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Titanium alloy investment casting precision casting method for product with narrow cavity and complicated structure

A technology of investment precision casting and complex structure, which is applied in the direction of casting molding equipment, molds, cores, etc., to achieve the effects of good inertia, high strength, and avoiding fire.

Active Publication Date: 2019-12-20
BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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Problems solved by technology

[0004] The present invention proposes a titanium alloy investment precision casting method for narrow and small cavity complex structure products to solve the technical problem of how to improve the compactness of the coating and the overall strength of the mold shell for narrow and small cavity complex structure products

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  • Titanium alloy investment casting precision casting method for product with narrow cavity and complicated structure
  • Titanium alloy investment casting precision casting method for product with narrow cavity and complicated structure

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Embodiment Construction

[0022] In order to make the purpose, contents and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the examples.

[0023] This embodiment proposes a titanium alloy investment precision casting method for products with a narrow cavity and complex structure, which specifically includes the following steps:

[0024] S1, prepare surface layer calcium carbonate composite slurry

[0025] Add deionized water to the binder zirconium sol, mix well and then add calcium carbonate or a mixture of calcium carbonate and zirconia or a mixture of calcium carbonate and yttrium oxide. The calcium carbonate used is crushed and screened after electric melting or calcining The resulting densified particles of less than 400 mesh, zirconia and yttrium oxide are the particles of less than 320 mesh obtained after crushing and screening after electric melting or calcination; after zirc...

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Abstract

The invention belongs to the technical field of non-ferrous metal precision casting, and particularly relates to a titanium alloy investment casting precision casting method for a product with a narrow cavity and a complicated structure. The method comprises the following steps of preparing surface course calcium carbonate composite slurry, coating a wax mold surface course, preparing the slurryof a reinforcing layer, preparing a reinforcing layer shell, preparing a secondary reinforcing shell and roasting. The method can realize the effective control of the quality of a precision casting mold shell of the product with the narrow cavity and complicated structure, and the quality of a titanium alloy casting product is improved significantly; the casting slurry has good stability, low cost, good inertia and high strength; the prepared shell and wax mold have high bonding strength, high density and good quality, so the chance of running out of the narrow and small cavity of the castingcan be avoided; the mold shell and the titanium alloy are not easy to react and fall off, and the control of no inclusions in the casting can be realized.

Description

technical field [0001] The invention belongs to the technical field of precision casting of nonferrous metals, and in particular relates to a titanium alloy investment precision casting method for products with narrow and small cavities and complex structures. Background technique [0002] Titanium is a strategic resource in my country. With the development of the country's economy and the upgrading of the industrial structure, the application fields and demand for titanium alloy materials are still growing. The manufacture of advanced titanium alloy materials and their precision parts has become a must for the development of the country's basic industries. core manufacturing capabilities. The investment casting process can cast titanium alloy castings with complex shapes and smooth surfaces, especially the development of large-scale thin-walled complex overall investment casting process, which shows great advantages both technically and economically. With the upgrading of w...

Claims

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Application Information

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IPC IPC(8): B22C7/02B22C3/00B22C9/04
CPCB22C3/00B22C7/02B22C9/04
Inventor 岳春华李勇马林芝周耀忠
Owner BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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