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Process for manufacturing large-scale long shaft by segments

A segmented manufacturing and process technology is applied in the field of manufacturing processes to achieve the effects of saving natural gas energy, saving forging costs, and improving welding depth

Active Publication Date: 2011-07-27
DEYANG ZHONGHENG HEAVY IND MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, due to the limitations of its auxiliary equipment, etc., there is no report on the application of this electronic induction heater to the dehydrogenation process of large-scale long-axis forging.

Method used

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  • Process for manufacturing large-scale long shaft by segments
  • Process for manufacturing large-scale long shaft by segments
  • Process for manufacturing large-scale long shaft by segments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 and figure 2 As shown, a large-scale long shaft manufacturing process, the whole process includes the following steps:

[0034] A. Segmented forging: the entire main shaft 1 is divided into three sections of the shaft body 2 for shaft blank forging. The length of the entire main shaft 1 is 8000mm, and the lengths of the divided three-section shaft body 2 are 2000mm, 4000mm and 2000mm respectively, and the wall thickness is 400mm;

[0035] B. Processing of welding grooves: Roughly process each section of the blank to meet the requirements of flaw detection. The inclination angle of 3 is 2 degrees;

[0036] C. Assembly welding: use narrow gap welding equipment to weld each section of the shaft body 2; the weld seam is less than 25mm, and the welding depth is 500mm during welding. The nozzle of the welding torch, the conductive plate, the conductor and the The flux funnel conveying system is correspondingly extended by 160mm, and copper-nickel alloy is...

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Abstract

The invention discloses a turnout fine tuning method including the following steps: vertically placing a vertical adjustment frame, and capable of bearing; placing right a concrete base transverse adjustment member, and connecting with a turnout sleeper truss reinforcement; removing an assembling platform; mounting a prism on a dense pile, placing an orbital geometry state measuring apparatus on the turnout; fine tuning the turnout by using the orbital geometry state measuring apparatus and matching the vertical adjustment frame and the transverse adjustment member; lashing the truss reinforcement and mounting a template, and fine tuning for twice, enabling a deviation of a direct strand midline of the turnout and a line design midline not more than 2mm, the deviation of an elevation and a design elevation not more than 2mm. The invention has beneficial effects of better ensuring that the turnout has good integral ride comfort, better holding the geometry form and position state of the turnout, and improving the work efficiency and precision of unballasted turnout construction.

Description

technical field [0001] The invention relates to a manufacturing process, in particular to a shaft component manufacturing process. Background technique [0002] At present, the demand for energy is increasing at home and abroad, especially clean and environmentally friendly energy, such as hydropower, wind power, etc., and the generator sets are getting larger and larger, and the corresponding components are also increasing. For example, the weight of a single piece of rotor and spindle is about 100 tons. There are many parts, and such an integral shaft needs to be forged as a whole at one time. General equipment does not have such forging capabilities. See figure 1 In order to produce such large-scale shaft forgings over 100 tons, under the current market conditions, only a few large enterprises such as China First Heavy Industry, China Erzhong, and Shanghe Heavy Industry have such forging capabilities. The equipment is expensive and scarce, resulting in a small supply in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B21K1/06B23K9/235B23K9/28B23K9/028C21D1/30C21D1/42
CPCY02P10/25
Inventor 马林
Owner DEYANG ZHONGHENG HEAVY IND MACHINERY
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