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Annular rolling speed control method of huge aluminum alloy annular forging

A speed control, aluminum alloy technology, applied in metal rolling, roll speed control, metal rolling, etc., can solve the problems of poor fluidity, narrow deformation temperature range, weak ring blank rigidity, etc., to ensure the success rate and reduce scrap The effect of stable growth rate and direct growth rate

Inactive Publication Date: 2016-11-16
WUXI PAIKE HEAVY CASTING & FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The giant aluminum alloy ring forging has a diameter of 9m and a wall thickness of 120-200mm. The giant overall ring blank has weak rigidity, narrow deformation temperature range, large friction coefficient and poor fluidity, which may easily cause rolling instability, ellipse, and warping of the ring. , folding and other issues
At present, for the ring rolling speed control of rectangular aluminum alloy ring forgings, the operator adjusts the speed according to experience, but the above-mentioned self-adjusting speed cannot predict the problems that may occur and need to be avoided during the ring rolling process, and the reasons for the problems cannot be analyzed. It is easy for operators without operating experience to fail, causing the problem of product scrapping

Method used

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Experimental program
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Embodiment Construction

[0019] Specific embodiments of the present invention will be described below.

[0020] A method for controlling the ring rolling speed of a giant aluminum alloy ring forging comprises the following steps:

[0021] The first step: put the ring blank with an inner hole diameter of 3000mm into the heating furnace, heat it to 430°C and keep it warm for 30H;

[0022] The second step: quickly transfer the ring blank heated in the first step to the 10m ring rolling machine for ring rolling within 5 minutes; Lubricating oil needs to be applied, and lubricating oil also needs to be applied on the main roll, core roll, holding roll and cone roll during the ring rolling process.

[0023] Step 3: After the ring blank contacts the main roller of the ring rolling machine, it enters the biting stage: in this stage, the linear speed of the main roller is controlled to be 1100mm / s, the radial feed speed of the core roller is 1mm / s, and the rotational speed of the cone roller is 8.2rad / s;

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Abstract

The invention relates to an annular rolling speed control method of a huge aluminum alloy annular forging. Three phases in a traditional annular rolling method are changed to four phases, and the rolling is performed by two times, so that the annular rolling speed in each phase is guaranteed, the direct growing speed of an annular blank is stable, and the purpose of once molding is achieved; and the numerical value simulation and the theoretic analysis are combined in each phase, so that the product scrape rate is largely reduced, and the success rate is guaranteed.

Description

technical field [0001] The invention relates to the field, in particular to a method for controlling the ring rolling speed of a giant aluminum alloy ring forging. Background technique [0002] With the rapid development of aerospace industry, modern defense industry and transportation industry at home and abroad, giant aluminum alloy ring forgings for aerospace have attracted the attention of domestic and foreign aerospace fields. At present, the international giant aluminum alloy ring forgings adopt the method of tailor welding to realize the overall forming. However, welding will destroy the strength of the parent material and easily produce welding defects. Therefore, a new forming process for giant aluminum alloy ring forgings is urgently needed to meet the development needs of the aerospace industry. . [0003] At present, the use of integral forged aluminum alloy rings instead of welded parts to improve product performance and reliability is the development trend of ...

Claims

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Application Information

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IPC IPC(8): B21B37/46B21H1/06
CPCB21B37/46B21B2275/04B21H1/06
Inventor 刘其源刘智许亮李姚君丁佐军郑卓郜均虎
Owner WUXI PAIKE HEAVY CASTING & FORGING
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