A quenched core mold and quenching method for a cylindric steel thin-wall component

A thin-walled part, cylindrical technology, applied in the field of aero-engine parts processing, can solve the problems of scrap parts, deformation of thin-walled parts, etc., and achieve the effect of reducing excessive heat storage, low cost, and improving product qualification rate

Active Publication Date: 2018-03-02
CHINA HANGFA SOUTH IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a quenching mandrel and a quenching method for cylindrical iron and steel thin-walled parts to solve the technical problem that the thin-walled parts are deformed after quenching and the parts are scrapped

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  • A quenched core mold and quenching method for a cylindric steel thin-wall component
  • A quenched core mold and quenching method for a cylindric steel thin-wall component
  • A quenched core mold and quenching method for a cylindric steel thin-wall component

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Embodiment Construction

[0023] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but the present invention can be implemented in various ways defined and covered below.

[0024] figure 1 It is a schematic diagram of the longitudinal section structure of the quenching mandrel for cylindrical steel thin-walled parts in a preferred embodiment of the present invention; figure 2 It is a top view structure diagram of a quenching mandrel for cylindrical steel thin-walled parts in a preferred embodiment of the present invention; image 3 It is a top view structure schematic diagram of a cylindrical steel thin-walled part in a preferred embodiment of the present invention; Figure 4 It is a schematic diagram of the longitudinal section structure of the cylindrical steel thin-walled part of the preferred embodiment of the present invention.

[0025] Such as figure 1 As shown, the quenching mandrel for cylindrical steel thin-walled part...

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Abstract

A quenched core mold and quenching method for a cylindric steel thin-wall component are disclosed. The quenched core mold includes a mold body. The radial dimension of an external circular surface ofthe mold body is designed as an inner-pore radial dimension before drying of the component, thus ensuring that a heated inner hole expands and the component is put into the mold body successfully during component quenching heating, and ensuring that the component tightly clamps the mold body after quenching. The external circular surface of the mold body is provided with a plurality of axial through slots which are disposed axially, bidirectionally cut-through, and used for allowing quenching oil to flow through, preventing contraction crack of the component during quenching, and assisting component demolding. The plurality of the axial through slots are equally spaced along the periphery direction of the mold body to form a uniform saw-toothed external circular surface. Slot bottoms of the axial through slots corresponding to end surface wide edges of the component are provided with axially-through wide-edge cooling slots used for increasing the flux of the quenching oil to cool the end surface wide edges of the component. Inner hole and planarity deformation of the component is reduced during quenching to allow dimension deformation of the component to be controlled in a reasonable range.

Description

technical field [0001] The invention relates to the technical field of aero-engine parts processing, in particular to a quenching mandrel for cylindrical steel thin-walled parts. In addition, the present invention also relates to a quenching method of a cylindrical steel thin-walled part comprising the above-mentioned quenching mandrel for a cylindrical steel thin-walled part. Background technique [0002] A thin-walled part is a common part of an aero-engine, the material is structural steel, and the final heat treatment state is carburizing and quenching. The thickness of the part is about 4mm. After the inner hole is carburized and quenched, the dimension requires flatness ≤ 0.1mm and inner hole ellipticity ≤ 0.15mm. Due to the high requirements on the wall thickness of the parts, they are easily affected by external factors. In actual production, the ellipticity of the whole batch of parts after quenching is often out of tolerance, and the deformation of the inner hole ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C21D1/673C21D9/00
CPCC21D1/18C21D1/673C21D9/0068
Inventor 卢锐阙超寻丹王国奇文钰
Owner CHINA HANGFA SOUTH IND CO LTD
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