Clay Material Technology Used In Clay Sand Equipment

1. Preparations: 1. Check whether the belts and conveying system of each conveyor are abnormal. Check whether there are foreign objects in the sand mixer. 2. Check whether the conveyor belt is off-track. 3. Check whether the sand preparation and screening machine is abnormal and whether the grounding protection line is perfect. 4. What is the sealing effect of each dust source, whether the vacuum cleaner is blocked, and whether the dust is cleaned every day.

2. Preparation of raw materials: 1. The quality of new sand should meet the requirements in national standards. Before use, moisture content ≤ 3%, mud content ≤ 0.50%, particle size (mesh) 50/100 or 70/140. 2. The ash content of coal powder ≤ 12%, the volatile content ≥ 30-50%, the sulfur content ≤ 2%, the moisture content ≤ 4%, and the ratio of particle size passing 0.106 ≥ 95%. 3. Bentonite uses sodium-calcium base. Process sample wet compressive strength value >100KPA Process sample hot and wet tensile strength value >2.5KPA. 4. The old sand should be screened and magnetically separated to remove debris. The temperature of the old sand should not be higher than 40 degrees Celsius. The humidification system and cooling air volume should be increased in the hot season.

3. Sand mixing 1. Molding sand performance: Wet compression strength: 0.12 — 0.15Mpa Compaction rate: 40% ± 2 Moisture: 3.5-4.0% Air permeability> 150 2. Molding sand ratio: new sand: 5% old sand: 95 % Bentonite: 1.5% Coal powder: 1% Water: appropriate amount 3. Sand mixing process: (new sand + old sand + bentonite + coal powder) Dry mixing for 15 seconds → adding water → wet mixing for 120 seconds → unloading sand for 60 seconds 4. Mix well The clay sand should be fully loosened and recycled. 5. The sand mixed every day is tested by inspectors for its physical properties such as moisture, air permeability, compaction rate, and wet strength. 6. The sand mixer should be idling for 1-2 minutes before mixing to check whether it is normal.

4, matters needing attention: 1. Remove the lower limit of moisture in rainy days, and remove the upper limit in high temperature seasons. 2. Remove the dry sand on the belt before starting the machine. 3. After each shift, clean the sand on the inner wall of the sand mixer. 4. It is not allowed to take samples directly in the sand mixer by hand during the sand mixing process. 5. Before starting the equipment, give a signal and start or shut down the car according to the equipment operation sequence.

The above is the method to improve the production efficiency of clay sand equipment organized by Qingdao Wozhou Machinery for you. This is our conclusion based on years of experience. We hope to increase the profit of the foundry enterprise and reduce the production cost.

For the purchase of our company’s equipment, our company will assign specialized technical personnel to guide the installation and commissioning and train operators to be proficient in equipment operation and simple equipment maintenance and maintenance methods, and provide full tracking services, so we purchase our company’s sand processing equipment There are no worries.

If you need to purchase or understand clay sand processing equipment, please contact us, professionally focus on providing our customers with high quality and low price sand processing equipment.

If you need more information about sand treatment, please inquire or come to Qingdao Wozhou Machinery Factory for inspection and negotiation!