Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Hot-spinning cogging method based on nonuniform heating of aluminum alloy

A uniform heating, aluminum alloy technology, used in metal processing equipment, forming tools, manufacturing tools, etc., can solve the problems of excessive busbar dimensional accuracy, high temperature in the deformation zone, metal accumulation, etc., and achieve high surface hardness and good surface quality. , the effect of good metal fluidity

Inactive Publication Date: 2016-07-06
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
View PDF9 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual spinning process, due to the deformation process of the aluminum alloy, the friction between the blank and the mandrel, and between the blank and the rotary wheel will generate a lot of heat, which will easily lead to excessive temperature in the deformation zone, resulting in metal deformation during the spinning process. Stacking, billet cracking, bus bar dimensional accuracy out-of-tolerance and other problems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hot-spinning cogging method based on nonuniform heating of aluminum alloy
  • Hot-spinning cogging method based on nonuniform heating of aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The present invention provides a method for hot-spinning blanking of an aluminum alloy by uneven heating. The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Specific steps are as follows:

[0023] (1) The size of core mold 2 is: The length is 2500mm, and the material is die steel; the size of the aluminum alloy billet 4 is

[0024] (2) if figure 1 As shown, the mandrel 2 and the unloading ring 3 are heated to 380°C to 450°C by the heating device 1;

[0025] (3) if figure 2 As shown, the aluminum alloy blank 4 is placed on the mandrel 1;

[0026] (4) heating the upper end of the aluminum alloy billet 4 to 300°C-340°C and the lower end to 230°C-270°C through the heating device 1, and the intermediate temperature transitions naturally;

[0027] (Explanation: The temperature described in this method is the temperature of the core mold and the blank surface actually measur...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of machining of metallic materials and particularly relates to a hot-spinning cogging method based on nonuniform heating of aluminum alloy. According to the method, a nonuniform heating way is adopted, so that the temperature of a mandrel and the temperature of a discharging ring are made higher than that of an aluminum alloy billet, and the temperature of the upper end of the aluminum alloy billet is higher than that of the lower end of the aluminum alloy billet. The metal fluidity in the aluminum alloy billet is good, and cracks caused by spinning tensile stress are avoided; the hardness and strength of the outer surface of the aluminum alloy billet are relatively high, the aluminum alloy billet is unlikely to adhere to a spinning roller, the surface quality of the hot-spun billet is good, and the generatrix of the billet is straight; and by the adoption of the method, the temperature of a hot-spinning deformation area can be well controlled, the surface quality of the billet which is hot-spun through the heating method is good, the rate of finished products is high, and the dimensional precision is high.

Description

technical field [0001] The invention belongs to the field of metal material processing, and in particular relates to a hot spinning blanking method of unevenly heated aluminum alloy. Background technique [0002] Spinning is developed in modern times. It is an advanced metal plastic forming process without cutting processing that combines casting, extrusion, stretching, bending, ring rolling, cross rolling and rolling extrusion. Under the high pressure, the metal is processed into the required hollow rotating body point by point. In actual production, often due to the limited power of spinning equipment, when spinning large and thick blanks, the use of hot spinning method can reduce material deformation resistance, reduce spinning pressure, and use existing equipment more effectively. [0003] Precise control of the actual temperature in the deformation zone of the aluminum alloy billet is one of the key technologies for aluminum alloy hot spinning billet opening. In the a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/16B21D37/16
Inventor 柴国强李德富
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products