CN105564142A - A high-performance forged rare-earth magnesium alloy wheel hub and its manufacturing method - Google Patents

Abstract

The invention discloses a high-performance rotary forging rare earth magnesium alloy hub, which comprises a hub body which is forged by a rare earth magnesium alloy rod and integrally formed by turning, wherein one side of the hub body is open, the other side of the hub body is a connecting disc, a connecting shaft hole is formed in the center of the connecting disc, a plurality of uniformly arranged bolt holes are formed in the periphery of the connecting shaft hole, and a plurality of uniformly arranged heat dissipation holes are formed in the outer side of the bolt holes, so that the vibration of an automobile engine, a suspension bracket and a gearbox can be reduced, the service life of a vehicle is prolonged, and the stability, the safety and the comfort in the driving process of the; the weight of the hub is about 30% lighter than that of an aluminum alloy hub, so that the weight of a vehicle can be effectively reduced, the carbon dioxide emission of the vehicle can be effectively reduced, and the environmental pollution is reduced.

Description

A high-performance forged rare-earth magnesium alloy wheel hub and its manufacturing method

technical field

The invention relates to a wheel, in particular to an automobile wheel hub and a manufacturing method.

Background technique

There are two types of wheel hubs in the prior art: steel hubs and aluminum alloy hubs. Steel hubs have the advantages of simple manufacturing process, low cost, and strong resistance to metal fatigue, but they are heavy, poor in heat dissipation, and unattractive in appearance. Aluminum alloy wheels have the advantages of small weight, good heat dissipation performance, and beautiful appearance, but their anti-metal fatigue ability is insufficient.

Contents of the invention

In order to overcome the deficiencies of the prior art, the invention provides a rare earth magnesium alloy wheel hub and a manufacturing method thereof.

The technical solution adopted by the present invention to solve its technical problems is:

A high-performance forged rare-earth magnesium alloy wheel hub, including a hub body integrally formed by forging and turning of a rare-earth magnesium alloy rod, one side of the hub body is open, and the other side is a connecting plate, and the center of the connecting plate is provided with a A shaft connection hole, a plurality of evenly arranged bolt holes are arranged around the shaft connection hole, and a plurality of evenly arranged heat dissipation holes are arranged outside the bolt hole.

A valve hole is arranged at the connecting part of the hub and the connection plate.

The manufacturing method of the above-mentioned high-performance forged rare-earth magnesium alloy hub is as follows:

(1) The rare earth magnesium alloy is smelted and poured into a rare earth magnesium alloy rod with a compressive strength of 300-320 MPa.

(2) Process the rare earth magnesium alloy rod into a cylindrical rod. The diameter and length of the rod are as follows: 14 inches in diameter and 400 mm in length; 15 inches in diameter and 420 mm in length; 16 inches in diameter and 450 mm in length; 18 inches in diameter Length 480 mm; diameter 20 inches length 500 mm.

(3) The bar is heated to 380-420 degrees Celsius, and the bar is forged into a blank by a hydraulic press of more than 1,000 tons.

(4) Heat the blank to 380-420 degrees Celsius, and then put it into the spinning machine for spinning and forming.

(5) Put the spinning blank into a furnace at 200-220 degrees Celsius for 4 hours, then turn off the power and cool naturally.

(6). Machine tools are used to precisely process the inside and outside of the blank.

(7) Grinding the processed blank as a whole to improve the smoothness.

(8) Degreasing and cleaning the polished blank.

(9) Spray the cleaned blank to form a finished wheel hub.

The beneficial effects of the present invention are: the wheel hub of the present invention is integrally formed by forging and turning rare earth magnesium alloy rods, and the wheel hub is provided with a number of evenly arranged cooling holes, and the weight is about 30% lighter than that of the aluminum alloy wheel hub, which can effectively reduce the weight of the vehicle. According to calculations, every 100 kg reduction in vehicle weight can reduce fuel consumption by 0.7 liters per 100 kilometers; 10% reduction in vehicle weight can increase fuel efficiency by 5.5%, and saving 1 liter of fuel can reduce carbon dioxide emissions by 2.5 grams, which can effectively reduce vehicle carbon dioxide emission, reduce environmental pollution, the wheel hub of the present invention can reduce the vibration of the automobile engine, suspension bracket and gearbox, improve the service life of the vehicle, and also improve the stability, safety and comfort of the vehicle during driving.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a structural schematic diagram of the present invention.

detailed description

Referring to Fig. 1, a high-performance forged rare-earth magnesium alloy hub includes a hub body 1 integrally formed by forging and turning a rare-earth magnesium alloy rod. One side of the hub body 1 is open, and the other side is a connecting disc 2. The center of the connecting plate 2 is provided with a coupling hole 3, and the surrounding of the coupling hole 3 is provided with a number of uniformly arranged bolt holes 4, and the outer side of the described bolt hole 4 is provided with a number of uniformly arranged cooling holes 5. A valve hole 6 is provided at the connecting portion between the hub and the connection plate. The number of bolt holes 4 is five, and the number of cooling holes is six. The manufacture method of above-mentioned rare earth magnesium alloy wheel hub is as follows:

(1) The rare earth magnesium alloy is smelted and poured into a rare earth magnesium alloy rod with a compressive strength of 300-320 MPa.

(2) Process the rare earth magnesium alloy rod into a cylindrical rod. The diameter and length of the rod are as follows: 14 inches in diameter and 400 mm in length; 15 inches in diameter and 420 mm in length; 16 inches in diameter and 450 mm in length; 18 inches in diameter Length 480 mm; diameter 20 inches length 500 mm.

(3) The bar is heated to 380-420 degrees Celsius, and the bar is forged into a blank by a hydraulic press of more than 1,000 tons.

(4) Heat the blank to 380-420 degrees Celsius, and then put it into the spinning machine for spinning and forming.

(5) Put the spinning blank into a furnace at 200-220 degrees Celsius for 4 hours, then turn off the power and cool naturally.

(6). Machine tools are used to precisely process the inside and outside of the blank.

(7) Grinding the processed blank as a whole to improve the smoothness.

(8) Degreasing and cleaning the polished blank.

(9) Spray the cleaned blank to form a finished wheel hub.

(10) Check and pack the hub.

The weight of the wheel hub of the present invention is about 30% lighter than that of the aluminum alloy wheel hub, which can effectively reduce the weight of the vehicle. According to calculations, the fuel consumption per 100 kilometers can be reduced by 0.7 liters for every 100 kilograms in the weight of the vehicle; the weight of the vehicle is reduced by 10%, and its fuel efficiency can be reduced. Increased by 5.5%, saving 1 liter of fuel can reduce carbon dioxide emissions by 2.5 grams, which can effectively reduce vehicle carbon dioxide emissions and reduce environmental pollution. The wheel hub of the invention can reduce the vibration of automobile engines, suspension brackets and gearboxes, and improve the use of vehicles. It also improves the stability, safety and comfort of the vehicle during driving.

Claims (4)

1. magnesium-rare earth wheel hub is revolved in a High Performance forging, it is characterized in that comprising by the forging of magnesium-rare earth rod, the integrated hub body of turning, the side of described hub body is opened wide, opposite side is terminal pad, the center of described terminal pad is provided with connecting shaft hole, the surrounding in described connecting shaft hole is provided with some evenly distributed bolts hole, and the arranged outside of described bolt hole has some evenly distributed louvres.

2. magnesium-rare earth wheel hub is revolved in High Performance forging according to claim 1, it is characterized in that the connecting portion of described wheel hub and described terminal pad is provided with valve port.

3. a manufacture method for magnesium-rare earth wheel hub is revolved in High Performance forging as claimed in claim 1 or 2, it is characterized in that its step is as follows:

(1), magnesium-rare earth melting is watered clavate become compressive strength be 300-320 MPa magnesium-rare earth rod;

(2), magnesium-rare earth rod is processed into columniform bar;

(3), by bar be heated to 380-420 degree Celsius, adopt the oil press of more than kiloton that bar forging is become blank;

(4), by blank be heated to 380-420 degree Celsius, then put into spinning machine spin forming;

(5), by the blank after spinning put into 200-220 degree Celsius of stove heating 4 hours, then power-off cools naturally;

(6), adopt lathe detailed manufacture blank inside and outside;

(7), to the blank entirety polishing processing processed, degree of finish is improved;

(8), oil removing cleaning is carried out to the blank after polishing;

(9), to the blank after cleaning carry out spray treatment, form wheel hub finished product.

4. a manufacture method for magnesium-rare earth wheel hub is revolved in High Performance forging as claimed in claim 3, it is characterized in that, in step (2), diameter and the length relation of bar are as follows: the long degree of diameter 14 cun 400 millimeters; The long degree of diameter 15 cun 420 millimeters; The long degree of diameter 16 cun 450 millimeters; The long degree of diameter 18 cun 480 millimeters; The long degree of diameter 20 cun 500 millimeters.