Unlock instant, AI-driven research and patent intelligence for your innovation.

Manufacturing method for wheel hub

A manufacturing method and hub technology, applied in the field of machinery, can solve problems such as poor impact resistance, and achieve the effects of high machining accuracy, high arc integrity, and good surface quality

Inactive Publication Date: 2014-02-05
王天波
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The wheel hub is an essential part of the car, and its performance is directly related to the smooth running and safety performance of the vehicle. However, some wheel hubs currently have the problem of weak impact resistance.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A manufacturing method of a wheel hub is completed according to the following steps:

[0015] 12 kg of powder mixture, which contains 2 kg of 1 μm cobalt powder and 2 kg of 2 μm tungsten carbide powder, the balance is steel powder of 2 μm, using a die with a rotation speed of 8 rpm as the lower die.

[0016] The powder mixture placed in the die is pressed into a billet by using a punch, and then sintered. Vacuum degree is controlled at 5Pa, 10 hours, 900 ℃.

[0017] It is then turned into a metal disc with an inner diameter of 300 mm and an outer diameter of 500 mm.

[0018] 8 kg of powder mixture, which contains 1 kg of 2 μm nickel powder and 1.5 kg of 3 μm cerium powder, with the balance of 4 μm iron powder, was vacuum sintered into multiple spokes. Vacuum degree is controlled at 5 Pa, 6 hours, 700 ℃.

[0019] Several spokes are welded on a disc by friction welding.

Embodiment 2

[0021] A manufacturing method of a wheel hub is completed according to the following steps:

[0022] 12 kg of powder mixture, which contains 2 kg of 2 μm cobalt powder and 2 kg of 3 μm tungsten carbide powder, the balance is steel powder of 4 μm, using a die with a rotation speed of 8 rpm as the lower die.

[0023] The powder mixture placed in the die is pressed into a billet by using a punch, and then sintered. Vacuum degree is controlled at 50Pa, 10 hours, 900 ℃.

[0024] It is then turned into a metal disc with an inner diameter of 300 mm and an outer diameter of 500 mm.

[0025] 8 kg of powder mixture, which contains 1 kg of 3 μm nickel powder and 1.5 kg of 8 μm cerium powder, with the balance of 5 μm iron powder, was vacuum sintered into multiple spokes. Vacuum degree is controlled at 46Pa, 6 hours, 700 ℃.

[0026] Several spokes are welded on a disc by friction welding.

Embodiment 3

[0028] A manufacturing method of a wheel hub is completed according to the following steps:

[0029] 12 kg of powder mixture, which contains 2 kg of 3 μm cobalt powder and 2 kg of 4 μm tungsten carbide powder, the balance is 5 μm steel powder, using a die with a rotation speed of 8 rpm as the lower die.

[0030] The powder mixture placed in the die is pressed into a billet by using a punch, and then sintered. Vacuum degree is controlled at 100Pa, 10 hours, 900 ℃.

[0031] It is then turned into a metal disc with an inner diameter of 300 mm and an outer diameter of 500 mm.

[0032] 8 kg of powder mixture, which contains 1 kg of 5 μm nickel powder and 1.5 kg of 9 μm cerium powder, with the balance of 8 μm iron powder, was vacuum sintered into multiple spokes. Vacuum degree is controlled at 67Pa, 6 hours, 700 ℃.

[0033] Several spokes are welded on a disc by friction welding.

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

A manufacturing method for a wheel hub includes that the wheel hub is made of 12kg of powder mixture containing cobalt powder, tungsten carbide powder and of the balance steel powder in the particle size of 2-5micrometers, and a female die 8 revolutions per minute in rotation speed is taken as a lower die; a punch press is utilized to press the powder mixture placed in the female die into a blank which is then sintered; then the blank is lathed into a metal disc 300mm in the inner diameter and 500mm in the outer diameter; 8kg of the powder mixture containing nickel powder, cerium powder and iron powder in the particle size of 4-8micrometers taken as the balance is sintered into a plurality of spokes; the spokes are welded to the disc by friction welding. The manufacturing method is high in processing precision, the outer ring surface of a bearing is good in quality, and the cambered surface is high in integration, so that the wheel hub can be assembled conveniently and assembly precision can be guaranteed.

Description

technical field [0001] The invention belongs to the field of machinery, and in particular relates to a manufacturing method of a wheel hub. Background technique [0002] The wheel hub is an essential part of the car, and its performance is directly related to the smooth running and safety performance of the vehicle. However, the hubs of some wheels currently have the problem of weak impact resistance. Contents of the invention [0003] The object of the present invention is to provide a method for manufacturing a wheel hub. The wheel hub produced by the method has good quality, high processing precision, is not easily deformed and has strong impact resistance. [0004] The technical solutions adopted are: [0005] A manufacturing method of a wheel hub is completed according to the following steps: [0006] 12 kg of powder mixture, which contains 2 kg of 1 ~ 3μm cobalt powder and 2 kg of 2 ~ 4μm tungsten carbide powder, the balance is steel powder 2 ~ 5μm, using a concave...

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): B22F5/00B22F3/16B22F1/00
Inventor 王天波
Owner 王天波