Casting method for thin-wall annular cast

A ring-shaped casting, thin-walled technology, applied in the direction of casting molding equipment, molds, mold components, etc., to achieve the effects of reducing stress, stable shape, and preventing deformation

Active Publication Date: 2012-07-25
KOCEL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a thin-walled annular casting with a unique process method, which can solve the casting cracks and deformation problems of thin-walled annular castings, reduce the ratio of sand to iron, save costs, and shorten the production cycle. casting method

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  • Casting method for thin-wall annular cast
  • Casting method for thin-wall annular cast

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Embodiment Construction

[0029] A casting method for thin-walled annular castings is characterized in that it comprises the steps of:

[0030] a. Computer simulation: Use modulus calculation and computer casting solidification simulation to determine the position and size of the riser subsidy, and use computer casting mold filling simulation to determine the laying method of the gating system;

[0031] b. Determination of the molding plan: determine the thickness of the sand core through computer simulation, determine the thickness of the sand core and the slotting position of the inner cavity, the width of the slot is 5-10mm, the length is 200-400mm, and the depth can run through the entire sand core. The number is 2-6 ;

[0032] c. Mold making: The mold is made with a five-axis CNC machining center, made of solid wood, the protruding belt part is made of live material, and the dovetail groove and pin are used for positioning, and the rest of the mold is made as a whole;

[0033] d. Make the core bo...

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Abstract

The invention relates to a casting method, in particular relates to a casting method for a thin-wall annular cast. The casting method is characterized by comprising the following steps: simulating by a computer; determining a cast scheme; manufacturing a die; manufacturing a core box and a core skeleton; manufacturing a core; putting the core; modeling; opening the box; closing the box; pressing the box; pouring; cutting a dead head; carrying out thermal treatment; detecting a molded line; and carrying out relief grinding and shot blasting. The technical method disclosed by the invention is peculiar, the problem of the casting crack and deformation of the thin-wall annular cast can be solved, the sand metal ratio is lowered, the cost is saved, and the production period is shortened.

Description

technical field [0001] The invention relates to a casting method, in particular to a casting method of a thin-walled annular casting. Background technique [0002] Large-size ring-type steel castings have a diameter of more than 3000mm and a wall thickness of 50-150mm. Their structural characteristics are large diameter, thin wall, complex structure, and cracks are prone to occur after casting. For such castings, the commonly used domestic molding scheme is solid sand core molding. Its existing casting scheme mainly has the disadvantages of the following aspects: 1) The structure of the ring casting is closed, and it will generate large stress during solidification, which is not easy to release. When it is hindered by the sand core, it is very easy to deform or crack, and even cause Castings are scrapped, which brings economic losses to the foundry; 2) This type of casting is molded with a solid sand core, and its sand-iron ratio is as high as 6. The production efficiency i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/22B22C9/02B22C9/10
Inventor 张立文彭凡付龙扈广麒罗永建
Owner KOCEL EQUIP
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