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Manufacturing method of sand shooting plate and fine sand core

A manufacturing method and technology of sand shooting boards, which are applied in the manufacture of small sand cores, sand shooting boards and small sand cores, can solve the problems of affecting flow rate, flat deformation of copper pipe bends, oil circuit blockage, etc., and achieve increased Reflection strength, good technical effect, and the effect of solving bad molding

Active Publication Date: 2021-09-17
XIAN AERO ENGINE CONTROLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it is difficult for the curved copper tube to accurately conform to the design cavity size of the casting, and it is difficult to solve the situation that the small oil passage section changes, and the smooth bend of the copper tube will be flattened and deformed, which cannot be effectively controlled; in addition, if the copper in the aluminum alloy casting Corrosion of the pipe is not clean, causing the blockage of the oil circuit and affecting the flow rate during the test. At the same time, the residue in the inner cavity of the oil circuit is also a safety hazard

Method used

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  • Manufacturing method of sand shooting plate and fine sand core
  • Manufacturing method of sand shooting plate and fine sand core
  • Manufacturing method of sand shooting plate and fine sand core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0040]First, install the sand core mold on the core shooter, install the special sand shooting plate on the core shooter; turn on the power, and use the heating rod to preheat the mold. The mold preheating temperature is controlled at 180°C; the mold is opened to check the mold cavity, and the mold is closed after confirming that there is no foreign matter remaining in the mold cavity and no bump damage; the sand core blowing pressure is adjusted to 0.6MPa, and the sand core hardening time is adjusted to 2.5min; Then align the sand shooting hole of the special sand shooting plate with the mouth of the mold and blow the sand core; after the sand core blowing is completed, wait for the crust of the sand core to harden; On the movable half-mold, the sand core is ejected by the movable half-mold ejection system; after the sand core is taken out of the mold, it is gently placed on the tabletop in the tray with asbestos cloth in order; after the temperature drops, the sand core is cl...

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Abstract

The invention belongs to the field of casting, and relates to a manufacturing method of a sand shooting board and a fine sand core. The sand shooting board includes a sand shooting board body, a settling groove is arranged on the sand shooting board body, and a sand shooting hole is arranged at the bottom of the sinking groove; A baffle is arranged in the center; the baffle is placed on the top of the sand shooting hole and a sand shooting flow channel is arranged between the settling tank; the sand shooting flow channel is connected with the sand shooting hole at the bottom of the sinking tank. The invention provides a manufacturing method of the fine sand core which is easy to shape and can effectively ensure the quality of the sand core.

Description

technical field [0001] The invention belongs to the field of casting, and relates to a method for manufacturing a sand shooting board and a fine sand core, in particular to a method for manufacturing a fine sand core with a diameter not less than 2 mm and not greater than 5 mm. Background technique [0002] Due to the need for weight reduction and energy saving of aero-engines, the shell design of fuel accessories is becoming more and more sophisticated, and most of them need to be directly cast with curved and slender oil passage holes with a diameter (D)<5mm of 2mm for hydraulic oil delivery and lubrication. Oil and cooling medium, etc., these liquid oil passages are small, interlaced, curved, and arranged in the inner cavity of the casting. [0003] When the shell is cast, the oil passage in the inner cavity of the casting is generally formed by a core, and for a complex inner cavity, a sand core is usually used. In the sand core making process, the core making proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C15/24B22C19/00B22C9/10
CPCB22C9/10B22C15/24B22C19/00
Inventor 冯超毛娜杨立新卢书勇王勇王江云
Owner XIAN AERO ENGINE CONTROLS
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