No-riser casting machine

A casting machine and riser technology, which is applied to casting molding equipment, casting molds, and casting mold components, etc., can solve the problems of high price, high equipment requirements, and inability to realize casting without risers, and achieve high yield and wide application range Wide, the effect of improving the utilization rate of molten iron

Inactive Publication Date: 2014-08-27
BEIJING TIMES RUIZHI TECH TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method often causes shrinkage defects due to fluctuations in molten iron temperature, chemical composition and other factors, and for steel and non-ferrous metals that do not solidify and expand, riser-free casting cannot be realized.
Squeeze casting or liquid die forging in the prior art can also realize riserless casting, but it requires the use of molds or molds made of metal, which cannot adapt to the production of complex castings, and the equipment used is high and expensive

Method used

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Effect test

Embodiment 1

[0034] Riserless casting machine of the present invention, its overall structure is made up of top beam 1, middle beam 4, bottom beam 13, pressure plate 11, floating roller table, guide post 5, compression cylinder 2, feeding cylinder 3 and sand box.

[0035] The top beam 1, the middle beam 4 and the bottom beam 13 are box structures with good rigidity welded by steel plates and are parallel to each other.

[0036] The guide column 5 is made of hollow round tubular steel, with threads at both ends, perpendicular to the bottom beam 13, the top beam 1 and the middle beam 4, passing through the middle beam 4, and the two ends are connected to the top beam 1 and the bottom beam respectively. The beams 13 are firmly connected to form a rigid frame structure.

[0037]The press plate 11 is fixed on the lower plane of the middle sill by T-shaped bolts, and an elastic buffer pad 9 is clamped between the press plate 11 and the middle sill 4 to prevent the impact force from crushing the ...

Embodiment 2

[0044] The riserless casting machine of the present invention has an overall structure consisting of a top beam 1, a middle beam 4, a bottom beam 13, a pressure plate 11, a floating roller table, a guide column 5, a compression cylinder 2, a feeding cylinder 3 and a special sand box.

[0045] The top beam 1, the middle beam 4 and the bottom beam 13 are cast iron box structures with good rigidity and are parallel to each other.

[0046] The guide column 5 is made of solid cylindrical steel, with threads at both ends, perpendicular to the bottom beam 13, the top beam 1 and the middle beam 4, passing through the middle beam 4, and the two ends are connected to the top beam 1 and the bottom beam respectively. 13 are firmly connected to form a rigid frame structure.

[0047] The press plate 11 is fixed on the lower plane of the middle sill by T-shaped bolts, and an elastic buffer pad 9 is clamped between the press plate 11 and the middle sill 4 to prevent the impact force from crus...

Embodiment 3

[0054] The riserless casting machine of the present invention has an overall structure comprising a top beam 1, a middle beam 4, a bottom beam 13, a pressure plate 11, a floating roller table, a guide column 5, a compression cylinder 2, a feeding cylinder 3 and a sand box.

[0055] The top beam 1, the middle beam 4 and the bottom beam 13 are box structures with good rigidity welded by steel plates and are parallel to each other.

[0056] The guide column 5 is made of hollow round tubular steel, with threads at both ends, perpendicular to the bottom beam 13, the top beam 1 and the middle beam 4, passing through the middle beam 4, and the two ends are connected to the top beam 1 and the bottom beam respectively. The beams 13 are firmly connected to form a rigid frame structure.

[0057] The press plate 11 is fixed on the lower plane of the middle sill by T-shaped bolts, and an elastic buffer pad 9 is clamped between the press plate 11 and the middle sill 4 to prevent the impact ...

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Abstract

The invention relates to the field of casting, and particularly discloses a no-riser casting machine. The casting machine comprises a top beam, a bottom beam, a guide column, a feeding mechanism, a compaction mechanism, a sand box and a roller table. The feeding mechanism is used for feeding when solidifying a casting in the sand box; the compaction mechanism is used for compacting the sand box; the sand box is used for making a casting mould, and is placed in the set position on the floating roller table after combined pouring; a compaction cylinder pushes a middle beam to move down; a sprue plug on a pressure plate enters a runner to close the runner; and a feeding cylinder drives a pressure head to move down and enter a liquid storage cavity of the sand box to continuously apply pressure to the metal liquid in the liquid storage cavity until the whole casting is completely solidified and retracts. The no-riser casting machine provided by the invention has the advantages of high yield of casting technology, stable casting quality and wide application range.

Description

technical field [0001] The invention relates to a casting machine, in particular to a riserless casting machine. Background technique [0002] Traditional casting must set a riser large enough to feed according to the principle of sequential solidification, otherwise it is difficult to eliminate shrinkage defects. In this way, not only the process yield is only 60-70%, but also the riser needs to be cut and remelted, which brings repeated loss of manpower, electric energy and materials. In the existing invention technology, the method of no-riser casting of nodular cast iron is to realize the no-riser casting by carefully designing the size of the inner runner so that it solidifies before graphitization and expansion, and fully utilizes the self-expansion effect of nodular cast iron solidification process . This method often causes shrinkage defects due to fluctuations in molten iron temperature, chemical composition and other factors, and riser-free casting cannot be real...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/08
Inventor 杜占军邢书明
Owner BEIJING TIMES RUIZHI TECH TRADE
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