Special sand for bathroom-LIANXIN SAND GROUP

Special sand for bathroom

In view of the problem of sand for bathroom casting copper, Lianxin Casting Sand Group, together with Wuhan University of Technology and Huazhong University of Science and Technology, has successfully developed a "special sand for bathroom casting copper wet process". Greatly reduce sand core problems and reduce casting defects.

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Special sand for bathroom

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1. at present, the bathroom cast copper sand generally exists the following dilemma:

· The quality of silica sand fluctuates greatly;

· There are many problems with sand core: for example, the solidified layer of sand core is uneven, easy to absorb moisture, easy to break, loose sand core, large amount of gas, etc;

· There are many casting defects: such as sand sticking in the inner cavity, pores, shrinkage cavity, deformation, etc.

2. in view of the problem of sand for bathroom casting copper, Lianxin Casting Sand Group, together with Wuhan University of Technology and Huazhong University of Science and Technology, successfully developed the "special sand for bathroom casting copper wet process". Greatly reduce sand core problems and reduce casting defects.

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3. "bathroom cast copper wet special sand" advantage:

Advantage one: high cleanliness of the silica sand surface, conducive to resin bonding, sand core strength. At the same time, the amount of resin added can be reduced by 30-50%.

Advantage two: high roundness of silica sand type, conducive to sand core molding, sand core more dense, smooth casting cavity. At the same time, the sand core exhaust channel is smooth and high permeability.

Advantage three: smooth air channel, conducive to heat transfer to the sand core inside, improve the sand core collapsibility.

Advantage four: silicon sand interface treatment, the use of coating technology, the introduction of refractory materials, effectively reduce the tendency of casting cavity sand.

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