What is the energy-saving production method of precision casting?

We all know that usually during casting, mold scrapping occurs unexpectedly. The formation of scrapping not only delays employees' time, but also wastes mold materials. However, now China has launched energy-saving production and has been affected by policies. At present, the structure of many precision casting industries in Dongguan is transforming into energy-saving and environmentally friendly. So what are the energy-saving production methods of precision casting? They are summarized as follows:

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

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 of each ton of precision castings by the furnace itself can be greatly reduced.

3. 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 percent 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, 20 tons can be saved per year. Standard coal, that is, each ton of precision castings can reduce energy consumption by 4kg.

4. The process productivity of Dongguan precision castings is improved by optimizing the design and process. On the premise of ensuring the quality of precision castings, changing the gating system and using heated and insulated risers can generally increase the exit rate. If the exit rate can be increased from 60% To 70 percent, energy consumption can be reduced by 14.3 percent.

5. Use high-tightness molding machines and modern core-making technology to reduce the quality of castings as much as possible 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 3% to 5%. , the machining allowance is maintained at 2-3 mm. Weight reduction can not only save energy in the precision casting workshop, but also reduce 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 The incubation plan is to eliminate white spots or hard spots on the casting in the casting state and cancel the graphitization annealing process; the implementation of casting ductile iron requires obtaining ductile iron with an elongation after fracture of less than 12 percent in the casting state; try to use frequent Harmonic oscillation aging process and stress-reducing thermal aging process.

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