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Procision casting equipments air cooled water machine made in china and high quality
Supply high quality and cheap precision casting shell making line .
12.9 grade outer hexagon bolt with thread up to head Half buckle Outer hexagonal square bolt
Product name: casting special coating
• single position: tons per kilogram
• commodity brands: JH-PRODUCTS
• goods no. 1
• color: black, white, red, yellow etc
• composition: special diatomite, which removes 5-8% of the water and organic matter and impurities of diatomaceous earth; AL2O3, Sio2.; Foundry coating suspension agent (lithium base concave soil, organic soil, etc.)
Usage:
Press the coating weight to add 70 percent of the water (1 kg coating + 0.7 kg of water), stir 1 hour after stir to brush (medium speed or low degree stir best, bubble little). The amount of water can be determined by the coating, but not too much. Otherwise the coating is too sparse, the coating thickness can not meet the requirement. The amount of water is too low, the viscosity is large, difficult to brush, and the coating is not easy to even, the thickness is different.
According to the process, brush two and three times. The thickness of the coating can be brushed three times and the thickness of the coating is above 1mm.
The water content of the application is about 80 percent, and it should be stirred at low speed. Proper viscosity, the thickness (0.8 1.1.2 mm) is achieved by applying 2 times.
Four common questions:
1 mechanical adhering sand. This coating high refractoriness, chemical adhering sand will never happen. But the permeability is good, if negative pressure is too high steel can penetrate the coating cause mechanical adhering sand, suggested that negative pressure in a 0.03 ~ 0.04. The coating should be brushed thin and evenly, and the inner gate is covered with a proper thickness.
2 carbon defects. The thin wall casting temperature is low, it is easy to produce corrugated skin, and the flow line is residual carbon and so on. The average temperature can be controlled at about 1550 degrees.
TYPE
General cast iron - casting paint,
Gray cast iron - casting paint,
Ductile iron - casting paint,
Carbon steel - casting paint,
Alloy steel -- casting paint,
High chrome steel - casting paint,
High manganese steel -- casting paint,
Stainless steel - casting paint,
Copper alloy -- casting paint,
Aluminum alloy - casting paint,
Magnesium alloy - casting paint.
Characteristics:
Dry powder environment-friendly coating, it can be used after mixing water, the coating is not flowing well, especially suitable for mass immersion technique. The coating is strengthened, no bubbles, no cracking. After pouring, the coating is flaky. The casting is not sticky, and the surface is clean.
Applicable scope:
It is applicable to die process production.
