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How To Improve The Energy-saving And Environmental Protection Of Precision Casting Jul 18, 2017



How to improve the energy-saving and environmental protection of Precision Casting

The Precision Casting industry is now focused on energy conservation and environmental protection, so how much do you know about the performance of Precision Casting? Let's look at it specifically:

1. Improve the production rate of Precision Casting parts by optimizing design and optimization process. On the premise of guarantee the quality of Precision Castings, change the gating system, using heat insulating riser can often increase exports, if we can increase the export rate from 60% to 60%, can reduce energy consumption by 14.3%.

2. Adopt high compactness molding machine and modern core technology to Precision Casting quality and reduce machining allowance. The practice proves that high pressure molding can reduce the quality of castings by 3 % to 5 % and the machining allowance can be 2-3mm. Reducing weight not only makes the Precision Casting shop

Energy saving can also reduce the energy consumption of subsequent processing.

Because the preparation method of the coating has a great relationship with Precision Casting, our company has arranged the method for the preparation of Precision Casting.

The composition of the coating is usually first silica sol, and then add wetting agent, add the refractory powder in the mixing, and then add the antifoaming agent. In order to guarantee the quality of the paint, the coating should be more than 24 hours before it is used. The mixing time of the transition layer and the back coating can be less than the surface coating. When the coating is completely new, the stirring time is more than ten hours, and the stirring time can be shortened by half when the new part is new.

Six problems in Precision Casting process

Under the influence of national policy, now many of the precision foundry industrial structure transformation on the energy conservation and environmental protection, the energy saving in the Precision Casting production what are the considerations, the following conclusion: a total of six

1. Improve the production rate of Precision Casting parts by optimizing design and optimization process. On the premise of guarantee the quality of Precision Castings, change the gating system, using heat insulating riser can often increase exports, if we can increase the export rate from 60% to 60%, can reduce energy consumption by 14.3%.

2. Adopt high compactness molding machine and modern core technology to Precision Casting quality and reduce machining allowance. The practice proves that high pressure molding can reduce the quality of castings by 3 % to 5 % and the machining allowance can be 2-3mm. The weight loss not only makes the Precision Casting workshop energy saving, but also reduces the energy consumption of the subsequent processing.

Adopt energy-saving process and organize production. For example, use self-hardening resin sand or surface dry sand drying type to reduce the energy consumption of baking mold. Strict ingredients, proper composition of Precision Casting and effective inoculation scheme are adopted to eliminate the white or hard points on castings to remove the graphitization annealing process. To promote the cast iron, the required elongation under 12% should be obtained in the cast state. The frequency wave harmonic vibration aging process is adopted to remove the stress heat aging process.

4. Save materials and try to reuse them. Because the production of any material requires energy.

5. Precision Casting enterprise scale production, i.e., the output of each casting unit is above 5000t. Because of the large output, the working time of the furnace is long, and the heating energy of the furnace itself can be amortized to the energy consumption per ton of Precision Castings.

6. Improve management level and reduce scrap rate. For example, an annual output of 5000 t precision foundry, a 1% drop in rejection rate is equal to 50 t production of Precision Castings, according to the energy consumption of per ton 400 kgee calculation, a year can save 20 t BiaoMei, also namely Precision Castings per ton lower the energy consumption of 4 kgee.