Method for rolling and forming rectangular section aluminium alloy ring piece

A rectangular section, aluminum alloy technology, applied in metal rolling, metal rolling and other directions, can solve the problems of low geometric accuracy of rings, low material utilization rate, large machining allowance, etc., to shorten production time and improve metal structure. and performance, the effect of reducing the number of heating

Inactive Publication Date: 2005-03-02
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 process of rolling to form aluminum alloy ring with rectangular cross section includes the following steps: sawing aluminum alloy rod into section; making ring blank via homogeneous heating from room temperature to the heat deforming temperature of 350-550 deg.c, upsetting, punching hole and punching coating; rolling the blank heated in a heating furnace to 350-550 deg.c via radial or radial-axial rolling inside groove; and cutting mechanically into the product. The present invention has the features 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 Applications(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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