Highly turbocharged low pressure die casting machine

A low-pressure casting machine and high-pressure casting technology are applied in the field of low-pressure casting machines, and the low-pressure casting machines are transformed into high-pressure casting machines to achieve the effects of good structure compactness, satisfactory strength and elongation

Inactive Publication Date: 2011-10-12
JIANGSU TIANHONG MACHINERY IND
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, some castings have high internal quality requirements, and they hope to crystallize under higher pressure. The greater the crystallization pressure, the better the feeding effect, and the denser the final casting structure, and the strength and elongation of the casting can be greatly improved. However, it is

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  • Highly turbocharged low pressure die casting machine
  • Highly turbocharged low pressure die casting machine
  • Highly turbocharged low pressure die casting machine

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Embodiment Construction

[0011] Depend on figure 1 Known, it is the schematic diagram of the holding furnace structure of the prior art. It is composed of casting layer, insulation layer 2, shell 3, heating rod 4 and air inlet 5. The pouring layer 1 cannot be in direct sealing contact with the furnace shell 3, and is isolated by the insulation layer 2 in the middle. When filling the mold, high-pressure gas will enter the insulation layer 2 through the gap around the heating rod 3. Due to the high gas pressure, when the furnace leaks When pressing, the high-pressure gas in the insulation layer is particularly easy to crack the pouring layer. When filling the holding furnace, the air intake method is a single air inlet at the back of the furnace, the air intake and exhaust speed is slow, and the air intake and exhaust volume is small, which cannot meet the speed and flow requirements of high pressure casting.

[0012] Depend on figure 2 It is a structural representation of the present invention. In...

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Abstract

The invention relates to a highly turbocharged low pressure die casting machine, comprising a pouring layer (1), a thermal insulation layer (2), a case (3), a heating rod (4) and air inlet/exhaust holes (5), wherein the upper part of the hearth is provided with the heating rod (4), the lower part is provided with the pouring layer (1) and the thermal insulation layer (2). The highly turbocharged low pressure die casting machine is characterized in that the two sides of the upper part of the hearth are provided with the air inlet/exhaust holes (5). In the structure in the invention, the pouring layer is directly contacted and sealed with the case of a furnace in a filling way, thus high pressure gas can not enter into the thermal insulation layer and the pouring layer is protected. The air inlet/exhaust holes are arranged in heating tanks at the two sides, air is introduced/exhausted at the two sides simultaneously, the speed for introducing/exhausting the air can meet the requirement of mould filling during high pressure casting, structure compactness of a casting is good, and the strength and elongation percentage can meet product requirements.

Description

technical field [0001] The invention belongs to the technical field of metal casting equipment, relates to a low-pressure casting machine, and in particular relates to transforming a low-pressure casting machine into a high-pressure casting machine. Background technique [0002] With the rapid development of my country's automobile industry, in order to meet the lightweight of auto parts, a large number of alloy wheels, engine block, cylinder head, gearbox body or other parts are produced by low-pressure casting technology. In other fields, such as aviation, textile machinery, etc., low-pressure castings are gradually being used to improve product quality, reduce cutting processing, and reduce equipment weight. Low-pressure casting is a casting method in which liquid metal completes the process of filling the cavity and solidifying under pressure to obtain castings. Because the pressure used is low (20-60kPa), it is called low-pressure casting. However, some castings have ...

Claims

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Application Information

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IPC IPC(8): B22D18/04
Inventor 张培军潘益琴叶松军张达鑫张秋白郦君俊
Owner JIANGSU TIANHONG MACHINERY IND
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