Double-station anti-gravity casting machine of large copper alloy propeller for ship

An anti-gravity casting and copper alloy technology is applied in the field of double-station anti-gravity casting machines for copper alloy propellers for large ships, which can solve the problems of low yield of large copper alloy propellers, single function of anti-gravity casting machines, and low mechanical properties. problems, to achieve the effects of improved mechanical properties, improved tensile strength, and improved process yield

Active Publication Date: 2018-11-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of low process yield and low mechanical properties of the large copper alloy propeller prepared by the existing gravity pouring method,

Method used

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  • Double-station anti-gravity casting machine of large copper alloy propeller for ship
  • Double-station anti-gravity casting machine of large copper alloy propeller for ship
  • Double-station anti-gravity casting machine of large copper alloy propeller for ship

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specific Embodiment approach 1

[0047] Specific implementation mode one: combine figure 1 Describe this embodiment, the casting machine main body 20 of the copper alloy propeller double-station anti-gravity casting machine for large ships in this embodiment is a box structure; the box top surface of the casting machine main body 20 is the working platform 5; the inside of the casting machine main body 20 There are copper water packaging unloading station 6, low pressure casting station 8 and differential pressure casting station 19, differential pressure casting station 19 is set on the left side of copper water packaging unloading station 6, low pressure casting station 8 is set on the copper water The right side of packaging and unloading station 6;

[0048] A differential pressure casting solution exchange hole is provided on the working platform 5 corresponding to the center of the differential pressure casting station 19; a low pressure casting solution exchange hole is provided on the working platform ...

specific Embodiment approach 2

[0056] Specific implementation mode two: combination Figure 4~6 This embodiment is described. The difference between this embodiment and the first embodiment is that the mouth of the upper working tank 2 is set downwards, and the flange end surface of the mouth of the upper working tank 2 is provided with an inverted ladder-type sealing groove 30, which is inverted. The trapezoidal sealing groove 30 communicates with the interior of the upper working tank 2 through several air ducts 32 arranged in the side wall of the upper working tank 2, and an inverted trapezoidal sealing rubber sealing ring 31 is arranged in the inverted trapezoidal sealing groove 30; A tooth-shaped outer edge is provided, and several wedge irons 33 are arranged on the upper surface of the tooth-shaped outer edge; the upper working tank locking ring 4 is annular, and a rectangular groove is opened on the annular inner peripheral surface of the upper working tank locking ring 4 , the two groove walls of th...

specific Embodiment approach 3

[0057] Specific implementation mode three: combination Figure 4~6 Describe this implementation mode, the difference between this implementation mode and specific implementation mode 1 or 2 is:

[0058] The connection method between the upper working tank 2 and the connecting flange 21 of the upper working tank is as follows: when the upper working tank 2 is connected with the connecting flange 21 of the upper working tank, the toothed outer edge of the upper working tank 2 and the connecting flange of the upper working tank The toothed end face of 21 is set correspondingly, and one of the toothed groove walls of the rectangular groove of the locking ring 4 of the upper working tank passes through the toothed outer edge of the tank mouth of the upper working tank 2 and the toothed end face of the connecting flange 21 of the upper working tank , and then start the locking oil cylinder 41, the locking oil cylinder 41 drives the upper working tank locking ring 4 to rotate through...

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Abstract

The invention relates to a double-station anti-gravity casting machine of a large copper alloy propeller for a ship. The double-station anti-gravity casting machine is used for solving the problems that large copper alloy propellers prepared through an existing gravity casting method are low in technological yield and mechanical property and anti-gravity casting machines are simplex in function. Acasting machine body of the casting machine is of a box structure. A working platform is located on the top surface of a box of the casting machine body. A molten copper ladle loading and unloading station, a low-pressure casting station and a counter-pressure casting station are arranged in the casting machine body, the counter-pressure casting station is arranged on the left side of the moltencopper ladle loading and unloading station, and the low-pressure casting station is arranged on the right side of the molten copper ladle loading and unloading station. The double-station anti-gravitycasting machine is beneficial for forming large thin-walled complex castings, has the double stations, and is stable in operation and accurate in control. The double-station anti-gravity casting machine is suitable for casting the large copper alloy propeller for the ship.

Description

technical field [0001] The invention relates to a copper alloy propeller double-station anti-gravity casting machine for large ships. Background technique [0002] At present, the low yield of large copper alloy propellers seriously restricts the development of shipbuilding industry and national defense. Generally, copper alloy propellers for large ships or military ships are formed by gravity casting by traditional sand casting. Since the pouring process is carried out under normal pressure, the mold is filled by the gravity of the copper alloy liquid, the filling speed cannot be accurately controlled, and the filling process is prone to splashing to form secondary oxidation slag inclusions, copper alloy liquid flow and feeding The ability is poor, and the casting is prone to shrinkage cavity and shrinkage porosity. Even if the technical measures of increasing the riser and chilled iron are adopted, the shrinkage cavity and shrinkage defects cannot be completely eliminate...

Claims

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Application Information

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IPC IPC(8): B22D18/04
CPCB22D18/04
Inventor 孙剑飞曹福洋宁志良黄永江彭德林宋和谦
Owner HARBIN INST OF TECH
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