Method for preparing wax mold of monocrystal spiral crystal selector

A spiral crystal selector and spiral crystal selection technology, applied in the field of investment precision casting, can solve the problems of spiral crystal selector mold complexity, high metal mold price, cumbersome preparation process, etc., achieve small capital investment, save time and Economic cost, simple operation effect

Active Publication Date: 2014-07-02
DONGFANG TURBINE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For crystal selector wax molds, the traditional method is usually to use rubber molds or metal molds to press them on a wax press machine, which requires large-scale equipment such as wax press machines...

Method used

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  • Method for preparing wax mold of monocrystal spiral crystal selector
  • Method for preparing wax mold of monocrystal spiral crystal selector
  • Method for preparing wax mold of monocrystal spiral crystal selector

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Embodiment Construction

[0027] Such as Figure 1~4 As shown, the wax pattern of the single crystal spiral crystal selector of the present invention includes the wax pattern 6 of the seeding segment, the wax pattern 5 of the spiral crystal selection segment and the wax pattern 4 of the transition segment connected in sequence from bottom to top. In this specific embodiment: it is necessary to use bonding wax heated to 130° C. to assemble the components 1 to 7 into a wax model tree. Firstly, sprue wax mold 2, wax mold sample 3, spiral selection section wax mold 5, seeding section wax mold 6 and transition section wax mold 4 are bonded in turn for later use; then the gate is fixed with an iron stand The cup wax model 1 and the bottom plate wax model 7 are two parts; finally press all parts figure 1 The structures shown are glued together to form the wax model tree for the spiral crystal selector.

[0028] The present invention mainly provides a method for rapidly preparing a single crystal spiral crys...

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Abstract

The invention provides a method for preparing a wax mold of a monocrystal spiral crystal selector. The wax mold of the monocrystal spiral crystal selector comprises a seeding section wax mold, a spiral crystal selecting section wax mold and a transition section wax mold which are sequentially connected from bottom to top. The method comprises the following steps: firstly, manufacturing the seeding section wax mold and the transition section wax mold; winding on a screw corresponding to the size of the required spiral crystal selecting section by a plastic welding rod, sizing for a moment, immersing into 58# refined paraffin liquid at 68 DEG C, taking out after 4-7 seconds so as to obtain the spiral crystal selecting wax mold; connecting two ends of the spiral crystal selecting wax mold with the bottom of the transition section wax mold and the top of the seeding section wax mold respectively by utilizing bonding wax which is heated to be 130 DEG C. According to the invention, the crystal selector wax mold which meets the requirement can be prepared rapidly; compared with the traditional method using a wax injector and a wax mold, the method has the characteristics of no need of wax injector equipment, no need of machining the wax mold, low expense, simplicity in operation, short consumption time, high efficiency, high yield and the like.

Description

technical field [0001] The invention relates to the field of investment precision casting, in particular to a method for quickly preparing a wax mold of a spiral crystal selector in the wax mold manufacturing stage in the investment precision casting process of single crystal castings. Background technique [0002] Due to their excellent high-temperature mechanical properties, high-temperature alloys have become the preferred materials for the design of advanced aero-engines and heavy-duty gas turbine blades, and these blade casting blanks are generally prepared by investment casting. For single crystal blade castings, the "crystal selection method" is mostly used in industrial production. In this process, the crystal selection process and crystal selection efficiency have a very important impact on the grain orientation and yield of the final single crystal blade, which is closely related to the geometric size of the crystal selector in the spatial direction. Therefore, th...

Claims

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Application Information

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IPC IPC(8): B22C7/02
Inventor 李林蓄赵代银张松泉杨功显
Owner DONGFANG TURBINE CO LTD
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