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The excellent properties of jewel sand play the role of binder

The excellent properties of jewel sand play the role of binder

For sand casting, the strength of the core sand is an important control index. How to obtain the core sand strength required by the process economically and efficiently, after the binder is determined, the type and particle size distribution of the original sand are very critical. Whether the selection of raw sand is reasonable or not is also related to whether the bonding effect of the binder can be exerted as much as possible, so as to reduce the amount of binder, improve the quality of castings, reduce the cleaning workload, and reduce waste emissions.

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2023

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07

Characteristics and Application of Ceramsite sand

Characteristics and Application of Ceramsite sand

The advantages of quartz sand are widely distributed and low cost; but its disadvantages are also quite obvious: first, the expansion coefficient is large, and the casting precision is low; second, the surface of the casting is seriously sticky sand, and it is difficult to clear sand. The reason is that Shi Ying will have a variety of homogeneous and heterogeneous crystals at different temperatures, with large volume changes. Limited by the refractoriness (the refractoriness of quartz sand is between 1400-1700 ℃), the local parts of the casting (holes, grooves, and parts where hot joints are concentrated) stick to sand seriously, making it very difficult to clean. The above disadvantages are particularly serious in the production of large steel castings.

25

2023

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07

Why is Ceramsite sand used in lost foam casting?

Why is Ceramsite sand used in lost foam casting?

Ceramsite sand technology has matured in China in recent years. Although there is no industry standard in the country at present, with the continuous development of lost foam casting technology in recent years, the efforts of the majority of lost foam casting workers, the original and auxiliary materials used in lost foam casting, Process equipment, jewel sand production and technical management, etc., have fully adapted to the requirements of lost foam casting production. At present, the domestic foundry manufacturers have a number of different sizes of lost foam casting production line online production. Among them, there are many types such as "simple" type (excluding automatic sand treatment) and "automatic" type (except for placing models and pouring manually). However, regardless of the type, the matching of process equipment must be calculated when designing the lost foam casting production line. However, few people are involved in the current domestic technical data.

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2023

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07

Application of jewel sand in the production of engine castings

Application of jewel sand in the production of engine castings

Engine casting oil channel, water channel core production, the use of treasure sand, gas generation is less, less tendency to produce pores, to avoid casting leakage, while conducive to the oil channel sand.

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2023

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07

What are the uses of Ceramsite sand?

What are the uses of Ceramsite sand?

In the casting production process, most of the current domestic foundry enterprises have been in the sand selection has been improved, abandoned the traditional low-cost quartz sand or magnesium olivine sand, and the use of jewelry sand to improve the casting problem, so jewelry sand has become the current more popular raw materials, loved by many enterprises.

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2023

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