What is the scope of application of coated sand

What is the scope of application of coated sand?

With the continuous expansion of the application range of coated sand, different casting processes, different material requirements and different structures of castings put forward different performance requirements for coated sand, then, what is the application range of coated sand?

What is the scope of application of coated sand?

(1) Ordinary coated sand

Electrolyxa thermoplastic phenolic resin, calcium stearate, no related additives. Suitable for general production of iron castings.

(2) Coated sand with high strength and low gas evolution

It is an updated product of ordinary coated sand, which is prepared by adding relevant additives and adopting new technology. Its strength is higher than ordinary sand. The height of the coated sand is greater than 30%, and the gas emission is significantly reduced, which is suitable for the production of complex precision cast iron parts.

(3) High temperature coated sand

It has the characteristics of high temperature strength and long heat resistance time, and is suitable for the production of complex thin-walled iron castings such as automobile engine block, cylinder head, container angle, etc.

(4) Collapsible coated sand

It has good strength and excellent low-temperature collapsibility, and is suitable for the production of non-ferrous metal castings.

(5) Other coated sand with special requirements.

Coated sand for centrifugal casting, chilled coated sand, wet coated sand, anti-sticking sand, anti-vein sand, anti-orange peel coated sand, etc.

What are the operation processes of coated sand core shooting machine?

1. before operation of coated sand core shooting machine

1. Remove the obstacles that hinder the normal operation of the core shooting machine equipment.

2. Lubricate the equipment according to the lubrication card.

3. Check whether the fasteners of the key parts of the core shooting machine are fastened. If they are loose, tighten them.

4. Check whether all cutting door handles are in the static position.

5. Open the main cutting of compressed air and conduct no-load test operation of the core shooting machine. In this process, check whether the movement of the tissue is normal, and check whether the pipes of each cutting door are leaking.

2. in the process of operating the coated sand core shooting machine

1. After the core shooting machine is started, the operator shall not leave the work post without authorization, and shall concentrate on the operation according to the process procedure. But it is not allowed to operate two cutting doors at the same time.

2. Always pay attention to the operation of the core shooting machine, with poor lubrication, loose fasteners, damaged parts, or blocked pipes. Leakage and other abnormal conditions, should immediately stop processing, if necessary, notify the maintenance personnel to repair.

3. In the production process, if the core shooting machine is found to have weaknesses in shock, compaction, translation or clamping, the maintenance personnel should be notified to check and repair.

4. Always keep the shock piston in a lubricated state, blow off the sand on the piston regularly, and then spray the lubricating oil.

5. When hanging the sand box, the sand box is not allowed to collide with the model or cut the door handle, so as not to damage the model or cause misoperation.

6, in the production process, often to remove the core shooting machine and around the sand, to prevent the sand into the cylinder.

7. In case of core blasting machine accident, the equipment shall be stopped immediately, the site shall be reserved, and the equipment shall be reported to relevant departments for inspection, analysis and treatment.