6 things to watch out for in precision casting

Due to the influence of the national policy, the industrial structure of precision foundry is now a big change in the energy saving, environmental protection, energy saving and other precision matters to pay attention to what casting production, the following six key summary:

1. Optimize the planning and process, and advance the output of the investment casting process.On the premise of ensuring the casting quality and improving the casting system, the selection of thermal insulation riser can generally advance the export rate, the export rate from 60% to 70%, can reduce the energy consumption by 14.3%.

2. Choose the central technology of high compression molding machine and modern system to reduce casting quality and reduce machining allowance as much as possible.The practice has proved that the quality of high pressure molding and casting is lower than that of manual modeling, the general machine of modeling reduces by 3% ~ 5%, and the machining allowance can also be maintained at 2-3mm.Reducing weight can not only save energy in precision casting workshop, but also reduce energy consumption in subsequent processing.

3. Reasonable production organization in the process of energy saving.Such as: resin self-hardening sand or surface monotonous replacement clay sand drying application, energy saving monotonous mold;Strict ratio, determination of suitable components, precision casting using family planning useful, casting eliminating white or hard spots on the graphite annealing process revocation;Ductile iron implementation, extension in 12% of the requirements should be cast;As much as possible frequency wave harmonic vibration aging technology is applied to eliminate the stress thermal aging process.

4, save materials, try to reuse.The production of any material requires energy consumption.

5. Large-scale production of precision casting enterprises, that is, the output per unit is higher than 5000t of casting.Because the enterprise produces, the working time before furnace is long, the energy consumption of heating speed furnace can be greatly reduced in energy consumption per ton of casting.

6. Improve the management level and reduce the rejection rate.For example, the annual waste rate of 5000t precision casting plant decreased by 1%, which is equivalent to the output of 50 tons of precision castings. The energy consumption of 400kgee per ton is calculated, which can save 20 tons of standard coal/ton per year and reduce the energy consumption of 4kgee precision casting.