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Casting method of motor casing

A technology of motor housing and master mold, applied in casting molding equipment, casting mold, casting mold composition, etc., can solve the problems of unreasonable runner structure design and unsatisfactory casting effect, etc., to improve casting quality and improve Casting quality, the effect of reducing loose shrinkage

Inactive Publication Date: 2012-09-19
浙江坤博精工科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the unreasonable design of the runner structure, the casting effect is not very ideal.

Method used

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  • Casting method of motor casing
  • Casting method of motor casing
  • Casting method of motor casing

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0021] Example.

[0022] Such as Figure 1 to Figure 6 As shown, the casting method of the motor housing in this embodiment uses a runner structure and a master mold 5 for casting. The runner structure includes a sprue 1, a runner 2, a ring runner 3 and 9-11 internal Runner 4.

[0023] The runner 2 is located in the annular region of the runner 3 , both ends of the runner 2 are connected to the runner 3 , and the runner 2 is located at the diameter of the runner 3 .

[0024] The lower end of the sprue 1 is connected to the middle of the runner 2, the sprue 1 and the runner 2 are perpendicular to each other, and the axis of the sprue 1 and the axis of the female mold 5 are on the same straight line.

[0025] The i...

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Abstract

The invention relates to a casting method of a motor casing. A pouring gate structure and a female die are used for pouring. The pouring gate structure comprises a straight pouring gate, a transverse pouring gate, an annular pouring gate and at least one inner pouring gate, the annular pouring gate is connected with the bottom of the female die through the inner pouring gate, two ends of the transverse pouring gate are both connected with the annular pouring gate, the lower end of the straight pouring gate is connected with the transverse pouring gate, the straight pouring gate is perpendicular to the transverse pouring gate, the straight pouring gate is connected on the middle portion of the transverse pouring gate, and the axis of the straight pouring gate and the axis of the female die are on the same line. Compared with the prior art, the casting method of the motor casing has the advantages of enabling iron water to be evenly distributed in the female die, being small in temperature difference after the female die is filled, avoiding large theoretical heat saving offset, being favorable for reducing defects like loosing and shrinkage, and accordingly improving casting quality.

Description

technical field [0001] The invention relates to a casting method, in particular to a casting method of a motor casing, the casting method of the motor casing casts a vertical bearing casing with a large diameter > 2200mm of a nuclear power plant. Background technique [0002] The diameter of the vertical bearing shell is relatively large, generally >2200mm. It is used in vertical bearings in nuclear power facilities. The quality requirements for the shell are relatively high, such as dense materials, high strength, good heat dissipation performance, and not easy to leak water and oil. . After the casting of the vertical bearing shell, the shell body is not allowed to have defects such as cracks, cold shuts, shrinkage cavities, and slag inclusions. In the casting process of the vertical bearing shell, the solidification modulus Mc is 1.9-2.0cm. According to the conventional casting process, the control pressure riser design method is adopted. This design method is suit...

Claims

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Application Information

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IPC IPC(8): B22C9/24B22C9/08C22C37/10C22C37/04
Inventor 金克纪赵二华朱乾锋沈国飞
Owner 浙江坤博精工科技股份有限公司
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