cast ductile iron, and require that the elongation after fracture is below 12% should be obtained in the as-cast state; try to use the frequency harmonic vibration aging process to remove stress reduction Thermal aging process.

4. Save materials and work hard to reuse. Because the production of any material requires energy.

5.Precision cast steelLarge-scale production of enterprises, that is, the output of each casting unit is above 5000t. Because of the large output of the enterprise, the working hours of the furnace are long, and the heating energy consumption of the furnace itself can be greatly reduced by spreading the energy consumption per ton of precision castings.

6. Improve the management level and reduce the rejection rate. For example, for a precision casting plant with an annual output of 5,000 tons, every 1% drop in the scrap rate is equivalent to an additional 50 tons of precision castings. Calculated at 400 kgee per ton of energy consumption, 20 tons of standard coal can be saved a year, which means that every ton of precision castings is reduced. Energy consumption of 4kgee.