Sand coated iron mould casting device and casting technology of three-part-box ring type casting

Abstract

The invention discloses a sand coated iron mould casting device and casting technology of a three-part-box ring type casting, and belongs to the field of sand coated iron mould casting. The casting device comprises an upper sand box, an upper mould, a lower sand box and a lower mould. A casting system is arranged on the upper mould, and the device further comprises a middle sand box and a middle mould, wherein the middle sand box is located between the upper sand box and the lower sand box; a columnar middle mould movable block is arranged on the middle mould, and a middle mould inserting block is arranged on the back face of the middle mould movable block; and positioning devices are arranged between the middle sand box and the upper sand box and between the middle sand box and the lower sand box respectively in a matched manner. The casting technology comprises the steps of heating the moulds and the sand boxes, conducting modeling, conducting box assembling, conducting casting, and finally obtaining a casting product. The ring type three-part-box casting is produced through the sand coated iron mould casting technology, the product quality is reliable and stable, the production rate is high, and the size precision is high.

Description

technical field [0001] The invention relates to the technical field of iron mold sand-coated casting, in particular to an iron mold sand-coated casting device and a casting process for three-open box ring castings. Background technique [0002] Iron mold sand-covered casting technology has attracted much attention for its unique advantages, and this technology has also been gradually promoted. However, the high cost of investment in casting equipment in the early stage, and many problems such as casting deformation and cracking caused by repeated thermal expansion and contraction and the impact of the casting environment during use, also make many people dare not get involved easily. [0003] Iron mold sand-covered casting technology is especially advantageous in smaller sizes such as discs, rods, and shafts, which are basically two out of the box. However, for the castings of the ring type and the three-open box, the research on the iron mold sand-covered casting process a...

AI Technical Summary

Problems solved by technology

However, for the castings of rings and three-open boxes, the research on iron mold sand-covered casting technology and casting equipment is still blank.

[0004] The middle part of the ring casting is concave and cannot be released smoothly. If it is cast out of the box, the above problem can only be solved by placing the sand core in the middle. In addition, the more important thing is that the sand core has a large size and a large wall thickness, which is inconvenient to operate and loses the advantages of the iron mold sand coating process.

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