CN2043900U - Teeming iron ball without riser and/or feeder with automatic sealing machine - Google Patents

Abstract

The utility model discloses a teeming iron ball without riser and/or feeder with automatic sealing machine. When ductile iron is solidified, the volume expands; a metal mold which can prevent and converse the expansion of the ductile iron as a feeding is of high hardness. Because of the reasons, the ejected iron ball with compact structure has no gate and feed and no shrinkage. A self-sealing vacuum handling device for die-casting ductile iron by adding magnesium and low rare earth is used, the air cylinder of the device is discharged, a pressing machine is arranged and the ductile iron ball can be die-cast. The basic principle of the pressing machine of the utility model is same to that of the high pressure section of a mechanical and high-speed molding machine.

Description

Teeming iron ball without riser and/or feeder with automatic sealing machine

The utility model relates to a kind of automatic sealer vacuum and adds magnesium and add low rare earth and handle spheroidal graphite cast-iron, use upper-lower seal forcing press pressure injection riser-free then and have the cast gate nodular cast iron balls to replace steel ball, particularly large-scale production nodular cast iron balls to replace steel ball to be applied to the equipment of smelter ore dressing plant and cement industry.

Big-and-middle-sized smelter ore dressing plant needs the steel ball thousands of tons of to tens thousand of tons every year, the cement industry in the whole nation approximately needs 90,000 tons of steel balls, the mechanical performance of spheroidal graphite cast-iron approaches steel, 1200 yuan of steel ball valencys per ton, 600 yuan of nodular cast iron balls valencys per ton, current steel are in short supply, so replace steel ball with nodular cast iron balls, very big economic worth arranged.But the casting nodular cast iron balls has such problem, the method of casting nodular cast iron balls according to Jinchuan company mechanical repair plant in the past is with the clamp locking mould up and down of manually tightening up a screw, the utilization rate of metal has only 70%, have 30% to consume on dead head, the iron ball that diameter is 60 millimeters just has more than 1,000 for one ton, the cleaning dead head is pretty troublesome, has all stopped production.

In order to promote nodular cast iron balls, 82 years 1 phases of magnesium iron magazine, (Guangdong science and technology publishing house) reported " middle manganese abrasion-resistant nodular cast iron spare " national standard authorization meeting, point out: if national cement industry all adopts nodular cast iron balls, can be country every year and save about 50,000,000 yuan, economic benefit is very big.Volumes such as Northeast Polytechnic College, cast iron and fusing thereof (metallurgical industry publishing house, version in 1978) are pointed out, volumetric expansion during ductile iron solidification, if casting mold has enough rigidity, graphite generates the expansion that causes and inwardly acts on, can improve the compactness of foundry goods, eliminate shrinkage porosite, be well suited for permanent mold casting.The basic knowledge of the spheroidal graphite cast-iron that Guan Hongye etc. write (guangdong edition 1980) is pointed out, agricultural machinery factory, Jiamusi, Heilungkiang, expansion is converted into the principle of feeding according to ductile iron solidification, adopt the success of rigidity casting mold head-free casting spheroidal graphite cast-iron, shrinkage cavity and shrinkage porosite have been eliminated, obtained the foundry goods of dense structure, but their foundry goods has cast gate, they do not solve the iron ball riser-free problem of casting out.Because of pouring into a mould have 30,000 of 60 millimeters of 30 tons of iron ball diameters every day, so the nodular cast iron balls of pressure injection riser-free is extremely to be solved.

The purpose of this utility model is the equipment that a kind of pressure injection riser-free will be provided and the cast gate nodular cast iron balls is arranged, and it comprises that Zhang Ruilong goes up the automatic sealed vacuum of introducing of nodular cast iron balls at 83 years 2 phases new technology new technology magazine (National Defense Industry Press) and adds forcing press up and down and the injection molding that magnesium adds low rare earth processor repacking.This not only eliminates shrinkage cavity and shrinkage porosite, and the nodular cast iron balls riser-free that comes out of pressure injection, solves cleaning dead head difficult problem.

Utility model is achieved in that automatic sealed vacuum shown in Figure 1 is added magnesium to be added low rare earth processor (nineteen eighty-three magazine deliver) repacking and become forcing press up and down.Adorn 100 to 400 depression bars on the platen that connects with the upward pressure machine.Adorn 100 to 400 depression bars on the platen that connects with the downforce machine, the end of depression bar is that curve cuts lid, the spherical cavity cross section that curve cuts lid and middle mould in conjunction with the time just in time be a complete spheroid.Three metal patterns of upper, middle and lower are arranged, and each metal pattern has 100 to 400 holes.Following metal pattern both sides have under the bridge subrepresentation of T font is fixed on, and the metal pattern contact position has seam.After molten iron carries out application of vacuum and spheroidising through device shown in Figure 1.Requirement according to mould among Fig. 2 quantitatively pours in the metal pattern, and the upward pressure machine drives upperpush rod toward pressing down, and slings after solidifying and goes up middle mould, and the downforce machine drives down-pressed pole and ejects iron ball, just casts the nodular cast iron balls of riser-free.

The utility model is because volumetric expansion during ductile iron solidification (existing document record), and metal pattern has enough hardness to stop to expand and is converted into feeding, makes the iron ball riser-free that casts out, and no shrinkage cavity makes dense structure.Because of using the machine pressure injection, so productivity ratio height, cost is low, the molten iron utilization rate is (manual casting method molten iron utilization rate is the highest has only 70 percent) absolutely, without labor cleaning's dead head, the magnesium iron ball reduces cost 600 yuan than steel ball is per ton, so be applied to 20,000 tons of iron balls in ore dressing plant of large-scale metallurgical enterprise one by one every year, can save 12,000,000 yuan.Be applied to national cement industry and can save 50,000,000 yuan every year.

The concrete structure of utility model is by following embodiment and accompanying drawing thereof, and Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 provide.

Fig. 1 to Fig. 5 is the profile according to the automatic sealer pressure injection nodular cast iron balls various device that the utility model proposes.The forcing press up and down that Fig. 2 to Fig. 5 connects is the fly press according to Fig. 1 repacking.

Describe details and working condition in detail below in conjunction with Fig. 1 to Fig. 5 according to the concrete equipment that the utility model proposes.

This equipment comprises that automatic sealed vacuum adds the forcing press up and down that magnesium adds low rare earth processor (Fig. 1) repacking, upper, middle and lower metal pattern, (Fig. 2 to Fig. 5) such as upperpush rod and down-pressed poles.The equipment of Fig. 1 has: involutory watt (1), garden bevel gear (2), thrust bearing (3), guide rod (4), drving sprial (5), nut (6), pallet (7), garden ring (8), bell jar (9), MAG block, ferrosilicon rare earth alloy fragment (10), ladle (11), molten iron (12), left side pillar (two) (13), clad (14), crossbeam (15), push rod (16), filling material protruding core ring (17), valve (18), compress spiral (19), cylinder (20), valve (21), valve (22), piston (23), the cylinder of blocking up (24), valve (25), gas shutoff piston (26) connects vavuum pump steel pipe (27), aspirating hole (28), soft graphite (29), right pillar (two) (30), last garden ring (31), guide rail (32), panel (33), involutory watt of pillar (34) (35), reductor (36), overload-release clutch (37), motor (38).

Molten iron is through after the application of vacuum and spheroidising shown in Figure 1, and the requirement according to shown in the middle mould of Fig. 2 quantitatively pours in the metal pattern.Start the upward pressure machine and drive upperpush rod, see Fig. 3 toward pressing down.The upward pressure machine drives 100 to 400 depression bars, because of the depression bar end is that curve cuts lid, so energy and middle mould are in conjunction with the nodular cast iron balls that is cast into complete riser-free.Last metal pattern has vertical hole.Middle metal pattern has short upright opening near the upper surface, and all the other are arc-shaped cavities of episphere.Upright opening is arranged at the bottom of following metal pattern, is the arc-shaped cavity of lower semisphere near the upper surface.The seam of patrix and middle mould draws, and the seam of middle mould and counterdie is laterally, and dotted portion is ignored.It is fixing under the shelf of the T font of following metal pattern is illustrated in.The depression bar of downforce machine often stretches into down in the metal pattern, and the end of the depression bar of following metal pattern is that curve cuts lid, becomes second complete spherical cavity with following metal pattern in when cast.Behind the molten steel solidification that pours into, start the downforce machine and drive down-pressed pole, eject iron ball, just pressure injection becomes the nodular cast iron balls of riser-free.(Fig. 5 is the casting method that dead head is arranged, and the iron ball cleaning that casts out is inconvenient, and the waste molten iron.）

Claims (4)

1, automatic sealer pressure injection riser-free and have the cast gate nodular cast iron balls to replace steel ball, particularly the large-scale production nodular cast iron balls replaces steel ball to be applied to the equipment of smelter ore dressing plant and cement industry, this equipment has automatic sealed vacuum to add the forcing press up and down that magnesium adds low rare earth processor repacking, has three metal patterns of upper, middle and lower it is characterized in that:

A. three metal patterns of its upper, middle and lower, each metal pattern has 100 to 400 holes,

B. adorn 100 to 400 depression bars on the platen that connects with the upward pressure machine,

C. adorn 100 to 400 depression bars on the platen that connects with the downforce machine,

D. metal pattern contact position band seam,

E. upperpush rod and down-pressed pole end are that curve cuts lid,

F. the depression bar of downforce machine connection often stretches into down in the metal pattern.

2, equipment according to claim 1, there is bridge of T font on the metal pattern both sides under it is characterized in that.

3, equipment according to claim 1, metal pattern has short upright opening near the upper surface in it is characterized in that, and all the other are arc-shaped cavities of episphere.

4, equipment according to claim 1 is characterized in that upright opening is arranged at the bottom of metal pattern down, is the arc-shaped cavity of lower semisphere near the upper surface.

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