Method for rolling and forming rectangular section aluminium alloy ring piece

A rectangular section, aluminum alloy technology, applied in the direction of metal rolling, metal rolling, etc., can solve the problems of low geometric precision of ring parts, low material utilization rate, low production efficiency, etc., to shorten production time, improve metal structure and Performance and productivity improvement effects

Inactive Publication Date: 2006-04-26
WUHAN UNIV OF TECH
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Problems solved by technology

The main problems in the production of aluminum alloy rings by this process are: 1) the geometric accuracy of the ring is low, the machining allowance is large, and the material utilization rate is low; 2) the ring needs to be reamed many times, the production efficiency is low, and the labor intensity is high ; 3) The ring needs to be heated repeatedly and consumes a lot of energy; 4) The production cost is high

Method used

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  • Method for rolling and forming rectangular section aluminium alloy ring piece
  • Method for rolling and forming rectangular section aluminium alloy ring piece
  • Method for rolling and forming rectangular section aluminium alloy ring piece

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Embodiment Construction

[0017] The method for rolling and forming a rectangular cross-section aluminum alloy ring is realized according to the following steps: 1) blanking: sawing the aluminum alloy bar into material sections, the length of the material section is L=(1~3)B, and B is the length of the blank Axial dimension.

[0018] 2) Billet making: uniformly heat the material section from room temperature to a heat distortion temperature of 350°C to 550°C with high plasticity and low resistance, and upsetting, punching, and punching the hot aluminum alloy material section to make it into a specified shape Dimensions of ring blanks for rolling.

[0019] In order to reduce the burrs on the edge of the hole of the ring, a bevel angle α is designed on the edge of the inner hole of the blank, and its value is α=0°~15°. The hole diameter of the rectangular cross-section aluminum alloy ring forging is d f , the axial dimension is B f , The rolling ratio is λ, λ=2~8, then the hole diameter of the blank f...

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Abstract

The invention relates to a method for rolling and forming a rectangular cross-section aluminum alloy ring. The method for rolling and forming a rectangular cross-section aluminum alloy ring is characterized in that it is realized in the following steps: 1) blanking: sawing the aluminum alloy bar into material sections; 2) billet making: uniformly heating the material section from room temperature to high temperature The plasticity and low resistance heat deformation temperature is 350℃~550℃, and the hot aluminum alloy material section is upset, punched, punched and connected to make a ring blank for rolling with specified shape and size; 2) Ring rolling: Put the ring blank into the heating furnace for heating, take it out when the temperature reaches 350℃~550℃, put it into the pass of the ring rolling machine, and make the wall thickness of the ring blank by radial rolling or radial-axial rolling 4) The forgings are machined and processed into products. The invention has the characteristics of low cost and high production efficiency.

Description

technical field [0001] The invention relates to a method for rolling and forming a rectangular cross-section aluminum alloy ring. Background technique [0002] At present, most of the aluminum alloy rings with rectangular cross-section are completed by horse-frame reaming, that is, the blank is placed on the mandrel, and the blank is hammered on the upper anvil to produce elongation along the circumferential direction, so that the wall thickness of the forging is thinned, and the inner and outer diameters Increase at the same time, so as to meet the shape and size requirements. The processing technology is: 1) Upsetting, 2) Punching, 3) Punch reaming, 4) Mandrel horse frame reaming, 5) Trimming. The main problems in the production of aluminum alloy rings by this process are: 1) the geometric accuracy of the ring is low, the machining allowance is large, and the material utilization rate is low; 2) the ring needs to be reamed many times, the production efficiency is low, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B5/00B21H1/06
Inventor 华林赵玉民毛华杰吴燕翔
Owner WUHAN UNIV OF TECH
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