Matters to be noted in the production of recycled sand equipment

Matters to be noted in the production of recycled sand equipment
Reclaimed sand equipment occupies a high proportion in the foundry machinery industry and also plays an important role. Reclaimed sand equipment is a complete set of production line, which can handle several operations. The performance of the recycled sand processing production line is also very good. It can be used to process precision castings and auto parts with high production efficiency and low scrap rate. It is favoured by foundry owners.
Due to the complexity of the sand treatment process, the heavy workload of recycled sand treatment and transport, and the harsh environment, the mechanisation of the sand treatment process is an important part of foundry production. The main task of the sand treatment department is to provide qualified sand and core sand for the core department.
Matters to be noted in the production of recycled sand equipment:
1、Regularly carry out dust removal and dust prevention work, regularly check whether the dust collector is running normally, and replace the dust bag which is damaged or used for a long time. To avoid excessive dust affecting the quality of coated sand.
2, improve the utilisation rate of old sand, the regeneration of old laminating sand shows the use of resources and recycling, reduce casting waste, turn old sand into raw materials, to achieve recycling, reduce the pollution of the old sand on the environment, saving raw materials at the same time. Improve bonding strength, reduce the amount of phenolic resin.
3, pay attention to the ambient temperature: regenerated sand silica siloxyl bond becomes more active, improve the coating properties of phenolic resin, thus improving the sand and resin bonding force, preventing casting slag. Adjustment of the ambient temperature can improve productivity, reduce sand damage and casting defects, reduce the amount of resin added to save costs and reduce environmental pollution.
Whether the installation of dust removal system of recycled sand equipment is reasonable directly affects the content of micro-powder in recycled sand. The recycled sand processing line plays a decisive role in the air permeability of the sand mould and resin dosage. Accurately calculate the resistance, air volume, air speed and air pressure of each component of the dust removal system. After the dust removal system is installed, accurately adjust the wind speed of picking up fine powder at each dust removal point.
1, processing allowance: hardened recycled sand casting mould rigidity, high dimensional accuracy, not easy to deform. Therefore, in the selection of process parameters, you can choose a smaller machining allowance to reduce the metal solution. Consumption and machining costs can improve the dimensional accuracy of castings.
2, crystalliser surface roughness: crystalliser surface roughness plays a decisive role in the surface roughness of regenerated sand castings, so as far as possible to reduce the surface roughness of the crystalliser is to obtain high-quality important measures castings.
3, draw mould slope: regenerated sand equipment has a certain hardening strength, let small, out of the mould friction. , If it is damaged when removing the mould, it is more difficult to repair. When using its shape, should be based on the actual production and product structure, increase the mould pull-out slope, so that the mould is smoothly pulled out, improve the quality of regenerated sand castings. , will be more and more attention, the production process of recycled sand has also been rapid development, more foundry manufacturers also began to choose recycled sand production line.