Method for manufacturing special vehicle wheels with 7000 series aluminum alloy

Patent metadata

Field	Value
Publication number	US-11981985-B2
Application number	US-202217576201-A
Country	US
Kind code	B2
Filing date	Jan 14, 2022
Priority date	Mar 29, 2021
Publication date	May 14, 2024
Grant date	May 14, 2024

Abstract

The disclosure discloses a method for manufacturing special purpose vehicle wheels by using 7000 series aluminum alloys, comprising the following steps: step 1, smelting 7000 series aluminum alloys in a smelting furnace; step 2, making the solution obtained in step 1 into an aluminum alloy ingot blank through a spraying and forming process; step 3, extruding the aluminum alloy ingot blank of step 2 to obtain an extrusion bar; step 4, sawing the extrusion bar into blanks and heating them; step 5, rolling the blank into a cake; step 6, putting the cake into a press for forging and forming; step 7, spinning and forming the wheel rim. The wheel manufactured by the method for manufacturing special vehicle wheels with 7000 series aluminum alloys in the present disclosure has high and stable conductivity, qualified impact test and good bending and radial fatigue performance.

First claim

What is claimed is:

1. A method for manufacturing special purpose vehicle wheels using 7000 series aluminum alloys, wherein the method comprises the following steps:
Step 1, smelting 7000 series aluminum alloys in a smelting furnace to obtain a solution;
Step 2, making the solution obtained in step 1 into an aluminum alloy ingot blank through a spray forming process;
Step 3, extruding the aluminum alloy ingot blank of step 2 to obtain an extrusion bar;
Step 4, sawing the extrusion bar into blanks and heating them;
Step 5, putting the blank into a rotary forging press and rotary forging the blank into a cake;
Step 6, putting the cake into a press for forging and forming;
Step 7, performing spinning and forming on a wheel rim initially formed in step 6; and
Step 8, performing solid solution, quenching process and ageing treatment sequentially on the wheel rim,
wherein during the quenching process, the wheel rim is swung up and down for more than 30 times,
wherein step 6 comprises an initial forging process and a final forging process, the initial forging process is carried out in an initial forging press, and the spokes, wheel rims and windows are initially formed, and
the final forging process is carried out in a final forging press, and the spokes and windows are completely formed,
wherein a trimming and reaming process is further included between step 6 and step 7.

2. The method for manufacturing special purpose vehicle wheels by using 7000 series aluminum alloys according to claim 1 , wherein
in the quenching process, the quenching water temperature is 60-63° C., the transfer time is less than 15s,
after quenching and before ageing treatment, the wheel rim stays in water for more than 30 min.

Assignees

• Citic Dicastal Co Ltd

Inventors

• Chen Tieqiang
• Xu Zuo
• Zhu Zhihua
• Zhang Qingzhu
• Huang Lixin
• Li Meng

Classifications

• C22F1/047 Primary

  of alloys with magnesium as the next major constituent · CPC title

• B21D53/264

  wheels out of a single piece (B21D53/261 takes precedence) · CPC title

• C22C21/08 Primary

  with silicon · CPC title

• B23P15/00 Primary

  Making specific metal objects by operations not covered by a single other subclass or a group in this subclass · CPC title

• B21J5/12 Primary

  Forming profiles on internal or external surfaces (making screw-thread by forging, pressing, or hammering B21K) · CPC title