Processing technology method of precise large-size rigid pipe assembly

A processing technology and large-size technology, applied in the field of precision large-size rigid tube component processing technology, can solve the problems of unqualified shape and position accuracy of components, poor manufacturability, large size, etc., so as to solve processing problems and make the process route reasonable , The effect of reducing processing costs
CN105583573AActive Publication Date: 2016-05-18SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
Publication Date
2016-05-18

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Abstract

Provided is a processing technology method of a precise large-size rigid pipe assembly. The processing technology method comprises following steps: pipe material examination; part preparations; attachment cleaning; polishing of positions to be welded; flaring and necking; assembly and positioned welding; electron beam welding; overlap grinding; X-ray examination; repair welding; stress-relief heat treatment; marking; turning references at two ends; polishing and edge sharpening; turning a big-end inner cavity; polishing and edge shaping; bore grinding; four bore drilling; polishing and edge shaping; cleaning; magnetic crack detection; cleaning; final examination and oil seal. The processing technology method of the precise large-size rigid pipe assembly has following advantages: the processing technology method is reasonable in process route and suitable for precision processing of carburizing bores; processing difficulty of the precise large-size rigid pipe assembly is solved; the processing requirement is satisfied; and processing cost is decreased.
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Description

technical field

[0001] The invention relates to the field of mechanical processing, in particular to a processing method for precision large-size rigid pipe components. Background technique

[0002] The precision large-size rigid pipe assembly has a special structure. It is welded by a rough pipe with a wall thickness of 1mm and two machined parts. The total length of the assembly is 463mm, and the diameter of the pipe is φ57mm. Components require high dimensional accuracy, shape and position accuracy. For example, the coaxiality of the inner hole and outer circle of the small end relative to the outer circle of the big end is not greater than φ0.08mm, and the runout of the inner hole of the big end relative to the outer circle of the big end is not greater than 0.02 mm, the surface roughness Ra of the small end carburized inner hole is not greater than 0.1 μm. Since the pipe assembly adopts a welded structure, the size is large, the wall is thin, and the inner hole at one ...

Claims

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