agricultural machinery

The production process is as follows:
1. Reminder of precision casting. Before casting, you should be fully familiar with the process documents of the casting. Before casting, you should understand the casting sequence, required molten steel material, weight and casting mold.
distribution. Check whether the number of ladles, the quality of repairing ladle and the drying and preheating are qualified, and whether the crane is running normally.
2. Check whether the sand box clips and lock box bolts are tight and firm, whether the weight and position of the weight are appropriate, and whether the riser ring, sprue cup, gate plug, etc. are properly placed.
3. Whether the pouring plugs required by the casting sequence and the castings are properly placed. Whether the gate plugs required by the casting sequence, process requirements and casting requirements are properly placed.
4. The air should be entrained immediately after the casting starts, and the air should be entrained while casting. Large castings should ignite the ignition material next to the air outlet. When casting large pieces, pour one or two times from the riser after pouring.
Pry off the thin shell of the riser before pouring.
5. When the molten steel is poured to 1/3 of the height of the riser, put it in the specified quantity. After pouring, the molten steel overflowing from the nozzle and the riser should be removed immediately, and the pouring cup should be removed to facilitate sand falling and casting.
normal shrinkage of the piece.
6. After the molten steel is completely solidified, the mold can be moved. In the later stage of casting, pay attention to the amount of molten steel in the package. For the castings of important parts, the phenomenon of drinking slag is not allowed, and the remaining molten steel is poured into
in the remaining slot (type).
7. The remaining sand mold should be covered with the pouring riser for rearrangement. If the sand mold storage time does not exceed 48 hours, it can be poured normally. If it exceeds 48 hours, it should be checked.
Confirm whether the mold meets the requirements before deciding whether to cast or not.
4. Smelting and pouring: mold shell roasting furnace.
5. Post-cleaning: shell shaker, acid treatment equipment, etc.