Material is QT450

Slurry sealing layer: it is to improve the compressive strength of the formwork avoid the sand falling on the surface. After the reinforcement layer of the final structure of the formwork meets the requirements of dryness, it is required to carry out the application of slurry instead of sand. Then, it is sent to the dry manic room of the structural reinforcement layer for more than 10 hours.

common problem:

Zinc alloy die casting factory strictly controls the environmental humidity, temperature, wind speed the viscosity of building coating in dry room.

It is necessary to carefully conscientiously carry out the actual operation of the overall surface layer the joint layer, so as to ensure that the slurry is stained in an all-round way, the sand is sprinkled timely the drying is impetuous.

In the slurry of the whole surface layer, it is allowed to infiltrate the mold group after sanding.

Before applying the next layer, be sure to blow off the previous layer of unnecessary floating sand.

The drying rate of the whole surface layer the joint layer of the high quality EPC casting is suitable for too fast, the drying time is suitable for too long. Prevent cracks other defects.

In the actual operation, the safety protection of both eyes the safety of machinery equipment should be done well. Ensure production safety without accidents.

Do a good job in the original record of the actual operation experiment (according to the temperature environmental humidity in the mold base car when recording) as the standard.

Practical operation rules of dewaxing process

Performance parameters of dewaxing machine equipment

Main parameters of automatic steam generator:

How much is the larger steam output: 0.75t/h (750KG / h)

Design scheme working pressure: 0.8MPa

Pressure: 0.7MPa

Total area of heat conduction: 9.8m2

Steam temperature: 169.9 ℃

Main parameters of steam dewaxing kettle:

Design scheme working pressure: 1.0MPa

Pressure: 0.75mpa

Design temperature: 183 ℃

Application temperature: 135 ℃ - 160 ℃