Casting technique of automobile hub

A casting process and technology for automobile wheel hubs, applied in the field of wheel hub casting, can solve the problems of unstable size and uneven composition of aluminum alloy wheels, and achieve the effects of good high temperature resistance, no cracking, stable size and simple formula.

Active Publication Date: 2016-11-16
江苏康柏斯机械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a casting process for automobile wheels, which effectively covers the problems of uneven composition and unstable dimensions of aluminum alloy wheels

Method used

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  • Casting technique of automobile hub
  • Casting technique of automobile hub
  • Casting technique of automobile hub

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] a, cleaning the upper mold and the lower mold for casting, and air-drying the upper mold and the lower mold; b, coating the upper mold coating and curing respectively, and coating the lower mold coating on the inner surface of the lower mold and curing; c, weighing aluminum Alloy raw materials, melt and pour the aluminum alloy raw materials, heat the casting mold to 800°C, and pour the molten aluminum alloy raw materials into the casting mold at a pouring speed of 0.61m / s under a constant temperature state; e. Immediately after the pouring is completed Pressurize the casting mold at constant temperature from the sprue, the pressure is 0.01MPa, and the pressurization holding time is 1h; f, the casting mold is cooled in steps, the first stage is to cool the casting mold to 200 °C Finally, keep the temperature constant for 3 hours, and the second stage is to cool the pouring mold to room temperature naturally; g, demoulding treatment, and remove the burr from the workpiece ...

Embodiment 2

[0036] a, cleaning the upper mold and the lower mold for casting, and air-drying the upper mold and the lower mold; b, coating the upper mold coating and curing respectively, and coating the lower mold coating on the inner surface of the lower mold and curing; c, weighing aluminum Alloy raw materials, melt and pour the aluminum alloy raw materials, heat the casting mold to 900°C, and pour the molten aluminum alloy raw materials into the casting mold at a pouring speed of 0.68m / s under a constant temperature state; e. Immediately after the pouring is completed Pressurize the casting mold at constant temperature from the pouring port, the applied pressure is 0.015MPa, and the pressurized holding time is 1.5h; f, carry out step cooling to the casting mold, the first stage is to cool the casting mold to 300 After ℃, keep the temperature for 5 hours, the second stage is to cool the pouring mold to room temperature naturally; g, demoulding treatment, and deburring the workpiece to ob...

Embodiment 3

[0047] a, cleaning the upper mold and the lower mold for casting, and air-drying the upper mold and the lower mold; b, coating the upper mold coating and curing respectively, and coating the lower mold coating on the inner surface of the lower mold and curing; c, weighing aluminum Alloy raw materials, melt and pour the aluminum alloy raw materials, heat the casting mold to 860°C, and pour the molten aluminum alloy raw materials into the casting mold at a pouring speed of 0.65m / s under a constant temperature state; e. Immediately after the pouring is completed Pressurize the casting mold at constant temperature from the pouring port, the applied pressure is 0.012MPa, and the pressurized holding time is 1.2h; f, carry out step cooling to the casting mold, the first stage is to cool the casting mold to 270 After ℃, the temperature is kept constant for 3.5 hours. The second stage is to cool the casting mold to room temperature naturally; g, demoulding treatment, and deburring the w...

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Abstract

The invention belongs to the field of hub casting and particularly relates to a casing technique of an automobile hub. The casting technique comprises the following steps that a, an upper die and a lower die for casting are cleaned and air-dried; b, the upper die is coated with upper die paint, then the upper die paint is cured, the inner surface of the lower die is coated with lower die paint, and then the lower die paint is cured; c, an aluminum alloy raw material is weighed, melted and cast; d, after casting is completed, the cast dies at the constant temperature is pressurized for 1-1.5 h from a sprue gate immediately; e, stepped cooling is conducted on the cast dies; and f, demolding is conducted, deburring is conducted on a workpiece, and then a hub product is obtained. By the adoption of the casting technique of the automobile hub, the problem that the aluminum alloy hub is uneven in component and unstable in dimension is effectively solved.

Description

technical field [0001] The invention belongs to the field of wheel hub casting, in particular to a casting process for an automobile wheel hub. Background technique [0002] Aluminum alloy wheels have the advantages of light weight, energy saving, low price, high surface quality, good heat dissipation, easy molding, good vibration damping performance, etc., and are widely used in the automotive field. However, with the rapid development of the automobile industry, the performance requirements for aluminum alloy wheels are also continuously increasing. There are still some problems in the existing aluminum alloy wheels, such as insufficient strength, heavy weight, poor processing performance, poor heat dissipation, and deterioration treatment. The effect is limited, the quality of castings is unstable, etc. Therefore, it is necessary to further improve the comprehensive performance of aluminum alloys for wheel hubs. [0003] In order to solve the above technical problems, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/28B22C3/00B22D27/04B22D27/09C22C49/00
CPCB22C3/00B22C9/28B22D27/04B22D27/09C22C49/00
Inventor 陈凌王琰任琪程晓
Owner 江苏康柏斯机械科技有限公司
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