A heat treatment deformation control method for an aluminum alloy hemispherical shell of an ellipsoidal surface storage tank

A technology of heat treatment deformation and control method, applied in the direction of heat treatment process control, heat treatment furnace, heat treatment equipment, etc., can solve the problems such as pits in the circumferential direction of the shell, affecting the machining process, and reducing the strength of components, etc., to achieve strong operability and Practicality, the effect of reducing quenching transfer time and reducing aging deformation
CN107513677BActive Publication Date: 2019-02-15AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
Publication Date
2019-02-15

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Abstract

The invention relates to a heat treatment deformation control method for a large-diameter and large-modulus elliptical molded surface container semispherical shell and belongs to the technical field of container manufacturing. By means of the heat treatment deformation method, due to the fact that an integrated quenching and aging heat treatment tool is designed, the elliptical molded surface container semispherical shell and the heat treatment tool can be tightly matched, the quenching transfer time is shortened, the phenomenon that the top of the shell collapses and pits happen in the circumferential direction of the shell during quenching is avoided, quenching and time aging deformation is reduced, and therefore the heat treatment performance of the elliptical molded surface container semispherical shell can be ensured; and meanwhile, the subsequent machining precision of the shell is also ensured. In addition, a UCON water solution with the concentration ranging from 6% to 10% is adopted in the method to serve as a quenching medium, dynamic flowing of the water solution is maintained, the cooling speed and uniformity of the shell are ensured, meanwhile, quenching deformation is also controlled, and therefore the product precision is ensured.
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Description

technical field

[0001] The invention relates to a heat treatment deformation control method for a hemispherical shell of a storage tank with a large diameter and a large modulus ellipsoidal surface, which belongs to the technical field of storage tank manufacturing. The modulus means that the ratio of the major axis to the minor axis of the hemispherical shell is not less than 2. Background technique

[0002] Foreign countries usually design professional heat treatment equipment to heat treat the hemispherical shell of large storage tanks. For example, the integral spinning bottom of the American AresI rocket fuel storage tank (Φ5500mm) uses special heat treatment equipment for spraying + water quenching; domestic super large rocket fuel storage tanks The bottom of the box (Φ2250mm, Φ3350mm, Φ5000mm) is formed by tailor welding of melon petals. The wall thickness of the melon petal blank is relatively large, and the machining allowance of the bottom of the box after tailor w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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